Page: 23
Service Guide ML380
Chapter 2 Principles of Operation
2.1.10 Power Supply
The power supply consists of the power transformer, the filter board and the DC power supply circuit on
the control board.
The AC input voltage is transformed into 8.6 VAC and 46 VAC by the power transformer. These AC
voltages are converted to + 8 vdc, + 5 vdc and + 35 vdc levels by the DC power supply circuit on the
control board. The + 5 vdc is a regulated voltage.
Filter Board
The filter board consists of the power switch, AC fuse and AC noise filter.
Power Transformer
If the internal temperature of the power transformer rises abnormally, the built-in temperature fuse will
open to prevent any damage to other electrical components.
NOTE:
If the temperature fuse in the transformer opens, the transformer must be replaced.
Power Supply Circuit
Converts the AC Voltage input to + 8 vdc, + 5 vdc and + 35 vdc and supplies it to the control board. This
circuit also regulates the + 5 vdc.
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Содержание ML380
Страница 36: ......
Страница 52: ...Partner Exchange BPX for any updates to this material http bpx okidata com...
Страница 56: ......
Страница 87: ...Partner Exchange BPX for any updates to this material http bpx okidata com...
Страница 93: ...Partner Exchange BPX for any updates to this material http bpx okidata com...
Страница 103: ...Partner Exchange BPX for any updates to this material http bpx okidata com...
Страница 132: ...Page 89 Service Guide ML380 Chapter 4 Failure Repair Analysis 4 5 ABNORMAL OUTPUT 4 5 01 Output Samples...
Страница 196: ...Item Okidata P N Oki J P N Description Comments Refer to B 1 02 Disassembly Procedure...