Daewoo DTH-14Q1FS Service Manual page 14

PIN NAME/(ABBREV)
32 POWER
33 TV/VIDEO
(R31)
34 SOUND MUTE
(R30)
35 VOLUME
(PWM82)
36 BRIGHTNESS
(PWM81)
37 CONTRAST
(PWM80)
38 SHARPNESS
(RC3/PWM63)
39 COLOR
(RC2/PWM62)
40 TINT
(RC3/PWM63)
2.Function of LAST MEMORY
Always holds a previous DATA by saving the signal of the data,clock,enable on the E2PROM.
FUNCTION
· Active HIGH
· LOW state at initial condition (RESET).
· 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.
· TV: HIGH / VIDEO: LOW
· VIDEO MUTE(#31) is activated for a moment
when this pin is togglled.
(VIDEO MUTE MODE needs OPTION diodes)
· Active HIGH, Normal : LOW
· HIGH out ¡ MUTE.
· 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
· Active HIGH, PWM OUTPUT
· 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
· Active HIGH, PWM OUTPUT
· 64 step (2bit/step) BRIGHTNESS CONTROL
· Active HIGH, PWM OUTPUT
· 64 step (2bit/step) CONTRAST CONTROL
· Active HIGH, PWM OUTPUT
· 64 step (2bit/step) SHARPNESS CONTROL
· Active HIGH, PWM OUTPUT
· 64 step (2bit/step) COLOR CONTROL
· Active HIGH, PWM OUTPUT
· 64 step (2bit/step) TINT CONTROL
12
REMARK
except
CMOS
PUSH PULL
CMOS
PUSH PULL
CMOS