JVC MX-GB6 Service Manual page 38
Compact component systems
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Also See for MX-GB6:
- Instructions manual (60 pages) ,
- Schematic diagrams (24 pages) ,
- Instructions manual (34 pages)
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5.2
Tuner malfunction (FM/AM) : COMMON
Check the Main board
EIC01(TDA7442D) Function IC
1-38 (No.MB160)
Main board
CW102 pin No.2, 9V
Voltage normal?
Yes
ICO1(LV23000)
of tuner board,
Tuner BAND Switching?
(pin29)
Yes
ICO1(LV23000)
VT Level Changeable?
(pin28)
Yes
ICO1(LV23000)
If input normal?
(pin 1,4)
Yes
No
Check the Main board
EZD02
Check the Tuner board
ICO1(LV23000)
No
pin 15,16,17,18
Check the Front board
UIC1 (micon).
Check the Front board
No
ICO1(LV23000) Oscillator
XTAL (75kHz)
Check the Tuner board,
No
FM pack,MW OSC,
MW ANT.
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