Philips DELLP1230 Service Manual page 80

Dell P1230 M25P
80
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C. Horizontal deflection
output repair flow :
1. Sympton :
without
H-deflection.
replace 5543
2. Sympton :
East /West
corr.
3. Sympton :
H-linearity /H-DC
(full freq. range)
4. Sympton :
rotation
5. Sympton :
H_dc shift
6. Sympton :
Focus
Repair Flow Chart
check B+ Control
check B+ Control
7541 base
7422,7423 base
check
230V
check 2443
parabola
exist
enter factory mode
check linearity data
in eeprom
refer cpu
chece list
check cpu
pin 2,4
check check 7586
7502
pin 1,4,8
check
7545 collector
7542,7543
7544 emitter
enter OSD
function
7601collector
disable morier
check Hsync
Ok
7541 drain
No
check
5542,3546
check 7421
pin11
parabola exist
check
3528/7503
7504 emitter
check
3590/7587
/7588
check check cpu
7301 pin2
control range
check check
7421 pin 32
check B+ Control
Ok
7421 pin6
No
refer 7421 check list
or replace 7421
refer 7421
check list
check 7505
pin 2,3,8
replace 3523
check cpu
7301 pin38
control range
check
3617/5672/5601