Philips PB52.1HU LA, Руководство по обслуживанию

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Circuit Descriptions, Abbreviation List, and IC Data Sheets EN 165 PB52.1HU LA 9.
9.2 Main Supply
All sets in this chassis come with a buy-in Power Supply Unit
and are a black-box for Service. When defective, a new panel
must be ordered and the defective panel must be sent for
repair, unless the main fuse of the panel is broken. Always
replace a defective fuse with one with the correct
specifications! This part is available in the regular market.
See figures below for an overview of the PSU connectors.
These will make it easier to define if the PSU is defective or not.
In most cases the power supply voltages are mentioned near
the connectors on the power supply.
Figure 9-4 PSU connector overview (for 26” and 32”)
Figure 9-5 PSU connector overview (for 37” and 42”)
9.3 Abbreviation List
0/6/12 SCART switch control signal on A/V
board. 0 = loop through (AUX to TV),
6 = play 16 : 9 format, 12 = play 4 : 3
format
2DNR Spatial (2D) Noise Reduction
3DNR Temporal (3D) Noise Reduction
AARA Automatic Aspect Ratio Adaptation:
algorithm that adapts aspect ratio to
remove horizontal black bars; keeps
the original aspect ratio
ACI Automatic Channel Installation:
algorithm that installs TV channels
directly from a cable network by
means of a predefined TXT page
ADC Analogue to Digital Converter
AFC Automatic Frequency Control: control
signal used to tune to the correct
frequency
AGC Automatic Gain Control: algorithm that
controls the video input of the feature
box
AM Amplitude Modulation
ANR Automatic Noise Reduction: one of the
algorithms of Auto TV
AP Asia Pacific
AR Aspect Ratio: 4 by 3 or 16 by 9
ASF Auto Screen Fit: algorithm that adapts
aspect ratio to remove horizontal black
bars without discarding video
information
ATSC Advanced Television Systems
Committee, the digital TV standard in
the USA
ATV See Auto TV
Auto TV A hardware and software control
system that measures picture content,
and adapts image parameters in a
dynamic way
AV External Audio Video
AVC Audio Video Controller
AVIP Audio Video Input Processor
B/G Monochrome TV system. Sound
carrier distance is 5.5 MHz
BLR Board-Level Repair
BTSC Broadcast Television Standard
Committee. Multiplex FM stereo sound
system, originating from the USA and
used e.g. in LATAM and AP-NTSC
countries
B-TXT Blue TeleteXT
C Centre channel (audio)
CEC Consumer Electronics Control bus:
remote control bus on HDMI
connections
CL Constant Level: audio output to
connect with an external amplifier
CLR Component Level Repair
COLUMBUS COlor LUMinance Baseband
Universal Sub-system
ComPair Computer aided rePair
CP Connected Planet / Copy Protection
CSM Customer Service Mode
CTI Color Transient Improvement:
manipulates steepness of chroma
transients
CVBS Composite Video Blanking and
Synchronization
DAC Digital to Analogue Converter
DBE Dynamic Bass Enhancement: extra
low frequency amplification
DDC See “E-DDC”
I_17501_10 3 .ep s
060 8 0 8
CN3 CN2 CN6 CN4
No
Signal
name
No
Signal
name
No Signal name No
Signal
name
1 24VI 1 24VI 1 12V(audio) 1 12VB
2 24VI 2 24VI 2 -12V(audio) 2 12VB
3 24VI 3 24VI 3 GND2(audio) 3 GND1
4 24VI 4 24VI 4 5.2VS 4 GND1
5 24VI 5 24VI 5 5.2VS
6 GND3 6 GND3 6 5.2VS CN5
7 GND3 7 GND3 7 GND1 No
Signal
name
8 GND3 8 GND3 8 GND1 1 12VB
9 GND3 9 GND3 9 GND1 2 12VB
10 GND3 10 GND3 3 GND1
11 VBRI 11 NC CN7 4 GND1
12 ON/OFF 12 NC No Signal name
13 PWM 1 BL_ADJUST
14 GND1 2 PG
3 BL_ON_OFF CN8
4 GND1 No
Signal
name
5 BOOST 1 12VB
6 PS-ON 2 NC
7 NC 3 GND1
8 +12V
I_17951_014.ep s
070 8 0 8
5V2 7
S TANDBY 6
BL_ON/OFF 3
POWER_OK 2
BL_ADJU S T 1
S ign a l Pin No.
Boo s t 5
GND 4
12V ssb 8
Type : B 8 B-PH-K- S (LF)( S N)
M a ker : J S T
CN 8
GND 9
GND 7
5V2 6
GND2( au dio) 3
12V( au dio) 2
(-)12V( au dio) 1
S ign a l Pin No.
5V2 5
5V2 4
GND 8
Type : B9B-PH-K- S (LF)( S N)
M a ker : J S T
CN7
GND 3
12V 2
12V 1
S ign a l Pin No.
GND
4
Type : B4B-PH-K- S (LF)( S N)
M a ker : J S T
CN4, CN5
LIVE 2
NATURAL 1
S ign a l Pin No.
Type : B2P-VA-BF(LF)( S N)
M a ker : J S T
CN1, CN9
GND 3
NC 2
12V 1
S ign a l Pin No.
Type : B 3 B-PH-K- S (LF)( S N)
M a ker : J S T
CN6
GNDHOT 2
400Vdc 1
S ign a l Pin No.
Type : B2P-VA-BF(LF)( S N)
M a ker : J S T
CN10
HV 2
HV 3
HV 1
S ign a l Pin No.
Type : B0 3 B-PA S K-1(LF)( S N)
M a ker : J S T
CN2, CN 3