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FO 4400 - B/W Laser - All-in-One
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Sharp FO 4400 - B/W Laser - All-in-One Service Manual Page 135
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Table of contents
TROUBLESHOOTING
BOOKMARKS
Rated
.
/ 5. Based on
customer reviews
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FO-4400U
FO-CS1
Power Supply PWB parts layout
6
–
26
←
The
Power supply PWB
of this model
employs lead-free solder
.
1
2
...
130
131
132
133
134
135
136
137
138
139
140
...
189
190
SERVICE MANUAL
1
FACSIMILE
1
CONTENTS
2
[1] Specifications
4
[2] Life of consumable
4
[3] Operation panel
5
[4] Transmittable documents
6
[5] Installation
7
Attach a letter or
9
SPEED DIAL
14
CHAPTER 2. ADJUSTMENTS
15
MEMORY CLEAR ?
16
S W 0 1 = 0 0 0 0 0 0 0 0
17
Soft switch mode screen
17
PANEL CHECK MODE
18
ALL KEY OK !!
18
: Speed dial number
19
HHHHHHHHHHHHHHHHHHHH
20
• Blank paper aging mode
21
4. Soft switch description
24
• Soft switch
24
[3] Troubleshooting
49
[4] Error code table
50
2. Service call error massage
51
Super G3 mode
51
[1] Mechanical description
53
[2] Printer description
54
8. LASER EXPOSURE
57
9. DEVELOPMENT
57
9-1. Overview
57
Temperature (°C)
58
12. PRINT SEQUENCE
59
13. Timing chart
60
13-1. Print Starting
60
13-2. Print Ending
60
2 Rear cabinet
62
PWB plate, Right cabinet
63
4 PWB unit
64
Inner left cabinet unit
67
9 Power supply PWB
68
Scanner frame unit (1/2)
69
Scanner frame unit (2/2)
70
Document guide upper unit
71
Operation panel unit
71
13 Upper cover
72
Wire treatment
73
High voltage PWB unit (HV1)
74
Main motor (M1)
75
Fusing unit (1/2)
77
Heater Lamp
78
Voltage Mark
78
Paper cassette (FO-CS1)
79
Cassette case unit
80
Drive system unit (FO-CS1)
81
Cassette cabinet (FO-CS1)
82
Cassette case (1/2) (FO-CS1)
83
Cassette case (2/2) (FO-CS1)
84
(FO-45VS)
85
CHAPTER 4. DIAGRAMS
87
[1] Circuit description
91
FO-4400U
100
(3) Modem block
101
(2) Backup memory block
101
0 I1 Output Current
104
E) = IOUT
104
E) = IOUT x 2/3
104
E) = IOUT x 1/3
104
2. Waveforms
105
CPU block
110
MAIN CPU
111
HD6417706F133
111
Main ASIC block
112
IC5 SDRAM
113
MT48LC4M16A2TG-75/
113
W986416DH-7
113
Sub ASIC block
114
R284 10K
115
Memory block 4/12
116
Modem block 5/12
117
LCD controller block 7/12
119
Connector block 1 9/12
121
Connector block 2 10/12
122
Connector block 3 11/12
123
Connector block 4 12/12
124
[2] LIU PWB circuit 1/1
127
M38079EFFS_12MHZ
130
Printer PWB circuit 2/2
131
HEATER ON
134
HEATER-RELAY OFF
134
INTERLOCK
134
Power Supply PWB parts layout
135
Joint PWB
138
No. DESCRIPTION PARTS CODE
139
C LED PWB unit DCEKP425CXHI1
139
[1] G3 Protocol
144
[2] Super G3 Protocol
145
[3] Power On Sequence
146
CHAPTER 8. OTHERS
147
Fig. 5 Connected cable
149
FO-4400 PC
150
PARTS GUIDE
151
[5] Document guide upper unit
156
[4] Operation panel unit
156
[10] Drive/Transfer unit
162
PARTS CODE
163
DESCRIPTION
163
I n d e x
183
© 2002 BY SHARP CORPORATION
190
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