Repair flow chart (continued) – Philips V30 User Manual

Page 75

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C. Horizontal deflection

output repair flow :

1. Sympton :

without
H-deflection.

2. Sympton :

East /West
corr.

check Hsync

7501 pin28

check

190V

check Hsync

7501 pin26

check Hsync

7605 base

check Hsync

7615 drain

check Hsync

7601 base

refer 7501 check list

or replace 7501

No

Ok

check

6611,7613,7614

Ok

No

replace 5156

4. Sympton :

Rotation

check

3618

enter factory mode

check linearity data

in eeprom

check 7402

check

3620
7606

check 7501

Pin24

parabola exist

check

7602 ~ 7604

parabola exist

check 2614

parabola

exist

3. Sympton :

H-linearity
(full freq. range)

replace 5608

check

7403,7404

refer 7501

check list

5. Sympton :

H_dc shift

check

1601

check

7501 pin 32

enter OSD

function

disable morier

check

7616collector

check

3616

6. Sympton :

Focus

check cpu

7801

pin 30

check cpu

7801 pin4

control range

check

3422

check

5671

9

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Repair Flow Chart (Continued)

107T5

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