Sorvall TC6, Руководство по обслуживанию

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TC6 ® Troubleshooting
6-3
Table 6-1. TC6
®
Troubleshooting Chart (continued)
Problem Probable Cause Solution
Timer does not function cor-
rectly. (continued)
2. Cannot set timer.
3. Never starts or ends.
4. Unable to run timer on
forever or off forever.
5. Unable to set Hold.
6. Unable to get out of Hold.
7. Delay of an internal timer
bit.
8. Timer stops run at 10
minutes.
9. Timer stops in half the
set value. Erratic opera-
tion.
Door will not open at end of
run.
2. Loss of bit count. Defective
Display Printed Circuit Board.
3. Loss of bit brake, PR, Timer
clock, Time-out.
4. Loss of set encoder. Defec-
tive Control Printed Circuit
Board.
5. HOLD switch stuck OFF.
6. HOLD switch stuck ON.
7. Loss of bit in timing string.
8. a. Loss of U3 rectifier on
Control Printed Circuit
Board.
b. Missing capacitor on
Display P.C. Board.
9. Check for connection
between pins 2 and 3 of U11
on the Control P.C. Board.
1. Loss of 30 Vac.
2. Loss of latch release signal.
3. Shorted latch release.
4. DOOR switch stuck ON.
5. DOOR switch stuck OFF.
2. Replace the Display Printed
Circuit Board.
3. Replace the Display Printed
Circuit Board.
4. Replace the Control Printed
Circuit Board.
5. Replace HOLD switch.
6. Replace HOLD switch.
7. Replace the Control Printed
Circuit Board.
8. a. Replace the Control
Printed Circuit Board.
b. Install a capacitor (22pf)
across U2 pins 7 and 8
on the Display P.C.
Board.
9. Install a jumper between pins
2 and 3 of U11 on the Control
P.C. Board.
1. Locate problem in 30 Vac
supply. Repair.
2. Replace the Control Printed
Circuit Board.
3. a. Latch solenoid shorted.
Replace latch assembly.
b. 10 amp fuse on Power
Supply Board open.
Isolate and repair.
4. Replace DOOR switch.