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M-L11
QQ
3 7 63 1515 0
7.1.2 SINGLE OPERATION METHOD
Voltage of each part and method of diagnosing each IC
Test Point for Service
COMPLEX ASSY
COMPLEX ASSY
COMPLEX ASSY
SIDE B
Diagnosis of Voltage of Each Part
1
FOR SERVICE 1. AC RY point of the COMPLEX Assy is short-circuited (AC RELAY ON), and the AC power code is inserted
in the power supply outlet.
Short
TE
L 13942296513
2
The voltage of each part is checked.
Refer to next page (diagnosis point).
Diagnosis of Each IC
1
FOR SERVICE 1. AC RY point of the COMPLEX Assy is short-circuited (AC RELAY ON), and the AC power code is inserted
in the power supply outlet.
2
FOR SERVICE 2. SPRY
3
FOR SERVICE 3. MUTE point of the COMPLEX Assy is short-circuited (MUTE OFF).
Short
4
The AUDIO signal (About 1kHz) is input to the input side of each IC, and the output is confirmed.
Refer to next page (diagnosis point).
OP amplifier (AMP Assy) . . . . . . IC3001, IC3901, and IC3451
Amplifier (AMP Assy) . . . . . . IC3301 and IC3401
www
Diagnosis of IC3021
Note: The single operation confirmation cannot be done, because IC3021(E-VOL) is
.
controlled with the microcomputer of Stereo CD tuner (XC-L11).
24
http://www.xiaoyu163.com
point of the COMPLEX Assy is short-circuited (SP RELAY ON).
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2 9
8
Q Q
3
6 7
1 3
1 5
Short
co
.
9 4
2 8
FOR SERVICE
1. AC RY
FOR SERVICE
3. MUTE
FOR SERVICE
2. SP RY
0 5
8
2 9
9 4
2 8
Short
m
9 9
9 9
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