Toshiba 4560 Service Manual page 55

• The signals of DSPON0 and DSPON1 be-
come "H" level by one turn every 6 msec.
• Q2 (or Q3) is turned ON when DSPON0 (or
DSPON1) is "L" level.
• LED ON/OFF signal from PNL is inputted
to the SIN (pin 26) terminal of IC1 through
LEDAT signal line. (Serial data)
• The LED ON/OFF signal is inputted to IC1
in serial is outputted to output terminals of
D1 – D16 in parallel.
(3) Condition of LED lighting
1 The transistor (Q2 or Q3) connected on the anode side of the LED is ON status.
2 Output connected on the cathode side of the LED is "L" level.
When the above conditions 1 and 2 are fulfilled, the LED lights.
Refer to the following LED names which are ON/OFF-controlled by DSPON0/DSPON1 signals.
Transmission
LP Signal
order
1
2
3
1 P/3
4
2 P/2
5
3 P/1
6
4 P/0
7
5 P/USER
8
6 APS
9
7 0/3
10
8 0/2
11
9 0/1
12
10 0/0
13
11 0/USER
14
12 AMS
15
16 13 FC
For the DSP-ON-0 signal, LEDs and ICs on PWA-KEY1
For the DSP-ON-1 signal, LEDs and ICs on PWA-KEY2
Nov. 1997 © TOSHIBA
DSP-ON-0
Paper size
Paper size
Paper size
Paper size
Paper size (user adjustment)
Automatic paper selection
Original size
Original size
Original size
Original size
Original size (user adjustment)
Automatic magnification selection
All clear
6 msec 6 msec
Q3
DSPON0
ON OFF
Q2
DSPON1
OFF
LEDAT
D7
LP7
(example)
LP8
(example)
IC7932 LP Signal
IC1-6
IC1-7
IC1-9 1 INT
IC1-10 2 P/S
IC1-11 3 TIMER
IC1-12 4 PHOTO
IC1-14 5 AUTO
IC1-15 6 EXPO1
IC1-16 7 EXPO2
IC1-17 8 EXPO3
IC1-19 9 EXPO4
IC1-20 10 EXPO5
IC1-21 11 EXPO6
IC1-22 12 EXPO7
IC1-24 13 EXPO8
IC1-25 14 EXPO9
5 - 11
Q3
Q2
ON
ON
ON ON
DSP-ON-1
Interruption
Energy saving
Timer
Photo mode
Automatic exposure
Exposure display 1 (L MAX.)
Exposure display 2
Exposure display 3
Exposure display 4
Exposure display 5
Exposure display 6
Exposure display 7
Exposure display 8
Exposure display 9 (D MAX.)
4560/4570 DISPLAY
IC7932
IC1-6
IC1-7
IC1-9
IC1-10
IC1-11
IC1-12
IC1-14
IC1-15
IC1-16
IC1-17
IC1-19
IC1-20
IC1-21
IC1-22
IC1-24
IC1-25