- The Service Alignment Mode (SAM) is used to align the set and/or adjust the option settings and to display/clear the error code buffer values.
- To enter the Service Alignment Mode (SAM), press the following key sequence on the remote control transmitter: {0-6-2-5-9-6-INDEX or Status.}
- Do not allow the display to time out between entries while keying the sequence
- It is also possible to enter the Service Alignment Mode by pressing the“VOLUME +” and “VOLUME -” key on the local keyboard simultaneously for at least 4 seconds when the set is in SDM.
- To exit the Service Alignment Mode, press the Power button.
ITEMS EXPLANATION
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Operation Hours (Run Timer):
This display indicates the accumulated total of operational hours. (Shown in hexadecimal format).Software identification of the main micro controller.(A101US1-2.06)
- A10 is the engineering chassis name for the A10 PTV chassis
- 1US1 is a character combination to indicate the software type and the supported languages: 3AP1 or 3AP2 are also possible in the Asian Pacific Region.
- US = United States, AP = Asia Pacific
- 1 = Main Software language version number
- 2.06 = sub-version number.
Displays the 7 most recent errors. The most recent error is displayed at the upper left.
Option bytes (8 codes possible):
Summary of options is explained below.
Sub menus are listed in a scroll menu.
SAM MENU CONTROL
- Menu items may be selected using the cursor ▲/▼ keys.
- The selected item will be highlighted.
- When not all menu items will fit on the screen, pressing the cursor ▲/▼ keys on the remote transmitter will display the next/previous menu items.
- (de)activate the selected menu item (e.g. GEOMETRY)
- change the value of the selected menu item ( e.g. VERSLOPE )
- activate the selected submenu (e.g. SERV-BLK).
NORMAL USER MENU ACCESS
- Pressing the “MENU” button on the remote control switches between the SAM and the normal user menus (with the SAM mode still active in the background).
- Pressing the “MENU” key in a sub-menu will return the screen to the previous menu.
ERROR CODE BUFFER & ERROR CODES
The error code buffer contains all errors detected since the last time the buffer was erased. The buffer is written from left to right. When an error occurs that is not yet in the error code buffer, the error code will appear at the left side and all other errors shift one position to the right.The error code buffer will be cleared in the following cases:
- By activating CLEAR ERRORS in SAM menu
- Exiting SDM or SAM with the “Standby" command on the remote control
- Upon automatic reset when content has not changed for 50 consecutive hours.
Examples:
ERROR: 0 0 0 0 0 0 0 :No errors detected
ERROR: 6 0 0 0 0 0 0 :Error code 6 is the last and only detected error
ERROR: 9 6 0 0 0 0 0 :Error code 6 was first detected and error code 9 is the last detected (newest) error
The contents of the error buffer can also be displayed by use of the “blinking LED” procedure, if no picture is available.
ERROR CODE DEFINITION
In case of non-intermittent faults, clear the error buffer before starting the repair; to make sure “old” error codes are not present. If possible check the entire content of the error buffers. In some situations an error code is only the result of another error code (and not the actual cause).
Note: a fault in the protection detection circuitry can also lead to a protection.
Error codes 1,2, 3, and 4 are protection codes, and in this case the supplies of some circuits will be switched off. Also in protection, the LED will blink the number of times equivalent to the most recent error code.
ERROR CODE TABLE
CLICK ON TABLES TO ZOOM IN
A10 PTV-MODEL LISTING & SOFTWARE
LED BLINKING PROCEDURE & CODES
The contents of the error buffer can also be made visible through the “blinking LED” procedure. This is especially useful when there is no picture.
- When the SDM is entered, the LED will blink the number of times equal to the value of the error code.
- Upon entry into the SDM, the LED will blink the contents of the error buffer.
- Error-codes greater than/equal to 10 are shown in the following manner: A long blink of 750 mSeconds indicating the decimal digit, followed by a pause of 1500 mSeconds.
- The LED will then blink the number equal to the error code.
- When all error-codes are displayed, the sequence is finished with an LED display of 3 seconds.
- At this point the sequence will begin again.
Error buffer: 12 9 6 0 0
After entering SDM:
- The sequence will begin with 1 long blink of 750 mSeconds, then pause 1500 mSeconds, then blink twice (indicating error code 12), then the LED will pause for 3 seconds, then blink 9 times (indicating error code 9), then the LED will pause for 3 seconds, then blink 6 times (indicating error code 6), then pause 3 seconds and blink for 3 seconds again, ending the blinking sequence.
TROUBLESHOOTING TIPS
Power Supply Circuit
When the set is turned On, the Main Switch Mode power supply is turned On This supply produces the +130 volt, +32 volt,-32 volt, two +15 volt, and Audio supplies. When IC 7302 develops a normal steady state operation, resistors 3324,3323, and 3322 sample the 130-volt supply. This sample voltage is then sent to shunt regulator 7303, which drives the feedback opto isolator 7303.The feedback voltage on Pin 14 is then compared with an internal 2.5 volt reference by comparator "C". Comparator "C" then sets the reference voltage on the inverting side of comparator "B" to control the On time of the drive at Pin 3.If the voltage on Pin 14 increases due to the 130 volt supply increasing, the On time of the pulse on Pin 3 will be reduced. If the 130 volt supply decreases, the voltage on Pin 14 would decrease, causing the On time of the pulse on Pin 3 to increase. This is used to keep the 130 volt supply at the correct voltage. Variable resistor 3322 is used to adjust the 130-volt supply to the correct level.
The over voltage protection circuit of the IC will shut the IC down if the VCC level on Pin 1 exceeds 17 volts. To troubleshoot this circuit, first check the On/Off line from the Small Signal Panel to ensure that it is going Low. Then check for the presence of start up voltage on Pin 1 of the regulator IC 7302.If the IC is working correctly, this voltage will be changing from 9.4 to 14.5 volts. If the start up voltage is not present, check the start-up resistor 3300 and the bridge rectifier. If the voltage on Pin 1 is changing, check the drive signal on Pin3. Then check for signal on the gate and drain of 7301.An excessive load on the secondary, a short on the 130 volt line for example, would cause the supply to pulse with little or no voltage on the secondary.
PICTURE PROBLEMS
Picture Too Dark or Too Bright
- Press “Smart Picture” button on the remote control. If this improves the picture, increase / decrease the brightness value or increase / decrease the contrast value.
- Enter the Customer Service Mode. If this improves the picture, exit Customer Service Mode, then Increase / decrease the brightness value or increase / decrease the contrast value.
- Press “Smart Picture” button on the remote control. If this improves the picture, decrease the sharpness value.
- Enter the Customer Service Mode. If this improves the picture. Decrease the sharpness value.
Snow is an antenna or antenna connector problem.
Check tuner and AGC.
Black and White Picture
- Press the “Smart Picture” button on the remote control. If this improves the picture, increase the color value.
- Enter the Customer Service Mode. If this improves the picture. Increase the color value.
- Press the “Smart Picture” button on the remote control. If this improves the picture, decrease the contrast value.
- Enter the Customer Service Mode. If this improves the picture. Decrease the contrast value.
- No sound or sound too loud (after channel change / switching on)
- Enter the Customer Service Mode. If the volume is OK, increase / decrease the volume level.
Universal remote control set-up codes for Philips Brand Tvs
With GE Remote control: 0062 0204 0184 0208 0205 0206 0207 0004 0189 0183 0199 0200 0288 0456 0003 0008 0068 0075 0086 0087 0141 {734, 743, 744, 745, 755, 814, 823, 824, 825}With RCA RCR 311W: 1002, 1009, 1014, 1036, 1051, 1056, 1060, 1061, 1066, 1067,1072, 1073, 1074, 1077, 1078, 1082, 1086, 1136, 1152, 1156, 1166, 1174, 1175, 1180, 1181
With RCA RCR 312W: 11454, 10054, 10690, 11744, 11867
To 6-in-one Universal remote: 016,017,019,021,022,025,075,081 082,087,088,089,099,100,101,102
To other brand Universal remotes: 0037 0054 0556 0056 0238 0012 0721 0000 0554 0019 0191 0020 0087 0774 0193 0747 0423 0187 0186 0343 0178 0108 0570 0024 0374 0028 0030 0092 0032 0051 0772 0009 0200 1154 1454 0080 1756