ViewSonic VA2016W - 20" LCD Monitor Service Manual page 41

6.3 U701 (Audio amplifier)TDA7496L
SYMBOL PIN
GND 1
GND 2
GND 3
Signal L 4
VAR out 5
VOLUME 6
VAR out 7
NC 8
Signal R 9
SVR 10
STBY 11
MUTE 12
GND 13
OUTR 14
VS 15
VS 16
OUTL 17
GND 18
GND 19
GND 20
6.4. IC501 (OZ9910G, CCFL Inverter controller IC)
Pin Symbol
1 NDRV2
2 PGND
3 NDRV1
4 GNDA
5 CT
6 LCT
7 DIM
8 ENA
9 VSEN
10 CMP_SST
11 ISEN
12 V5000
13 VIN
14 HSB
15 PDRV1
16 PDRV2
ViewSonic Corporation
DESCRIPTION
Ground
Ground
Ground
Signal input left
VAR output
DC volume control
VAR output
Not connected
Signal input right
Supply voltage
rejection
Standby
Sound mute
Ground
Audio output right
Power supply
Power supply
Audio output left
Ground
Ground
Ground
I/O
O Bottom MOSFET gate drive output in dual forward converter
High-current power ground
O Bottom MOSFET gate drive output in dual forward converter
Low-current signal ground
I Timing capacitor of high frequency oscillator
I Timing capacitor to set LPWM frequency
I Control command input -- DC
I Enable input
I Voltage sense feedback
I Soft start and loop compensation capacitor
I Current sense feedback
O Reference voltage output
I Supply voltage for IC
I High side driver buffer output
O Top MOSFET gate drive output in dual forward converter
O Top MOSFET gate drive output in dual forward converter
Description
38
Confidential - Do Not Copy
VA2016w-2