1-38 (No.MB160)
5.2
Tuner malfunction (FM/AM) : COMMON
Main board
CW102 pin No.2, 9V
Voltage normal?
ICO1(LV23000)
of tuner board,
Tuner BAND Switching?
(pin29)
Check the Main board
EZD02
No
Yes
Check the Tuner board
ICO1(LV23000)
pin 15,16,17,18
Check the Front board
UIC1 (micon).
No
ICO1(LV23000)
VT Level Changeable?
(pin28)
Yes
Check the Front board
ICO1(LV23000) Oscillator
XTAL (75kHz)
No
ICO1(LV23000)
If input normal?
(pin 1,4)
Yes
Check the Tuner board,
FM pack,MW OSC,
MW ANT.
No
Yes
Check the Main board
EIC01(TDA7442D) Function IC
Summary of Contents for CA-MXGB5
Page 45: ... M E M O ...
Page 46: ...2 1 Wiring diagram ...
Page 47: ...2 2 ...
Page 50: ...2 5 Standard schematic diagrams Main section MX GB6 ...
Page 53: ...2 8 safety assurance parts placing those parts make se the specified one ...
Page 54: ...2 9 Main section MX GB5 ...
Page 58: ...2 13 FL Key control section common ...
Page 59: ...2 14 ...
Page 60: ...2 15 CD section common ...
Page 61: ...2 16 ...
Page 62: ...2 17 Printed circuit boards Main board ...
Page 63: ...2 18 Amp board ...
Page 64: ...2 19 Front board ...
Page 65: ...2 20 CD board ...