Daewoo DTX-21G2 Service Manual page 20

87 SIFAGC/DVBAGC (2)
88
89
QSSO/AMOUT/AUDEE
90
91 DECSDEM
92 AUDOUTSR
93 AUDOUTSL
94 AUDIOIN5R
95 AUDIOIN5L
AVL/SWO/SSIF/
96
REFO/REFIN (2)
97
98 AGCOUT
99 SIFIN2/DVBIN2 (2)
100 SIFIN1/DVBIN1 (2)
101
102
103
104
105
106
107
108 EWD/AVL (1)
109 DECBG
110 SECPLL
111
112
113
114
115 DECDIG
116 VGUARD/SWIO
117
118 XTALOUT
119 XTALIN
120 VREF_POS_HPR
121 VREF_NEG_HPL+HPR negative reference voltage SDAC (0 V)
122 VREF_POS_LSR+HPR positive reference voltage SDAC (3.3 V)
123 VREF_NEG_LSL+HPL negative reference voltage SDAC (0 V)
124 VREF_POS_LSL
125 VDDA3(3.3V)
126
127
128
AGC sound IF / internal-external AGC for DVB
applications
PLLIF IF-PLL loop filter
GND2 ground 2 for TV processor
QSS intercarrier output / AM output / deemphasis
(front-end audio
M (2)
out)
decoupling sound demodulator
audio output for SCART/CINCH (right signal)
audio output for SCART/CINCH (left signal)
audio-5 input (right signal)
audio-5 input (left signal)
Automatic Volume Levelling / switch output / sound IF
input /
subcarrier reference output / external reference signal
input for I
signal mixer for DVB operation
EHTO EHT/overvoltage protection input
tuner AGC output
SIF input 2 / DVB input 2
SIF input 1 / DVB input 1
GNDIF ground connection for IF amplifier
IREF reference current input
VSC vertical sawtooth capacitor
VIFIN2 IF input 2
VIFIN1 IF input 1
VDRA vertical drive A output
VDRB vertical drive B output
East-West drive output or AVL capacitor
bandgap decoupling
SECAM PLL decoupling
GND1 ground 1 for TV-processor
PH1LF phase-1 filter
PH2LF phase-2 filter
VP1 1st supply voltage TV-processor (+5 V)
decoupling digital supply
V-guard input / I/O switch (e.g. 4 mA current sinking
capability for
direct drive of LEDs)
VSSA1 Ground
crystal oscillator output
crystal oscillator input
positive reference voltage SDAC (3.3 V)
positive reference voltage SDAC (3.3 V)
supply (3.3 V)
VDDC4 digital supply to SDACs (1.8V)
VSSC4 Ground
VSSP2 Ground
CP-520V Service Manual
19