DP120F/DP125F Circuit Description
7-94
March 2000 © TOSHIBA TEC
The Operation panel PBA consists of the I/O GA (IC1), LED’s, key switches, LCD, LCD drivers
(IC2-4), and other peripheral devices. It detects the pressed status of each key switch and
controls the lighting and display of the LCD and LED’s. It is connected to CN19 on the Mother
PBA.
Data communication is carried out between the Mother PBA and Operation panel PBA through
OD0-7 and OA1-4.
Lighting of the LED’s is controlled by the lighting signal output by the I/O GA according to the
OD0-7 signal output from the Main PBA. The I/O GA causes the LED2-6 and 9-14 signals to
be HIGH to turn on Q1-12 and 15. This allows voltage to be applied to LED’s 2-6 and 9-14 to
light the LED’s.
Display of the LCD is performed by the LCD drivers (IC2-4) which output the LCDCOM1-64
and LCDSEG1-160 signal according to the OD0-7 signals output from the Main PBA.
For detection of the pressed status of each key switch, the I/O GA causes one of the SWS1-11
signals to be LOW. It is detected that the status is off if the corresponding one of the SWC1-8
signals output through the key switch is at HIGH level, and on if at LOW level.
Signal Name
Type
Active
Description
Destination
OD0-7
I/O
-
I/O Data Bus
IC254
OA1-4
I
-
I/O Address Bus
IC60
LED2-6, O H LED Lighting Control Signals 2-6, 9-14 Q1-5, 8-12, 15
9-14
LCDCOM
O
-
LCD Common Signals 1-64
LCD
1-64
LCDSEG
O
-
LCD Segment Signals 1-160
LCD
1-160
SWS1-11
O
L
Key Switch Detect Output Signals 1-11
Each key
switch
SWC1-8
O
H
Key Switch Detect Input Signals 1-8
I/O GA
01/08
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 ...
Страница 311: ...DP120F DP125F Circuit Description 7 2 March 2000 TOSHIBA TEC 07 01 02 Fig 7 1 2 US CA TW models 2 3 ...
Страница 312: ...March 2000 TOSHIBA TEC 7 3 DP120F DP125F Circuit Description Fig 7 1 3 07 01 03 US CA TW models 3 3 ...
Страница 313: ...DP120F DP125F Circuit Description 7 4 March 2000 TOSHIBA TEC Fig 7 1 4 07 01 01E EU AU ASIA HK models 1 3 ...
Страница 314: ...March 2000 TOSHIBA TEC 7 5 DP120F DP125F Circuit Description Fig 7 1 5 07 01 02E EU AU ASIA HK models 2 3 ...
Страница 315: ...DP120F DP125F Circuit Description 7 6 March 2000 TOSHIBA TEC Fig 7 1 6 07 01 03E EU AU ASIA HK models 3 3 ...
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 ...