Sharp MX-6500N / MX-7500N (serv.man21) Service Manual ▷ View 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.
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.)
trouble.)
2)
The damage to the machine is minimized. (The machine is
stopped on detection of a trouble.)
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.)
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.)
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.
displays the trouble message.
A warning message is displayed when a consumable part life is
nearly expired or is expired.
nearly expired or is expired.
When a warning message is displayed, the machine may be or
may not be stopped.
may not be stopped.
The trouble messages and the warning messages are displayed by
the LCD and lamp.
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.
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.
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.)
user. (Paper jam, consumable part life expiration,
etc.)
Service
Warning of troubles which can be recovered only by
a serviceman. (Motor trouble, maintenance, etc.)
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.)
(Preliminary warning of life expiration of a
consumable part, etc.)
Trouble
Warning of a machine trouble. The machine is
stopped.
stopped.
Others
-
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໘ܦ
ඤယͬນা
Πρήσ
Πρήσ
࠙࣬
࠙࣬
ZFT
OP
Monitors the machine
conditions.
conditions.
Detects/analyzes
the content.
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.
the consumable part.
Cancel the self-diagnostic
message with the
diagnostic (test commands).
message with the
diagnostic (test commands).
A consumable
part has reached
its lifetime
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
cation
to host
FAX board
trouble
trouble
FAX board
breakdown
breakdown
MFP
F6 (00, 01, 04, 21,
30, 97, 98)
30, 97, 98)
1
1
1
HDD trouble
Compact flash
memory breakdown
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
breakdown
E7 (04)
5
5
5
5
5
5
5
5
5
Scanner
communication
trouble
communication
trouble
SCU communication
error
error
A0 (02)
E7 (80)
E7 (80)
5
5
5
5
5
Engine
communication
trouble
communication
trouble
PCU communication
error
error
A0 (01)
E7 (90)
E7 (90)
5
5
5
5
5
5
5
5
Option
communication
trouble
communication
trouble
ACU communication
error
error
A0 (04, 05)
5
5
5
5
5
5
5
5
Printer port
system trouble
system trouble
Printer port system
trouble
trouble
F9 (91, 92)
5
5
5
*13
*14
Backup battery
voltage fall
trouble
voltage fall
trouble
Backup battery
voltage fall
voltage fall
U1 (01)
5
5
5
5
5
5
5
5
Operation
disable trouble 1
disable trouble 1
Controller fan motor
trouble
trouble
L4 (28, 30)
5
5
5
5
5
5
5
5
5
Operation
disable trouble 2
disable trouble 2
External
communication
disable (RIC)
communication
disable (RIC)
U7 (50, 51)
5
5
5
5
5
5
5
5
Memory error
(included not installed
the expansion RAM)
(included not installed
the expansion RAM)
U2 (00, 11, 40, 41,
42)
42)
5
5
5
5
5
5
5
5
15
Connection trouble
(MFP detection)
(MFP detection)
A0 (10, 11, 14, 15,
16, 17, 20)
E7 (60, 61, 89)
16, 17, 20)
E7 (60, 61, 89)
5
5
5
5
5
5
5
5
5
Serial number
discrepancy
discrepancy
U2 (30)
5
5
5
5
5
5
5
5
5
HDD registration data
check sum error
check sum error
U2 (50)
5
5
5
5
5
5
5
5
Operation
disable trouble 3
disable trouble 3
Memory check error
when booting
when booting
E7 (95, 96)
5
5
5
5
5
5
5
5
Image memory
trouble, decode error
trouble, decode error
E7 (01, 49, 91, 92,
93, 94)
93, 94)
5
5
5
5
5
5
5
5
Image memory
trouble, decode error
(related to ACRE, 1)
trouble, decode error
(related to ACRE, 1)
E7 (42, 46, 48)
5
17
5
5
5
Operation
disable trouble 4
disable trouble 4
Personal counter not-
installed trouble
installed trouble
PC (00)
5
5
5
5
5
5
5
5
Power controller
trouble
trouble
Power controller
trouble
trouble
L8 (20)
5
5
5
5
5
5
5
5
Special function
trouble
trouble
Special function error
P1 (00, 01, 02)
U2 (60)
U2 (60)
Laser trouble
LSU breakdown
PCU
E7 (20, 24, 28, 29,
A0)
L6 (10)
A0)
L6 (10)
5
5
5
5
5
5
*10
5
5
Engine trouble 1
Connection trouble
(PCU detection)
(PCU detection)
A0 (21)
E7 (50, 55)
F1 (50)
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.)
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)
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
trouble
General PCU color
system breakdown
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)
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
*19
5
*19
5
*19
Paper feed tray
0 trouble
0 trouble
Paper feed tray 0
breakdown
breakdown
U6 (63, 68, 69)
3
3
3
*10
*10
3
Paper feed tray
1 trouble
1 trouble
Paper feed tray 1
breakdown
breakdown
F3 (12)
3
3
3
*10
*10
3
Paper feed tray
2 trouble
2 trouble
Paper feed tray 2
breakdown
breakdown
F3 (22)
3
3
3
*10
*10
3
Paper feed tray
3 trouble
3 trouble
Paper feed tray 3
breakdown
breakdown
F3 (32)
3
3
3
*10
*10
3
Paper feed tray
4 trouble
4 trouble
Paper feed tray 4
breakdown
breakdown
F3 (42)
3
3
3
*10
*10
3
Paper feed tray
5 trouble
5 trouble
Paper feed tray 5
breakdown
breakdown
U6 (09, 23, 24, 29)
UE (10, 11, 12, 13,
14, 15, 16, 17)
UE (10, 11, 12, 13,
14, 15, 16, 17)
3
3
3
*10
*10
3
Paper feed tray
6 trouble
6 trouble
Paper feed tray 6
breakdown
breakdown
U6 (33, 34, 39)
UE (20, 21, 22, 23,
24, 25, 26, 27)
UE (20, 21, 22, 23,
24, 25, 26, 27)
3
3
3
*10
*10
3
Paper feed tray
7 trouble
7 trouble
Paper feed tray 8
breakdown
breakdown
U6 (43, 44, 49)
UE (30, 31, 32, 33,
34, 35, 36, 37)
UE (30, 31, 32, 33,
34, 35, 36, 37)
3
3
3
*10
*10
3
Paper feed tray
8 trouble
8 trouble
Paper feed tray 8
breakdown
breakdown
U6 (73, 74, 79)
UE (40, 41, 42, 43,
44, 45, 46, 47)
UE (40, 41, 42, 43,
44, 45, 46, 47)
3
3
3
*10
*10
3
Staple trouble
Staple breakdown
F1 (08, 10)
4
4
4
4
4
4
*10
*10
4
4
Saddle stitch
section trouble
section trouble
Saddle stitch section
breakdown
breakdown
F1 (31, 41, 42, 43,
44, 45, 46, 51)
44, 45, 46, 51)
4
4
4
4
4
4
*10
*10
4
4
Finisher trouble
After-process
breakdown
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)
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
*10
4
4
Inserter trouble
Inserter breakdown
(except for
communication
trouble)
(except for
communication
trouble)
F1 (64, 65, 66, 67)
3
3
3
*10
*10
3
Other troubles
Other troubles
EE (EC, EL, EU)
Process control
trouble
trouble
Process control
breakdown (PCU
detection)
breakdown (PCU
detection)
F2 (39, 49, 50, 51,
52, 53, 58, 78, A0,
A1, A2, A3)
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
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.
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.
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.
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.
white mode.
Operation
disable trouble
disable trouble
Connection trouble
(SCU detection)
(SCU detection)
SCU
A0 (22)
5
5
5
5
5
5
5
5
5
Color system
trouble (SCU
detection)
trouble (SCU
detection)
SCU color system
breakdown (SCU
detection)
breakdown (SCU
detection)
UC (02)
9
9
9
9
9
Color system
trouble (DSPF
detection)
trouble (DSPF
detection)
SCU color system
breakdown (DSPF
detection)
breakdown (DSPF
detection)
UC (12)
8
8
8
8
8
Anti-copy
trouble
trouble
Anti-copy system
UC (20)
5
5
5
5
5
Anti-copy
trouble (DSPF
detection)
trouble (DSPF
detection)
Anti-copy system
(DSPF detection)
(DSPF detection)
UC (30)
7
7
7
7
7
Scanner trouble
1
1
EEPROM system
U2 (80, 81)
5
5
5
5
5
Scanner trouble
2
2
Scanner section
breakdown (mirror
motor, lens, copy
lamp)
breakdown (mirror
motor, lens, copy
lamp)
L1 (00)
L2 (11)
L3 (00)
U9(01)
L2 (11)
L3 (00)
U9(01)
5
5
5
5
5
CCD trouble
CCD breakdown
(shading, etc.)
(shading, etc.)
E7 (10, 11, 14)
5
5
5
5
5
DSPF/DF
trouble
trouble
DSPF/DF breakdown
U5 (00, 16, 30, 31)
6
6
6
6
6
SPF back
surface trouble
surface trouble
General troubles in
the SPF back surface
scanning section
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
cation
to host
Error history
PCU
F2 (45)
MFP
E7 (02)
U2 (05)
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
cation
to host