MX-6201N, MX-7001N (serv.man20). SELF DIAGNOSIS TROUBLE CODES SECTION - Sharp Copying Equipment Service Manual (repair manual). Page 6

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MX-7001N  SELF DIAG AND TROUBLE CODE  8 – 6
F2
49
LSU thermistor trouble
PCU
50
K phase sensor sensing trouble
PCU
51
CL phase sensor sensing trouble (C)
PCU
52
CL phase sensor sensing trouble (M)
PCU
53
CL phase sensor sensing trouble (Y)
PCU
58
Process humidity sensor trouble
PCU
64
Toner supply abnormality (K)
PCU
65
Toner supply abnormality (C)
PCU
66
Toner supply abnormality (M)
PCU
67
Toner supply abnormality (Y)
PCU
70
Toner cartridge improper (K)
PCU
71
Toner cartridge improper (C)
PCU
72
Toner cartridge improper (M)
PCU
73
Toner cartridge improper (Y)
PCU
74
Toner cartridge CRUM error (K)
PCU
75
Toner cartridge CRUM error (C)
PCU
76
Toner cartridge CRUM error (M)
PCU
77
Toner cartridge CRUM error (Y)
PCU
78
Registration exclusive image density sensor trouble 
(Transfer belt surface reflection ratio abnormality)
PCU
80
Half tone process control 1st patch reference value trouble 
(K)
MFP
81
Half tone process control 1st patch reference value trouble 
(C)
MFP
82
Half tone process control 1st patch reference value trouble 
(M)
MFP
83
Half tone process control 1st patch reference value trouble 
(Y)
MFP
84
Half tone process control 2nd patch reference value trouble 
(K)
MFP
85
Half tone process control 2nd patch reference value trouble  
(C)
MFP
86
Half tone process control 2nd patch reference value trouble 
(M)
MFP
87
Half tone process control 2nd patch reference value trouble 
(Y)
MFP
92
High-density process control density correction error (C)
PCU
93
High-density process control density correction error (M)
PCU
94
High-density process control density correction error (Y)
PCU
F3
12
Tray 1 lift-up trouble
PCU
22
Tray 2 lift-up trouble
PCU
32
Tray 3 lift-up trouble
PCU
42
Tray 4 lift-up trouble
PCU
F6
00
Communication trouble between the MFP and the FAX
Refer to FAX manual for details
01
FAX board EEPROM read/write error
04
FAX MODEM operation trouble
21
Combination error between the TEL/LIU PWB and the FAX 
soft switch
30
Access error to power controller on the FAX board (FAX 
detection)
97
FAX PWB incompatibility trouble
98
Combination error between the FAX-BOX PWB destination 
information and the machine destination information.
F9
00
Communication trouble between the controller and the 
printer controller (FIERY option)
MFP
H2
00
Detection thermistor open (TH1_AD2) of the non-contact 
thermistor
PCU
01
Lower thermistor open (TH_LM)
PCU
02
Sub thermistor open (TH_US)
PCU
03
Non-contact thermistor compensation thermistor open 
(TH1_AD1)
PCU
04
External heating thermistor open (TH_EX1)
PCU
05
Fusing external heating thermistor open (TH_EX2)
PCU
H3
00
Fusing section high temperature trouble (TH_UM)
PCU
01
Fusing section high temperature trouble (TH_LM)
PCU
02
Sub thermistor fusing section high temperature trouble 
(TH_US)
PCU
04
External heating thermistor high temperature trouble 
(TH_EX1)
PCU
05
Fusing external thermistor high temperature trouble 
(TH_EX2)
PCU
Trouble code
Trouble code content
Remarks
Trouble 
detection
Mechanism
Option
Electricity
FAX
Supply
Main 
code
Sub 
code
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