Pioneer SC-63 Service Manual page 31

5
A
Check DISPLAY ASSY
IC3001 58 pin (POWKEY)
HL when press power key?
Yes
Check DISPLAY ASSY
CN3001 27 pin (DVCPOW)
LH when press power key?
Yes
Check DISPLAY ASSY
CN3001 19 pin (ACRY)
LH when press power key?
Yes
Check PRIMARY ASSY
JP51 7 pin (ACRY)
LH when press power key?
Yes
Does RY71 turn on
when press power key?
Yes
Check DIGITAL MAIN ASSY
CN601 13 pin (DVCPOW)
LH when press power key?
Yes
Diagnose or replace
DIGITAL MAIN ASSY
5
6
No
Check POWKEY signal path
No
Check DVCPOW signal path
No
Check ACRY signal path
Check ACRY signal path
No
DISPLAYA-REGDIGITAL
MAINPRIMARY ASSY
No
Check the circuits arround RY71
or replace PRIMARY ASSY
Check DVCPOW signal path
No
DISPLAYA-REG 
DIGITAL MAIN ASSY
SC-63
6
7
Replace DISPLAY ASSY
No Problem
or replace IC3001
Replace DISPLAY ASSY
No Problem
or replace IC3001
7
8
A
B
C
D
E
F
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