Conditions For Led To Come On - Toshiba 1550 Service Manual

Conditions for LED to come ON

1 The transistor (Q1 or Q2) connected on the anode side of LED is ON.
2 The output connected to the cathode side of the LED is at "L" level.
When 1, 2 above are fulfilled, the LED is turned ON.
Listed below are the names of LEDs of which ON/OFF is controlled by the DSPON0 signal and the
DSPON1 signal.
DAT1
DAT2
DAT3
DAT4
DAT5
DAT6
DAT7
DAT8
DAT9
DAT10
DAT11
DAT12
DAT13
DAT14
DAT15
DAT16
DAT17
DAT18
DAT19
DAT20
DAT21
DAT22
DAT23
DAT24
DAT25
DAT26
DAT27
DAT28
DAT29
DAT30
DAT31
DAT32
Mar. 1998 © TOSHIBA
DSP-ON0 DSP-ON1
2 IN 1 SRV
APS ADFJ
AMS SRTJ
GRP PM
SRT TE
PS MFJ
INT EXTJ
EXP1 TF
EXP2 FJ1
EXP3 PE1
EXP4 CS1
EXP5 PE2
EXP6 CS2
EXP7 FJ2
EXP8 AUTO
EXP9 PHOT
MAG2-g MAG1-g
MAG2-b MAG1-b
MAG2-a MAG1-a
MAG2-f MAG1-f
MAG2-e MAG1-e
MAG2-d MAG1-d
MAG2-c MAG1-c
ZM50 MAG3-g
ZM71 MAG3-b
ZM82 MAG3-a
ZM100 MAG3-f
ZM122 MAG3-e
ZM144 MAG3-d
ZM200 MAG3-c
DPC %
RDY WAIT
5 - 5 15501560 DISPLAY