Service Error Codes
249
TROUBLESHOO
TING
1. Check
connector LCN3
2. Replace Optical Unit.
3. Replace MCTL P.W.B.
L1
Code
Description of Error
Cause of Error
Clearance Method
Optical Unit
L2
1. Loose/Broken connection
2. Optical Unit Failure
3. MCTL P.W.B. Failure
Optical Unit
(Beam Detecting Error)
1. Loose/Broken connection
2. Optical Unit Failure
3. MCTL P.W.B. Failure
1. Check these connections:
a) PDCN connector
b) LCN1 and LCN of MCTL
.
2. Replace Optical Unit.
3. Replace MCTL P.W.B.
MCTL
LCN
SGND
BDT
LDU
PDCN
LCN3
SM
PD
LCN1
+5V-1R
Optical Unit
SM
20
1. Check these connections:
a) LCN3
b) PDCN
c) LCN1 and LCN of MCTL
.
2. Replace Optical Unit.
3. Replace DC Power Supply(LVPS)
4. Replace MCTL P.W.B.
Optical Unit
LL
1. Loose/Broken connection
2. Optical Unit Failure
3. DC Power Supply(LVPS)
Failure
4. MCTL P.W.B. Failure
MCTL
SCMCLK
LDU
LCN3
SM
PD
Optical Unit
SM
1
2
3
4
5
SCMRDY
SCMON
GND
+24V-1
20
MCTL
LCN
LDU
PDCN
LCN3
SM
PD
LCN1
Optical Unit
20
5
3
Содержание Super Script 4400
Страница 1: ...NEC SuperScript 4400 4400N Maintenance Guide 18 September 1998 Part Number 703 A0240 001 ...
Страница 3: ...i SuperScript 4400 Maintenance Guide ...
Страница 61: ...52 SuperScript 4400 Maintenance Guide ...
Страница 71: ...62 SuperScript 4400 Maintenance Guide ...
Страница 125: ...116 SuperScript 4400 Maintenance Guide ...
Страница 145: ...136 SuperScript 4400 Maintenance Guide IOD2 P W B Registration Clutch Side Cover R Cleaner Clutch Fuser Clutch C ring ...
Страница 174: ...Replacement Procedures for Maintenance Parts 165 PRINTER MAINTENANCE Controller Fan Fan Case Interlock Switch ...
Страница 189: ...180 SuperScript 4400 Maintenance Guide Toner Sensor TPD Toner Sensor TTR Fram Ass y ...
Страница 193: ...184 SuperScript 4400 Maintenance Guide Stay A Ass y Transfer Drum ...
Страница 197: ...188 SuperScript 4400 Maintenance Guide Hinge arm Hinge holder Front hinge L Front Inner Cover Front Cover Unit ...
Страница 203: ...194 SuperScript 4400 Maintenance Guide Stay A Ass y ...
Страница 267: ...258 SuperScript 4400 Maintenance Guide ...
Страница 273: ...264 SuperScript 4400 Maintenance Guide ...
Страница 287: ...XIV SuperScript 4400 Maintenance Guide F G H I J ...
Страница 289: ...XVI SuperScript 4400 Maintenance Guide ...
Страница 290: ...SuperScript 4200N and 4400 Series Printers Maintenance Guide March 1999 703 A0322 001 Addendum ...
Страница 293: ...ii Superscript 4200N and 4400 Series Maintenance Guide Addendum ...
Страница 295: ...iv Superscript 4200N and 4400 Series Maintenance Guide Addendum ...
Страница 302: ...7 ...
Страница 314: ...19 NOTES ...
Страница 315: ...20 Superscript 4200N and 4400 Series Maintenance Guide Addendum ...
Страница 316: ......
Страница 317: ...P N 703 A0322 001 NEC Technologies Inc 1250 N Arlington Heights Rd Itasca IL 60143 www nectech com ...