32
202P7 CRT
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Repair Flow Chart (Continued)
C. Horizontal deflection
output repair flow:
1. Symptom:
without
H-deflection
Check Hsync
7502 base
Check Hsync
7501 base
Check Hsync
7421 Pin8
Check Hsync
7421 Pin15
Refer 7421 check list
or replace 7421
OK
NO
OK
Replace 5156
Check 210V
Check Hsync
7673 drain
2. Symptom:
East/West corr.
Check 2566
parabola
exist
Check
7424, 7427
parabola exist
Check 7421
Pin 11
parabola exist
Refer 7421
check list
3. Symptom:
H-linearity
(full freq. Range)
Enter factory mode
check linearity data
in EEPROM
Check
3524, 7605
Replace 5603
Check CPU
7301 Pin4
Check CPU
7301 Pin38
control range
Check
7421 Pin32
4. Symptom
Rotation
Check
7587, 7588
Check 7586
Check 3585
5. Symptom:
H-dc shift
Check 2515
Check 3616
6. Symptom:
Focos
Check
7601 collector
Check 5601
Enter OS
D
function
disable morie
Summary of Contents for 202P70/00
Page 37: ...37 202P7 CRT Go to cover page Wiring Diagram ...
Page 41: ...41 202P7 CRT Go to cover page Main Board C B A 1 ...
Page 42: ...42 Main Board C B A 2 Go to cover page 202P7 CRT ...
Page 44: ...44 Go to cover page Video Board C B A 1 202P7 CRT ...
Page 45: ...45 202P7 CRT Go to cover page Video Board C B A 2 ...
Page 47: ...47 202P7 CRT Go to cover page TERMINAL Board C B A 1 ...
Page 48: ...48 TERMINAL Board C B A 2 Go to cover page 202P7 CRT ...
Page 50: ...50 Driver Board C B A Go to cover page 202P7 CRT ...
Page 51: ...51 202P7 CRT Go to cover page KEY CONTROL Schematic Diagram C B A ...
Page 52: ...52 MHR Schematic Diagram C B A Go to cover page 202P7 CRT ...