Service manual

3 - 4
CN301 (USB interface connector)
Pin No. Signal Name Function
1
2
3
4
USB_VBI
USB_DN
USB_DP
GND
Cable power supply
Differential data signal
Differential data signal
GND
CN302 (Parallel interface connector)
Pin No. Compatible mode Nibble mode
ECP mode
1
2 - 9
10
11
12
13
14
15
16, 17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
STROBE
DATA1 - 8
ACKNLG
BUSY
P.E.
SELECT
AUTO FEED XT
N.C
GND
+5.0V
STROBE-RET(GND)
DATA1-RET(GND)
DATA2-RET(GND)
DATA3-RET(GND)
DATA4-RET(GND)
DATA5-RET(GND)
DATA6-RET(GND)
DATA7-RET(GND)
DATA8-RET(GND)
ACKNLG-RET
BUSY-RET
P.E.-RET
INIT
ERROR
GND
N.C
+5.0V
SELECT IN
HOST CLK
DATA1 - 8
PRT CLK
PRT BUSY
ACK DATA REQ
XFLAG
HOST BUSY
Undefined
GND
VCC
SIGNAL GND
SIGNAL GND
SIGNAL GND
SIGNAL GND
SIGNAL GND
SIGNAL GND
SIGNAL GND
SIGNAL GND
SIGNAL GND
SIGNAL GND
SIGNAL GND
SIGNAL GND
INIT
DATA AVAIL
Undefined
Undefined
Undefined
1284 ACTIVE
HOST CLK
DATA1 - 8
PRT CLK
PRT BUSY
ACK DATA REQ
XFLAG
HOST BUSY
Undefined
GND
VCC
SIGNAL GND
SIGNAL GND
SIGNAL GND
SIGNAL GND
SIGNAL GND
SIGNAL GND
SIGNAL GND
SIGNAL GND
SIGNAL GND
SIGNAL GND
SIGNAL GND
SIGNAL GND
INIT
DATA AVAIL
Undefined
Undefined
Undefined
1284 ACTIVE
CN408 (ASF sensor connector)
Pin No. Signal Name Function
1
2
3
VSEN_5V
GND
SNS_ASF
ASF sensor power supply
GND
ASF sensor output signal
CN501 (DC power supply connector)
Pin No. Signal Name Function
1
2, 4
3
5
6
+5V
GND
VH
VM
PowerControl
5V power supply
GND
19V power supply
27V power supply
Power consumption control signal