XOCECO TK1433, Service Manual

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TV-processor (3.3 V)
VPE 55 OTP Programming Voltage
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 reset
VDDP 61 digital supply to periphery (+3.3 V)
P1.0/INT1 62 TV/AV (AV1) / AV2 /S-VHS mode Output.
P1.1/T0 63 TV/AV (AV1) / AV2 /S-VHS mode Output.
P1.2/INT0 64 Remote control signal input.
AN7522/AN17821A Function : audio output
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
In 1 6 Ch 1 input Out 2 (+) 12 Ch 2 output (+)
STV9302A/LA78040 Function : vertical output
Symbol PIN Function Symbol PIN Function
INV IN 1 Input V OUT 5 Vertical output
VCC1 2 Power VCC2 6 Output power
supply
PUMP UP 3 Pump up power NON INV IN 7 Negative feedback
GND 4 Ground
IC voltages
TDA(OM)8377
PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
V 2.8 3.8 3.6 3.3 3.5 3.5 0.1 0.1 0 5.4 0.1 0 2.3 8 5 3
PIN 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
V 4 0 4 0.9 0.7 0.8 1.9 1.9 3.9 3.8 1.6 3.2 3.4 0 2.4 0.1
PIN 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
V 0.6 0.5 3.7 1.7 2.4 3.1 8 3.8 0 3.4 1.5 3.6 2.3 2.6 2.6 2.6
PIN 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
V 2.3 7.2 2.7 2.7 2.7 3.5 0 3.5 0.1 1.7 1.8 0 3.5 0.1 0.1 5
STV9302A/LA78040
PIN 1 2 3 4 5 6 7
V 0.7 15 -12 -15 0.3 15.9 -0.07