AR-C170 (serv.man28). Troubleshooting - Sharp Copying Equipment Service Manual (repair manual). Page 3

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AR-C170M  TROUBLESHOOTING  11 - 3
6. Details
L3
00
Mirror return trouble
L4
02
Paper feed motor lock trouble
06
Transfer belt lift motor trouble
07
Transfer belt motor trouble
11
Shift motor trouble
L8
01
Full wave signal not provided
02
Full wave signal width abnormality
04
Main power switch abnormality detection
PF
00
RIC copy inhibit signal reception 
U0
00
ICU-OPE communication trouble (ICU/OPE 
detection)
U1
01
FAX battery abnormality
02
RTC read trouble
U2
00
EEPROM read/write error (ICU detection)
11
EEPROM check sum error (ICU detection)
22
FAX backup SRAM memory check sum error
30
Production No. data discrepancy (ICU 
 ICU)
80
EEPROM read/write error (SCN)
81
Adjustment value check sum error (SCN)
90
EEPROM read/write error (PCU)
91
Adjustment value check sum error (PCU)
U4
02
ADU alignment plate operation abnormality
U6
00
Desk communication trouble
01
Desk tray 1 lift motor trouble
02
Desk tray 2 lift motor trouble
03
Desk tray 3 lift motor trouble
09
LCC lift motor trouble
10
Desk transport motor trouble
20
LCC communication trouble
21
LCC transport motor trouble
22
LCC 24V power abnormality
50
Desk incompatibility trouble
51
LCC incompatibility trouble
U7
00
RIC communication trouble
UC
02
CPT-ASIC trouble (MFP PWB trouble)
Main 
code
Sub 
code
Content
Main 
code
Sub 
code
Title
Transfer charger trouble (Black)
C2
10
Display
Lamp/Message
Phenomenon Detail
The difference between the 
belt surface output and the 
K-color patch density output 
does not reach the specified 
level. (Judged when 
installing a new developing 
unit.)
Section
Transfer
Case 1
Cause
TC-K output abnormality
Check & 
Remedy
TC-K analog input/output 
abnormality.
Replace the TC PWB.
Case 2
Cause
MC output abnormality
Check & 
Remedy
Replace the MC PWB.
Case 3
Cause
Transfer unit trouble
Check & 
Remedy
Replace the transfer unit.
Case 4
Cause
PCU PWB trouble
Check & 
Remedy
Replace the PCU PWB.
Case 5
Cause
Connector, harness trouble 
(PCU PWB, TC PWB, MC 
PWB, transfer unit)
Check & 
Remedy
Check contact. Replace the 
harness. Replace the PWB.
Main 
code
Sub 
code
Title
Image data memory trouble
E7
01
Display
Lamp/Message
Phenomenon Detail
The ICU image data 
memory (SDRAM) cannot 
be detected as 256MB or 
more. The required SDRAM 
capacity for the model is not 
provided.
Section
ICU PWB
Case 1
Cause
The SDRAM of ICU PWB is 
not installed. The SDRAM 
of ICU PWB is improperly 
installed.
Check & 
Remedy
Check installation of the 
SDRAM of ICU ASIC PWB.
Case 2
Cause
The SDRAM of ICU PWB 
does not operate properly.
Check & 
Remedy
Use SIM 22-10 to check the 
capacity of the SDRAM. 
Replace the SDRAM of ICU 
PWB.
Case 3
Cause
ICU PWB abnormality
Check & 
Remedy
Replace the ICU PWB.
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