Minolta CF910 Service Manual page 408

C0500, C0510
Step
1 Does H1 turn ON when the Power Switch
is turned ON after the malfunction has
been reset?
2 Is TH1 connected securely?
3 Is TH1 dirty?
4 Disconnect CN51. Is the resistance
across pins 1 and 2 on the thermistor side
infinite?
5 Disconnect CN9. Is there continuity
across pins 1 and 2 on the heater lamp
side?
C0520
Step
1 Does H1 remain lit after the copier has
completed warming up following a mal-
function reset?
2 Is TH1 connected securely?
3 Is TH1 dirty?
4 Disconnect CN51. Is the resistance
across pins
1 and 2 on the thermistor side 0 (zero)
ohms
(or close to 0)?
Check Item
Check Item
T-42
Result
NO Go to step 5.
NO Connect TH1 securely.
YES Clean or change TH1.
YES Change TH1.
NO Change PWB-I.
YES Change SSR1.
NO Change H1 or TS1.
Result
NO Go to step 4.
NO Connect TH1 securely.
YES Clean or change TH1.
YES Change TH1 or TS1.
NO Change PWB-I.
Action
Action