4 - 4
Troubleshooting > Trouble Diagnosis
(3) No power
Check fuse
(F3501)
Yes
No
Yes
Fuse replacement
TL3511 : 9V (+B)
No
D3007 or C3501 faulty
TL3005 or TL2501 :
5V
Yes
TL3006 or TL4006 :
3V
Yes
TL3007 or TL1212 :
2V
Yes
TL3008 : 15V
TL3009 : -7V
Yes
TL4023 : 6V
No
IC3001-44 : 8V
Yes
Q4105 faulty
No
IC3001 faulty
No
IC3001-35 : 8V
Yes
Q4106 faulty
No
IC3001 faulty
No
IC3001-2 : 8V
Yes
Q4107 faulty
No
IC3001 faulty
TL3009 : 7V
No
No
IC3001 faulty
IC3001-41 : 8V
No
Yes
D3005 faulty
Yes
Q3004 faulty
No
D3006 faulty
Yes
No
IC3002 faulty
Correct the connections
of circuit boards
Yes
Circuit No.
1000 to 1099
1100 to 2999
3000 and higher
Circuit Board
SP
PC
CSR