Insignia IS-TVDVD20A, Service Manual

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IREF 25 Reference current input
VSC 26 Vertical sawtooth capacitor
TUNER AGC 27 Tuner AGC output
AUDEEM/SIFIN1 *1 28 Audio deemphasize or SIF input
DECSDEM/SIFIN2 29 Decoupling sound demodulator
GND2 30 Ground 2 for TV processor
SNDPLL/SIFAGC *1 31 Narrow band PLL filter
AVL 32 Automatic Volume Levelling
HOUT 33 Horizontal output
FBISO 34 Flyback input/sandcastle output
AUDEXT 35 External audio output
EHTO 36 EHT/over voltage protection input
PLL IF 37 IF-PLL loop filter
IFVO/SVO 38 IF video output / selected CVBS output
VP1 39 supply voltage TV processor
CVBS INT 40 internal CVBS input
GND1 41 ground for TV processor
CVBS/Y 42 CVBS/SVHS(Y) input
CHROMA 43 SVHS (C) input
AUDOUT 44 Audio output
INSSW2 45 YUV insertion input
R2/VIN 46 R input / V (R-Y) input / PR input
G2/YIN 47 G input / Y input
B2/UIN 48 B input / U (B-Y) input / PB input
BCLIN 49 Beam current limiter input
BLKIN 50 Black current input
RO 51 Red output
GO 52 Green output
BO 53 Blue output
VDDA 54 Analog supply of Closed Caption decoder and digital supply of TV-processor (3.3 V)
VPE 55 Ground
VDDC 56 Digital supply to core (3.3 V)
OSCGND 57 Oscillator ground supply
XTALIN 58 Crystal oscillator input
XTALOUT 59 Crystal oscillator output
RESET 60 Ground
VDDP 61 Digital supply to periphery (+3.3 V)
P1.0/INT1 62 AV1 / AV2 mode Output.
P1.1/T0 63 AV /S-VHS mode Output.
P1.2/INT0 64 Remote control signal input.
Note
Pin TV SVHS AV1 AV2
62 1 0 0 1
63 1 1 0 0
2. N202 24C08/PCF8598
PIN Function
1 GND
2 GND
3 Upper resistance
4 GND
5 SDA data wire
6 SCL clock wire
7 GND
8 +5V Power
3. N601: Sound power amplify (AN7522N)
Symbol PIN Function Symbol PIN Function
Vcc 1 Power supply GND 7 ground
Out 1 (+) 2 Ch 1 output (+) In 2 8 Ch 2 input
GND(out 1) 3 Ch 1Ground VOL 9 Volume Control
Out 1 (-) 4 Ch 1 output (-) Out 2 (-) 10 Ch 2 output (-)
Standby 5 Mute input GND(out 2) 11 Ch 2 Ground