User's Manual

TM-800 UHF SERVICE MANUAL
125
Power supply of AF
IC126 is normal?
No receive
Output of IC126 is
normal?
Output of electronics
volume IC125 is
normal?
Check IC126
Output of IC104 is
normal?
The 2nd local oscillator
works normally?
L135 works normally?
Is there any input in
IC119 PIN16 IF?
Is there any RF signal?
Replace L135
Check X105
Check IC125
Check work status of
IC119 &peripheral
components
Check VCO
FPC & Speaker
work normally?
No
No
No
Check Q601 pass
Yes
Output of IC106 is
normal?
Check IC104
Output of IC121 is
normal?
Check IC106
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
Check power
supply circuit.