NEC Super Script 4400 Maintenance Manual page 248

Code Description of Error
Developer Clutch (DCLC)
D3
D4
Developer Clutch (DCLK)
Cause of Error
1. Loose/Broken connection
2. Incorrect voltage at
DCLC ON-N
3. MCTL PWB Failure
MCTL
12CN
DCL(Y)ON-P
3
1. Loose/Broken connection
2. Incorrect voltage at
DCLK ON-N
3. MCTL PWB Failure
MCTL
12CN
DCL(Y)ON-P
4
Clearance Method
1. Check connection between
Clutch (DCLC).
2. Check voltages below:
+24V
a) Voltage drop ( ) between ECN14-3 and
ECN2-8 then, replace the clutch (DCLC)
b) Voltage jump ( ) between ECN1-3 and
ECN2-12 then, replace IOD2 PWB
3. Replace MCTL PWB
IOD2
ECN1 ECN14
+24V-1
3
1
DCL(C)ON-P
3
ECN2
+ 24V-1 5
PGND
8
SGND
12
1. Check connection between
Clutch (DCLK).
2. Check voltages below:
a) Voltage drop ( +24V ) between ECN13-3 and
ECN2-8 then, replace the clutch (DCLK)
b) Voltage jump ( ) between ECN1-4 and
ECN2-12 then, replace IOD2 PWB
3. Replace MCTL PWB
IOD2
ECN1 ECN13
+24V-1
4
1
DCL(K)ON-P
3
ECN2
+24V-1 5
PGND
8
SGND
12
Service Error Codes
ECN14 of IOD2 and
DCLC
ECN13 of IOD2 and
DCLK
239