Trouble-Shooting - Pioneer KEX8547ZT-91/EW Service Manual

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7.1.3 TROUBLE-SHOOTING

QQ
3 7 63 1515 0
Is B-UP ON?
bsens terminal
Pin 75(IC601)
YES
Is ACC ON?
asens terminal
Pin 73(IC601)
YES
Does illumination
come on?
YES
Is PWR-ON enabled?
YES
Is voice output?
YES
TE
L 13942296513
Is VOL adjustment
enabled?
YES
Normal operation
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Check +B
NO
(Check a power supply.)
Turn on ACC
NO
(Check a power supply.)
Check illumination circuit?
NO
ISENS terminal Pin 2(IC601)
Check PWRSW terminal
NO
power Pin 69(IC601)
Is amplifier connected
NO
correctly?
NO
Connect amp correctly
Check encoder input.
NO
ENC1- Pin 65(IC601)
ENC1+ Pin 63(IC601)
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Is any sound of FM, AM and
YES
TAPE (internal sources) output?
YES
Are FM and AM
sounds output?
YES
Is TAPE sound output?
YES
Q Q
3 6 7 1 3 1 5
IsTAPE mechanical unit
operated normally?
YES
Check the following terminals
SYSPWR Pin1(IC601)
co
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KEX-M8547ZT/EW
7
9 4 2 8
Check the following terminals
NO
SYSPW Pin 1(IC601)
sysmute2 Pin 5(IC601)
sysmute1 Pin 6(IC601)
Check the following terminals
NO
FMPW Pin 43(IC601)
AMPW Pin 44(IC601)
NO
Recheck hardware
0 5 8 2 9 9 4 2 8
NO
Check the following terminals
stby Pin 90(IC601)
CM Pin 89(IC601)
SC1 Pin 88(IC601)
SC2 Pin 87(IC601)
m
8
9 9
A
B
C
9 9
D
E
F
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