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6. Test Point Waveform - Sanyo AVM-1420MA Service Manual

Uoc tda9370 with ntsc/pal-m / pal-n
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Vcc
1
Out 1 (+)
2
GND(out 1)
3
Out 1 (-)
4
Standby
5
In 1
6
Note: AN7523 is pin 1 to 9, AN7522 is pin 1 to 12.
LA78040/78045
Function : vertical output
Symbol
PIN
INV IN
1
VCC1
2
PUMP UP
3
GND
4
TDA9859
Function : Universal Sound processor
Symbol
Pin
AV1L
1
P1
2
MAINL
3
CSMO
4
MAINR
5
VP
6
OUT R
7
GND
8
LINOR
9
LINIR
10
CBR1
11
CBR2
12
Headphone R
13
CTR
14
MAINOR
15
SCL
16
CD 8145
Function : EW parabola correction
Symbol
PIN
Keystone input
1
Sawtooth input
2
I ref
3
GND
4
6. Test point Waveforms
2.6Vpp
H
Power supply
Ch 1 output (+)
Ch 1Ground
Ch 1 output (-)
Mute input
Ch 1 input
Function
Input
Power
Pump up power
Ground
Function
AV1 Audio Left input
Not used
Main Audio Left input
Smoothing Capacitor
Main Audio Right input
Power Supply
Right Output
Ground
Line Output Right
Line Input Right
Bass Cap. Right 1
Bass Cap. Right 2
Headphone-R output
Treble Cap. Right
Main Audio out Right
I2C Bus clock
Function
Trapezium
correction input
frame sawtooth
current input
Current reference
Ground
1.2Vpp
H
GND
7
In 2
8
VOL
9
Out 2 (-)
10
GND(out 2)
11
Out 2 (+)
12
Symbol
PIN
V OUT
5
VCC2
6
NON INV IN
7
Symbol
Pin
AV1R
32
P2
31
AV2R
30
CPS1
29
AV2L
28
CPS2
27
OUT L
26
MAD
25
LINOL
24
LINIL
23
CBL1
22
CBL2
21
Headphone L
20
CTL
19
MAINOL
18
SDA
17
Symbol
PIN
NON INV IN
8
INV IN
7
VCC
6
Output
5
14
ground
Ch 2 input
Volume Control
Ch 2 output (-)
Ch 2 Ground
Ch 2 output (+)
Function
Vertical output
Output power supply
Negative feedback
Function
AV1 Audio input Right
Not used
AV2 Audio input Right
Pseudo stereo Cap. 1
AV2 Audio input Left
Pseudo stereo Cap. 2
Left Output
Not used (GND)
Line Output Left
Line Input Left
Bass Cap. Left 1
Bass Cap. Left 2
Headphone-L output
Treble Cap. Left
Main Audio out Left
I2C Bus data
Function
Non-inverting 100 ua
Current sink
Parabola output
Inverting input
VCC
Output

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