4．Adjustment - Haier HTAF21C Service Manual

GND(out 1) 3
Out 1 (-) 4
Standby 5
In 1 6
4. N301: Vertical output (TDA8357A)
Symbol PIN
INV IN 1
INV IN 2
Vcc 3
V OUT 4
GND 5
5. U101：Tuner
PIN Function
1 AGC
2 vacant
3 Gnd
4 SCL
5 SDA
6 +5V
4. ADJUSTMENT
Specific operation: use remote controller
Press "MUTE" "CALL"
Press [Program+] / [Program-] to select items and press [VOLUME+] / [VOLUME-] key, to make data
adjustment of corresponding factory menus.
Press "EXIT" key to exit factory mode.
Focus adjustment
1. Receive a crosshatch signal.
2. While watching the screen, adjust the FOCUS VR on the FBT to make the vertical and horizontal
lines as fine and sharp as possible.
Geometrical adjustment
Receive PAL standard complete pattern signal.
Adjustment steps：
a) Adjust VSL, to the centre horizontal line just appears from half bottom shadow.
b) Adjust VAM, to get 92% of vertical picture contents would be displayed on CRT.
c) Adjust VSH, the centre horizontal line corresponds to CRT vertical centre.
d) Adjust SCL, to the linearity of P card field is in proper condition.
e) Adjust HSH, to get the picture horizontal centre correspond to CRT horizontal centre.
Receive NTSC signal and repeat above adjustment.
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Ch 1Ground VOL
Ch 1 output (-) Out 2 (-)
Mute input GND(out 2)
Ch 1 input Out 2 (+)
Function Symbol
Input PUMP UP
Input V OUT
Pump up power V PRO
Vertical output V FEEDBACK
Ground
PIN Function
7 +5V
8 vacant
9 Vt 33V
10 Gnd
11 IF Out
"-\--" "CALL" "MUTE" buttons in sequence to enter into factory mode.
8
9 Volume Control
10 Ch 2 output (-)
11 Ch 2 Ground
12 Ch 2 output (+)
PIN Function
6 Pump up power
7 Vertical output
8 Vertical protection
9 Vertical feedback