Philips EM5.1E Service Manual page 113

Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.2
Block Diagram
PIP/DW MODULE
TUNER
PIP/DW
UV13XX SAW
IF
TUNER
F-TYPE
FILTER
EXT
I/O
TOP
CNTRL
KEYBRD
IR
RECEIVER
SUPPLY
VBAT (141V)
VSOUND (+/-16V)
EHT
180V
VTUN
+11V
+8V
+5V
LOW
POWER +5V2 STANDBY
STBY
POWER
ON/OFF
MAINS 110V
The Tuner (item 1200) is a PLL tuner and delivers the IF-signal,
via audio & video SAW-filters, to the HIP (High-end Input
Processor). The HIP has the following functions:
•
IF modulation.
•
Video source- and record select.
•
Colour decoder.
•
Synchronisation.
Three SCART-connectors can be used:
•
SCART1 is fully equipped,
•
SCART2 is meant for VCR. Pin 10 is used for Easylink
(P50) and there is a possibility for Y/C in. The CVBS-out on
pin 19 is meant for WYSIWYR (What You See Is What You
Record).
•
SCART3 is a RGB/CVBS and audio L/R input. It can be
used as 2nd tuner input, in case of a 1-Tuner DW/PIP set.
The HIP delivers YUV and sync signals to the PICNIC. This IC
takes care of:
•
Analogue to Digital conversion and vice versa.
•
50 to 100 Hz conversion.
•
Panorama mode.
•
Noise reduction.
•
Dynamic contrast.
VIF YUV
IF DW
BOCMA
SIF
FILTER PROC.
YUV50
TDA932X SAA4978
VIF YUV
IF HIP PICNIC
H /V
COMB
A A
FILTER
FM
1
VIDEO
SAA4992
AUDIO
FALCONIC
FM FM
2 3
SAA5801
CVBS-TXT
OTC
( P)
MSP34XX
SIF
MSP
AUDIO-PIP
Figure 9-1 Block diagram
FBL
TDA9178 TDA933X
* *
YUV
OUT
TOPIC HOP
H /V
D100 D100
*
YUV_EAGLE
T8F24EF
OUT
FM
EAGLE
5
FM
4
V
SYNC
HFB
RGB-TXT
NVM
(PROGRAM)
FLASH
RAM (EPG)
DRAM
(TXT)
FLASH
RAM (SW)
TDA7490
L/R
L/R
TDA7490
SW/C
NJM4556
HP
HP
The '2fH features'-block in the diagram gives several options:
•
For Digital Scan, the PICNIC is required.
•
For Natural Motion, the FALCONIC is required.
•
For Pixel Plus, the EAGLE is required.
After the PICNIC the, now 100 Hz, YUV-signals are fed to the
FALCONIC for 'Natural Motion', followed by the Eagle for 'Pixel
Plus' enhancement (if present). The processed YUV signals
(from Eagle or PICNIC) are, together with the sync-signals from
the PICNIC, then fed to the HOP (High-end Output Processor).
This IC handles the video control and geometry part. The RGB-
signals for TXT/OSD (from the microprocessor) are also
inserted via the HOP. The video part delivers the RGB signals
to the CRT-panel and the geometry part delivers the H-drive, V-
drive, and a drive-signal for rotation.
Both deflection circuits are 'hot' and located on the LSP. They
are driven by the HOP. To make a galvanic separation, the Line
Drive is driven via transformer 5410 and the Frame Drive via
transformer 5621.The horizontal output stage generates some
supply voltages and the EHT-, focus- and Vg2-voltages.
The RGB amplifiers on the CRT-panel are supplied with 200 V
from the LOT.
EM5.1E
FRAMEDRIVE+
VERT
FRAMEDRIVE-
V
SYNC
E/W
E/W
H
D
HORZ
HFB
SCAVEM
RGB R
AUTO
G
SCAVEM
CRT
B
TILT
ROTATION
*
DASHED ITEMS
ARE ONLY PRESENT
IN SETS WITHOUT "EAGLE"
9. EN 113
COLD HOT
CL 36532017_048.eps
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