Daewoo DTH-14Q1FS, Service Manual

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12
PIN NAME/(ABBREV) FUNCTION REMARK
32 POWER · Active HIGH
· LOW state at initial condition (RESET).
except
· Toggle LOW/HIGH when POWER KEY input is detected. HEAT-RUN mode
(LOW
¡
POWER OFF / HIGH
¡
POWER ON)
· Automatically turns to LOW when SLEEP TIMER
(count down) counts “0”.
· Automatically turns to LOW when the OFF TIMER is set
and the clock(TV) indicates OFF-TIME.
· Automatically turns to HIGH when the ON TIMER is set
and the clock (TV) indicates ON-TIME.
33 TV/VIDEO · TV: HIGH / VIDEO: LOW CMOS
(R31) · VIDEO MUTE(#31) is activated for a moment PUSH PULL
when this pin is togglled.
(VIDEO MUTE MODE needs OPTION diodes)
34 SOUND MUTE · Active HIGH, Normal : LOW CMOS
(R30) · HIGH out
¡
MUTE. PUSH PULL
· Following action make the TV set to be MUTE
for a moment.
1. Channel selecting
direct selecting, sequential channel selecting,
AUTO PROGRAM
2. POWER ON/OFF
· When MUTE KEY is detected following changes
are occurred for a moment.
1. VOLUME level
¡
LOW
2. SOUND MUTE(#34)
¡
HIGH
3. Color of OSD : GREEN
¡
RED
35 VOLUME · Active HIGH, PWM OUTPUT CMOS
(PWM82) · 64 STEP (2bit/step) VOLUME CONTROL
· Following action make the VOLUME level to “0”
(MUTE) for a moment.
1. Channel selecting
2. TV/VIDEO selecting
36 BRIGHTNESS · Active HIGH, PWM OUTPUT
(PWM81) · 64 step (2bit/step) BRIGHTNESS CONTROL
37 CONTRAST · Active HIGH, PWM OUTPUT
(PWM80) · 64 step (2bit/step) CONTRAST CONTROL
38 SHARPNESS · Active HIGH, PWM OUTPUT
(RC3/PWM63) · 64 step (2bit/step) SHARPNESS CONTROL
39 COLOR · Active HIGH, PWM OUTPUT
(RC2/PWM62) · 64 step (2bit/step) COLOR CONTROL
40 TINT · Active HIGH, PWM OUTPUT
(RC3/PWM63) · 64 step (2bit/step) TINT CONTROL
2.Function of LAST MEMORY
Always holds a previous DATA by saving the signal of the data,clock,enable on the E2PROM.