DOWNLOAD Sharp AR-EB7 (serv.man3) Service Manual ↓ Size: 18.96 KB | Pages: 1 in PDF or view online for FREE

Model
AR-EB7 (serv.man3)
Pages
1 Few pages! See other manuals at the bottom of the first or last page.
Size
18.96 KB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / Electrical section
File
ar-eb7-sm3.pdf
Date

Sharp AR-EB7 (serv.man3) Service Manual ▷ View online

AR-EB7
ELECTRICAL SECTION
– 6 –
[4] ELECTRICAL SECTION
The OA982 board mounted on the IMC2 board inputs and outputs image data to and from the MCU board, controls SDRAM memory, and communi-
cates with USB2.0 devices.
SDRAM memory is used to store programs and image data as well as for a working area.
USB 2.0 devices communicate with a PC through a USB2.0 cable at a rate of 480 Mbps.
SDRAM memory can be expanded by using 1BANK SDRAM DIMM (AR-SM5).
Communications between the OA982 and the AR-SM5 is held using an ASIC-controlled BUFFER IC (74VCX16244/16245).
1. Block diagram
2. Pin arrangement
The table below shows connector pin arrangement between the MCU to IMC2 PWB.
•  IMC2 side
Interface-1 CN2 (22FE-BT-VK-N)
Interface-2 CN3 (22FE-BT-VK-N)
IC1
OA982
IC35
BUFFER
ASIC
IC3
256Mbit SDRAM
IC4
256Mbit SDRAM
IC2
8Mbit
FlashROM
IC26 BUFFER
74VCX16245
IC28 BUFFER
74VCX16244
IC29 BUFFER
74VCX16244
IC6
ZeroDelayBuffer
CY2305
CN6  168PIN DIMM SOCKET
(For 1BANK SNR SDRAM DIMM)
X1  XTAL
20.3094MHz
IC8
USB2.0Driver
ISP1581
Y1  XTAL
12.0000MHz
CN2 22pinFFC (T
o MCU)
CN3 22pinFFC (T
o MCU)
USB2.0
Connector
ADDRESS BUS
DATA BUS
CONTROL SIGNAL (/CS,/RAS,/CAS,/WE etc.)
3.3V
Peripheral
BUS(DMA)
8bit ADBUS
USB2.0
High/Full
Speed
Pixel Input BUS (8bit DMA)
Pixel Output BUS (8bit DMA)
SDRAM CLK 81.2376MHz
/OE,/DIR
SDRAM CLK
81.2376MHz
DATA BUS
CONTROL BUS
ADDRESS BUS
Pin 
No.
Signal 
name
Processing of 
connection
Pattern = “direct”
Pin 
No.
Signal 
name
Processing of 
connection
Pattern = “direct”
1
DGND
(MCU 
3
 IMC)
12
PI_DATA2 MCU 
3
 IMC
2
ESCMD
IMC 
3
 MCU
13
PI_DATA1 MCU 
3
 IMC
3
/ESCRDY
MCU 
3
 IMC
14
PI_DATA0 MCU 
3
 IMC
4
PI_WR
MCU 
3
 IMC
15
/HSYNC
MCU 
3
 IMC
5
PI_ACK
MCU 
3
 IMC
16
/ESPAGE
IMC 
3
 MCU
6
PI_REQ
IMC 
3
 MCU
17
/PRLINE
MCU 
3
 IMC
7
PI_DATA7 MCU 
3
 IMC
18
/RESET
MCU 
3
 IMC
8
PI_DATA6 MCU 
3
 IMC
19
3.3V
(MCU 
3
 IMC)
9
PI_DATA5 MCU 
3
 IMC
20
3.3V
(MCU 
3
 IMC)
10
PI_DATA4 MCU 
3
 IMC
21
DGND
(MCU 
3
 IMC)
11
PI_DATA3 MCU 
3
 IMC
22
DGND
(MCU 
3
 IMC)
Pin 
No.
Signal 
name
Processing of 
connection
Pattern = “direct”
Pin 
No.
Signal 
name
Processing of 
connection
Pattern = “direct”
1
DGND
(MCU 
3
 IMC)
12
PO_DATA2 IMC 
3
 MCU
2
ESSTS
MCU 
3
 IMC
13
PO_DATA1 IMC 
3
 MCU
3
/ESSRDY
IMC 
3
 MCU
14
PO_DATA0 IMC 
3
 MCU
4
(PO_CS)
NOT USE
15
/READY
MCU 
3
 IMC
5
PO_ACK
IMC 
3
 MCU
16
/SCLINE
MCU 
3
 IMC
6
PO_REQ
MCU 
3
 IMC
17
/ESDET
IMC (GND) 
3
 MCU
7
PO_DATA7 IMC 
3
 MCU
18
5V
(MCU 
3
 IMC)
8
PO_DATA6 IMC 
3
 MCU
19
3.3V
(MCU 
3
 IMC)
9
PO_DATA5 IMC 
3
 MCU
20
3.3V
(MCU 
3
 IMC)
10
PO_DATA4 IMC 
3
 MCU
21
DGND
(MCU 
3
 IMC)
11
PO_DATA3 IMC 
3
 MCU
22
DGND
(MCU 
3
 IMC)
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Sharp AR-EB7 (serv.man3) Service Manual ▷ Download

  • DOWNLOAD Sharp AR-EB7 (serv.man3) Service Manual ↓ Size: 18.96 KB | Pages: 1 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sharp AR-EB7 (serv.man3) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp AR-EB7 (serv.man3) Copying Equipment. Information contained in Sharp AR-EB7 (serv.man3) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.