Samsung CS21A9W2QS/MUR, Service Manual

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Alignment and Adjustments
Samsung Electronics 4-7
4-6-2 UOC MICOM Part Pin Port Function
Pin No
1
2
3
4
5
6
7
8
9
10
11
54
55
56
57
58
59
60
61
62
63
64
INITIAL
LOW
SERIAL H
SERIAL H
LOW
LOW & HIGH
HIGH
HIGH
HIGH
HIGH
GND
HIGH
LOW
HIGH
HIGH
ASSIGNMENT
ACTIVE HIGH
E 2 PROM/UOC/TUNER/MSP34XX SCL LINE
E 2 PROM/UOC/TUNER/MSP34XX SCL LINE
ACTIVE HIGH
STD-BY:LOW, NORMAL OPERATION:HIGH, BUS STOP(STOP:LOW)
MENU, VOL-DOWN, VOL-UP CONTROL
CH-DOWN, CH-UP, TV/VIDEO CONTROL
TV MODE : OV AV MODE:HIGH(3.3V)
4.5Mhz : LOW 5.5-6.5Mhz : HIGH
Digital GND for MICOM
TV MODE : OV AV MODE : HIGH(3.3V)
PAL : HIGH NTSC : LOW L : LOW L’ ; HIGH
Analog supply of TTX and Digital supply of TV(3.3V)
OTP Programming voltage
Digital supply to core(3.3V)
Oscillator GND supply
XTAL oscillator input
XTAL oscillator output
POWER ON : 25ms HIGN -> LOW
Digital supply to periphery(3.3V)
PRE AMP Signal input
Select bilingual
TV out for inrush voltage : AUOT TV ON
FUNCTION
POWER
SCL
SDA
MUTE
STD-BY & BUS-STOP
KEY-1
KEY-2
SC1-ID & CHINA SOUND
& SAW S/W
GND
TV/VIDEO S/W
NT/PAL & AW-S/W
& L/L’-S/W
VDDA 3.3V
VPE
VDDC 3.3
OSCGND
XTAL IN
XTAL OUT
RESET
VDDP
SIGNAL IN
BILINGUAL
HOLD