- Press [MUTE] button once on Remote Control.
- Press [MUTE] button again to keep pressing.
- While pressing the [MUTE] button, press MENU button on TV set.
- Press MENU button on TV.
SERVICE MODE KEYS
- Screen adjustment mode ON/OFF: -/-- button (on Remote)
- Test signal selection : [POWER]button (on Remote)
- Selection of the adjustment items : Channel ▲/▼ (on TV or Remote)
- Change of the data value : Volume +/– (on TV or Remote)
- Adjustment menu mode ON/OFF : MENU button (on TV)
- Initialization of the memory (QA02) : CALL + Channel button on TV (▲)
- Reset the count of operating protect circuit to “00”: CALL + Channel button on TV (▼)
“GCUT” selection : 2 button
“BCUT” selection : 3 button
“SCNT” selection : 4 button
“COLP” selection : 5 button --- Color thickness correction. [Note: Displayed differently as shown below, depending on the setting of the receiving color system]
“TNTC” selection : 6 button
Convergence adj : YELLOW button
Self diagnostic display ON/OFF : 9 button.TO SELECT AN ITEM TO ADJUST
Every pressing of CHANNEL ▲button in the service mode changes the adjustment items. ▼ (Button for reverse order).
TO ADJUST DATA VALUE
Pressing of VOLUME +/– button will change the value of data in the range from 00H to FFH. The variable range depends on the adjusting item.
TO EXIT SERVICE MODE
Pressing POWER button to turn off the TV once.
INITIALIZATION OF MEMORY DATA OF QA02
After replacing QA02, the following initialization is required.
- Enter the service mode, then select any register item.
- Press and hold the CALL button on the Remote, then press the CHANNEL▲ button on the TV. The initialization of QA02 has been complated.
- Check the picture carefully. If necessary, adjust any adjustment item above.
- Perform “Auto tune” on the owner’s manual.
SELF DIAGNOSTIC FUNCTION
- Press “9” button on Remote Control during display of adjustment menu in the service mode. The diagnosis will begin to check if interface among IC’s are executed properly.
- Firmware: Version information of microprocessor. In case of file name : JH9 and Version : 1.00 indicates[JH9_100].
- Time: Total hour of turn the TV on. (Unit : H)
- Power : Operation number of protecting circuit ----"00" is normal. When indication is other than "00", over current apt to flow, and circuit parts may possibly be damaged.
- BusCont à"OK" is normal. When type name of semiconductor indicates.
- BLOCK. UV : TV reception mode.
6. Model name (7 digit)