1-26 (No.MB080)
5.2
Tuner Malfunction(FM/AM) : COMMON
Main board
CW102 PIN NO2, 9V
Voltage normal?
ICO1(LV23000)of tuner board,
Tuner BAND Switching?
(pin29)
ICO1(LV23000)
VT Level Changeable?
(pin28)
ICO1(LV23000)
if input normal?
(pin 1,4)
Check the Main board
EZD02, ER104.
Check the Tuner board
ICO1(LV23000)
pin 15,16,17,18
Check the Frpnt board
UIC01(micon -com)
Check the Front board
ICO1(LV23000) Oscillator
XTAL(75KHz)
Check the Tuner board,
FM pack,MW OSC,
MW ANT.
Check the Main board
EIC01(TDA7442D) Function IC
No
No
No
No
Yes
Yes
Yes
Yes
Summary of Contents for MX-GA8
Page 33: ...2 1 Block diagram ...
Page 36: ...2 4 Front section ...
Page 37: ...2 5 Pirnted circuit boards Main board Power board ...
Page 38: ...2 6 Front board Trans board ...
Page 39: ... M E M O ...
Page 57: ...3 17 MEMO ...