MX-6500N, MX-7500N (serv.man21). Section 7 Troubleshooting — Sharp Copying Equipment Service Manual (repair manual)

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MX-6500N MX-7500N (serv.man21)
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66
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Service Manual
Brand
Device
Copying Equipment / Section 7 Troubleshooting
File
mx-6500n-mx-7500n-sm21.pdf
Date

View Sharp MX-6500N / MX-7500N (serv.man21) Service Manual online

MX-7500N  TROUBLESHOOTING  7 – 1
MX-7500N
Service Manual
 
[7] TROUBLESHOOTING
1. Error code and troubleshooting
A. General
When a trouble occurs in the machine or when the life of a consum-
able part is nearly expired or when the life is expired, the machine
detects and displays it on the display section. This allows the user
and the serviceman to take the suitable action. In case of a trouble,
this feature notifies the occurrence of a trouble and stops the
machine to minimize the damage.
B. Function and purpose
1)
Securing safety. (The machine is stopped on detection of a
trouble.)
2)
The damage to the machine is minimized. (The machine is
stopped on detection of a trouble.)
3)
By displaying the trouble content, the trouble position can be
quickly identified. (This allows to perform an accurate repair,
improving the repair efficiency.)
4)
Preliminary warning of running out of consumable parts allows
to arrange for new parts in advance of running out. (This
avoids stopping of the machine due to running out the a con-
sumable part.)
C. Self diag message kinds
The self diag messages are classified as shown in the table below.
D. Self diag operation
The machine always monitors its own state.
When the machine recognizes a trouble, it stops the operation and
displays the trouble message.
A warning message is displayed when a consumable part life is
nearly expired or is expired.
When a warning message is displayed, the machine may be or
may not be stopped.
The trouble messages and the warning messages are displayed by
the LCD and lamp.
Some trouble messages are automatically cleared when the trou-
ble is repaired. Some other troubles must be cleared by a simula-
tion.
Some warning messages of consumable parts are automatically
cleared when the trouble is repaired. Some other warning mes-
sages must be cleared by a simulation.
Class 1
User
Warning of troubles which can be recovered by the 
user. (Paper jam, consumable part life expiration, 
etc.)
Service
Warning of troubles which can be recovered only by 
a serviceman. (Motor trouble, maintenance, etc.)
Others
-
Class 2
Warning
Warning to the user, not a machine trouble 
(Preliminary warning of life expiration of a 
consumable part, etc.)
Trouble
Warning of a machine trouble. The machine is 
stopped.
Others
-
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Πρήσ
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ZFT
OP
Monitors the machine
conditions.
Detects/analyzes
the content.
Trouble/Warning
Trouble/Warning
Repair
Troubleshoot the cause.
Standby state
The machine is stopped.
The content is displayed.
Warning
Warning
Trouble
No
YES
Trouble
Reset
Replace or supply
the consumable part.
Cancel the self-diagnostic
message with the 
diagnostic (test commands).
A consumable
part has reached
its lifetime
MX-7500N  TROUBLESHOOTING  7 – 2
E. Breakdown sequence
(1)
Error code and operatable mode
Trouble content
Judg-
ment 
block
Trouble code
Operatable mode
Copy scan 
(including 
interrup-
tion)
Scan 
(Push)
Scan 
(Pull)
Scan-
To 
HDD
Print
List 
print
FAX 
Send
FAX 
print
FAST 
Notifi-
cation 
to host
FAX board 
trouble
FAX board 
breakdown
MFP
F6 (00, 01, 04, 21, 
30, 97, 98)
1
1
1
HDD trouble
Compact flash 
memory breakdown
E7 (A6)
5
5
5
5
5
5
5
5
5
SD card breakdown
E7 (07)
5
5
5
5
5
5
5
5
5
HDD breakdown
E7 (03, A5)
5
5
5
5
5
5
5
5
5
HDD-ASIC 
breakdown
E7 (04)
5
5
5
5
5
5
5
5
5
Scanner 
communication 
trouble
SCU communication 
error
A0 (02)
E7 (80)
5
5
5
5
5
Engine 
communication 
trouble
PCU communication 
error
A0 (01)
E7 (90)
5
5
5
5
5
5
5
5
Option 
communication 
trouble
ACU communication 
error
A0 (04, 05)
5
5
5
5
5
5
5
5
Printer port 
system trouble
Printer port system 
trouble
F9 (91, 92)
5
5
5
*13
*14
Backup battery 
voltage fall 
trouble
Backup battery 
voltage fall
U1 (01)
5
5
5
5
5
5
5
5
Operation 
disable trouble 1
Controller fan motor 
trouble
L4 (28, 30)
5
5
5
5
5
5
5
5
5
Operation 
disable trouble 2
External 
communication 
disable (RIC)
U7 (50, 51)
5
5
5
5
5
5
5
5
Memory error 
(included not installed 
the expansion RAM)
U2 (00, 11, 40, 41, 
42)
5
5
5
5
5
5
5
5
15
Connection trouble 
(MFP detection)
A0 (10, 11, 14, 15, 
16, 17, 20)
E7 (60, 61, 89)
5
5
5
5
5
5
5
5
5
Serial number 
discrepancy
U2 (30)
5
5
5
5
5
5
5
5
5
HDD registration data 
check sum error
U2 (50)
5
5
5
5
5
5
5
5
Operation 
disable trouble 3
Memory check error 
when booting
E7 (95, 96)
5
5
5
5
5
5
5
5
Image memory 
trouble, decode error
E7 (01, 49, 91, 92, 
93, 94)
5
5
5
5
5
5
5
5
Image memory 
trouble, decode error 
(related to ACRE, 1)
E7 (42, 46, 48)
5
17
5
5
5
Operation 
disable trouble 4
Personal counter not-
installed trouble
PC (00)
5
5
5
5
5
5
5
5
Power controller 
trouble
Power controller 
trouble
L8 (20)
5
5
5
5
5
5
5
5
Special function 
trouble
Special function error
P1 (00, 01, 02)
U2 (60)
Laser trouble
LSU breakdown
PCU
E7 (20, 24, 28, 29, 
A0)
L6 (10)
5
5
5
5
5
5
*10
5
5
Engine trouble 1
Connection trouble 
(PCU detection)
A0 (21)
E7 (50, 55)
F1 (50)
5
5
5
5
5
5
5
5
5
MX-7500N  TROUBLESHOOTING  7 – 3
Engine trouble 2
PCU troubles (motor, 
fusing, etc.)
PCU
C1 (01, 10, 14)
C4 (00, 01, 20, 21, 
30, 31)
F2 (22, 40, 64, 70, 
74, 91)
H2 (00, 01, 02, 03, 
04, 05, 06, 07)
H3 (00, 01, 02)
H4 (00, 01, 02, 30, 
31, 32)
H5 (01)
H7 (10, 11)
L4 (02, 03, 06, 07, 
08, 16, 17, 18, 19, 
20, 24, 29, 31, 32, 
34, 35, 36, 39, 40, 
41, 42, 43, 44, 48, 
49, 57, 60, 61, 63)
L8 (01, 02, 11, 12)
U2 (90, 91)
5
5
5
5
5
5
*10
5
5
Color system 
trouble
General PCU color 
system breakdown
C1 (03, 05, 07)
E7 (21, 22, 23, 25, 
26, 27, A1, A2, A3)
F2 (23, 24, 25, 41, 
42, 43, 65, 66, 67, 
71, 72, 73, 75, 76, 
77, 92, 93, 94)
5
*19
5
*19
5
*19
5
*19
5
*19
5
*10
*19
5
*19
5
*19
Paper feed tray 
0 trouble
Paper feed tray 0 
breakdown
U6 (63, 68, 69)
3
3
3
*10
3
Paper feed tray 
1 trouble
Paper feed tray 1 
breakdown
F3 (12)
3
3
3
*10
3
Paper feed tray 
2 trouble
Paper feed tray 2 
breakdown
F3 (22)
3
3
3
*10
3
Paper feed tray 
3 trouble
Paper feed tray 3 
breakdown
F3 (32)
3
3
3
*10
3
Paper feed tray 
4 trouble
Paper feed tray 4 
breakdown
F3 (42)
3
3
3
*10
3
Paper feed tray 
5 trouble
Paper feed tray 5 
breakdown
U6 (09, 23, 24, 29)
UE (10, 11, 12, 13, 
14, 15, 16, 17)
3
3
3
*10
3
Paper feed tray 
6 trouble
Paper feed tray 6 
breakdown
U6 (33, 34, 39)
UE (20, 21, 22, 23, 
24, 25, 26, 27)
3
3
3
*10
3
Paper feed tray 
7 trouble
Paper feed tray 8 
breakdown
U6 (43, 44, 49)
UE (30, 31, 32, 33, 
34, 35, 36, 37)
3
3
3
*10
3
Paper feed tray 
8 trouble
Paper feed tray 8 
breakdown
U6 (73, 74, 79)
UE (40, 41, 42, 43, 
44, 45, 46, 47)
3
3
3
*10
3
Staple trouble
Staple breakdown
F1 (08, 10)
4
4
4
4
4
4
*10
4
4
Saddle stitch 
section trouble
Saddle stitch section 
breakdown
F1 (31, 41, 42, 43, 
44, 45, 46, 51)
4
4
4
4
4
4
*10
4
4
Finisher trouble
After-process 
breakdown
F0 (03, 08, 10, 11, 
14, 15, 18, 19, 20, 
23, 25, 28, 29, 30, 
31, 32, 33, 34, 37, 
40, 41, 42, 43, 44, 
45, 46, 47, 48, 49, 
51, 52, 53, 54, 55, 
56, 70, 71, 72, 73, 
74, 75, 76, 77, 80, 
81, 82, 83, 84, 86)
F1 (00, 03, 15, 19, 
20, 21, 22, 23, 30, 
32, 33, 34, 37, 38, 
52, 60, 90, 96, 97, 
98, 99)
4
4
4
4
4
4
*10
4
4
Inserter trouble
Inserter breakdown 
(except for 
communication 
trouble)
F1 (64, 65, 66, 67)
3
3
3
*10
3
Other troubles
Other troubles
EE (EC, EL, EU)
Process control 
trouble
Process control 
breakdown (PCU 
detection)
F2 (39, 49, 50, 51, 
52, 53, 58, 78, A0, 
A1, A2, A3)
*12
Trouble content
Judg-
ment 
block
Trouble code
Operatable mode
Copy scan 
(including 
interrup-
tion)
Scan 
(Push)
Scan 
(Pull)
Scan-
To 
HDD
Print
List 
print
FAX 
Send
FAX 
print
FAST 
Notifi-
cation 
to host
MX-7500N  TROUBLESHOOTING  7 – 4
Error where only history data are saved
5: Operation disabled
1: The operation is enabled in a line other than the trouble line.
3: When detected during other than a job, the operation is enabled with a tray other than the trouble tray.
4: When detected during other than a job, the operation is enabled in a section other than the trouble paper exit section. * However, it is valid
only when the escape tray setting has been made.
6: When detected during other than a job, the operation is enabled in the OC mode.
7: When detected in other than a job, the operation is enabled in the OC mode/single surface scan mode.
8: When detected in other than a job, the operation is enabled in other than the duplex color scan mode.
9: When detected during other than a job, the operation is enabled in the black and white mode.
*10: Since communication is enabled, reception can be transferred. (Noted in the list print category of the system setting screen operation
because it is an operation on the system setting screen.)
11: When detected during other than a job, the operation is enabled in other than the DESK and the LCC.
*12: Trouble display message is displayed in 2 lines. (Example: Ready to copy. F2 trouble)
*13: When FIERY (EFI) option is installed, PCL will not operate. (Machine specifications) (Exclusive)
*14: Only FIERY (EFI) option list print (self print) is disabled.
15: When in U2-22, trouble notification cannot be made. When in U2-23, if either of the FAX soft SW or the FAST data cannot be restored,
the data are initialized, disabling trouble notification.
17: Job execution enable only in a format other than high compression PDF.
*19: When the color mode is set to disable in the "Color mode disable setting" of the system setting, the operation is enabled in the black and
white mode.
Operation 
disable trouble
Connection trouble 
(SCU detection)
SCU
A0 (22)
5
5
5
5
5
5
5
5
5
Color system 
trouble (SCU 
detection)
SCU color system 
breakdown (SCU 
detection)
UC (02)
9
9
9
9
9
Color system 
trouble (DSPF 
detection)
SCU color system 
breakdown (DSPF 
detection)
UC (12)
8
8
8
8
8
Anti-copy 
trouble
Anti-copy system
UC (20)
5
5
5
5
5
Anti-copy 
trouble (DSPF 
detection)
Anti-copy system 
(DSPF detection)
UC (30)
7
7
7
7
7
Scanner trouble 
1
EEPROM system
U2 (80, 81)
5
5
5
5
5
Scanner trouble 
2
Scanner section 
breakdown (mirror 
motor, lens, copy 
lamp)
L1 (00)
L2 (11)
L3 (00)
U9(01)
5
5
5
5
5
CCD trouble
CCD breakdown 
(shading, etc.)
E7 (10, 11, 14)
5
5
5
5
5
DSPF/DF 
trouble
DSPF/DF breakdown
U5 (00, 16, 30, 31)
6
6
6
6
6
SPF back 
surface trouble
General troubles in 
the SPF back surface 
scanning section
E6 (10, 11, 14)
7
7
7
7
7
Trouble content
Judg-
ment 
block
Trouble code
Operatable mode
Copy scan 
(including 
interrup-
tion)
Scan 
(Push)
Scan 
(Pull)
Scan-
To 
HDD
Print
List 
print
FAX 
Send
FAX 
print
FAST 
Notifi-
cation 
to host
Error history
PCU
F2 (45)
MFP
E7 (02)
U2 (05)
Trouble content
Judg-
ment 
block
Trouble code
Operatable mode
Copy scan 
(including 
interrup-
tion)
Scan 
(Push)
Scan 
(Pull)
Scan-
To 
HDD
Print
List 
print
FAX 
Send
FAX 
print
FAST 
Notifi-
cation 
to host
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Here you can view online or download Sharp MX-6500N / MX-7500N (serv.man21) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sharp MX-6500N / MX-7500N (serv.man21) Copying Equipment. Information contained in Sharp MX-6500N / MX-7500N (serv.man21) service manual (repair manual) typically includes:

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  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).