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HOW TO CHECK Rotor Winding & Brushes - Wacker Beuson GP 2600 - GP 4000 - GP 5600A / GPS 5600A - GP 6600A / GPS 6600A Generators

August 4, 2014, 1:03 am
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HOW TO CHECK Rotor Winding & Brushes _ Wacker Beuson GP 2600 - GP 4000 - GP 5600A / GPS 5600A - GP 6600A / GPS 6600A Generators
Checking Main and Rotor Windings
* Stop the engine.
* Remove the two screws which secure the end cover to the generator and remove the end cover.
* Disconnect the Automatic Voltage Regulator (AVR) (a).
* Remove the screw (b) that secures the brushes and remove the brushes.
* Disconnect the yellow-, red-, black-, and green-marked wires (f) from the terminal strip. On GP 2500A/GP 2600 models, disconnect the voltage plug (g).
Using the Ohms setting on the multimeter, measure the resistance of main winding 2 by measuring across the upper two terminals (c) (yellow and red). On GP 2500A/GP 2600 models, measure across the red and white wires. Also check the resistance of main winding 1 by measuring across the two lower terminals (d) (black and green). On GP 2500A/GP 2600 models, measure across the brown and blue wires. Each generator size will have a different value. Check the chart in the graphic for the correct values; use a tolerance of +0.5/-0.0 Ohm.
* If the correct resistance is not measured, the main windings are bad; replace the stator.
* If the correct resistance is measured, continue.
Check each winding to ground. (Measure resistance between the winding and the ground stud (x) of the stator. Measure both sides of the winding.)
* If either winding has resistance to ground, it has failed.
* If both windings show no resistance to ground, they are OK
Using the Ohms setting on the multimeter, measure the resistance of the rotor winding by measuring across the slip rings (e).  Each generator size will have a different value. Check the chart in the graphic for the correct values; use a tolerance of +1.0/-0.0 Ohm.
* If the correct resistance is not measured, the rotor winding is bad; replace the rotor.
* If the correct resistance is measured, the rotor winding is OK.
Check for shorts to the rotor shaft by measuring resistance between each slip ring and the end of the rotor shaft.
* If there is any resistance, the rotor winding has failed.
* If there is no resistance, the rotor winding is OK.
* If possible, the resistance of the insulation should also be checked using a 500V megger or similar instrument. When using a megger, a resistance value of at least 1 megohm should be obtained. Measure between each winding group and the generator frame. If 1 megohm is not measured, dry out the windings in a warm atmosphere and recheck every 30 minutes until 1 megohm is obtained.
Checking Brushes
As long as the brushes have continuity and are long enough to touch the slip rings, they should be functioning. To check the brushes, carry out the following procedures:
Stop the engine.
* Remove the two screws that secure the end cover to the generator and remove the end cover.
* Remove the screw (a) that secures the brush holder and remove the brush holder/brushes.
Visually inspect the brushes (b) for cracks and for the buildup of dirt.  Clean the end of the brushes if necessary.
* Check each brush for continuity.
* Replace the brush holder/brushes as needed.

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EXCITATION WINDING AND AVR SENSING WIRE CHECKING - Wacker Beuson GP 2600 - GP 4000 - Generator

August 4, 2014, 3:36 am
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How to check Excitation Winding _ AVR’s Sensing Wires _ Wacker Beuson GP 2600 - GP 4000 - GP 5600A / GPS 5600A - GP 6600A / GPS 6600A Generators
Checking Excitation Winding
The excitation winding provides AC voltage to the Automatic Voltage Regulator (AVR). The AVR then sends a DC voltage through the rotor winding “exciting” the rotor into becoming an electromagnet. To check the excitation winding, carry out the following procedures:
* Stop the engine.
* Remove the two screws which secure the end cover to the generator and remove the end cover.
* Remove the plug (a) which connects the excitation winding to with the AVR. On GP 2500A/GP 2600 models, remove plug (b).
* Using the Ohms scale on your multimeter, check the resistance of the excitation winding. Access the excitation winding via the connector where the two yellow wires of the plug connect to it. Each generator size will have a different value for the winding resistance. Check the chart in the graphic for the correct values—use a tolerance of +0.5/-0.0 Ohm.
* If the correct amount of resistance was not measured, replace the stator.
* If the correct amount of resistance was measured, continue.
* Check  the  excitation  winding  for  resistance  to  ground.  (Measure resistance between the winding and the ground stud of the stator.  Measure both sides of the winding.)
> If there is resistance to ground, the excitation winding has failed, replace the stator.
> If there is no resistance to ground, the excitation winding is OK.
Checking AVR’s Sensing Wires—GP 2500A, GP 2600
There are two sensing wires feeding the Automatic Voltage Regulator (AVR) both attached to main winding 2. If the sensing wires are shorted or broken, the AVR will not perform correctly. To check the continuity of the sensing wires, carry out the following procedures:
Stop the engine.
* Remove the two screws which secure the end cover to the generator and remove the end cover.
* Disconnect the generator plug (a).
The two sensing wires are the brown and blue wires that share the same connector (b) as the wires for the DC winding; disconnect this connector.
* Check each wire from the DC winding plug (c) with its counterpart in the generator plug (d): blue to blue; brown to brown. In each case there should be continuity. Also check the wires from the DC winding plug to the generator plug, blue to brown; and brown to blue. In each case there should be continuity.
* If the wires lack continuity in any of the tests, the sensing wires have failed; replace the stator.
* If the wires have continuity in all cases, continue.
Check each wire from the DC winding plug to ground. (Measure between the winding and either the outer metal case of the generator or the ground stud on the frame.)
> If either wire has resistance to ground, it has failed.
> If both wires show no resistance to ground, they are OK.
There are two sensing wires feeding the Automatic Voltage Regulator (AVR), one attached to each of the main windings. If the sensing wires are shorted or broken, the AVR will not perform correctly. To check the continuity of the sensing wires, carry out the following procedures:
Stop the engine.
* Remove the two screws which secure the end cover to the generator and remove the end cover.
* Disconnect the yellow-, red-, black-, and green-marked wires from the generator terminal strip (h).
The first sensing wire, represented by the brown wire on the electrical schematic, is internal to the stator. The AVR connects to this wire at the connection point at the upper portion of the stator. Access the wire by disconnecting the plug (a).
To check the first sensing wire, check for continuity between the connection point (b) where the brown wire from the AVR plug connects and main winding 2 at the terminal strip (c) where the red-marked wire usually connects. There should be continuity.
* If the first sensing wire does not have continuity, replace the stator.
* If the first sensing wire has continuity, continue.
Check the first sensing wire for a short to ground. (Measure resistance between the wire and the ground stud of the stator.)
* If the first sensing wire has resistance to ground, replace the stator.
* If the first sensing wire has no resistance to ground, continue.
The second sensing wire is really a circuit. It is represented by the blue wire and then the brown wire on the electrical schematic. This sensing circuit runs back through the Voltage Selector Switch (VSS) where the wiring splits, with one wire running to main winding 1, another to main winding 2. The circuit is accessed by disconnecting the plug (d) from the connection point at the lower end of the stator. To check the circuit, first check the main-winding-2 side. To do so, place the VSS in the 120V position. With one lead of your multimeter, probe the blue wire (e) of the plug. With the other lead, probe the generator terminal strip (f) where the red-marked wire is usually connected. There should be continuity.
* Next, check the main-winding-1 side. To do so, place the VSS in the 120V/240V position. With one lead of your multimeter, probe the blue wire (e) of the plug. With the other lead, probe the generator terminal strip (g) where the black-marked wire is usually connected. There should be continuity.
* If the second sensing wire (circuit) does not have continuity, check the wiring through the various connectors and the VSS.
* Repair or replace components as needed.
If the second sensing wire (circuit) has continuity, continue.
* Check the blue wire for shorts to ground. (Measure resistance between the wire and the ground stud of the stator.)
If the second sensing wire (circuit) has resistance to ground, check the wiring through the various connectors and the VSS.
* Repair or replace components as needed.
*If the second sensing wire (circuit) has no resistance to ground, the second sensing wire (circuit) is OK.
Confirming a Malfunctioning AVR
  By removing the two sensing wires of the regulator and measuring the output voltage of the generator, you can determine if the generator windings and the AVR are functioning correctly. When the sensing wires are removed from the circuit, the generator should produce high voltage (greater than 150V, usually around 180V). If this high voltage is still produced with the AVR’s sensing wires connected, the AVR is malfunctioning. To check the AVR, carry out the following procedures:
* Stop the engine.
* Place the auto idle switch in the OFF position.
* Remove the two screws which secure the end cover to the generator and * remove the end cover.
* Disconnect plugs (a and e).
* Create two short jumper wires (b and c) each with one male spade and one female spade. Connect the jumpers between the yellow wires of the plug (e) and where the yellow wires connect to the stator.
NOTE: Be sure to connect the jumper wires correctly. Damage to the generator may occur if the wires are incorrectly connected.
* Start the engine and check the voltage at the terminal strip between the wire with the yellow marking and the wire with the red marking.  
  There should be approximately 180V. Also check between the wire with the green marking and the wire with the black marking. There should be approximately 180V.
  If approximately 180V is not measured, the generator winding may be bad. See section Checking Main and Rotor Winding.  If approximately 180V is measured, the generator winding are functioning properly, but the AVR is not. Replace the AVR.

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Wacker Beuson GP 2600_GP 3800A_GP 4000 _GP 5600A / GPS 5600A _GP 6600A / GPS 6600A Generator Troubleshoot

August 5, 2014, 12:28 am
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Voltage Selector Switch_Idle Solenoid_After-fire.
For more go to previous posts here.
Checking and Installing the Voltage Selector Switch (VSS)
The  VSS  (a)  selects  the  voltage  mode  setting  of  the  generator.  Changing  the  voltage  mode  also  changes  the  orientation  of  the Automatic Voltage Regulator (AVR) sensing wires. Use the following information when testing and installing the VSS.
Checking Voltage to Auto Idle Solenoid
Problems with the auto idle system can be classified into one of two categories: electrical problems with power to the idle solenoid or problems with the mechanical linkage. Before checking the electrical system, check the governor mechanical linkage (a) to make sure it’s functioning properly.
Electrical problems can be further broken down in to two categories: 1) power generation by the generator, 2) problems with the electrical circuit feeding power to the solenoid.
* Start the generator.
* Unplug the two white/red wires (b) from the idle solenoid. Measure the voltage between the two wires. There should be 28±2VDC.
If 28±2VDC is measured, the idle solenoid is receiving the correct voltage. If the idle solenoid is receiving the correct voltage but is still not functioning, confirm that it is bad by measuring the resistance of the solenoid’s coil. The coil should measure 26–33 Ohms (16–19 Ohms Wacker Engine). Replace the solenoid if the correct resistance is not measured.
* If 28±2VDC is not measured, continue.
* Stop the generator.
* Remove the screws which secure the control panel to the enclosure.
* Remove the 5A fuse (c). Start the generator and check the voltage across the fuse holder. There should be 20–29 Volts.
> If 20–29 Volts is measured, the source of the problem is in the circuit from the fuse to the idle solenoid.
> If 20–29 Volts is not measured, the source of the problem is in the circuitry between the fuse and the DC winding.
* Reinstall the 5A fuse (replace the fuse if it is blown).
Checking Auto Idle Circuitry between Generator and Fuse
Voltage may be prevented from reaching the 5A fuse by a faulty rectifier or by a faulty DC winding. The auto idle circuit may also be malfunctioning due to faulty sensing wires. To check the circuit, carry out the following procedures:
* Stop the generator.
* Remove the two screws which secure the end cover to the generator and remove the end cover.
To check the rectifier (a), remove the connector plug from the rectifier.  Use the diode scale on your multimeter. Probe the top terminal with one lead and the bottom terminal with the other. Then, reverse the leads and conduct the test again. The rectifier should conduct in one direction and not the other. Check both upper terminals of the rectifier to the lower terminal of the rectifier in the same manner.
> If the rectifier is malfunctioning, replace it.
> If the rectifier is functioning, continue.
* Remove the plug (b) from the stator.
* Using the Ohms scale on your multimeter, check the resistance of the DC winding. Each generator size will have a different value for the winding resistance. Check the chart in the graphic for the correct values—use a tolerance of +0.5/-0.0 Ohms.  If the correct amount of resistance was not measured, replace the stator.
> If the correct amount of resistance was measured, the DC winding is OK; continue.
> Remove the screws which secure the control panel to the generator.
Check that the sensing wires are running through the ammeter (c) of the auto idle unit.
Check the continuity of the sensing wires (d) from the auto idle unit through to the generator terminal strip (e).
Checking Auto Idle Circuitry Between Fuse and Auto Idle Unit
Voltage may be prevented from reaching the idle solenoid by a faulty auto idle switch or by a faulty auto idle unit. To check the circuit, carry out the following procedure:
Stop the generator.
* Remove the screws which secure the control panel to the generator.  Locate the auto idle switch (a).
* Check the continuity of the auto idle switch.  If the switch lacks continuity, replace it.  If the switch has continuity, it should be functioning.
* Remove the plug from the back of the auto idle unit (b).
* Start the generator.
* Check the voltage between the red and black wires of the plug. There should be 20–29V. At this point in the troubleshooting, you should have measured voltage at the fuse but not at the idle solenoid, and the auto idle switch should have checked OK. Therefore:
> If voltage is measured to the auto idle unit but not at the idle solenoid, the auto idle unit is malfunctioning, replace it.
> If no voltage is measured at the auto idle unit, check the wiring between the fuse and the auto idle unit. Repair or replace the wiring as needed.
Checking Anti-Afterfire Solenoid (AAS) Circuit _ Honda Engine.
* Check  the  5A  fuse.  See  section  Checking  Voltage  to  Auto  Idle Solenoid.
* Check the resistance of the DC winding. See section Checking Auto Idle Circuitry Between Generator and Fuse.
* Check for voltage at the AAS by starting the generator, probing the green and white wires (a) with your multimeter leads, then shutting the engine off and measuring the voltage on the multimeter at shutdown.
There should be 18±2V.
> If the correct voltage was measured, the AAS is malfunctioning; replace it.
> If the correct voltage was not measured, continue.
* Remove the screws that secure the control panel to the generator.
* Check the continuity of the main ON/OFF switch. In the OFF position it should have continuity across contacts 5 and 6—that is, between wires W/R (b) and W (c). 
> If the main ON/OFF switch has no continuity, replace it.
> If the main ON/OFF switch has continuity, continue.
* Disconnect the capacitor (d).
A  functioning  capacitor  can  hold  up  to  30VDC;  use  care  when discharging it.  Discharge the capacitor by placing an insulated screw driver or like tool across both of its leads. Then, check the capacitor’s capacitance. It is rated at 1000 µF (microfarads) and should measure within 10% of that
rating.
> If the correct capacitance is not measured, replace the capacitor.
> If the correct capacitance is measured, the capacitor is OK.
All major components of the circuit have now been checked. If the AAS is still not working, check the continuity of all the wires in the circuit.
Repair or replace the wires as needed.
Diagnosing GFI Tripping
A common cause for nuisance tripping of the GFI is incorrect wiring. If you experience tripping of the GFI when changing from the 120V mode to the 240V mode, check the wiring running through the GFI. There should be four brown wires and two blue wires running through the ammeter portion (a) of the GFI. If you have any other combination, refer to the wiring schematic and correct the situation.
If you’re not sure whether tripping of the main circuit breaker is due to the GFI or due to the main circuit breaker, carry out the following test:
* Turn off the generator.
* Disconnect yellow wire (b) from the shunt of the main circuit breaker.
* Place the main circuit breaker in the 120V mode position.
* Start the generator and switch the main circuit breaker from the 120V position to the 240V position.  If the GFI trips and its red light is on, the problem lies within the GFI. Check the wiring through the ammeter portion of the GFI. If the wiring is correct, replace the GFI.
>> If the GFI does not trip, the problem lies in the main circuit breaker. Replace the main circuit breaker.

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LG FLATRON - L1810B Monitor - SMPS SCHEMATIC (Power Supply Circuit Diagram)

August 5, 2014, 10:55 am
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SMPS SCHEMATIC
PWB _ Component side & Foil side

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AIWA XH-A1060 COMPACT DISC STEREO SYSTEM - SCHEMATICS

August 5, 2014, 11:53 pm
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AIWA XH-A1060 COMPACT DISC STEREO SYSTEM - Circuit Diagram
BASIC TAPE MECHANISM: 6ZM-1 AR3N1M
BASIC CD MECHANISM: AZG-1 YZD3RDM
POWER
TUNER
AMP
SUB-WOOFER
CLICK ON THE PICTURES TO ZOOM IN

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HOW TO OPEN SPEAKER BOX - AIWA XH A1060

August 6, 2014, 12:20 am
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AIWA XH-A1060_SPEAKER DISASSEMBLE INSTRUCTIONS.
TOOLS REQUIRED
DISASSEMBLE PROCEDURE
* Insert a flat-bladed screwdriver into the position indicated by the arrows and remove the panel. Remove the screws of each speaker unit and then remove the speaker units.
* Remove the grill frame and four pieces of rubber caps by pulling out with a flat-bladed screwdriver. Remove the screws from hole where installed rubber caps. Insert a flat-bladed screwdriver into the position indicated by the arrows and remove the panel. Remove the screws of each speaker unit and then remove the speaker units.
* Insert a flat-bladed screwdriver into the position indicated by the arrows and remove the panel. Turn the speaker unit to counterclockwise direction while inserting a flat-bladed screwdriver into one of the hollows around speaker unit, and then remove the speaker unit. After replacing the speaker unit, install it turning to clockwise direction until "click" sound comes out.
How to Remove the PANEL, FR
* Insert the (--) flat head screwdriver tip into the gap between the PANEL, FR and the PANEL, SPKR. Tap the head of the (--) flat head screwdriver with the plastic hammer head, and create the clearance as shown.
Insert the cut chisel in the clearance, and tap the head of the cut chisel with plastic hammer as shown, to remove the PANEL, FR.
* Place the speaker horizontally. Tap head of the cut chisel with plastic hammer as shown, and remove the PANEL, FR completely.

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TOSHIBA MS 7845MU / 60MUS - SCHEMATIC (Circuit Diagram_Power_Amp)

August 6, 2014, 1:00 am
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TOSHIBA TOSHIBA MS 7845MU / 60MUS_Mini  System AM / FM Stereo C/CD_MP3_USB Rip_Sub-Woofer.
POWER
AMP
CD MECHANISM_EXPLODED
SPEAKER BOXES_EXPLODED
CLICK ON THE PICTURES TO ZOOM IN

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PANASONIC TC-L42S20B - LCD TV - SMPS (Power Supply) - SCHEMATIC (Circuit diagram}

August 7, 2014, 12:51 am
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SMPS SCHEMATIC [View on large screen monitor](Click on the pictures to Magnify)

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HITACHI - CML176SXW - CML178SXWB - TFT LCD MONITOR - SCHEMATIC

August 8, 2014, 9:07 am
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Power Supply and Back light inverter Circuit Diagram_Hitachi CML176SXW - CML178SXWB TFT LCD monitor
JP 877_SMPS & BACK LIGHT INVERTER
CLICK ON THE SCHEMATICS TO MAGNIFY
JP878_SMPS & BACK LIGHT INVERTER

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TOSHIBA TR8152MU - RADIO C/ CD - MP3 - SCHEMATIC (Circuit Diagram)

August 8, 2014, 9:23 pm
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ICs used: BA4558_CD3314_TDA7266_TB2132_RT9702_M5673_W9816G6CH-6_HT1621_EA34300KA69U_AM5766 / AM5888S

CIRCUIT DIAGRAMS [Click on the pictures to Zoom In]

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SAMSUNG DS17BS - TFT-LCD MONITOR - SERVICE MODE AND ADJUSTMENTS

August 9, 2014, 9:45 am
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How to enter service mode and adjust data values to Samsung DS17BS - TFT-LCD MONITOR
SERVICE MODE
* Display Service Function OSD
* The value for brightness and contrast should be changed to zero.
* Within 5 seconds, press the exit key.
Service function OSD will be displayed.
If you want to disable the service function OSD, you will have to power off.
> The service function OSD is based on a grid of 29 columns x 12 rows.
> The service function OSD consists of panel information, software version and MICOM check sum.
With the panel selected on OSD, whenever you press the right key, the base color will change to blue from “Panel” to “Country”, “Pixel Shift”, “Lower Lamp”, “Upper Lamp”.
How to Control Service Function OSD
After change the panel or lamp, you must reset service function OSD.
The case of panel change
* After changing the panel, press the menu key within 5 seconds,.
* Then, panel Ch. No increases one step and the panel time information is reset to zero.
Simultaneously, other information is reset to zero (Upper/Lower lamp, Panel cycle).
In the case of Upper Lamp or Lower Lamp change
After changing the Upper Lamp or Lower Lamp,
* Select the Upper Lamp or Lower Lamp
* Press the Menu key within an 5 seconds.
Then, Ch. No and time will be reset to zero (selected item only)
Pixel shift and language selection change
Note: Use the '-' key to vary values for new pixel shift and country menu.
1. Pixel shift: on  off.
> When a same picture is displayed with no change for an extended period of time, this function prevents the display panel from image sticking.
# On for '0 x 01' with EEPROM 0x2E, Off for others; Always restart the monitor after EEPROM adjustment.
> Motion path: see Figure. One-step movement requires 4 minutes (total of 32 steps: 128 minutes)
> Location is reset.
a) the monitor is restarted
b) image mode is adjusted
c) user adjusts a key
Note : Pixel shift is not a available in service menu.
2. Country : Worldwide    Korean    Chinese    Japanese
> This function enables to select relevant OSD language for each region / country.
> Worldwide : 7 languages (English, German, Spanish, French, Italian, Swedish, Russian)
> Korean : 2 languages (Korean, English)
> Chinese : 2 languages (Simplified Chinese, English)
> Japanese : 2 languages (Japanese, English)

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SANGEAN ATS-909X - SCHEMATIC _ TROUBLEHOOTING - PLL SYNTHESIZED RECEIVER

August 11, 2014, 7:00 am
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ATS-909X FM / MW / LW / SW  PLL SYNTHESIZED RECEIVER_Circuit Diagram & Troubleshooting
SCHEMATICS [CLICK ON THE PICTURES TO MAGNIFY]
TROUBLESHOOTING

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ERISSON 2515[25A9ABN87(B)] - 21F1[21A8BN87(A)] - CIRCUIT DIAGRAM [FULL]

August 12, 2014, 10:34 am
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APPLICABLE TO ERISSON 2515[25A9ABN87(B)] - 2915[29A9ABN87(B)] - 21F1[21A8BN87(A)] - 2102[21A9BN37(B)]
SCHEMATIC DIAGRAM [ICs USED _ AN5539 – TA1216AN – MC4052 – MN5099K – KS88C8424 – 24C08 – LA7952]
CLICK ON THE SCHEMATIC TO ZOOM IN
+B Voltage adjustment
1) Receive standard colour bar signal.
2) Press key "I.P.C." to select “Natural” mode.
3) Connect digital voltmeter between [+] of C403 (For 21A8/25A9/29A9) or C416 (For 21A9) and GND.
4) +B voltage.
Adjust VR901 to make the read-out on the Voltmeter to be +B±0.3V.

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HOW TO UNLOCK AIWA DVDs TO REGION-FREE

August 13, 2014, 1:23 am
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SET YOUR AIWA DVDs TO REGION-FREE
[Aiwa AVJ-X33, AVJ-X55, HT-DV50, XD-AX1, XD-DK601, XD-DV10, XD-DV170, XD-DV290, XD-DV380, XD-DV485, XD-DV487, XD-DV500, XD-DV530, XD-DV600, XD-PK701, XP-K7, XP-KR9, XR-DV120, XR-DV526, XR-DV700, XR-DV701, XSDV335RW] _ No known unlock codes.

Aiwa XR-DV525
  • Unplug hte player
  • Press and hold DVD/CD
  • Plug the player in
  • Press FFW
  • "Factory" is displayed
  • Release the keys.
Aiwa XD-DV480
  • Plug the player in and turn it on with the remote "No Disc" is displayed
  • Press PAUSE, 8, 9, 2 and 6 "CODE__" is displayed
  • Press 0 2x within 5 secs
  • Press PAUSE and POWER.
Aiwa XD-DV170
Possibly only works with RC 4.
  • Plug the player in, but don't turn it on ("Off" is displayed)
  • Press and hold MENU
  • Press and hold TOP MENU
  • Press and hold POWER
  • Press all 3 buttons for 3 secs and then release them "Factory" is displayed.
  • Turn on the player
Aiwa XD-AX10
You need an One For All remote(URC 7030)
  • Press "DVD" on the player
  • Press and hold MAGIC
  • Enter 0, 5, 3, 3
  • Press and hold MAGIC again
  • Enter 9, 9, 4
  • Press MAGIC
  • Press "1-5" and enter the following code
  • Repeat from step 4 until all 5 keys are programmed: Key 1: 189 // Key 2: 255 // Key 3: 095 // Key 4: 221 // Key 5: 079
  • Turn on the player (standby /without a disc inserted)
  • Press "1-5"
  • Player turns on
  • Press "1-5" again
  • Player turns off.
Aiwa XD-520KS / XD-DV520 / XD-DV520 KS
  • Turn on the player (without a disc inserted)
  • Open the disc tray
  • Press MENU
  • Press 1, 6, 7
  • Current region is displayed
  • Press MUTE
  • "All" is displayed
  • Turn the player off
Aiwa HT-DV90
  1. Press DVD/CD
  2. Press OPEN
  3. Press C, 2, 5, 8, 0, C ("Testmode" is displayed) Onscreen display shows current RC
  4. Press Up ("14 02" is displayed (02 is RC))
  5. Press 1, 4, 0 and X (X = region; 0 = codefree)
  6. Press ENTER
  7. Press RETURN ("Testmode" is displayed)
  8. Press C ("EEP CLR and EEP ERR" is displayed)
  9. Insert a DVD
  10. Press RETURN.
Aiwa HT-DM150
  • Turn on the player (without a disc inserted)
  • Press ENTER
  • Press 8, 4, 2, 6, 9
  • Press ENTER again.
Aiwa HT-DV50 / XD-DV50
  • Press ON/OFF on the player
  • Press and hold MENU, TOP MENU, OSD
  • After approx. 3 secs "Factory" is displayed
  • Release the keys
  • Turn on the player.
Aiwa XD-DV520
  • Using the open button on the machine, open the disc tray. Make sure it's empty.  Make sure you can see the DVD on your TV screen 2.  Press MENU on remote (not top menu), you should see the on screen pectoral graphics on your TV screen
  • Using the remote, press 1, 6, 7
  • On the screen you should see over the top of the graphics "region 1-6".
  • Press MUTE button and next to "region 1-6" you should see "all"
  • Then use the remotes POWER OFF button and the DVD should close the (empty) tray.
  • Restart the unit, put in a region disc and it should play it.
Aiwa XD-DW1 / XD-DW5 / XD-DW7
  1. Turn on the player
  2. Insert a disc
  3. Open the disc tray, take the disc out, close the disc tray, press STOP instantly
  4. Press 8, 7, 2, 0 and >> For selection of a specific RC replace >> with Code (1-6).  If this doesn't work, press 1 instead of 2 in step 4.
Aiwa XD-DV290 / XD-DV370 / XR-DV370 KN
  • Press PAUSE
  • Press 3, 1, 4, 1, 5, 9
  • Press the button for the desired RC (0=code free)
  • Press PAUSE
  • Turn the player off.

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AKAI DVD PLAYERS - HOW TO SET REGION FREE

August 13, 2014, 2:10 am
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How to make Akai DVD players_Region Free
Akai ADV-1000, ADV-1150, ADV-2750, ADV-8175, APV-4300MB, CFTP2085V, DV-P3580SK, DV-P4500, DV-4530S, DV-P4580SL, DV-PX6500, PX7000E, DVPX7000E, DV-R4200SS, DV-4410SS, DV-V605N, DVD-P5851, DVD-S3500P, DVPS-7000, VRD-975 {No known unlock codes} 
Akai DVPS-760
  • Turn on the player
  • Open the disc tray
  • Press SETUP
  • Press 9, 1, 0, 1, 0 (first digit (9) is for multi-region)
  • Press STEP, SHUFFLE, NEXT
  • Close disc tray
Akai DVD-200BL
Akai DVD-200BL
No disc should be inserted
  • Press OPEN/CLOSE on the remote
  • Press SETUP
  • Press 1, 3, 6, 9
  • Press LEFT, LEFT, LEFT, RIGHT
  • Select region (0 = multi-region)
Akai DV-R4000SS / DV-R4150SS
Turn on the player (without a disc inserted)
  • Press SETUP
  • Press STOP
  • Press 5, 7, 0, 0
  • Press STOP
  • Enter region (0 = multi-region)
  • Press SETUP
Akai DV-PX7000
  • Open the disc tray
  • Press 1, 0, 3, 0, 0
  • 0 is displayed
  • Turn the player off
Akai DVR-3100SS / DVR-3300SS / DV-R3400SS
  • Open the disc tray
  • Press 8, 1, 3, 2, 8
  • Select region using ENTER (9 = multi-region)
  • Press STOP
Akai DVD-3850S
  • Open the disc tray
  • Press 8, 5, 6, 1
  • A menu should appear
To control the settings:
  1. Open the disc tray
  2. Press SETUP
  3. Press SHUFFLE, STEP, NEXT
  4. Go to the Debug settings. The current RC is shown there.
  5. Close disc tray.
Akai HV-DH10 / HV-DH10N
  • Insert foreign DVD
  • Wait for "Check Region Code"
  • Press DISPLAY, TOP MENU, PLAY quickly.
Akai DVD-2100 / DVD-2100SS
  • Open the disc tray
  • Press 3, 8, 3, 8
  • Select region (9 = multi-region)
Akai PDVD150
  • Turn on the player
  • Open the disc tray
  • Enter 2120090
Akai DV-P4000 / DV-P4500
  1. Turn the player off (OFF-Mode)
  2. Press DIMMER and SKIP BACK simultaneously
  3. Hold them and press POWER ON
  4. Four lines are displayed
  5. Enter '1999'
  6. 'A-0000 D-04' is displayed
  7. Enter: '00' for RC 0 (Display: A-0000 D-00) (region free), '01' for RC 1 (Display: A-0000 D-01), '02' for RC 2 (Display: A-0000 D-02)
  8. Press ENTER
  9. Turn the player of ('Power ON/OFF')
Akai ADV-1120 / ADV-1250 / DV-P2340 / DV-P2440 / DV-P2540 / DVD-2100SS /
DVR-2100SS
  1. Turn on the player
  2. Open the disc tray
  3. Press 3, 3, 0, 8, 0
  4. "XXXX" is displayed.
  5. Enter the region (0 = multi-region)
  6. Close the disc tray
  7. Turn it off.
Akai ADR-5800Di
  • Insert any disc
  • Press CLEAR, 2, 5, 8, CLEAR
  • The service menu will then come up.
  • Enter the region you want (0 = multi-region)
Akai DHT-300
  1. Turn on the player (without a disc inserted)
  2. Press STOP
  3. Press 1, 9, 9, 9
  4. Current region is displayed
  5. Select "Region Code"
  6. Press ENTER
  7. Select region using UP/DOWN ("Free" = multi-region)
  8. Press ENTER
  9. Press SETUP
Akai ADV-8000 / ADV-8175 / DV-P2500 / DVP-8000
  • Turn on the player (without disc inserted)
  • Press 8, 9, 2, 6, X (X = region; 0 = multi-region)
Akai DV-P1000
  1. Press and hold EJECT and A-B while the player is off
  2. Turn it on, display says "A:00 D:12"
  3. Change digit after "A" to 05 with PLAY and STOP
  4. Change digit after "D" with SKIP keys to "00" (this is the region)
  5. Save with PAUSE
  6. Turn the player off and on.
Akai DV-P2000
  1. Turn the player off
  2. Press and hold FAST FORWARD and STOP and the black button
  3. Turn on the player (with POWER)
  4. When the AKAI logo is shown, release FAST FORWARD and STOP but keep holding the black button.  A list, separateed into columns, appears.
  5. Press ENTER
  6. Press CURSOR RIGHT
  7. Change it to '00' for region free
  8. Press ENTER
  9. Press POWER to turn the player off
  10. Release the black button
  11. Turn on the player.
Akai DV-P3550
  • Press ON/OFF
  • Press OPEN/CLOSE
  • Press SETUP
  • Go into "PERFERENCE" at Setup Menu
  • Scroll down to the "Country/Region Code" and choose the country.
Akai ADV-9000 / DV-P3410 / DVD-3140
  • Open the disc tray
  • Press 8, 4, 2, 1
  • A menu should appear. (9 = multi-region)
Akai DV-P3470 / DV-P3570 / DV-P3570S
  • Turn on the player
  • Press SETUP on the remote
  • Press 4, 9, 5, 4, 0
  • Go to "Version"
  • Select region using LEFT/RIGHT (0 = code free)
Akai DV-P4330S / DV-P5380S / DV-P5570SL / DV-P5580SK
  • Open tray
  • Press 9, 7, 3, 5
  • Select region 0
  • Press ENTER
  • Leave the menu.
Akai DV-P4410 / DV-P4420S
  • Open the disc tray
  • Press 7, 7, 3, 9
  • Press 0
  • Close the disc tray.

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Search

RENAULT Rear Seat Entertainment System Control Module fault diagnosis and Repair

August 13, 2014, 8:41 pm
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WORKING PRINCIPLE
  A micro-controller in the Control Module supplies and controls the power to the system via an I2C bus. On receipt of a power-on command from the Infrared Controller it performs a simple system check and then sends commands to other parts of the system to bring them on line.  When a screen has been selected using the infrared remote control the Control Module identifies the selected screen and displays on it a menu providing the user with access to the functions detailed below:
  • Independent switching of three Audio-Visual inputs (DVD, TV and AUX)
  • Video manipulation (Colour, brightness, contrast and aspect ratio of the display.)
  • Audio processor (Bass, Treble and Volume)
  • On-Screen instructions language selection
  • Switch on/off individual screen displays
  The Control Module also determines which media source has been routed to the selected screen and relays commands in the appropriate protocol. For example if, while Screen A is displaying the DVD transmission, an infrared play command is detected at screen A, it would be captured, stored and relayed to the DVD in the DVD's Infrared protocol. If screen B is displaying a TV transmission the play command would be transmitted in the vehicle's TV tuner infrared protocol. A non-volatile memory stores the display instruction language in use and the current Audio and Video settings for each output channel. These settings are reloaded on power-up with the exception of the audio volume level, which defaults to a low state. Support equipment that has been powered off is detected by the lack of video sync pulse. This can be caused by auto shutdown after extended pause mode. When this happens the module responds by transmitting a power-on command to the support equipment until it is ready to accept it and power up. The supply of the video sync pulse then resumes and the module stops transmitting the power-on command.
DISASSEMBLY
  • Loosen screws 1 to 4 and remove the control box lid.
  • Remove screws 5 to 8. and separate the PCB from the control box base.
  • Visually inspect the components for obvious signs of mechanical or electrical damage.

Diagnosis and Repair
* Connect the open control module to the test kit.
* Connect the 12.5 V power supplies to the test kit.
* Compare the symptoms observed. 
Initial Inspection and Test with the symptoms listed below to locate the components likely to be faulty and effect the necessary repairs.
CONNECTION DIAGRAM
CLICK ON THE PICTURES TO MAGNIFY

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CONNECTOR - PIN DETAILS - RENAULT Rear Seat Entertainment System

August 13, 2014, 9:13 pm
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Rear Seat Entertainment System Control Module for the Renault Scenic, Laguna and Espace:  connector pin details.

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HOW TO SET PHILIPS DVD PLAYERS REGION FREE PROCEDURE

August 15, 2014, 11:25 am
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Philips DVD Players _ Make it Region free
Philips DFR 1600 / MX1060D
*  Press SYSTEM
* Press 1, 6, 7
* Press MUTE
Philips DVD 170 / DVD 825 / DVD 935
* Stop the player, no disc has to be inserted
* Press 2, 7, 4
* An input field shows up
* Enter one of the following codes: [RC 1: 00500128156: RC2: 00200128156]
* Press any key
Display turns red...
Caution: only works 25x
Philips DVD 622 / DVP 4000
  • Open tray
  • (DVP 4000: Press DISPLAY)
  • Press 2, 8, 1, 2
  • Press OK until 9 (multi-region) is displayed
  • (DVP 4000: Press DISPLAY)
  • Power off and on again.
Philips DVD 630 / DVP 630 / DVP 632 / DVP 642
  • Open the disc tray
  • Press 7, 8, 9
  • Press OK
  • Press the button for the desired RC (0 = code free)
  • Current RC should be displayed
  • Close the disc tray
Philips DVD 702 / DVD 704 / DVD 714 / DVD 953
  • Turn on the player (with no disc)
  • Press PAUSE
  • Press 3, 1, 4, 1, 5, 9
  • "Code" should be displayed
  • Press the button for the desired RC (0 = code free)
  • Press PAUSE
  • Power off.
Philips DVD 707
  • Press SETUP
  • Open the disc tray
  • Pres 8, 4, 2, 1
  • Current RC should be displayed
  • Press SELECT
  • Enter RC (9=code free)
  • Close the disc tray.
Philips DVD 703 / DVD 870L / DVD 870P / DVD 950
  • Turn on the player (without a disc inserted)
  • Press PLAY, 1, 5, 9
  • A field with lines appears
  • Enter 005 000 128 156 for RC1 or 002 000 128 156 for RC2
  • Press PLAY
  • Display turns red.[ Caution:  This only works 25x.]
Philips DVD 730
  • Turn on the player (without a disc inserted)
  • Press PLAY, 274159
  • A field with lines appears
  • Enter 222 222 005 255
  • Press PLAY
  • Display turns red.
  • Wait 20 secs
  • Turn the player off with the power switch.
Philips DVD 930
* Stop the player, no disc has to be inserted
* Press 2, 7, 4
An input field shows up
* Enter one of the following codes:
For RC 1: 0050001 281 56
For RC 2: 0020001 281 56
For RC 3: 0100001 281 56
For RC 4: 0120001 281 56
* Press any key
* Display turns red. [Caution: This only works 25x.]
Philips DVD 950
  • Press PLAY, 1, 5, 9
  • An input field shows up
  • Enter 008000 000 000 for RC1 or 001000 000 000 for RC2
  • Press PLAY
  • Display turns red.[Caution: This only works 25x.]
Philips DVD 737
  • Open the disc tray
  • Press MENU
  • Press STOP, REWIND
  • Enter 0 for multi-region.
Philips DVD 730
  • Stop the player, no disc has to be inserted
  • Press 2, 7, 4
  • An input field shows up
  • Enter one of the following codes: For RC 1: 0060001 281 56:  For RC 2: 0010001 281 56:  For RC 3: 0090001 281 56:  For RC 4: 0110001 281 56
  • Press any key
  • Display turns red. [Caution: This only works about 25x.]
Philips DVD 956
  • Press PLAY
  • Enter 159 101 040 000 140
  • Press PLAY.
Philips DVDR520H
  • Go into the main menu
  • Highlight "exit"
  • Enter 2, 9, 6, 0.
Philips DVDR990 / ProDVD 175
  • Turn on the player (with no disc / DVD mode)
  • Press PLAY, 1, 5, 9
  • A broken line is displayed
  • Enter 121 212 005 00
  • Press the button for the desired RC
  • Press PLAY (Limited to 25x.)
Philips DVP 3015K / DVP 3020 / DVP 3040 / DVP 3040K / DVP 5140 / DVP 5960
Method 1:
  1. Open the disc tray
  2. Press SETUP
  3. Navigate to the preferences page
  4. Enter 138931
  5. Select the region using UP/DOWN
  6. Press PLAY
Method 2:
Open tray
Press 9, 9, 9, 9, 0
Philips DVP 520 / DVP 524 / DVP 530 / DVP 532K / DVP 534K / DVP 3005 / DVP 3007 / DVP 3010 / DVP 3012 / DVP 5100 / DVP 5106K / DVP 5500S / DVP 5505S
(DVP 5100/5106: Press EJECT)
  • Press SYSTEM MENU
  • Go to "Preference Page"
  • Press 135566
  • A menu shows up
  • Select region with UP/DOWN (0 = codefree)
  • Press SYSTEM MENU.
Philips DVP 900SA / DVP 9000S
  • Switch on (with no disc)
  • Press PLAY on the player
  • Press 1, 5, 9 on the remote
  • Enter 222 222 005 255
  • Press PLAY on the player
Philips LX8000 / LX8000E / MX6000
  • Turn on the player (without a disc inserted)
  • Press PLAY
  • Press 1, 5, 9
  • A broken line is displayed
  • Enter "111" for RC1 or "221" for RC2
  • Enter "002" (LX 8000, LX 8000 SA (not E): "008")
  • At last "08"
  • Press PLAY twice [Limited to 25x]
Philips MX3900D / MX3910D / MX3950D / MX5500D / MX5600D / MX5700D / MX5800SA / MX5900SA / MX6000i
  1. Switch on (with no disc)
  2. Press DISC/MEDIA
  3. Wait for "no disc" message
  4. Press DISC MENU
  5. Press 1, 5, 9 slowly
  6. Enter 222 222 005 255
  7. Press DISC MENU
  8. Wait for "done" message
  9. Press STANDBY
Philips PET 724 / PET 800 / PET 805 / PET 810 / PET 824 / PET 825 / PET 1000 /PET 1002
  1. Open the disc tray
  2. Press SETUP
  3. Go to "Preferences"
  4. Press OK
  5. Press 212225
  6. Press LEFT, DOWN
  7. Enter region (0 = code free)
  8. Press SETUP
  9. Close the disc tray.
Philips MCD700 / MCD708
  • Switch on (with no disc)
  • Press SYSTEM
  • Highlight the "preferences page"
  • Press 811502
  • Change the region using UP/DOWN (0 = multi-region)
  • Press OK, SYSTEM.
Philips DVDR630VR / DVDR3320V
  • In DVD mode, press SYSTEM MENU
  • Scroll down to highlight the 'lock' symbol
  • Press seven times 0
  • Press OK.
Philips HTS3400D / HTS3401D / LX3000D / LX3500D / LX3700D / LX3750 /
MCD370 / MX2500D / MX2600 / MX3550 / MX3600D / MX3660D / MX3700D /
MX3800D / MX6050D
  1. Turn on the player (without a disc inserted)
  2. Press PLAY
  3. Press 159 023 793 90
  4. Press PLAY
  5. Confirmation should be displayed
  6. Turn the player off.
Philips LX7000SA / LX7100SA
  • Switch on (no disc)
  • Press PLAY, 159 721 030 08, PLAY
Philips MCD510
  • Change to Disc mode
  • Open tray
  • Press 123450.
Philips LX8200SA
  • Switch on (no disc)
  • Press PLAY, 159 222 036 08, PLAY.
Philips PET 700 / PET 710
  1. Switch the player on
  2. Open tray
  3. Press SETUP
  4. Select Preferences
  5. Press 252315
  6. Press LEFT, DOWN
  7. Press 0 for multi region
  8. Press SETUP to exit.
Philips FWD550 / FWD596 / FWD750 / FWD796
  • Switch on (no disc)
  • Press PLAY
  • Enter 159 023 798 90
  • Press PLAY
Philips MCD190
  • Turn on (with no disc)
  • Press 9, 7, 3, 5
  • Enter the region code menu
  • Change the region using UP/DOWN (0 = multi-region)
  • Press OK, SYSTEM.
Philips DVDR70 / DVDR72 / DVDR75 / DVDR77 / DVDR80 / DVDR610 / DVDR615 / DVDR725H / DVDR730 / DVDR880 / DVDR890 / DVDR985 / DVDR990 /
DVDR1000 / DVDR5350H / DVDR7250H / DVDR7300H / HDRW720
  • Turn on the player from the front panel (without a disc inserted)
  • Press TUNER or the blue button (or open the HDD browser)
  • Press PLAY
  • Enter 159 121 212 005 255
  • Press PLAY
  • Turn the player off.
Philips DVDR3300H / DVDR3330H / DVDR5330H
  • Turn on (with no disc)
  • Switch to DVD mode
  • Open tray
  • Press PLAY
  • Enter 159 064 135 124 255
  • Press PLAY
  • Turn off.
Philips 14PT6007, 20DV6942, 20PT6441, 21PT6818, 21PT6820, 29PD6932, DV900VHS, DV910VHS, DVD 1010, DVD 400AV2, DVD 405AT, DVD 420, DVD570M, DVD 619, DVD 621, DVD 715, DVD 720, DVD 721, DVD 731, DVD 740VR, DVD 750VR, DVD 752, DVD 755, DVD 755VR, DVD 757VR, DVD 782CH, DVD815, DVD 835, DVD 840, DVD 850, DVD 860, DVD 940, DVD 940AT, DVD 941, DVD 962SA, DVD 972, DVD 975SA, DVDR560H, DVDR600VR,DVDR616,DVDR980, DVDR1500, DVDR3360H, DVDR3370H, DVDR3400, DVDR5330H, DVDR7250H, DVP 620VR, DVP 721VR, DVP 3050V, DVP 3055V, DVP 3100V,
FWD5, FWD390, FWD790, HTS5700R, HTS9800W, JR32RWDVK, LX2000D, LX7500R, LX9000R, MCD295, MCD515, MCD702, MX5100VR, SACD962
No known unlock codes

Philips DVD 625 / DVD 626K / DVD 627K / DVD 628 / DVD 726 / DVD 726AT / DVD 726KT / DVD 727 / DVD 728 / DVD 728S / DVD 729 / DVD 731 / DVP 320 /
DVP 323 / DVP 720SA / DVP 762 / DVP 5900 / HTS3300 / HTS3450 / HTS3500 / HTS3610 / HTS5000W / HTS5310S / HTS5500C / HTS5510C / HTS6500 / HTS8010S / LX3600D / LX3900SA / LX3950 / LX8300SA / LX8500W
  • Open tray
  • (Press DISPLAY)
  • Enter 9, 9, 9, 9, 0
  • Close tray.
Philips DVD 615 / DVD 616K / DVD 623 / DVD 624AT / DVD 724 / DVD 724AT / DVD 733K / DVD 736K / DVD 762 / DVD 765K / DVD 781 / DVD Q30 / DVD Q35 / DVD Q40
  • Open the disc tray
  • Press 1, 1, 1, 1
  • Press the button for the desired RC (0 = code free)
  • Current RC is displayed
  • Close the disc tray.
Philips DVD 612 / DVD 620 / DVD 631 / DVD 700 / DVD 701 / DVD 705 / DVD 710 / DVD 711 / DVD 712 / DVD 718 / DVD 722 / DVD 723 / DVD 725 / DVD 743 / DVD 750 / DVD 751 / DVD 756 / DVD 761 / DVD 763SA / DVD 795SA / DVD 825 / DVD 865AT / DVD 940 / DVD 951 / DVD 952 / DVD 955 / DVD 957 / DVD 958 / DVD 960 / DVD 963SA / DVD Q50
You need an OneForAll6 remote (URC 7560)
  • Press DVD device button (set remote to DVD)
  • Press and hold MAGIC until it flashes 2x
  • Enter Setup Code (0539)
  • Press MAGIC again
  • Enter 085
  • Enter 222 222 005 255
  • (should be displayed)
  • Press PLAY. {For the remote "SBC RU880": Press and hold 1 and 6 until SYNTH is displayed.}
Philips 14PT6107 / 15PT6807
  1. Press 062596, MENU in TV mode
  2. Select "DVD"
  3. Press ENTER
  4. Select "Region"
  5. Enter 0 for multi-region
  6. Press MENU
  7. Turn the player off.
Philips DVD 580HC / 580MT
  • Open the disc tray
  • Press PROGRAM
  • Press 1, 3, 5, 6
  • Press the button for the desired RC (0=code free)
  • Press STOP five times
  • Press OK
  • Close the disc tray.
Philips DVD 633 / DVD 634 / DVD 640 / DVD 733
  • Open the disc tray
  • Press 0, 0, 0, 0, 0 (last digit is the region)
  • Close disc tray.
Philips DVD 590M
  • Select "disc menu"
  • Press 1, 9
  • Scroll to "region"
  • Set the region using the arrow keys
  • Press OK
  • Press EJECT.

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INFINITY IL120s SUB WOOFER - BIAS ADJUSTMENT - DISASSEMBLE

August 15, 2014, 9:27 pm
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IL120s ADJUST BIAS PROCEDURE [Mandatory when any output MOSFET transistors Q3,4,7,8 are replaced]
SPECIFICATIONS
Frequency Response:  28Hz - 150Hz (±3dB)
Maximum Amplifier Output: 500 watts (20Hz - 150Hz with no more than 0.1% THD)
Crossover Frequencies: 50Hz - 150Hz, 24dB/octave, continuously variable
Driver: 12" C.M.M.D.
Dimensions (H x W x D): 17-1/2" x 17-1/4" x 19-3/4"
Weight: 45 lb (20.5kg)
Optional Accessory: Bass Optimization
Test & Measurement Kit: Part Number: 335852-002
BIAS ADJUSTMENT
  • Amplifier should be unplugged and OFF.
  • Remove Amp assembly from cabinet; remove rear plastic cover if present. All wires exiting the cover can remain connected unless they will prevent you from removing the amplifier or accessing potentiometers on the Linear board PCB in the following steps.
  • Locate the Linear board assembly (PCB with the output transistors)
  • Adjust R11 and R27 fully Counter Clockwise. See diagram below.
  • Apply 120 VAC power to unit, Turn power switch ON.
  • Verify LED illuminates on the front gain control dial unless you have disconnected the plug.
  • Connect voltmeter set to DC mill volt range to twin pins on terminal J7, on Linear board
  • Verify initial voltage is less than 0.1 mV.
  • Adjust R11 Clockwise until voltmeter reads 0.3 mV+ the initial current from step #8.
  • Adjust R27 Clockwise until voltmeter now reads 0.6 mV + the initial current from step #8.
  • Turn amplifier OFF. Disconnect AC power to unit.
  • Remove voltmeter from terminal J7.
  • Replace cover (if present), wires if disconnected, and replace amplifier back into cabinet.

EXPLODED VIEW

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DENON DVD 1750 – DVD 1558 DVD VIDEO PLAYER – SMPS SCHEMATIC

August 17, 2014, 1:12 am
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DENON DVD 1750_DVD1558_Circuit diagram.
SMPS SCHEMATIC [Click on the schematic to magnify]

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