1-36 (No.MB160)
SECTION 5
TROUBLESHOOTING
5.1
Amplifier
(1) Power Malfunction
Front board micon
VDD(5V) normal?
UIC1 pin No.17,46,90
Front board
Does UX102(10MHz)
oscillate?
Front board
When the power is
ON "H" displays at pin
No.80(UIC01)
Check the main board
PIC02(L4959)
Main board PIC02(L4959)
pin No. 2,10 input
voltage normal?
Front board
PWR-SENS
voltage normal?
(pin No. 9 ; 5V)
Replace micon
- Check the Main board
PIC02 (L4959)
- Check the Front board
UD103 (IN4002)
- Check the Main board:
GBU606(PBL403)RFS9
- Check the Power board
Fuse P/T,RFS2,RFS5,RFS6
- Check the Main board
PR212, PZ101, PR213
PR214, PR215, PD201
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
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 ...