Sharp FO-6700 Service Manual Page 71
- Page / 192
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
Rated. / 5. Based on customer reviews
FO-6700U
FO-67DL
5 – 15
Pin name Pin No. Pin Description
VBB 1, 14 Output stage power-supply voltage
SENSE1 2 Set current detection pins.
SENSE2 13 Connect these pins, fed back through noise filters, to E1, and E2.
E1 3 Current control pins by connecting between this pin and GND.
E2 12
DGND 4,11 Internal diode anode connection
OUT1B 6
OUT1A 7 Output pins
OUT2B 8
OUT2A 9
GND 15 Ground
RC1 27 Used to set the output off time for the switched output signals.
RC2 16 The fixed off times are set by the capacitors and resistors connected to these pins. t off CR
Vref1 26 Output current settings
Vref2 17 The output current is determined by the voltage (in the range 1.5 to 7.5V) input to these pins.
PHASE1 25 Output phase switching inputs.
PHASE2 18 [H] input : OUT A = high, OUT B = low
[L] input : OUT A = low, OUT B = high
ENABLE1 24 Output on/off settings
ENABLE2 19 [H] input : output OFF
[L] input : output ON
I01, I11 22, 23 Digital inputs that set the output current
I02, I12 21, 20 The output currents can be set to 1/3, 2/3, or full by setting these pins to appropriate combinations of high and low levels.
VCC 28 Logic block power supply.
[Pin Functions]
(12) DPRAM I/F Block
The Main CPU communicates with the Sub CPU on the Line Control
PWB by the DPRAM.
This block functions for handshaking with the DPRAM.
- 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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