AL-1217 (serv.man15). Electrical section - Sharp Copying Equipment Service Manual (repair manual). Page 5

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AL-1226  ELECTRICAL SECTION  12 - 5
16
ope_latch
OUT
Tr array IC Operation circuit latch 
signal. Data take-in at 
"L"
17
op_data
OUT
Tr array IC Operation circuit data 
signal
18
VCC(AC) 3.3V
Power
19
op_clk
OUT
Tr array IC Operation circuit clock 
signal
20
vfmcnt
OUT
Tr array IC Ventilation fan rotation 
speed control signal. 
"H": High speed, "L": 
Low speed
21
GND(AC)
Power
22
vfm
OUT
Tr array IC Ventilation fan control 
signal. "H": Fan ON
23
tc
OUT
Tr array IC  Transfer charger 
control signal. "H":ON
24
gridl
OUT
Tr array IC Main charger grid 
control signal. "H": L 
output
25
mc
OUT
Tr array IC Main charger control 
signal. "H": ON
26
mrps3
OUT
Tr array IC SPF/RSPF motor 
current control signal
27
mm_y3
OUT
Tr array IC Carriage motor current 
control signal
28
bias
OUT
Tr array IC DV bias control signal. 
"H":ON
29
lden
OUT
Tr array IC Laser circuit control 
signal. "H": Laser 
circuit ON
30
pmd
OUT
Tr array IC Polygon motor control 
signal. "H": Polygon 
motor ON
31
GND(CORE/DC) Power
32
mmd
OUT
Tr array IC Main motor control 
signal. "H": Main motor 
ON
33
GND(CORE/DC) Power
34
VCC(CORE/DC) 
3.3V
Power
35
mpfs
OUT
Tr array IC Manual feed solenoid 
control signal. "H": ON
36
cpfs2
OUT
Tr array IC Second cassette 
paper feed solenoid 
control signal. "H":ON
37
cpfs1
OUT
Tr array IC Cassette paper feed 
solenoid control 
signal. "H":ON
38
poffr
(Not used)
39
rrs
OUT
Tr array IC Resist roller solenoid 
control signal. "H":ON
40
pr
OUT
Tr array IC Power relay control 
signal. "H":ON
41
hl
OUT
Tr array IC Heater lamp control 
signal. "H":ON
42
TMON
OUT
Tr array IC (Not used)
43
TM_
OUT
Buffer IC
Toner motor control 
signal 
44
VCC(AC) 3.3V
Power
45
TM
OUT
Buffer IC
Toner motor control 
signal 
46
miron
OUT
Buffer IC
SPF scanner select 
signal 
47
GND(AC)
Power
48
spfon
OUT
Buffer IC
SPF ON signal
PIN 
No.
Signal Name
IN/OUT
Connected 
to
Description
49
mircnt
OUT
Buffer IC
SPF scanner select 
signal 
50
GND(AC)
Power
51
pcl_s_print
(Not used)
52
fax_s_print
(Not used)
53
es_s_print
(Not used)
54
prareaen
(Not used)
55
d_s_ATDI_B
(Not used)
56
GND(CORE/DC) Power
57
VCC(CORE/
GND) 3.3V
58
pfclko
(Not used)
59
RESET
IN
ASIC reset signal
60
GND(CORE/DC) Power
61
ATRST
IN
(Not used)
62
ATCK
(Not used)
63
ATMS
(Not used)
64
VCC(AC) 3.3V
Power
65
ie1284_stb
IN
I/F board 
connector
/STB signal 
(IEEE1284 
communication port) 
66
ie1284_autofd
IN
I/F board 
connector
/AUTOFD signal 
(IEEE1284 
communication port) 
67
ie1284_slctin
IN
I/F board 
connector
/SLCTIN signal 
(IEEE1284 
communication port) 
68
ie1284_init
IN
I/F board 
connector
/INIT signal 
(IEEE1284 
communication port) 
69
VCC(CORE/DC) 
3.3V
Power
70
ie1284_slct
OUT
I/F board 
connector
SLCT signal 
(IEEE1284 
communication port) 
71
ie1284_pe
OUT
I/F board 
connector
PE signal (IEEE1284 
communication port) 
72
GND(CORE/DC) Power
73
ie1284_busy
OUT
I/F board 
connector
BUSY signal 
(IEEE1284 
communication port) 
74
ie1284_ack
OUT
I/F board 
connector
/ACK signal 
(IEEE1284 
communication port) 
75
ie1284_fault
OUT
I/F board 
connector
/FAULT signal 
(IEEE1284 
communication port) 
76
ie1284_rev
OUT
I/F board 
connector
/REV signal 
(IEEE1284 
communication port) 
77
ie1284_parad7
IN/OUT I/F board 
connector
DATA bus (IEEE1284 
communication port) 
78
ie1284_parad6
IN/OUT I/F board 
connector
DATA bus (IEEE1284 
communication port) 
79
ie1284_parad5
IN/OUT I/F board 
connector
DATA bus (IEEE1284 
communication port) 
80
ie1284_parad4
IN/OUT I/F board 
connector
DATA bus (IEEE1284 
communication port) 
81
ie1284_parad3
IN/OUT I/F board 
connector
DATA bus (IEEE1284 
communication port) 
82
VCC(AC) 3.3V
83
ie1284_parad2
IN/OUT I/F board 
connector
DATA bus (IEEE1284 
communication port) 
84
ie1284_parad1
IN/OUT I/F board 
connector
DATA bus (IEEE1284 
communication port) 
85
GND(AC)
Power
PIN 
No.
Signal Name
IN/OUT
Connected 
to
Description
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