DP120F/DP125F Circuit Description
7-98
March 2000 © TOSHIBA TEC
7.3 Power Output Control Circuit
Fig. 7-7-4
07-07-03
The power output control circuit cuts off each power supply (+24V, ±12V, +5V) except 5VPS
when this machine shifts to the Super Power Save mode.
When the Super Power Save mode is activated, the PWSC signal output from the super power
save circuit on the Main PBA goes LOW.
The regulator (IC2) to ge12V stops the supply of power when the PWSC signal goes
LOW.
The regulator (IC3) to generate -12V stops the supply of power when the PWSC signal goes
LOW and Q12 and photo-coupler (PC4) turn on. When PC4 turns on, Q13 and Q11 turn off.
This causes the supply of +5V to be stopped.
The regulator (IC4) to ge24V stops the supply of power when the PWSC signal goes
LOW and Q5 turns on.
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 ...