Board Descriptions
A - 47
OKIOFFICE 44 Serv. Man., P/N 59276801
A3.5.2
OLHV/TLHV Circuit Diagram (2/2)
This circuit consists of photo-sensors and high voltage generation unit.
Note: If the high-voltage unit inside the OLHV/TLHV circuit board is replaced, the output voltage and
current output from the terminals must be checked and adjusted. This section does not describe
the checking and adjustment methods, however.
DANGER:
DANGER
Do Not
Touch !
HIGH VOLTAGE
You may be subjected to high-voltage electric shock by touching the
following parts without an insulating material:
a. High-voltage unit
b. Contact ass'y
Service Caution
The High Voltage Power Supply Unit in the OKIOFFICE 44 is mounted vertically on the
left side of the unit, with the land side fully exposed. This board develops voltages of
up to 1300 VDC as part of the normal printing process.
OKIDATA recommends that the unit be powered OFF (AC supply cord disconnected)
before removing the Main Cover for service. In the event that it is necessary to
troubleshoot the unit with the Main Cover removed, with AC power supplied, please
take every caution to avoid touching the exposed circuitry of the High Voltage Power
Supply Unit. To do so accidentally can result in a shock hazard.
Summary of Contents for OKIOFFICE 44
Page 2: ...All specifications are subject to change without notice Service Manual OKIOFFICE 44 59276801...
Page 135: ...Disassembly 4 6 OKIOFFICE 44 Service Manual P N 59276801 Whole Unit Picture FX048 CP4 1 Fig 01...
Page 329: ...Illustrated Parts List D 6 OKIOFFICE 44 Service Manual P N 59276801 Section 2 Printer Unit...
Page 331: ...Illustrated Parts List D 8 OKIOFFICE 44 Service Manual P N 59276801 Section 3 Operator Panel...
Page 351: ...Illustrated Parts List D 28 OKIOFFICE 44 Service Manual P N 59276801 Section 12 Cables...
Page 357: ...Board Layout E 2 OKIOFFICE 44 Service Manual P N 59276801 MEM eps E 2 MEM PCB...
Page 358: ...Board Layout E 3 OKIOFFICE 44 Service Manual P N 59276801 TEL U eps E 3 TEL U PCB...
Page 359: ...Board Layout E 4 OKIOFFICE 44 Service Manual P N 59276801 Hook eps E 4 Hook PCB...
Page 388: ...OKIOFFICE 44 Service Manual Part Number 59276801 Printed in the USA...