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OF5750/5950 Series January 2001
A3 - 57
H10
A3.6 High-voltage Power Supply Circuit
This high-voltage power supply circuit receives the high-voltage generation timing control
command that is transmitted in serial through the power supply interface from the control
section. It decodes this command by LSI (IC2) and outputs high-frequency pulses to the
corresponding high-voltage generating circuits through pins 11, 12, 13, 14 and 15 of LSI (IC2).
It su5V to each high-voltage generating circuit as the source voltage. When the cover
is open, the supply of +5V is interrupted to interrupt all the high-voltage outputs. The relation-
ship between the high-frequency pulse output pins and the high-voltage outputs is shown in
the following table.
High-voltage Power Supply Circuit
Power
supply
interface
MCNT-PCB
IC2
IOGA5
DB
CH
TR
CB
SB
LSI
DB
SB
+5V
13
15
11
14
12
CB
TR
CH
High-voltage
outputs
Remarks
SB
DB
CH
TR
CB
High-
frequency
pulse output pins
11
+1.2kV
12
-1.3kV
0V
13
+300V
TRSEL 3: Hi-Z
TRSEL 5: L
Part with slant line: no output
TRSEL 3: L
TRSEL 5: Hi-Z
-500V
-265V
+400V
14
-1.1kV
15
-1.35kV
Summary of Contents for OKIFAX 5950
Page 9: ...CHAPTER 1 GENERAL INFORMATION ...
Page 101: ...OF5750 5950 Series January 2001 1 92 1 6 21 NIC Information ...
Page 107: ...CHAPTER 2 INSTALLATION PROCEDURE ...
Page 264: ...CHAPTER 3 BRIEF TECHNICAL DESCRIPTION ...
Page 272: ...CHAPTER 4 MECHANICAL DISASSEMBLY AND REASSEMBLY ...
Page 277: ...OF5750 5950 Series January 2001 4 5 Appearance of the OKIFAX 5750 5950 ...
Page 302: ...CHAPTER 5 ADJUSTMENTS ...
Page 306: ...CHAPTER 6 CLEANING AND MAINTENANCE ...
Page 341: ...CHAPTER 7 TROUBLESHOOTING AND REPAIR FOR OKIFAX 5750 5950 ...
Page 400: ...Appendix A PC Board Descriptions and Operation ...
Page 491: ...Appendix B DescriptionsofPrintOperation ...
Page 513: ...Appendix C Not used at this time ...
Page 516: ...OF5750 5950 Series January 2001 D 1 Section 1 CABINET ASSEMBLY 27 28 29 ...
Page 518: ...OF5750 5950 Series January 2001 D 3 Section 2 CONTROL PANEL ASSEMBLY 11 ...
Page 520: ...OF5750 5950 Series January 2001 D 5 Section 3 PRINTER ASSEMBLY 53 54 31 10 55 52 34 56 ...
Page 523: ...OF5750 5950 Series January 2001 D 8 Section 4 BASE ASSEMBLY ...
Page 525: ...OF5750 5950 Series January 2001 D 10 Section 5 FRAME ASSEMBLY SCANNER L 31 30 33 32 ...
Page 527: ...OF5750 5950 Series January 2001 D 12 Section 6 FRAME ASSEMBLY SCANNER U ...
Page 529: ...OF5750 5950 Series January 2001 D 14 Section 7 CABLES OPTION BOARDS ...
Page 530: ...OF5750 5950 Series January 2001 D 15 28 29 Section 7 CABLES OPTION BOARDS ...
Page 532: ...Appendix E Not used at this time ...