Circuit Descriptions, List of Abbreviations, and IC Data Sheets
9.
9.
Circuit Descriptions, List of Abbreviations, and IC Data Sheets
Index of this chapter:
9.1 Introduction
9.2 Block Diagram
9.3 Power Supply (Diagram A1 and A2)
9.4 Control (Diagram B7)
9.5 Tuner and IF (Diagram A8 and B2)
9.6 Video: HD Jack Interface (Diagram N)
9.7 Video: High-end Input Processor (HIP, Diagram B2)
9.8 Video: Feature Box (Diagram B3)
9.9 Video: High-end Output Processor (HOP) and TOPIC
(diagram B4)
9.10 Synchronization (Diagram B2, B3 & B4)
9.11 Horizontal (Line) Deflection (Diagram A3)
9.12 Vertical (Frame) Deflection (Diagram A4)
9.13 Audio (Diagram B6, B10, and A6)
9.14 CRT Panel / Rotation / Scavem (diagram F)
9.15 Software Related Features
9.16 Abbreviation List
9.17 IC Data Sheets
9.1
Introduction
The EM1.1A is a low end EM5 chassis, with the same LSP, but
with a Painter microprocessor (instead of the OTC).
The EM1.1A architecture consists of a full sized LSP/SSP
combination, a smaller sized SSB (mounted on the SSP via a
SIMM connector).
The main functionalities of these boards are:
•
LSP:
supply, deflection, and sound amplification.
•
SSP:
tuner input, SIMM interface, I/O and interface
provisions for extended functions such as PIP.
•
SSB:
core TV functionalities, such as set control, video and
audio decoding, feature box, video featuring, and sync/
geometry control.
The LSP (single sided) is designed very conventionally, with
hardly any surface mounted components on the copper side.
Warning:
be aware that the LSP has a very large 'hot' area,
including both deflection coils.
The SSB is a high tech module (four layer, 2 sides reflow
technology, full SMC) with very high component density and
complete shielding for EMC reasons. Despite this, it is
designed so that repair on component level still is possible. To
achieve this, attention was paid to:
•
The position of service test lands: most of them are at the
Tuner side.
•
Accessibility (Tuner side). If there are still problems with
the accessibility, one can order an extension board (12 NC:
9965 000 05769).
•
Clearance around surface mounted ICs (for replacing).
•
Detailed diagnostics and fault finding is possible via
ComPair.
Caution:
Always be sure that the set is 'off' when you remove
or replace the SSB panel!
9.2
Block Diagram
Figure 9-1 Block diagram
CL 36532038_116.eps
020903
SCAVEM
R
G
B
CRT
+
SCAVEM
EXT
I/O
YUV50
AUDIO-PIP
MSP
VIF
SIF
HA
VA
YUV
VD100
VDHOP
HD100
FBL-TEXT
RGB-TEXT
AUDIO-EXT
MONITOR-OUT (A+V)
VIDEO-EXT
IR
REC.
POWER
SUPPLY
141V
EHT
180V
28V
ETC.
5V2
SIF
AUDIO-EXT
(A) MONITOR-OUT
CVBS-TEXT
TOP
CONTROL
HD
JACK
IF
FILTER
NVM
(PROGR.)
COMB
FILTER
HIP
HOP
CRT
PICNIC (FBX)
PAINTER
PROZONIC
LOW
POWER
STBY
(V)
MAINS 110V
TDA7497
NJM4556
L/R
HP
L
HP
SW
HOT
COLD
R
VERT
HORZ
FRAMEDRIVE-
FRA
E/W
H
D
E/W
TDA9178
TOPIC
TUNER
F-TYPE
IF
AMPL
Содержание EM1.1A
Страница 35: ...Circuit Diagrams and PWB Layouts 35 EM1 1A AA 7 Layout LSP Top Side ...
Страница 37: ...Circuit Diagrams and PWB Layouts 37 EM1 1A AA 7 Layout LSP Overview Bottom Side ...
Страница 38: ...38 EM1 1A AA 7 Circuit Diagrams and PWB Layouts Layout LSP Part 1 Bottom Side ...
Страница 39: ...Circuit Diagrams and PWB Layouts 39 EM1 1A AA 7 Layout LSP Part 2 Bottom Side ...
Страница 40: ...40 EM1 1A AA 7 Circuit Diagrams and PWB Layouts Layout LSP Part 3 Bottom Side ...
Страница 41: ...Circuit Diagrams and PWB Layouts 41 EM1 1A AA 7 Layout LSP Part 4 Bottom Side ...
Страница 65: ...Circuit Diagrams and PWB Layouts 65 EM1 1A AA 7 Layout SSB Part 1 LOT Side CL 36532061_21a eps 270803 Part 1 ...
Страница 66: ...66 EM1 1A AA 7 Circuit Diagrams and PWB Layouts Layout SSB Part 2 LOT Side CL 36532061_21b eps 270803 Part 2 ...
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Страница 116: ...116 EM1 1A AA 7 Circuit Diagrams and PWB Layouts Personal Notes E_06532_013 eps 131004 ...