Sharp FO-6700 Service Manual Page 94
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- Table of contents
- TROUBLESHOOTING
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FO-6700U
FO-67DL
A
A
B
B
C
C
D
D
E
E
F
F
G
G
H
H
6 6
5 5
4 4
3 3
2 2
1 1
R324
R238
R237
N.M.
R239
TP179
IC29D
74HC08
12
14
13
11
C192
N.M.
TP180
IC19
VCC
20
A1
2
A2
3
A3
4
A4
5
A5
6
A6
7
A7
8
A8
9
B1
18
B2
17
B3
16
B4
15
B5
14
B6
13
B7
12
B8
11
DIR
1
OE
19
IC18
VCC
20
A1
2
A2
3
A3
4
A4
5
A5
6
A6
7
A7
8
A8
9
B1
18
B2
17
B3
16
B4
15
B5
14
B6
13
B7
12
B8
11
DIR
1
OE
19
IC16
2Y4
3
2Y3
5
2Y2
7
2Y1
9
1Y4
12
1Y3
14
1Y2
16
1Y1
18
2A4
17
2A3
15
2A2
13
2A1
11
1A4
8
1A3
6
1A2
4
1A1
2
VCC
GND
10
2OE
19
1OE
1
IC17
2Y4
3
2Y3
5
2Y2
7
2Y1
9
1Y4
12
1Y3
14
1Y2
16
1Y1
18
2A4
17
2A3
15
2A2
13
2A1
11
1A4
8
1A3
6
1A2
4
1A1
2
VCC
20
2OE
19
1OE
1
C264
0.1
RA3
RA6
N.M.(SHORT)
RA4
N.M.(SHORT)
N.M.(SHORT)
N.M.(SHORT)
N.M.(SHORT)
N.M.(SHORT)
RA5
C188
N.M.
IC28C
74ALS32
9
14
10
7
8
IC28D
74ALS32
12
14
13
7
11
C191
N.M.
IC28B
74ALS32
4
14
5
7
6
RA7
RA8
N.M.(SHORT)
C190
N.M.
R323
N.M.
MD14
MD2
MD6
MD7
MD0
MD3
MD11
MD4
MD1
MD5
DPA2
DPA1
MA4
MA1
MA8
MA5
MA2
MA7
MA9
MA6
MA10
MA3
MD8
MD9
MD10
MD12
MD13
MD15
DPD6
DPD4
DPD12
DPD15
DPD13
DPD9
DPD8
DPD2
DPD11
DPD7
DPD14
DPD3
DPD10
DPD0
DPD5
DPD1
DPA7
DPA8
DPA9
DPA10
DPA3
DPA4
DPA5
DPA6
+5V
DG
DG
DG
+5V
+5V
+5V
DG
+5V
DG
+5V
DG
+5V
DG
+5V
+5V
MA[21:1](1-6H)
/MRD
(1-2E)
DPA[10:1] (16-6A)
/DPRD (16-3D/3H)
MD[15:0](1-6H,2-6E,3-6A,4-6D,5-4C,7-5A,8-6A,14-4A)
DPD[15:0] (16-6A)
/MDPCS1(5-4F)
/MDPCS2(5-4F)
/MRD
(1-2E)
(SHORT)
7
GND
10
GND
10
GND
10
DPRAM’S bus driver circuit 13/16
6 – 13
- SERVICE MANUAL 1
- FACSIMILE 1
- CONTENTS 3
- [1] Specifications 4
- 28 29 30 31 32 33 5
- 40393837363534 5
- CHAPTER 2. ADJUSTMENTS 9
- MEMORY CLEAR ? 10
- 1) Soft switch mode 11
- 2) Print area 11
- 3) ROM & RAM check 11
- After setup of the document 12
- Only the sensor which is 12
- SPEED key SXXX XXX 13
- : Speed key number 13
- 2-2. Print diagnosis 15
- • Blank paper aging mode 15
- • SW1 to SW30 : For line 1 17
- • SW31 to SW60 : For line 2 17
- 4. Soft switch description 18
- • Soft switch 18
- [3] Troubleshooting 44
- [4] Error code table 45
- Super G3 mode 46
- 2. Service call error massage 46
- Wire treatment 52
- [1] Block diagram 53
- [2] Wiring diagram 54
- [1] Circuit description 57
- (8) Gate Array (B) Block 64
- (9) CODEC Block 66
- (10) Page Memory Block 69
- (11) Driver Block 70
- (12) DPRAM I/F Block 71
- 1. General description 72
- (1) Sub CPU Block 72
- (2) Modem Block 75
- (8) JBIG Block 80
- IC3: VHiM65761FP-1(M65761FP) 80
- CPU & memory block 82
- Flash memory block 3/16 84
- Reading block 4/16 85
- Gate array (B) block 7/16 88
- Codec block 8/16 89
- Page memory block 9/16 90
- Other block 14/16 95
- Connector block 1 15/16 96
- FO-6700U 100
- Modem block 2/7 101
- Gate array block 3/7 102
- QM-coder block 4/7 103
- Dual port RAM block 5/7 104
- Access control block 6/7 105
- Connector block 7/7 106
- LIU PWB parts layout 109
- Printer PWB circuit 2/2 111
- T1 7 8 – 9 114
- T1 2 – 3 114
- Power Supply PWB parts layout 115
- High Voltage PWB parts layout 119
- Toner Empty PWB parts layout 120
- Memory PWB circuit 2/3 126
- Memory PWB circuit 3/3 127
- [1] G3 Protocol 129
- [2] Super G3 Protocol 130
- [3] Power On Sequence 131
- CHAPTER 8. OTHERS 132
- 2. Description 133
- For inspection 135
- [2] IC Signal Names 137
- 8 7 5 8 B 138
- PRINTER PWB UNIT 139
- 16 15 14 13 12 11 10 9 142
- 1 2 3 4 5 6 7 8 142
- 1C 2C 3C 4C 5C 6C 7C COM 142
- 1B 2B 3B 4B 5B 6B 7B E 142
- PARTS GUIDE 143
- [12] 2nd.Cassette (1) 158
- I n d e x 184
- © 2000 BY SHARP CORPORATION 192
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