10. Trouble Shooting; No Power - KERN KFB-TM Service Manual

10. TROUBLE SHOOTING

11

11.1 No Power

Ok
- 39 -
START
Check power
switch connector
Ok
Check Battery
Voltage >6V
Ok
Check DU 4
pin 1 Out put 5V
CHK M/B DU3
pin 8 high level
when power on
and return to low
level later.
Ok
Check ST
(11.0592Mhz)
Check M/B DU1
Ok
and around circuit
Replace power switch or
connecter
Not good
Recharge the battery or
Replace the battery
Not good
Check DU4 and around circuit
Not good
Check M/B DU3 and around
circuit
Check ST and around circuit
Not good
Not good
KFB-TM/KFN-TM-SH-e-1410