Sharp AR-168N Specifications Page 127
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AR-168N/168L ELECTRICAL SECTION 13 - 7
(4) Reset circuit
This circuit detects ON/OFF of the power source, and controls start/
stop of each circuit. The voltage of 3.3V in the MCU PWB is detected
by the reset IC to generate the reset signal.
When the power voltage reaches the specified level, each circuit is
operated, but stopped before the power voltage falls below the speci-
fied level in order to protect against malfunction of the circuit. The
CPU/Flash ROM is reset by the power reset circuit, and system reset
of ASIC, OA982, FAX, and NIC is generated from the CPU (general-
purpose port output).
254 ram_data6 IN/OUT SDRAM SDRAM (Image
process page
memory) data bus
255 ram_data5 IN/OUT SDRAM SDRAM (Image
process page
memory) data bus
256 ram_data4 IN/OUT SDRAM SDRAM (Image
process page
memory) data bus
257 GND_core Power
258 ram_data3 IN/OUT SDRAM SDRAM (Image
process page
memory) data bus
259 ram_data2 IN/OUT SDRAM SDRAM (Image
process page
memory) data bus
260 ram_data1 IN/OUT SDRAM SDRAM (Image
process page
memory) data bus
261 ram_data0 IN/OUT SDRAM SDRAM (Image
process page
memory) data bus
262 GND_AC Power
263 ram_data15 IN/OUT SDRAM SDRAM (Image
process page
memory) data bus
264 ram_data14 IN/OUT SDRAM SDRAM (Image
process page
memory) data bus
265 VCC_AC Power
266 ram_data13 IN/OUT SDRAM SDRAM (Image
process page
memory) data bus
267 ram_data12 IN/OUT SDRAM SDRAM (Image
process page
memory) data bus
268 ram_data11 IN/OUT SDRAM SDRAM (Image
process page
memory) data bus
269 ram_data10 IN/OUT SDRAM SDRAM (Image
process page
memory) data bus
270 ram_data9 IN/OUT SDRAM SDRAM (Image
process page
memory) data bus
271 ram_data8 IN/OUT SDRAM SDRAM (Image
process page
memory) data bus
272 VCC_core Power
273 ram_dqm1 OUT SDRAM SDRAM (Image
process page
memory) DQM signal
274 ram_cke OUT SDRAM SDRAM (Image
process page
memory) CKE signal
275 GND_AC Power
276 ram_clk_out SDRAM SDRAM's clock
277 GND_core Power
278 ram_mad12 OUT SDRAM SDRAM (Image
process page
memory) address bus
279 ram_mad11 OUT SDRAM SDRAM (Image
process page
memory) address bus
280 ram_mad9 OUT SDRAM SDRAM (Image
process page
memory) address bus
PIN
No.
Signal Name IN/OUT Connected to Description
281 VCC_core Power
282 ram_mad8 OUT SDRAM SDRAM (Image
process page
memory) address bus
283 ram_mad7 OUT SDRAM SDRAM (Image
process page
memory) address bus
284 VCC_AC Power
285 ram_mad6 OUT SDRAM SDRAM (Image
process page
memory) address bus
286 ram_mad5 OUT SDRAM SDRAM (Image
process page
memory) address bus
287 ram_mad4 OUT SDRAM SDRAM (Image
process page
memory) address bus
288 GND_AC Power
289 cpudata15 IN/OUT CPU CPU data bus
290 cpudata14 IN/OUT CPU CPU data bus
291 cpudata13 IN/OUT CPU CPU data bus
292 cpudata12 IN/OUT CPU CPU data bus
293 cpudata11 IN/OUT CPU CPU data bus
294 cpudata10 IN/OUT CPU CPU data bus
295 cpudata9 IN/OUT CPU CPU data bus
296 cpudata8 IN/OUT CPU CPU data bus
PIN
No.
Signal Name IN/OUT Connected to Description
R18
11kF
21
C22
0.1u
12
C23
OPEN
12
R20
10kF
21
IC4
M51957BFP
NC
8
GND
4
VCC
7
NC
1
IN
2
NC
3
Cd
5
OUT
6
R19
3.3kJ
21
VCC3 VCC3
/RESET0 (2-C4)
Reset IC
13_ELECT.fm 7 ページ ２００５年１１月１８日 金曜日 午後５時４０分
- DIGITAL MULTIFUNCTIONAL 1
- CAUTION 2
- CONTENTS 4
- [1] GENERAL 6
- [2] SPECIFICATIONS 7
- 3. Copy performance 8
- 4. SPLC printer 9
- 5. Scan function 9
- [3] CONSUMABLE PARTS 10
- 4. TD cartridge replacement 11
- 1. Appearance 12
- 2. Internal 12
- 18 19 20 21 13
- 4. Motors and solenoids 14
- 5. Sensors and switches 15
- 6. PWB unit 16
- 7. Cross sectional view 17
- 1. Copier installation 18
- 2. Cautions on handling 18
- Lock Unlock 19
- Grasp here and turn in 19
- CAUTION tape 19
- Protective pins 19
- Pressure plate lock 21
- [Custom installation] 23
- (1) Windows XP (USB/Parallel) 23
- (2) Windows 98/Me/2000 (USB) 24
- C. Setting up button manager 27
- (1) Windows XP 27
- (2) Windows 98/Me/2000 27
- (1) Connecting a USB cable 28
- 11. Interface 29
- 12. Moving 29
- [6] COPY PROCESS 30
- 2. Outline of print process 31
- 3. Actual print process 31
- About DC 5.2kV 32
- Process controlling 33
- [7] OPERATIONAL DESCRIPTIONS 34
- 34 6 285 35
- 3. Laser unit 36
- 4. Fuser section 36
- (1) Heat roller 37
- (2) Separator pawl 37
- (3) Thermal control 37
- (4) Fusing resistor 37
- A. Initial state 41
- B. Front copy 41
- C. Back copy 41
- 8. Shifter 42
- [8] DISASSEMBLY AND ASSEMBLY 43
- Example of NG 44
- Charger wire 46
- Protrusion 46
- 3. Optical section 47
- CCD core 48
- 4. Fusing section 49
- Heat roller disassembly 50
- Heater lamp 50
- C. Assembly procedure 56
- Back Wire treatment 57
- 7. Rear frame section 59
- 8. Power section 60
- 9. Duplex motor section 60
- (1) Remove the rear cabinet 61
- (2) Remove the RSPF 61
- F. Sensor PWB 62
- G. Pickup solenoid 62
- H. Clutch 62
- (1) Remove the clutch unit 62
- (2) Remove the clutch 63
- (1) Remove the pickup unit 63
- (1) Remove the parts 65
- (2) Remove the parts 66
- T. Solenoid 67
- (1) Remove the reverse gate 67
- (2) Remove the solenoid 67
- [9] ADJUSTMENTS 68
- B. Image position adjustment 69
- (1) Lead edge adjustment 69
- B4 or 8 1/2″ × 14″ paper 70
- A4 size rear edge 70
- Scale image 70
- Paper rear edge 70
- White paper 71
- Test chart 71
- 3. High voltage adjustment 72
- 4. Duplex adjustment 72
- Document guide 73
- The trailing edge has a scale 73
- Table glass 73
- Scale (D-D mode) 73
- 6cm or more is required 74
- 2. Key rule 76
- 3. List of test commands 76
- Image loss, R = 4mm 101
- Chart back surface 105
- 5. Trouble codes 114
- [11] MAINTENANCE 117
- [12] USER PROGRAM 118
- B. Print mode 119
- [13] ELECTRICAL SECTION 121
- 2. Circuit descriptions 122
- (4) Reset circuit 127
- ASIC/CPU 128
- Tonner Motor Driver 129
- TD62064AF 130
- (10) OPE PWB 131
- (11) Carriage Unit 131
- (1) Noise filter circuit 131
- Voltage waveform 132
- [14]CIRCUIT DIAGRAM 134
- Serial EE-PROM 135
- MCU PWB (ASIC section) 136
- MCU PWB (Memory section) 138
- MCU PWB (Driver section 1) 140
- MCU PWB (Driver section 2) 142
- MCU PWB (Driver section 3) 144
- MCU PWB (IMC2 section 1/2) 148
- MCU PWB (Connector section 1) 152
- To Operational PWB 153
- To Mirror motor 153
- MCU PWB (Connector section 3) 154
- To 2nd. cassette 155
- MCU PWB (Modem I/F Connector) 157
- MCU PWB (Scanner I/F section) 158
- 2. OPERATION PWB 159
- To MCU PWB 161
- To Drum Initial Detector 161
- To FAX Key PWB 161
- POWER SUPPLY (120V/127V) 162
- (1) MCU SECTION (1/3) 164
- [15] FIRMWARE DOWNLOAD 167
- PROCEDURES 167
- 5. Installing procedures 171
- LEAD-FREE SOLDER 175
- CAUTION FOR BATTERY DISPOSAL 176
- COPYRIGHT 177
- 2005 BY SHARP CORPORATION 177
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