23
18
CVBS
OUT
AVDD_DAC
X
CVBS Output
19
REF_SW
IN
AVDD_DAC
X
Reference frequency switch
20
SIF
OUT
AVDD_DAC
X
2
nd
SIF output
21
AVDD_DAC
X
DAC supply (+5V)
22
AVSS_DAC
X
DAC ground
23
TEST_EN
IN
DVDD
GND
Test enable
24
RESETQ
IN
DVDD
X
Reset
25
I2C_SDC
I/O
DVDD
X
I
2
C data
26
I2C_SCL
I/O
DVDD
X
I
2
C clock
27
DVDD_CAP
X
Digital supply capacitor
28
DVDD
X
Digital supply (+3.3V)
29
DVSS
X
Digital ground
30
DVSS_CAP
X
Digital capacitor ground
31
PORT0
OUT
DVDD
LV
Digital output port
32
PORT1
OUT
DVDD
LV
Digital output port
33
TUNER_AGC
OUT
DVDD
X
Tuner AGC current output
34
PORT2
OUT
DVDD
LV
Digital output port
35
PORT3
OUT
DVDD
LV
Digital output port
36
PORT4
OUT
DVDD
LV
Digital output port
37
ADR_SEL
IN
DVDD
X
Address select
38
PORT5
OUT
DVDD
LV
Digital output port
39
DVDD_ADC
X
Digital supply for ADC (+3.3V)
40
DVSS_ADC
X
Digital ground for ADC
41
XTAL_IN
IN
AVDD_ADC
X
Crystal oscillator
42
XTAL_OUT
I/O
AVDD_ADC
X
Crystal oscillator/external reference
frequency
43
VREF
AVDD_ADC
X
ADC Reference voltage
44
SGND
AVDD_ADC
X
ADC Reference ground
14.16.LM7808
14.16.1.Description
The L7800 series of three-terminal positive regulators is available in TO -220 TO -220FP TO-3 and D 2
PAK packages and several fixed output voltages, making it useful in a wide range of applications.
These regulators can provide local on-card regulation, eliminating the distribution problems associated
with single point regulation. Each type employs internal current limiting, thermal shutdown and safe
area protection, making it essentially indestructible. If adequate heat sinking is provided, they can
deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices
can be used with external components to obtain adjustable voltages and currents.
14.16. 2.Features
Output Current Up To 1.5 A
Output Voltages of 5; 5.2; 6; 8; 8.5; 9; 12; 15; 18; 24V
Thermal Over load protection
Short Circuit Protection
Output Transition SOA Protection
14.17.BDX53BFI
14.17.1.Description
The BDX53BFI is silicon epitaxial-base NPN power transistor in monolithic Darlington configuration and
are mounted in ISOWATT220 plastic package. It is intended for use in hammer drivers, audio amplifiers
and other medium power linear and switching applications. The complementary PNP type is the
BDX54BFI.
14.17.2.Applications
General purpose switching and amplifier
Linear and switching industrial equipment
Содержание 29VH27E
Страница 1: ...SERVICE MANUAL PRINTED IN UK 2003 C COLOURTELEVISION 29VH27E TOSHIBA 050 200332 AK52 Chassis ...
Страница 2: ...SM52 DRX_IF ...
Страница 5: ...iii 16 3 VIDEO ALIGNMENTS 33 16 4 SERVICE ALIGNMENTS 34 17 BLOCK DIAGRAM 36 18 CIRCUIT DIAGRAMS 37 ...
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