DP120F/DP125F Circuit Description
7-52
March 2000 © TOSHIBA TEC
3.19 Top Cover Open Detect Circuit
The top cover open detect circuit consists of the PTC GA (IC45), A/D converter, and other
peripheral devices. It detects the open or closed status of the top cover by monitoring the
voltage of 24VSW supplied from the LVPS.
24VSW delivered from the LVPS is supplied or cut off by the top cover open switch connected
to CN2 of the LVPS. When the top cover is closed, the top cover open switch is pushed down
by the plate of the top cover and turns on to supply 24VSW to the entire system. When the top
cover is open, the top cover open switch turns off to cut off the delivery of the 24VSW power
supply.
The A/D converter of the Main PBA divides 24VSW supplied from the LVPS, converts it to a
digital value, and outputs the ADCDO signal to the PTC GA. The PTC GA compares the rated
value stored in the internal register with the ADCDO signal (measured value). If the measured
value is higher than the rated value, it will be detected that the top cover is closed. If the
measured value is lower than the rated value, it will be detected that the top cover is open and
the message “TOP COVER OPEN” will be displayed on the LCD of the Operation panel PBA.
Fig. 7-3-19
07-03-19
Содержание DP120F
Страница 1: ...PLAINPAPERFACSIMILE File No 31200001 R0112216901 TTEC ...
Страница 294: ...March 2000 TOSHIBA TEC 6 7 DP120F DP125F PBA Outline and Sensor Function 3 7 PC I F PBA Fig 6 3 8 06 03 08 ...
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Страница 316: ...March 2000 TOSHIBA TEC 7 7 DP120F DP125F Circuit Description 1 2 Block Diagram 07 01 10 Fig 7 1 7 ...
Страница 337: ...DP120F DP125F Circuit Description 7 28 March 2000 TOSHIBA TEC 3 1 Memory Circuit Fig 7 3 1 07 03 01 ...
Страница 387: ...DP120F DP125F Circuit Description 7 78 March 2000 TOSHIBA TEC EU AU ASIA HK models Fig 7 4 2 07 04 00E ...
Страница 401: ...DP120F DP125F Circuit Description 7 92 March 2000 TOSHIBA TEC 07 05 00 Fig 7 5 1 ...
Страница 579: ...March 2000 TOSHIBA TEC 9 15 DP120F DP125F Dialing and Communication Procedure b Standard procedure ...
Страница 654: ...DP120F DP125F Troubleshooting 11 42 March 2000 TOSHIBA TEC 2 3 Flow Chart Recommended for Field Service ...
Страница 655: ...March 2000 TOSHIBA TEC 11 43 DP120F DP125F Troubleshooting 2 4 Flow Chart Recommended for Telephone Screening ...
Страница 656: ...DP120F DP125F Troubleshooting 11 44 March 2000 TOSHIBA TEC ...
Страница 699: ...March 2000 TOSHIBA TEC 12 1 DP120F DP125F Appendix Chapter 12 Appendix 1 Sample List 1 1 Protocol Trace List ...
Страница 700: ...DP120F DP125F Appendix 12 2 March 2000 TOSHIBA TEC 1 2 Error Count List ...
Страница 701: ...March 2000 TOSHIBA TEC 12 3 DP120F DP125F Appendix 1 3 Function List for Maintenance ...
Страница 702: ...DP120F DP125F Appendix 12 4 March 2000 TOSHIBA TEC 1 4 Drum Unit ...
Страница 703: ...March 2000 TOSHIBA TEC 12 5 DP120F DP125F Appendix 1 5 Memory Dump List ...
Страница 706: ...SHUWA SHIBA PARK BLDG A 2 4 1 SHIBA KOEN MINATO KU TOKYO 105 8524 JAPAN ...