March 2000 © TOSHIBA TEC
6-1
DP120F/DP125F PBA Outline and Sensor Function
Chapter 6
PBA Outline and Sensor Functions
1. Electrical Components
The electrical components of this machine consists of the scanning section, recording section,
operating section (OPERATION PANEL PBA), controlling section (MAIN PBA, NCU PBA,
MOTHER PBA, PC I/F PBA, DOCUMENT SENSOR PBA, TEL PBA, MEMORY PBA, OP-
TIONAL TRAY PBA) and power supply section (LVPS, HVPS). Each section has the following
functions.
Scanning section:
Reads documents by the CIS.
Recording section:
Records on paper by the LSU, developer assembly, drum unit,
and fuser.
LSU (Records a picture data latent image on the drum)
Developer assembly and drum unit (Develop a picture data
latent image by toner and transfer it to paper)
Fuser (Fixes toner on paper by heating)
Operating section:
OPERATION PANEL PBA (Key input sensing, LED indication
control, LCD control)
Controlling section:
MAIN PBA (Control of the entire system)
NCU PBA (Telephone line control)
MOTHER PBA (Signal relay between the MAIN PBA and each
PBA or I/O)
PC I/F PBA (Circuit for parallel data communication with the
PC)
DOCUMENT SENSOR PBA (Detection of document)
TEL PBA (Signal relay with the handset)
MEMORY PBA (Optional expansion image memory circuit)
OPTIONAL TRAY PBA (Drive control of the optional recording
paper tray)
Power supply section:
LVPS (Generation of supply voltages for the logic system and
drive system and power supply delivery to the fuser)
HVPS PBA (HVPS delivery for charging, development, and
transfer)
Summary of Contents for DP120F
Page 1: ...PLAINPAPERFACSIMILE File No 31200001 R0112216901 TTEC ...
Page 401: ...DP120F DP125F Circuit Description 7 92 March 2000 TOSHIBA TEC 07 05 00 Fig 7 5 1 ...
Page 656: ...DP120F DP125F Troubleshooting 11 44 March 2000 TOSHIBA TEC ...
Page 700: ...DP120F DP125F Appendix 12 2 March 2000 TOSHIBA TEC 1 2 Error Count List ...
Page 701: ...March 2000 TOSHIBA TEC 12 3 DP120F DP125F Appendix 1 3 Function List for Maintenance ...
Page 702: ...DP120F DP125F Appendix 12 4 March 2000 TOSHIBA TEC 1 4 Drum Unit ...
Page 703: ...March 2000 TOSHIBA TEC 12 5 DP120F DP125F Appendix 1 5 Memory Dump List ...
Page 706: ...SHUWA SHIBA PARK BLDG A 2 4 1 SHIBA KOEN MINATO KU TOKYO 105 8524 JAPAN ...