Sharp FO 4400 - B/W Laser - All-in-One Service Manual Page 116
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FO-4400U
FO-CS1
( 2-4A)(12-5E)
( 2-4A)
( 1-3H)(11-3D)
( 1-2H)(11-3A)
( 4-3I)
( 2-4A)
( 1-1B)
( 1-2B)
( 4-3D)
( 1-3C)
( 1-2B)( 2-3A) ( 3-1A)( 7-3B)
( 8-4H)(11-5H)
( 1-2H)(11-3A)
( 1-3H)(11-3D)
( 1-3H)(11-3A)
( 1-3H)(11-3A)
( 1-3C)
( 1-3H)( 7-3B)(11-3D)
( 1-3H)( 2-2A)
(11-3D)
( 1-3H)( 7-3B)
(7-3B)(11-3A)
( 1-5H)( 2-2A)( 3-2A)( 5-4A)
( 7-4C)(11-6A)(12-4D)(12-2D)
( 5-4A)(12-3E)
( 2-4A)( 3-3A)
( 5-4A)(12-3I)( 2-4A)( 3-3A)
( 2-4A)(12-5E)
( 2-4A)
( 2-5A)(12-6E)
( 2-5A)(12-6E)
( 2-5A)
( 3-1E)
( 2-1E)
( 1-2H)
( 1-3H)( 2-3A)
( 3-1A)( 7-3B)(11-3A)
(12-3A)(12-1A)
(12-5A)(12-5I)
for 16bit-BUSfor 32bit-BUS
( 1-6H)( 2-1A)( 3-1A)( 5-4A)
( 7-5C)(11-6A)(12-2F)
A20
A19
A4
A10
A8
A8
A15
A4
A11
A1
A2
A6
A10
A6
A12
A0
A12
A11
A2
A9
A13
A5
A3
A2
A22
A4
A1
A3
A10
A14
A15
A14
A8
A18
A11
A13
A5
A15
A9
A3
A9
A13
A4
A3
A6
A7
A5
A12
A21
A7
A1
A13
A2
A5
A9
A8
A7
A16
A17
A10
A14
A14 A6
A11
A12
A7
D7
D7
D18
D13
D26
D1
D29
D6
D11
D0
D8
D28
D2
D6
D3
D3
D3
D15
D11
D5
D14
D4
D15
D7
D3
D22
D7 D14
D12
D2
D4 D19
D6
D30
D2
D9
D17
D1
D6
D1
D4
D27
D10
D4
D7
D0
D5
D31
D20
D2
D0
D0
D1
D10
D24
D23
D4
D13
D12
D1
D3
D21
D6
D16
D0
D8
D5
D2
D25
D5
D5
D9
DA12
DA7
DA2
DA8
DA0
DA7
DA10
DA5
DA11
DA5
DA6
DA4
DA3
DA2
DA13
DA13
DA1
DA3
DA1
DA11
DA9
DA0
DA8
DA12
DA4
DA6
DA9
DA10
A21
9
A20
10
A19
15
A18
16
A17
17
A16
48
A15
1
A14
2
DQ0
29
Vpp
13
CE
26
WE
11
OE
28
WP
14
RST
12
DQ9
32
DQ1
31
GND
46
GND
27
Vcc
37
Vccq
47
DQ8
30
DQ7
44
DQ6
42
DQ5
40
DQ14
43
DQ13
41
DQ12
39
DQ11
36
DQ10
34
A13
3
A12
4
A11
5
A10
6
A9
7
DQ4
38
A0
25
A3
22
DQ3
35
DQ2
33
A8
8
A7
18
A6
19
A5
20
DQ15
45
A1
24
A2
23
A4
21
A7
3
A8
25
A9
24
A10
21
A11
23
A12
2
A13
26
A14
1
DQ8
19
DQ7
18
DQ6
17
DQ5
16
DQ4
15
DQ3
13
DQ2
12
A6
4
A5
5
A4
6
A3
7
A2
8
A1
9
A0
10
OE
22
WE
27
CS
20
DQ1
11
VCC
28
GND
14
CLK
38
DQML
15
DQ0
2
DQ1
4
DQ2
5
DQ3
7
Vss
28
Vss
41
CS
19
A13
20
A0
23
A1
24
A2
25
A3
26
A4
29
A5
30
A6
31
A7
32
A8
33
A9
34
A10
22
CKE
37
WE
16
CAS
17
RAS
18
Vcc
1
Vcc
14
VccQ
3
VccQ
9
VccQ
43
VccQ
49
VssQ
52
VssQ
46
VssQ
12
VssQ
6
Vss
54
Vcc
27
DQMH
39
A11
35
A12
21
DQ4
8
DQ5
10
DQ6
11
DQ7
13
DQ8
42
DQ9
44
DQ10
45
DQ11
47
DQ12
48
DQ13
50
DQ14
51
DQ15
53
NC
36
NC
40
I/O8
44
I/O7
43
I/O6
42
I/O5
41
I/O4
32
I/O3
31
I/O2
30
I/O1
29
CLE
16
ALE
17
CE
9
WE
18
RE
8
WP
19
RY/BY
7
NC
26
GND
6
Vss
36
Vss
13
Vcc
12
Vcc
37
NC
27
NC
28
NC
33
NC
34
NC
21
NC
22
NC
23
NC
24
NC
25
NC
1
NC
2
NC
3
NC
4
NC
5
NC
35
NC
40
NC
47
NC
38
NC
39
NC
10
NC
11
NC
14
NC
15
NC
20
NC
45
NC
46
NC
48
I/O8
27
I/O7
26
I/O6
25
I/O5
24
I/O4
21
I/O3
20
I/O2
19
I/O1
18
CLE
2
ALE
3
CE
43
WE
4
RE
42
WP
5
RY/BY
41
NC
28
GND
40
Vss
22
Vss
1
Vcc
23
Vcc
44
NC
29
NC
30
NC
31
NC
32
NC
13
NC
14
NC
15
NC
16
NC
17
NC
6
NC
7
NC
8
NC
9
NC
10
NC
35
NC
36
NC
37
NC
38
NC
39
VCC
14
GND
7
3
2
1
6
5
4
CLK
38
DQML
15
DQ0
2
DQ1
4
DQ2
5
DQ3
7
Vss
28
Vss
41
CS
19
A13
20
A0
23
A1
24
A2
25
A3
26
A4
29
A5
30
A6
31
A7
32
A8
33
A9
34
A10
22
CKE
37
WE
16
CAS
17
RAS
18
Vcc
1
Vcc
14
VccQ
3
VccQ
9
VccQ
43
VccQ
49
VssQ
52
VssQ
46
VssQ
12
VssQ
6
Vss
54
Vcc
27
DQMH
39
A11
35
A12
21
DQ4
8
DQ5
10
DQ6
11
DQ7
13
DQ8
42
DQ9
44
DQ10
45
DQ11
47
DQ12
48
DQ13
50
DQ14
51
DQ15
53
NC
36
NC
40
G
D
S
8
9
10
11
12
13
BR9
R319 33
BR8
R263
IC12
FLASH MEMORY
LH28F320BFHE-PBTLZA
BR7
C7
0.1u/16V
R383
C255
R371
R384
N.M.
R362 0
R240 0
C283
C254
BR6
R391 0
R612
0
R309 33
C252
IC19
SRAM
BS62LV256SC-70
C296
1u
R385
R379
C176
0.1u
R363 0
R320 33
R316
R267 0
R310
C279
1u
R308
R389
R312
R382
IC25
SDRAM
MT48LC8M16A2TG-75/W986416DH-7
R395 0
BR24
33 x4
R370
N.M.
BR22
33 x4
R365 0
C280
1u
R305
R376
IC26
N.M.
R18
1K
C251
C301
N.M.
C227
N.M.
C297
1u
R33 33
IC27
TSOP
TC58V64BFT
R429 33
R373
C9
1000p/25V
R368 0
R396 0
C177
0.1u
C282
100p
C250
C226
0.1u
C295
1u
R377
R380
R317
R374
C298
1u
R367 0
C285
R314
C302
0.1u
C601
0.1u
C253
R307
R390
R375
R311
R17
100K
R394 0
IC20E
74LV126A
R241 N.M.
IC20A
74LV126A
R318 33
R386
C258
0.1u
R264
IC20B
74LV126A
C257
0.1u
IC18
BR23
33 x4
Q4
2SJ243
IC20C
74LV126A
R393 0
C249
R369 0
C256
IC20D
74LV126A
R388
C284
N.M.
R244
10K
R387
C8
0.1u/16V
R378
BR25
33 x4
R266 10K
R381
R366 0
R392 0
R315
R16
4.7K
R265
R364 0
R428 33
R372
R306
R397
2.2K
C281
1u
DG
DG
+3.3V
DG
DG
DG
+3.3V
DG
+3.3V
+3.3V
DG
+3.3V
DG
+3.3V
DG
DG
+3.3V
DG
+3.3V
VBAT
DG
DG
DG
DG
DG
VBAT
DG
/WE1
CLEO
/CASL
/CS3
/BUSYSTD
ALEO
/NANDWR
CKE
/DQMUL
/WP0
CKSDRU
/DQMUU
CKSDRL
/CS2
/RESET
/IOWR
D[31:0]
A[25:0]
/IORD
TCS1
TCS2
VPPON
DA[13:0]
RD/WR
/WE0
/RD
/PGMWP
DA[13:0]
/PGMCS
/NANDSTDCS
/NANDRD
/RASL
A
A
B
B
C
C
D
D
E
E
F
F
G
G
H
H
I
I
6 6
5 5
4 4
3 3
2 2
1 1
Memory block 4/12
6 – 7
- 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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