Xerox DocuPrint C55 Service Manual page 279

A B
ESS CONNECTOR PWB PL 3.2
ESS PWB PL 3.2
1
INPUT
PORTS
P
A
R
A TIF RAM
L Daughter
L PWB
2
E (C55/C55mp)
L
Compression
P
Circuits
O
R
T
Processing)
Token
Ring
PWB
3
Ether
[NC60]
Talk
PWB
Local
Talk
C55/C55mp Options
PWB
Serial Local Talk PWB Ethernet PWB
Serial
4 NC60 Options
Port
Serial included 10 MB Ethernet included
100 MB Ethernet PWB
optional
OPTIONAL PWB
5
ESS PWB
6
7
DocuPrint C55/C55mp[NC60]
C D
CN104
9
5
RAM TIF
11
Daughter
PWB
(C55/C55mp)
7
Decompression
RIPing
Circuits 12
(Raster
Image 3
(C55/
C55mp)
6
4
[NC60]
8
10
Token Ring PWB
Token Ring PWB
ROS ASSY.
LASER
INTERLOCK
SWITCH
PCU PWB
E F G
LASER
PCU
INTERLOCK
PWB
SWITCH
PL 4.2
PL 4.5
CN104
STS
1
CMD
2
CN113
SRDY +5 VDC
12
5
CRDY GND
6 11
VIDEO
READY SYNC
7 10
CONTROL
LOGIC
RES GND
9
8
HSYNC VIDEO DATA
9 8
VSYNC LASER DIODE ON (L) +5 VDC
U4
7
10
DATA GND
11 6
PAGE LASER LOCK
12 5
POLYGON MOTOR LOCK
(L) +5 VDC
4
POLYGON MOTOR ON
U5
(L) +5 VDC
3
GND
POLYGON
2
MOTOR
+24 VDC INTERLOCKED
CONTROL
1
Signal Description
STS Status, IOT sends IOT Status signals to ESS
CMD Command, ESS sends commands to the IOT
SRDY Status Ready, ESS is ready to receive status signals
CRDY
Command Ready, IOT is ready to receive command signals
READY Ready, IOT is ready to print
RES Reset, IOT requests ESS reset
HSYNC
Horizontal Sync, IOT sends line sync to ESS
VSYNC Vertical Sync, IOT sends page sync to ESS
DATA Data, ESS sends raster data to the IOT
PAGE Page, ESS is sending a page of data
2/99
7-5
H J
ROS ASSY.
PL 12.1
CN1007
1 1
2 2
LASER
Laser Beam
CONTROL
CIRCUITS
POLYGON
MOTOR
CIRCUITS
Status
Description
Codes
U4 Laser Diode failure.
U5 Polygon Motor failure.
LASER SCANNING
CHAIN 6 LEVEL 2
SHEET 1 0F 1
Chain 6 Scanning
BSDs