Repair Flow Chart (Continued)

C. Horizontal deflection output repair flow :

107T5

 

75

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1.Sympton : without H-deflection.

check Hsync 7605 base

check Hsync 7601 base

check Hsync 7501 pin26

replace 5156

check

Ok

check Hsync

Ok

check Hsync

190V

7615 drain

7501 pin28

 

 

 

 

No

 

No

 

 

check

 

refer 7501 check list

 

 

6611,7613,7614

 

or replace 7501

2.Sympton : East /West corr.

check 2614 parabola exist

check

7602 ~ 7604 parabola exist

check 7501

refer 7501

Pin24

check list

parabola exist

 

3.Sympton : H-linearity

(full freq. range)

4.Sympton : Rotation

5.Sympton : H_dc shift

enter factory mode

 

 

check

 

check linearity data

 

 

3620

 

 

 

 

in eeprom

 

 

7606

 

 

 

 

 

 

check cpu

7801

pin 30

check

 

 

check 7402

 

 

check

7403,7404

 

 

 

 

 

3422

 

 

 

 

 

 

 

check

 

 

check

 

 

3616

1601

 

 

 

 

 

 

 

 

 

check 3618

replace 5608

check cpu 7801 pin4 control range

6.Sympton : Focus

enter OSD

 

 

check

 

function

 

 

 

 

 

7616collector

 

disable morier

 

 

 

 

 

 

 

 

 

 

 

 

check

7501 pin 32

check 5671

Page 75
Image 75
Philips V30 manual Check list