Xerox DocuPrint C55 Service Manual page 283

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9.1 COROTRON POWER AND /DEVELOPER BIAS GENERATION
1
PCU PWB
PL 4.2
CN106
CHARGE ON (L) +24 VDC
2
Charge
GRID BIAS (LOW) ON
Control
8
2
GRID BIAS (MID) ON
9
TRANSFER ON (L) +24 VDC
3
Transfer
Control
TRANSFER CONTROL SIGNAL
3
5
+24 VDC INTERLOCKED
1
GND
7
GND
14
4
BIAS CONTROL SIGNAL
6
K BIAS ON (L) +24 VDC
13
5
C BIAS ON (L) +24 VDC
12
Bias
Control
M BIAS ON (L) +24 VDC
11
6
Y BIAS ON (L) +24 VDC
10
7
DocuPrint C55/C55mp[NC60]
C D E
HIGH VOLTAGE
POWER SUPPLY
PWB
PL 4.2
CN801 CHARGE DC POWER
(RED LARGE)
2
5
GRID DC POWER
Grid
Switching (RED SMALL)
6
1
TRANSFER DC POWER
3
(BLACK)
2
4
1
7
8
CN802
1
BLACK DEVELOPER BIAS
5
(RED)
CN803
CYAN DEVELOPER BIAS
4
1
(RED)
MAGENTA DEVELOPER BIAS
3
3
(RED)
YELLOW DEVELOPER BIAS
2 5
(RED)
2/99
7-9
F G H
CHAIN 9.4
CHAIN 9.4
CHAIN 9.12
HVPS PWB
K BIAS
C BIAS
CHAIN 9.7
M BIAS
Y BIAS
CHAIN 9.9
1
GRID BIAS GRID BIAS
LOW SIGNAL MID SIGNAL
CHAIN 9.9
0 V 24 V
24 V
24 V 24 V
CHAIN 9.9
THE TRANSFER CONTROL SIGNAL INCREASES THE
2
TRANSFER BIAS FOR TRANSPARENCIES. THIS SIGNAL
IS APPROXIMATELY 2.5V FOR PAPER AND 4.6V FOR
TRANSPARENCIES.
Chain 9 Xerographics
J
PCU PWB
GRID
VOLTAGE
550
0 V 650
750
XEROGRAPHICS
CHAIN 9 LEVEL 2
SHEET 1 0F 10
BSDs