76232103 datasheet(7/70 Pages) TOSHIBA

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4. SELECTING THE ADJUSTING ITEMS

1) Every pressing of CH s button in the service mode changes the adjustment items in the order of table-2.

(t button for reverse order)

Refer to table-2 for preset data of adjustment mode.

(See SETTING & ADJUSTING DATA on page 15)

5. ADJUSTING THE DATA

1) Pressing of ; +/– button will change the value of data in the range from 00H to FFH. The variable range depends on

the adjusting item.

6. EXIT FROM SERVICE MODE

1) Press POWER button to turn off the TV once.

INITIALIZATION OF MEMORY DATA OF QA02

After replacing QA02, the following initialization is required.

1. Enter the service mode, then select any register item.

2. Press and hold the CALL button on the Remote, then press the CH s button on the TV. The initialization of QA02 has

been completed.

3. Check the picture carefully. If necessary, adjust any adjustment item above.

Perform “Auto tune” on the owner’s manual.

CAUTION: Never attempt to initialize the data unless QA02 has been replaced.

7. TEST SIGNAL SELECTION

1) Every pressing of a button on the Remote Control changes the built-in test patterns on screen as described below in

SERVICE MODE.

• All White

Signals

Picture

Signal off

ALL White

8. SELF CHECK FUNCTION

1) 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.

2) During diagnosis, the following displays are shown.

Part number of microprocessor (QA01)

Operation number of protecting circuit ----“000” is normal.

RF signal center frequency is locked.

Version information of microprocessor

23 * * * * * *

POWER

: 000

SYNC

: OK

MAIN

: V057

76232103 Datasheet(PDF) 7 Page - Toshiba Semiconductor

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