Toshiba 29VH27E, Service Manual

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General features:
CTR offered in 9 groups
Isolation materials according to UL94-VO
Pollution degree 2 (DIN/VDE 0110 / resp. IEC 664)
Climatic classification 55/100/21 (IEC 68 part 1)
Special construction: Therefore, extra low coupling capacity of typical 0.2pF, high
C
ommon
M
ode
R
ejection
Low temperature coefficient of CTR
G = Leadform 10.16 mm; provides creepage distance > 8 mm, for TCET2100/ TCET4100 optional;
suffix letter ‘G’ is not marked on the optocoupler
Coupling System U
14.22.TDA7480L
14.22.1.Description
The TDA7480L is an audio class-D amplifier assembled in Power DIP package specially de-signed for
high efficiency applications mainly for TV and Home Stereo sets.
14.22.2.Features
10W Output Power: R
L
= 8
Ω
/4
Ω
; THD = 10%
High Frequency
No Heatsink
Split Supply
Overvoltage Protection
St-By And Mute Features
Short Circuit Protection
Thermal Overload Protection
14.22.3.Pin Functions
Number Name Function
1 -V
CC
NEGATIVE SUPPLY.
2 -V
CC
NEGATIVE SUPPLY.
3 -V
CC
NEGATIVE SUPPLY.
4 OUT PWM OUTPUT
5 BOOTDIODE BOOTSTRAP DIODE ANODE
6 BOOT BOOTSTRAP CAPACITOR
7 NC NOT CONNECTED
8 FEEDCAP FEEDBACK INTEGRATING CAPACITANCE
9 FREQUENCY SETTING FREQUENCY RESISTOR
10 SGN-GND SIGNAL GROUND
11 IN INPUT
12 ST-BY-MUTE ST-BY/ MUTE CONTROL PIN
13 NC NOT CONNECTED
14 +V
CC
SIGN POSITIVE SIGNAL SUPPLY
15 V
REG
10V INTERNAL REGULATOR
16 +V
CC
POW POSITIVE POWER SUPPLY
17 -V
CC
NEGATIVE SUPPLY (TO BE CONNECTED TO PIN 16 VIA C5)
18 -V
CC
NEGATIVE SUPPLY
19 -V
CC
NEGATIVE SUPPLY
20 -V
CC
NEGATIVE SUPPLY
14.23.SAA3010T
14.23.1.Description
The SAA3010 is intended as a general purpose (RC-5) infrared remote control system for use where a low
voltage supply and a large debounce time are expected. The device can generate 2048 different commands
and utilizes a keyboard with a single pole switch for each key. The commands are arranged so that 32
systems can be addressed, each system containing 64 different commands. The circuit response to legal
(one key pressed at a time) and illegal (more than one key pressed at a time) keyboard operation is specified
in the section “Keyboard operation”.