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2/99
BSDs
DocuPrint C55/C55mp[NC60]
7-9
Chain 9 Xerographics
A
B
C
D
E
F
G
H
J
2
1
3
4
5
6
7
9.1 COROTRON POWER AND /DEVELOPER BIAS GENERATION
PCU PWB
PL 4.2
Charge
Control
Transfer
Control
Bias
Control
CN106
HIGH VOLTAGE
POWER SUPPLY
PWB
PL 4.2
CHARGE ON (L) +24 VDC
2
2
CN801
3
3
TRANSFER ON (L) +24 VDC
4
5
TRANSFER CONTROL SIGNAL
5
13
K BIAS ON (L) +24 VDC
1
6
BIAS CONTROL SIGNAL
CHARGE DC POWER
(RED LARGE)
GRID DC POWER
(RED SMALL)
TRANSFER DC POWER
(BLACK)
1
+24 VDC INTERLOCKED
1
7
GND
7
CHAIN 9.4
CHAIN 9.4
CHAIN 9.12
GRID BIAS (LOW) ON
5
8
GRID BIAS (MID) ON
6
9
Grid
Switching
8
14
4
12
C BIAS ON (L) +24 VDC
3
11
M BIAS ON (L) +24 VDC
2
10
Y BIAS ON (L) +24 VDC
CN802
BLACK DEVELOPER BIAS
(RED)
CHAIN 9.7
CYAN DEVELOPER BIAS
(RED)
CHAIN 9.9
MAGENTA DEVELOPER BIAS
(RED)
CHAIN 9.9
YELLOW DEVELOPER BIAS
(RED)
CHAIN 9.9
1
3
5
CN803
GND
GRID BIAS
LOW SIGNAL
GRID BIAS
MID SIGNAL
GRID
VOLTAGE
0 V
24 V
550
24 V
0 V
650
24 V
24 V
750
PCU PWB
HVPS PWB
K BIAS
C BIAS
M BIAS
Y BIAS
1
XEROGRAPHICS
CHAIN 9 LEVEL 2
SHEET 1 0F 10
1
2
2
THE TRANSFER CONTROL SIGNAL INCREASES THE
TRANSFER BIAS FOR TRANSPARENCIES. THIS SIGNAL
IS APPROXIMATELY 2.5V FOR PAPER AND 4.6V FOR
TRANSPARENCIES.
Summary of Contents for DocuPrint C55
Page 14: ...SERVICE CALL PROCEDURES 2 99 NOTES 1 6 DocuPrint C55 C55mp NC60 Notes ...
Page 56: ...OTHER FAULTS RAPs 2 99 NOTES 2 42 DocuPrint C55 C55mp NC60 NOTES ...
Page 76: ...IMAGE QUALITY SPECIFICATIONS 2 99 NOTES 3 20 DocuPrint C55 C55mp NC60 NOTES ...
Page 130: ...REPAIRS ADJUSTMENTS 2 99 NOTES 4 42 DocuPrint C55 C55mp NC60 NOTES ...
Page 216: ...GENERAL PROCEDURES 2 99 NOTES 6 18 DocuPrint C55 C55mp NC60 Notes ...
Page 252: ...GENERAL PROCEDURES 2 99 NOTES 6 54 DocuPrint C55 C55mp NC60 NOTES ...
Page 272: ...GENERAL PROCEDURES 2 99 NOTES 6 74 DocuPrint C55 C55mp NOTES ...
Page 274: ...GENERAL PROCEDURES 2 99 NOTES 6 76 DocuPrint NC60 NOTES ...