Read Sharp AR-M165-207 (serv.man17) Service Manual online
AR-M207 M165 M162 ELECTRICAL SECTION 13-2
2. Circuit descriptions
A. Main PWB (MCU)
(1) General
The MCU PWB is composed of:
• CPU peripheral sections which perform mechanical sequence control
and function job management
• Image process ASIC which performs image process, CCD control, LSU
control, and print control
• Motor control circuit
• Mechanical load, sensor I/O circuit
It controls the processes for copying, the transport loads, fusing, the
optical system, the operation panel, and the option PWB.
optical system, the operation panel, and the option PWB.
(2) CPU signal table (H8S/2321)
No.
SIGNAL
In/Out
DESCRIPTION
1
PG3/CS1
Out
ChipSelect for SRAM
2
PG4/CS0
Out
ChipSelect for ROM
3
Vss
GND
Ground
4
NC
GND
Ground
5
Vcc
3.3V
Power
6
PC0/A0
Pull-Up
Address Bus
7
PC1/A1
Out
Address Bus
8
PC2/A2
Out
Address Bus
9
PC3/A3
Out
Address Bus
10
Vss
GND
Ground
11
PC4/A4
Out
Address Bus
12
PC5/A5
Out
Address Bus
13
PC6/A6
Out
Address Bus
14
PC7/A7
Out
Address Bus
15
PB0/A8
Out
Address Bus
16
PB1/A9
Out
Address Bus
17
PB2/A10
Out
Address Bus
18
PB3/A11
Out
Address Bus
19
Vss
GND
Ground
20
PB4/A12
Out
Address Bus
21
PB5/A13
Out
Address Bus
22
PB6/A14
Out
Address Bus
23
PB7/A15
Out
Address Bus
24
PA0/A16
Out
Address Bus
25
PA1/A17
Out
Address Bus
26
PA2/A18
Out
Address Bus
27
PA3/A19
Out
Address Bus
28
Vss
GND
Ground
29
PA4/A20/IRQ4
Pull-Up
Address Bus
30
PA5/A21/IRQ5
In
EXT-PCB Wake Up Interrupt
31
PA6/A22/IRQ6
In
SPF Paper Detect Interrupt
32
PA7/A23/IRQ7
In
ASIC Interrupt
33
P67/IRQ3/CS7
In
Mirror Home Position Interrupt
34
P66/IRQ2/CS6
In
ASIC Interrupt
35
Vss
GND
Ground
36
Vss
GND
Ground
37
P65/IRQ1
In
Zero Cross Interrupt
38
P64/IRQ0
In
ASIC Interrupt
39
Vcc
3.3V
Power
40
PE0/D0
In/Out
Data Bus
41
PE1/D1
In/Out
Data Bus
42
PE2/D2
In/Out
Data Bus
43
PE3/D3
In/Out
Data Bus
44
Vss
GND
Ground
45
PE4/D4
In/Out
Data Bus
46
PE5/D5
In/Out
Data Bus
47
PE6/D6
In/Out
Data Bus
48
PE7/D7
In/Out
Data Bus
49
PD0/D8
In/Out
Data Bus
50
PD1/D9
In/Out
Data Bus
51
PD2/D10
In/Out
Data Bus
52
PD3/D11
In/Out
Data Bus
53
Vss
GND
Ground
54
PD4/D12
In/Out
Data Bus
55
PD5/D13
In/Out
Data Bus
56
PD6/D14
In/Out
Data Bus
57
PD7/D15
In/Out
Data Bus
58
Vcc
3.3V
Power
59
P30/TxD0
Out
CRUM I2C Bus Control
60
P31/TxD1
Out
For Debug
61
P32/RxD0
In/Out
12C Bus DATA
62
P33/RxD1
Option Cassette Detect Signal
63
P34/SCK0
Out
12C Bus Clock
64
P35/SCK1
In
USB Detect Signal
65
Vss
GND
Ground
66
P60/DREQ0/
CS4
Out
Not use
67
Vss
GND
Ground
68
Vss
GND
Ground
69
P61/TEND0/
CS5
In
Flash ROM Ready/Busy
70
P62/DREQ1
Out
Outconnect telephone control
71
P63/TEND1
Out
USB I/F Control
72
P27/PO7/
TIOCB5/TMO1
Out
Not use
73
P26/PO6/
TIOCA5/TMO0
Out
74
P25/PO5/
TIOCB4/TMCI1
Out
Power OFF Signal
75
P24/PO4/
TIOCA4/TMRI1
Print Start Signal
76
P23/PO3/
TIOCD3/TMRI0
Out
Duplex Motor Drive
77
P22/PO2/
TIOCC3/TMRI0
Out
Duplex Motor Drive
78
P21/PO1/
TIOCB3
Out
Duplex Motor Drive
79
P20/PO0/
TIOCA3
Out
Duplex Motor Drive
80
WDTOVF
Pull-Up
Watchdog Timer Over flow
81
RES
In
Reset Input
82
NMI
Pull-Up
NMI Interrupt
83
STBY
Pull-Up
Stand-by
84
Vcc
3.3V
Power
85
XTAL
19.6608MHz System Clock
86
EXTAL
19.6608MHz System Clock
87
Vss
GND
Ground
88
PF7/fai
Pull-Up
System Clock
89
Vcc
3.3V
Power
90
RF6/AS
Out
Software Reset Signal
91
RD
Out
Read Enable
92
HWR
Out
High Write Enable
93
PF3/LWR
Out
Low Write Enable
94
PF2/LCAS/
WAIT/BREQO
Out
151 Selector Signal
95
PF1/BACK
Out
151 Selector Signal
No.
SIGNAL
In/Out
DESCRIPTION
[13]ELECTRICALSECTION.fm 2 ページ ２００４年１１月１２日 金曜日 午後２時２１分
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