Sharp AR-155 (serv.man13) Service Manual ▷ View online
2. Circuit descriptions
A. Man PWB (MCU)
(1) CPU signal table
PIN
No.
Signal
code
Input/output
Operating
1
/CS1
Output
Chip Select for SRAM
2
/CS0
Output
Chip Select for EPROM
3
D-GND
4
D-GND
5
5V
6
A0
Output
Address Bus (NC-pull up)
7
A1
Output
Address Bus
8
A2
Output
Address Bus
9
A3
Output
Address Bus
10
D-GND
11
A4
Output
Address Bus
12
A5
Output
Address Bus
13
A6
Output
Address Bus
14
A7
Output
Address Bus
15
A8
Output
Address Bus
16
A9
Output
Address Bus
17
A10
Output
Address Bus
18
A11
Output
Address Bus
19
D-GND
20
A12
Output
Address Bus
21
A13
Output
Address Bus
22
A14
Output
Address Bus
23
A15
Output
Address Bus
24
A16
Output
Address Bus
25
A17
Output
Address Bus
26
A18
Output
Address Bus
27
A19
Output
Address Bus (NC-pull up)
28
D-GND
29
A20
Output
Address Bus (NC-pull up)
30
NC-pull up
31
(SPPD)
Interruption
level input
SPF Paper Pass Detector
32
USB-IN
Input
USB Connector-In Detect
33
(MHPS)
Interruption
level input
Mirror Home Position Sensor
34
/CPU
SYNC
SYNC
Interruption
level input
Horizontal Synchronous (from
G/A)
G/A)
35
D-GND
36
D-GND
37
ZC
Interruption
level input
Zero-cross signal
38
/ASICINT
Interruption
level input
Intterupt from G/A
PIN
No.
Signal
code
Input/output
Operating
39
5V
40
D0
Data
input/output
Data Bus
41
D1
Data
input/output
Data Bus
42
D2
Data
input/output
Data Bus
43
D3
Data
input/output
Data Bus
44
D-GND
45
D4
Data
input/output
Data Bus
46
D5
Data
input/output
Data Bus
47
D6
Data
input/output
Data Bus
48
D7
Data
input/output
Data Bus
49
D8
Data
input/output
Data Bus
50
D9
Data
input/output
Data Bus
51
D10
Data
input/output
Data Bus
52
D11
Data
input/output
Data Bus
53
D-GND
54
D12
Data
input/output
Data Bus
55
D13
Data
input/output
Data Bus
56
D14
Data
input/output
Data Bus
57
D15
Data
input/output
Data Bus
58
5V
59
(OP-
DATA)
DATA)
Output
Data Signal for Operation
Panel
Panel
60
FTXD
Output
TXD for Additional Board
61
FRTS
Output
RTS for Additional Board
62
FRXD
Input
RXD for Additional Board
63
(OP-CLK)
Output
Clock for Operation Panel
64
TMON
Output
Power Supply Signal for Toner
Motor Driver IC
Motor Driver IC
65
D-GND
66
FCTS
Input
CTS for Additional Board
67
D-GND
68
D-GND
AR-F151
11 – 4
PIN
No.
Signal
code
Input/output
Operating
69
PSW
Input
Print switch input
70
KIN1
Input
Key input 1
71
KIN2
Input
Key input 2
72
TMCLK
Timer output
Clock for Toner Motor
73
/TMEN
Output
On-Off Control for Toner Motor
74
/POFF
Output
Power Off Signal for
Additional Board
Additional Board
75
PMCLK
Timer output
Clock for Polygon Motor
76
/PRSTART
Output
Printing Start Signal
77
/SCANSP
Output
Scaning Stop Signal
78
/SCANST
Output
Scaning Start Signal
79
HL
Output
(Timer
output)
On-Off Control for Heatrer
Lamp
Lamp
80
WDTOVF-
Output
Watchdog Timer
81
RES-
Input
Reset
82
Input
pull up
83
Input
pull up
84
5V
85
XTAL
Clock
86
EXTAL
Clock
87
D-GND
88
CPUCLK
Output
System Clock for G/A
89
5V
90
/AS
Output
pull up
91
/RD
Output
Read Signal
92
/HWR
Output
Write Signal (High Address)
93
/LWR
Output
Write Signal (Low Address)
94
SELIN3
Output
Input select 3
95
SELIN2
Output
Input select 2
96
SELIN1
Output
Input select 1
97
PR
Output
Power relay control PR
98
RRS
Output
Resist roller solenoid RPC
99
D-GND
100
D-GND
101
SCLK
Output
Clock Line for EEPROM
102
SDA
Output
Data Line for EEPROM
103
A5V
104
Analog Reference Voltage-A5V
105
RTH
Analog input
Fusing Thermister
106
107
SIN1
Input
Sensor input 1
108
SIN2
Input
Sensor input 2
109
SIN3
Input
Sensor input 3
PIN
No.
Signal
code
Input/output
Operating
110
SIN4
Input
Sensor input 4
111
DAH
Analog
output
Reference Voltage (High) for
CCD
CCD
112
DAL
Analog
output
Reference Voltage (Low) for
CCD
CCD
113
AN-GND
114
D-GND
115
DMT-3
Motor output
Duplex Motor Excitement
116
DMT-2
Motor output
Duplex Motor Excitement
117
DMT-1
Motor output
Duplex Motor Excitement
118
DMT-0
Motor output
Duplex Motor Excitement
119
MRMT3
Motor output
Mirror Motor Excitement
120
MRMT2
Motor output
Mirror Motor Excitement
121
MRMT1
Motor output
Mirror Motor Excitement
122
MRMT0
Motor output
Mirror Motor Excitement
123
Input
CPU MODE SET <MODE 4> -
GND
GND
124
Input
CPU MODE SET <MODE 4> -
GND
GND
125
Input
CPU MODE SET <MODE 4> -
Vcc
Vcc
126
NC-pull up
127
DRST
Input
Drum reset detection
128
/CS2
Output
Chip Select for ASIC
∗ The signals which are hatched are added or revised to or from the
AL-1000.
AR-F151
11 – 5
(2) ASIC (Signal table)
PIN No.
Signal name
IN/OUT
Connected to
Description
1
/SCANSP
IN
CPU (I/O)
Scanner process interrupt signal
2
/PRSTART
IN
CPU
Print start trigger signal
3
/TMEN
IN
CPU
Toner motor ON/OFF
4
TMCLK
IN
CPU
Toner motor reference clock
5
3.3V
Power
6
CPUAD7
IN
CPU
CPU address bus
7
CPUAD6
IN
CPU
CPU address bus
8
GND
Power
9
CPUAD5
IN
CPU
CPU address bus
10
CPUAD4
IN
CPU
CPU address bus
11
CPUAD3
IN
CPU
CPU address bus
12
CPUAD2
IN
CPU
CPU address bus
13
CPUAD1
IN
CPU
CPU address bus
14
/CPUSYNC
OUT
CPU
Horizontal synchronization signal
15
/ASICINT
OUT
CPU
Interruption request signal
16
/CS2
IN
CPU
CPU chip select signal
17
/RESET
IN
RESET IC
Reset signal
18
5V
Power
19
GND
Power
20
3.3V
Power
21
GND
Power
22
MDATA15
IN/OUT
DRAM
Data bus of DRAM (page memory)
23
MDATA14
IN/OUT
DRAM
Data bus of DRAM (page memory)
24
MDATA13
IN/OUT
DRAM
Data bus of DRAM (page memory)
25
MDATA12
IN/OUT
DRAM
Data bus of DRAM (page memory)
26
MDATA11
IN/OUT
DRAM
Data bus of DRAM (page memory)
27
MDATA10
IN/OUT
DRAM
Data bus of DRAM (page memory)
28
MDATA9
IN/OUT
DRAM
Data bus of DRAM (page memory)
29
MDATA8
IN/OUT
DRAM
Data bus of DRAM (page memory)
30
MDATA7
IN/OUT
DRAM
Data bus of DRAM (page memory)
31
3.3V
Power
32
MDATA6
IN/OUT
DRAM
Data bus of DRAM (page memory)
33
MDATA5
IN/OUT
DRAM
Data bus of DRAM (page memory)
34
GND
Power
35
MDATA4
IN/OUT
DRAM
Data bus of DRAM (page memory)
36
MDATA3
IN/OUT
DRAM
Data bus of DRAM (page memory)
37
MDATA2
IN/OUT
DRAM
Data bus of DRAM (page memory)
38
MDATA1
IN/OUT
DRAM
Data bus of DRAM (page memory)
39
MDATA0
IN/OUT
DRAM
Data bus of DRAM (page memory)
40
/RAS0
OUT
DRAM
RAS signal 0 of DRAM (page memory)
41
/RAS1
OUT
DRAM
RAS signal 1 of DRAM (page memory)
42
/RAS2
OUT
DRAM
RAS signal 2 of DRAM (page memory)
43
/RAS64
OUT
DRAM control (for
panther)
panther)
(Reserved)
44
3.3V
Power
45
/RAS16
OUT
DRAM control (for
panther)
panther)
(Reserved)
46
MAD0
OUT
DRAM
Address bus of DRAM (page memory)
AR-F151
11 – 6
PIN No.
Signal name
IN/OUT
Connected to
Description
47
GND
Power
48
MAD1
OUT
DRAM
Address bus of DRAM (page memory)
49
MAD2
OUT
DRAM
Address bus of DRAM (page memory)
50
MAD3
OUT
DRAM
Address bus of DRAM (page memory)
51
MAD4
OUT
DRAM
Address bus of DRAM (page memory)
52
MAD5
OUT
DRAM
Address bus of DRAM (page memory)
53
MAD6
OUT
DRAM
Address bus of DRAM (page memory)
54
MAD7
OUT
DRAM
Address bus of DRAM (page memory)
55
MAD8
OUT
DRAM
Address bus of DRAM (page memory)
56
MAD9
OUT
DRAM
Address bus of DRAM (page memory)
57
3.3V
Power
58
MAD10
OUT
DRAM
Address bus of DRAM (page memory)
59
MAD11
OUT
DRAM
Address bus of DRAM (page memory)
60
GND
Power
61
/CAS0
OUT
DRAM
CAS signal of DRAM (page memory)
62
/CAS1
OUT
DRAM
CAS signal of DRAM (page memory)
63
/OE
OUT
DRAM
Read enable signal of DRAM (page memory)
64
/WE
OUT
DRAM
Write enable signal of DRAM (page memory)
65
OUTD0
OUT
FAX board data bus
Transmission data 0 to expanded board
66
OUTD1
OUT
FAX board data bus
Transmission data 1 to expanded board
67
OUTD2
OUT
FAX board data bus
Transmission data 2 to expanded board
68
OUTD3
OUT
FAX board data bus
Transmission data 3 to expanded board
69
3.3V
Power
70
OUTD4
OUT
FAX board data bus
Transmission data 4 to expanded board
71
OUTD5
OUT
FAX board data bus
Transmission data 5 to expanded board
72
GND
Power
73
OUTD6
OUT
FAX board data bus
Transmission data 6 to expanded board
74
OUTD7
OUT
FAX board data bus
Transmission data 7 to expanded board
75
OUTD8
OUT
FAX board data bus
Transmission data 8 to expanded board
76
OUTD9
OUT
FAX board data bus
Transmission data 9 to expanded board
77
OUTD10
OUT
FAX board data bus
Transmission data 10 to expanded board
78
OUTD11
OUT
FAX board data bus
Transmission data 11 to expanded board
79
OUTD12
OUT
FAX board data bus
Transmission data 12 to expanded board
80
OUTD13
OUT
FAX board data bus
Transmission data 13 to expanded board
81
OUTD14
OUT
FAX board data bus
Transmission data 14 to expanded board
82
OUTD15
OUT
FAX board data bus
Transmission data 15 to expanded board
83
/HSYNC
OUT
PCL, FAX board
Horizontal sync signal with print area output only
84
/PCLPRD
IN
PCL board
Print video data (serial) from PCL board
85
/PCLREQ
OUT
PCL board
DREQ signal to PCL board
86
/PCLACK
IN
PCL board
ACK signal from PCL board
87
/PCLCS
IN
PCL board
88
3.3V
Power
89
GND
Power
90
5V
Power
91
GND
Power
92
/FAXPRD
IN
FAX board
Print video data (serial) from FAX board
93
/FAXREQ
OUT
FAX board
DREQ signal to FAX board
94
/FAXACK
IN
FAX board
ACK signal from FAX board
95
3.3V
Power
AR-F151
11 – 7
Click on the first or last page to see other AR-155 (serv.man13) service manuals if exist.