Sharp 21YF30, Руководство по обслуживанию

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3
3-1 3-2
21YF30
ADJUSTMENT PRECAUTIONS
This model’s setting are adjusted in two different ways: through the I
2
C bus control and in the conventional
analog manner. The adjustments via the I
2
C bus control include preset-only items and variable data.
CAUTION : MAKE SURE TV SET IN “NORMAL CONDITION” BEFORE SWITCH TO SERVICE MODE FOR
ADJUSTMENT.
1. Setting the service mode by the microprocessor.
1
. Short JA 304 & JA 307 , then tv set will switch to the service mode position, and the microprocessor
is in input mode. (Adjustment through the I2C bus control). (Use JWS Key to set as well).
2
. Press the MENU key on the remote controller to get ready to select the mode (Adjustment
mode, Setting mode, Check mode and Option mode) one by one.
3
. Press the CH DOWN / UP key on the remote controller to select the items in Adjustment mode,
Setting mode and Option mode.
4
. Using the VOLUME UP/ DOWN key on the remote controller, the data can be modified.
5
. In Check mode the data cannot be changed.
6
. Disable the short of JA 304 & JA 307, it will switch to the normal mode (OFF) position, and the
microprocessor is out of the service mode.
2.Factory Presetting.
1
. Short JA 304 & JA 307, then turn ON the main power and release the shorted JA304 & JA307
after raster appeared on the screen. Initial values are automatically preset, only when a new
EEPROM is used. (Judge with the first 4 bytes.)
2
. The initial data are preset as listed in page 4-2, 5-1, 5-2 & 6-2.
3
. Make sure the data need modification or not(Initial data).
Note: Once the chassis has been assembly together and ready to be POWER ON for the FIRST TIME, make
sure to short JA304 & JA307 to switch to the service mode position first and then turn on the main
power switch (See 2-
1 1 1 1 1
above).
Precaution: If haven’t done this initiation, it may possibly generate excessive Beam current.
3. For reference please check with memory map.
ADJUSTMENT ITEM
***Below is the adjustment items that we should done, PLS FOLLOW THE PROCEDURE.
Otherwise some adjustment items will not be accurate.
NO *** ADJUSTMENT ITEM EFFECTIVE MODEL REVISION
1 BUS SET UP ALL
2 OPTION SET UP ALL
3 V-SIZE (50 Hz) ALL
4 V-SHIFT (50 Hz) ALL
5 H-SHIFT (50 Hz) ALL
6 H-VCO ALL
7 VIF-VCO ALL
8 S-TRAP fo ALL
9 RF-AGC ALL
10 PURITY ADJ ALL
11 CONVERGENCE ADJ ALL
12 FOCUS ADJ ALL
13 SCREEN ALL
14 WHITE BALANCE ALL
15 SUB-BRIGHTNESS ALL
16 SUB-CONTRAST ALL
17 SUB-TINT ALL
18 SUB-COLOR ALL
19 MAX BEAM CHECK ALL
20 BEAM PROTECTOR CHECK ALL
21 HV PROTECTOR CHECK ALL
22 OTHER PROTECTOR CHECK ALL
23 AV OUT CHECK ALL
24 AV IN CHECK ALL
25 CONTRAST CONTROL CHECK ALL
26 COLOR CONTROL CHECK ALL
27 BRIGHTNESS CONTROL CHECK ALL
28 TINT CONTROL CHECK ALL
29 SHARPNESS CONTROL CHECK ALL
30 CH DISPLAY COLOR CHECK ALL
31 NORMAL DISPLAY CHECK ALL
32 WHITE TEMP CONTROL CHECK ALL
33 COLOR SYSTEM CHECK ALL
34 SOUND SYSTEM CHECK ALL
35 NOISE MUTE CHECK ALL
36 HEAD PHONE CHECK ALL