Copyright 2007 Philips Consumer Electronics B.V. Eindhoven, The Netherlands.
All rights reserved. No part of this publication may be reproduced, stored in a
retrieval system or transmitted, in any form or by any means, electronic,
mechanical, photocopying, or otherwise without the prior permission of Philips.
Published by JY 0772 BU CD Customer ServicePrinted in the NetherlandsSubject to modificationEN 3122 785 17091
EN 2TC7.1U CA1.
Technical Specifications, Connections, and Chassis Overview
1.Technical Specifications, Connections, and Chassis Overview
Index of this chapter:
1.1 Technical Specifications
1.2 Side and Rear Connections
1.3 Chassis Overview
Notes:
•Figures can deviate due to the different set executions.
•Specifications are indicative (subject to change).
1.1Technical Specifications
1.1.1Vision
Display type: CRT, Real Flat
Screen size: 27” (69 cm), 4:3
Tuning system: PLL
Presets/channels: 181
Tuner bands: Full-Cable
TV color systems: ATSC
Video playback: NTSC
Aerial input: 75 ohm, F-type
Cable: Unscrambled Digital
1.1.2Sound
Sound systems: Stereo BTSC
Maximum power (W
1.1.3Miscellaneous
Power supply:
- Mains voltage (V
- Mains frequency (Hz): 50 / 60
Ambient conditions:
- Temperature range (°C): +5 to +40
- Maximum humidity: 90% R.H.
Power consumption (values are indicative)
- Normal operation (W): ≈ 120
- Stand-by (W): < 1
):2 x 2
RMS
): 108-132
AC
:NTSC
Cable -QAM
1.2Side and Rear Connections
Figure 1-1 Side and rear I/O connections
Note: The following connector colour abbreviations are used
(acc. to DIN/IEC 757): Bk= Black, Bu= Blue, Gn= Green, Gy=
Grey, Rd= Red, Wh= White, and Ye= Yellow.
1.2.1Side Connections
Audio / Video In
Ye - Video (CVBS) 1 V_pp / 75 ohm jq
Wh - Audio - L 0.2 V_rms / 10 kohm jq
Rd - Audio - R 0.2 V_rms / 10 kohm jq
S-Video
1-Ground GND H
2-Ground GND H
3-Y 1 V_pp / 75 ohm jq
4-C 0.3 V_pp / 75 ohm jq
1.2.2Rear Connections
CVI (YPbPr In)
Gn - Y 0.7 V_pp / 75 ohm jq
Bu - Pb 0.7 V_pp / 75 ohm jq
Rd - Pr 0.7 V_pp / 75 ohm jq
Wh - Audio - L 0.5 V_rms / 10 kohm jq
Rd - Audio - R 0.5 V_rms / 10 kohm jq
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Dimensions (WxHxD inch): 29.2 x 23 x 19.1
Weight (lb): 94.8
AV In
Ye - Video (CVBS) 1 V_pp / 75 ohm jq
Wh - Audio - L 0.5 V_rms / 10 kohm jq
Rd - Audio - R 0.5 V_rms / 10 kohm jq
AV Out
Ye - Video (CVBS) 1 V_pp / 75 ohm kq
Wh - Audio - L 0.5 V_rms / 10 kohm kq
Rd - Audio - R 0.5 V_rms / 10 kohm kq
Aerial In
- F-type Coax, 75 ohm D
Technical Specifications, Connections, and Chassis Overview
1.3Chassis Overview
CRT PANEL
B
SIDE AV PANEL +
D
HEADPHONE
EN 3TC7.1U CA1.
C1
C2
C3
C4
C5
C6
C7
POWER RESET
TUNER LINK
AUDIO VIDEO
EMBEDDED
DDR MEMORY
FLASH MEMORY
POWER GROUND
ATSC PANEL
Figure 1-2 PWB/CBA locations
FRONT CONTROL PANEL
MONO CARRIER
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EN 4TC7.1U CA2.
Safety Instructions, Warnings, and Notes
2.Safety Instructions, Warnings, and Notes
Index of this chapter:
2.1 Safety Instructions
2.2 Maintenance Instructions
2.3 Warnings
2.4 Notes
2.1Safety Instructions
Safety regulations require the following during a repair:
•Connect the set to the Mains/AC Power via an isolation
transformer (> 800 VA).
•Replace safety components, indicated by the symbol h,
only by components identical to the original ones. Any
other component substitution (other than original type) may
increase risk of fire or electrical shock hazard.
•Wear safety goggles when you replace the CRT.
Safety regulations require that after a repair, the set must be
returned in its original condition. Pay in particular attention to
the following points:
•General repair instruction: as a strict precaution, we advise
you to re-solder the solder connections through which the
horizontal deflection current flows. In particular this is valid
for the:
1. Pins of the line output transformer (LOT).
2. Fly-back capacitor(s).
3. S-correction capacitor(s).
4. Line output transistor.
5. Pins of the connector with wires to the deflection coil.
6. Other components through which the deflection current
flows.
Note: This re-soldering is advised to prevent bad connections
due to metal fatigue in solder connections, and is therefore only
necessary for television sets more than two years old.
•Route the wire trees and EHT cable correctly and secure
them with the mounted cable clamps.
•Check the insulation of the Mains/AC Power lead for
external damage.
•Check the strain relief of the Mains/AC Power cord for
proper function, to prevent the cord from touching the CRT,
hot components, or heat sinks.
•Check the electrical DC resistance between the Mains/AC
Power plug and the secondary side (only for sets that have
a Mains/AC Power isolated power supply):
1. Unplug the Mains/AC Power cord and connect a wire
between the two pins of the Mains/AC Power plug.
2. Set the Mains/AC Power switch to the "on" position
(keep the Mains/AC Power cord unplugged!).
3. Measure the resistance value between the pins of the
Mains/AC Power plug and the metal shielding of the
tuner or the aerial connection on the set. The reading
should be between 4.5 Mohm and 12 Mohm.
4. Switch "off" the set, and remove the wire between the
two pins of the Mains/AC Power plug.
•Check the cabinet for defects, to prevent touching of any
inner parts by the customer.
2.2Maintenance Instructions
We recommend a maintenance inspection carried out by
qualified service personnel. The interval depends on the usage
conditions:
•When a customer uses the set under normal
circumstances, for example in a living room, the
recommended interval is three to five years.
•When a customer uses the set in an environment with
higher dust, grease, or moisture levels, for example in a
kitchen, the recommended interval is one year.
•The maintenance inspection includes the following actions:
1. Perform the “general repair instruction” noted above.
2. Clean the power supply and deflection circuitry on the
chassis.
3. Clean the picture tube panel and the neck of the picture
tube.
2.3Warnings
•In order to prevent damage to ICs and transistors, avoid all
high voltage flashovers. In order to prevent damage to the
picture tube, use the method shown in figure “Discharge
picture tube”, to discharge the picture tube. Use a high
voltage probe and a multi-meter (position V
until the meter reading is 0 V (after approx. 30 s).
V
Figure 2-1 Discharge picture tube
•All ICs and many other semiconductors are susceptible to
electrostatic discharges (ESD w). Careless handling
during repair can reduce life drastically. Make sure that,
during repair, you are connected with the same potential as
the mass of the set by a wristband with resistance. Keep
components and tools also at this same potential.
•Be careful during measurements in the high voltage
section.
•Never replace modules or other components while the unit
is switched "on".
•When you align the set, use plastic rather than metal tools.
This will prevent any short circuits and prevents circuits
from becoming unstable.
2.4Notes
2.4.1General
•Measure the voltages and waveforms with regard to the
chassis (= tuner) ground (H), or hot ground (I), depending
on the tested area of circuitry. The voltages and waveforms
shown in the diagrams are indicative. Measure them in the
Service Default Mode (see chapter 5) with a colour bar
signal and stereo sound (L: 3 kHz, R: 1 kHz unless stated
otherwise) and picture carrier at 475.25 MHz for PAL, or
61.25 MHz for NTSC (channel 3).
•Where necessary, measure the waveforms and voltages
with (D) and without (E) aerial signal. Measure the
voltages in the power supply section both in normal
operation (G) and in stand-by (F). These values are
indicated by means of the appropriate symbols.
•The semiconductors indicated in the circuit diagram and in
the parts lists, are interchangeable per position with the
semiconductors in the unit, irrespective of the type
indication on these semiconductors.
). Discharge
DC
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Directions for Use
EN 5TC7.1U CA3.
2.4.2Schematic Notes
•All resistor values are in ohms, and the value multiplier is
often used to indicate the decimal point location (e.g. 2K2
indicates 2.2 kohm).
•Resistor values with no multiplier may be indicated with
either an "E" or an "R" (e.g. 220E or 220R indicates 220
ohm).
•All capacitor values are given in micro-farads (μ= x10
nano-farads (n= x10
-9
), or pico-farads (p= x10
•Capacitor values may also use the value multiplier as the
decimal point indication (e.g. 2p2 indicates 2.2 pF).
•An "asterisk" (*) indicates component usage varies. Refer
to the diversity tables for the correct values.
•The correct component values are listed in the Spare Parts
List. Therefore, always check this list when there is any
doubt.
2.4.3Lead-free Soldering
Due to lead-free technology some rules have to be respected
by the workshop during a repair:
•Use only lead-free soldering tin Philips SAC305 with order
code 0622 149 00106. If lead-free solder paste is required,
please contact the manufacturer of your soldering
equipment. In general, use of solder paste within
workshops should be avoided because paste is not easy to
store and to handle.
•Use only adequate solder tools applicable for lead-free
soldering tin. The solder tool must be able:
– To reach a solder-tip temperature of at least 400°C.
– To stabilize the adjusted temperature at the solder-tip.
– To exchange solder-tips for different applications.
•Adjust your solder tool so that a temperature of around
360°C - 380°C is reached and stabilized at the solder joint.
Heating time of the solder-joint should not exceed ~ 4 sec.
Avoid temperatures above 400°C, otherwise wear-out of
tips will increase drastically and flux-fluid will be destroyed.
To avoid wear-out of tips, switch “off” unused equipment or
reduce heat.
•Mix of lead-free soldering tin/parts with leaded soldering
tin/parts is possible but PHILIPS recommends strongly to avoid mixed regimes. If this cannot be avoided, carefully
clear the solder-joint from old tin and re-solder with new tin.
2.4.4Alternative BOM identification
The third digit in the serial number (example:
BF2A0635000001) indicates the number of the alternative
-12
B.O.M. (Bill Of Materials) that has been used for producing the
specific TV set. In general, it is possible that the same TV
model on the market is produced with e.g. two different types
of displays, coming from two different suppliers. This will then
result in sets which have the same CTN (Commercial Type
Number; e.g. 28PW9515/12) but which have a different B.O.M.
number.
By looking at the third digit of the serial number, one can
-6
),
).
identify which B.O.M. is used for the TV set he is working with.
If the third digit of the serial number contains the number “1”
(example: BF1A063500001), then the TV set has been
manufactured according to B.O.M. number 1. If the third digit is
a “2” (example: BF2A0635000001), then the set has been
produced according to B.O.M. no. 2. This is important for
ordering the correct spare parts!
For the third digit, the numbers 1...9 and the characters A...Z
can be used, so in total: 9 plus 26= 35 different B.O.M.s can be
indicated by the third digit of the serial number.
Identification: The bottom line of a type plate gives a 14-digit
serial number. Digits 1 and 2 refer to the production center (e.g.
AG is Bruges), digit 3 refers to the B.O.M. code, digit 4 refers
to the Service version change code, digits 5 and 6 refer to the
production year, and digits 7 and 8 refer to production week (in
example below it is 2006 week 17). The 6 last digits contain the
serial number.
MODEL :
PROD.NO:
32PF9968/10
AG 1A0617 000001
MADE IN BELGIUM
220-240V 50/60Hz
~
VHF+S+H+UHF
BJ3.0E LA
S
128W
E_06532_024.eps
130606
Figure 2-2 Serial number (example)
2.4.5Practical Service Precautions
•It makes sense to avoid exposure to electrical shock.
While some sources are expected to have a possible
dangerous impact, others of quite high potential are of
limited current and are sometimes held in less regard.
•Always respect voltages. While some may not be
dangerous in themselves, they can cause unexpected
reactions that are best avoided. Before reaching into a
powered TV set, it is best to test the high voltage insulation.
It is easy to do, and is a good service precaution.
3.Directions for Use
You can download this information from the following websites:
http://www.philips.com/support
http://www.p4c.philips.com
EN 6TC7.1U CA4.
Mechanical Instructions
4.Mechanical Instructions
Index of this chapter:
4.1 Set Disassembly
4.2 Assy / Board Removal
4.3 Service Positions
4.4 Set Re-assembly
Note: Figures below can deviate slightly from the actual
situation, due to the different set executions.
4.1Set Disassembly
Follow the disassemble instructions in described order.
4.1.1Rear Cover Removal
Warning: disconnect the mains power cord before you remove
the rear cover.
1. Remove all the fixation screws of the rear cover [1] and [2].
2. Now, pull the rear cover backwards and remove it.
4.2Assy / Board Removal
Sometimes, it can be necessary to swap a complete assy or
Printed Wiring Board (PWB). How that can be done is
explained below.
4.2.1Side IO/Keyboard Panel Removal
1. Remove the fixation screws [3].
2. Remove the module from the TV.
3. If necessary, release the two fixation clamps [4] at the
underside of the panel, and lift the button frame from the
panel.
2. At the same time, slide the module backwards [6], away
from the CRT.
3. To remove the panel from its bracket, remove fixation
screw [7] and pull away fixation brackets [8]. Lift the panel
from the bracket, it hinges at the underside.
When defective, replace the whole module.
6
Mechanical Instructions
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5
4.2.3Mono Carrier Removal
1. First, disconnect the strain relief of the AC power cord [9].
2. Disconnect all the necessary cables.
3. To remove the Mono Carrier; slide the whole panel
backwards [10] (= away from the front). When stopped, pull
it upwards [11] at the front corners of the bracket (towards
the CRT), and at the same time, move it away from the
CRT [12].
9
Figure 4-8 Mono carrier removal [1/2]
12
11
10
12
EN 7TC7.1U CA4.
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11
10
Figure 4-6 ATSC panel removal [1/2]
7
8
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Figure 4-7 ATSC panel removal [2/2]
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Figure 4-9 Mono carrier removal [2/2]
4.2.4IR/LED Panel Removal
1. Remove the fixation screws [13].
2. Remove the module from the TV.
13
Figure 4-10 IR/LED panel removal
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EN 8TC7.1U CA4.
4.3Service Positions
For easy measurements, you can use the following service
position.
4.3.1Service Position Mono Carrier
Removing cables and repostioning the panel
For better accessibility of the Mono Carrier, do the following
(see Figure “Service position”):
1. If necessary, disconnect some cables, and move the panel
somewhat to the left. Then flip it 90 degrees with its
components towards the CRT [14].
Mechanical Instructions
Figure 4-11 Service position
4.4Set Re-assembly
To re-assemble the whole set, do all processes in reverse
order.
Be sure that, before the rear cover is mounted:
•The mains cord is postioned correctly in its guiding
brackets (make sure that the strain relief is replaced in its
correct position and that it will function correctly!).
•All wires/cables are returned in their original positions.
14
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Service Modes, Error Codes, and Fault Finding
5.Service Modes, Error Codes, and Fault Finding
EN 9TC7.1U CA5.
Index of this chapter:
5.1 Service Modes
5.2 Error Codes
5.3 Fault Finding
5.1Service Modes
For an explanation of the Factory Mode, see chapter 8
“Alignments”.
5.2Error Codes
Not applicable for this chassis.
5.3Fault Finding
5.3.1Can Not Power “On”
Can not Power
On
Fuse OK?
Y
N
Check B+ Ok?
Y
Check the
+5VSTand +12V
Check Horizontal Scan
circuit: Check H-Vcc
and H-out of IC200
Check Q401, T401 and
Q411
Is it IC801 Pin 1
shorted to earth?
N
Y
Check/Replace
IC801
(1) Check if B+ shorted to earth.
(2) To check whether D820 are turnoff. And whether C823
shorted.
N
(3) To check whether Q823 and Q822 are working normally.
1.check the power supply of IC200 is ok?
2.Is Q080,Q081 are working normally?
3. Q821, Q825, IC090 IC201/IC202 are working ok?
Is DB801 OK?
N
Y
Replace DB801
Check the components such as
N
C801, C802, C806, C807
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Figure 5-1 Flow chart “Can not power on”.
EN 10TC7.1U CA5.
5.3.2No Raster, Sound OK
Service Modes, Error Codes, and Fault Finding
No Raster
Sound OK
Is the power supply
of Q403 ok?
N
To check whether R404,
C405, D409ˈT401, Q403,
R422 /R421 are ok?
Figure 5-2 Flow chart “No Raster, Sound OK”.
5.3.3No TV (NTSC) Picture, No Sound, Raster OK
Raster OK, No
Sound , No TV
picture (NTSC)
Check Pin 67 (H-
Y
OUT) voltage ok?
Is there any shorted
in the scan part of the
Change IC200
circuit?
Check each output
Y
voltage of FBT
N
Change the shorted
Y
part.
N
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Is the antenna feed line
or the adapter broken?
Y
Handing the antenna
fault
Check the wave of
pin24/pin25 on IC200 is
N
ok?
Check the power
supply pin15 and RFAGC on IC200 is ok?
Change IC200
Y
N
Check Z100,Q101
ok?
Y
Check tuner power-
supply 33v/5v is ok?
Y
Check tuner RF-
AGC/SCL/SDA is
ok?
N
Check Q105,
Q103/Q102 ,Q104
is ok?
Y
Change the failing
components
Y
Y
Y
Figure 5-3 Flow chart “No TV (NTSC) Picture, No Sound, Raster OK”.
Note: Figures below can deviate slightly from the actual
situation, due to the different set executions.
8.1General Information
Perform all electrical adjustments under the following
conditions:
•Power supply voltage: 120 V
•Connect the set to the mains via an isolation transformer
with low internal resistance.
•Allow the set to warm up for approximately 15 minutes.
•Measure voltages and waveforms in relation to correct
ground (e.g. measure audio signals in relation to
AUDIO_GND).
Caution: It is not allowed to use heatsinks as ground.
•Test probe: Ri > 10 Mohm, Ci < 20 pF.
•Use an isolated trimmer/screwdriver to perform
alignments.
/ 60 Hz (± 10%)
AC
8.2Factory Mode (Service Menu, Service Mode)
For certain alignment procedures, you will need to enter
Factory Mode (Service Menu). See also figure on next page.
Note: All system data in Factory Mode of “Key 8” and “Key 9”
are not adjustable when servicing, otherwise, the set will work
abnormally.
8.2.1How To Enter
1. Press and hold the VOLUME DOWN key tightly on the TV
until minimum level.
2. Then, while holding the VOLUME DOWN key, press the “0”
key three times on the remote control (RC).
8.2.2How To Navigate
•Press “UP (^) / DOWN (v)” cursor key on the RC to select
option.
•Press “LEFT (<) / RIGHT (>)” cursor key on the RC to
adjust or select option.
•Press “0-9”, “CC”, “SLEEP”, “CLEAR”, “MUTE” or
“PICTURE” on the RC as the shortcut key to access factory
menu. All changes in factory data will be saved in
EEPROM automatically.
A few special modes:
•Vertical Stop mode is used to confirm the screen voltage.
Press “GO BACK” key in factory mode and repress “GO
BACK” key to exit.
•White Balance Alignment mode: Press “OK” key on the
factory RC to cut off the I2C control from the CPU to other
ICs. This is only valid during automatic adjustment of the
white balance.
•Initialization of the EEPROM: In Factory Mode, press the
“CLEAR” button. After the screen display “ROM INIT”,
press the “>” button to initialize the EEPROM. When the
screen displays “ROM INIT OK”, the initialization is
completed.
•Factory Mode Initialization of the EEPROM: In Factory
Mode, press the “MUTE” button to initialize the “FactoryOut” status:
– V-CHIP: “Off”.
– Picture presets: “Sports”.
– Sound presets: “Theatre”.
– Volume: “30”.
– Source type: “Cable”.
– CC select: “CC1”.
– CC Display: “Off”.
– Video mode: “DTV”.
– Language: “English”.
– Format: “Normal 4:3”.
– Time zone: “Eastern”.
– Off Time: “Off”.
– On Time: “Off”.
– AVL: “Off”.
– Virgin Mode: “On”.
8.2.3How To Exit
Press the “Ana/Dig” button to exit the Factory Mode.
EN 32TC7.1U CA8.
8.2.4Factory Mode Overview
Enter factory mode:
1. Set volume to "0" with local volume key and Hold
2. Press "0" three times on RC while depressing the volume key.
3. Select number pad on the RC from "0" to "9" to navigate to different menu
4. Within the selected menu, use the navigation key “▲” “▼” on the RC to navigate to different parameters.
5. Within the selected parameter, use the navidation key “◄” “►” on RC to change the value of the parameter.
6. To leave factory mode, select "Antenna" key on the RC/power down the set with the main switch.
0.10:edoC tooB 81.1A:edoC PPA10.10:edoC tooB 81.1A:edoC PPA10.10:edoC
INIC MORTINI MOR01101 LOV01M ELBERT
"4""3""2""1""0"
23LAP KEPC22RAP12MAV03GPW72NEERG0LVL ONOM
"9""8""7""6""5"
FF.FF :edoC APGFFF.FF :edoC APGFFF.FF :edoC APG
111011101 EDOM0101000010PO134VTPHS82CTNC05XTNC
111100002 EDOM10000001
000010003 EDOM1100100030PO13NPHS32CLOC04XTRB
111010114 EDOM0000010040PO9IRB DSO13
101110005 EDOM0010010050PO01IRB CC13ACTNT31XLOC
010011006 EDOM0101000060PO01HDCC0PLOC2NLOC
10001007 EDOM0000001070PO03VDCC0SLOC02XTNT
0
010100008 EDOM1010000080PO31H DSO0STRB02NTNT
000001019 EDOM0
FF.FF :edoC APGFFF.FF :edoC APGFFF.FF :edoC APG
evitcanI 02CGA FR64HSH8
341+5.3LAPKEPFC43WOB13LSV23BPW0LVL
"etuM""raelC""CC""AUTO PIC”
UOC300C: 2.1.3.2.1 07.02.09 TE1.20
APP Code:A1.18 Boot Code:01.01
FGPA Code: FF.FF
BASS T13
TREBLE T22
100HZ T7
300HZ T8
1KHZ T6
3KHZ T6
8KHZ T9
UOC300C: 2.1.3.2.1 07.02.09 TE1.20
APP Code:A1.18 Boot Code:01.01
FGPA Code: FF.FF
BASS STD 28
TREBLE STD 26
100HZ STD 6
300HZ STD 9
1KHZ STD 8
3KHZ STD 6
8KHZ STD 7
"AUTO PIC”
"AUTO PIC”
Figure 8-1 Factory Mode Overview
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Alignments
EN 33TC7.1U CA8.
8.3Alignment procedure
8.3.1B+ Voltage Test
1. Apply 108 - 132 V
standard test pattern to the RF input.
2. Not need to adjust, just for verification: with the TV settings
in “Personal” mode (BRI/CONT/COL in middle position),
test if the voltage at C823 (B+) is 130 V ± 2.0 V.
2. Press key “4” to enter the RF AGC adjustment mode.
3. Press the “NFO” key on the RC for auto adjusting the RF
AGC value. Note: you also can adjust the “RF AGC” item
until the OSD changes from “INACTIVE” to ”ACTIVE”.
4. Input 60 dB grey scale signal, and confirm there is snow on
the screen. Then input 100 dB grey scale signal and check
if the picture is OK.
8.3.3Screen And Focus Voltage Adjustment
Screen voltage adjustment
1. Before adjusting, please confirm that the settings are:
– Input signal: Cross Hatch test pattern
– BRI/CONT/TINT/COLOR in the middle.
– COLOR TEMP= NORMAL.
– PICTURE ENHANCE= OFF.
2. Press the “GO BACK” key on the RC and the screen will
become a horizontal line (vertical stop mode).
3. Then adjust the “Screen” potentiometer on the LOT (lower
one), until the horizontal line is just visible.
4. At this moment (vertical off), measure the VG2 voltage with
a high voltage meter and high voltage test probe (1000:1).
The VG2 voltage spec is 700 V ± 100 V.
Note: Before adjusting VG2, please confirm that RED= 32,
GRN= 32, WPR= 40, WPG= 40, and WPB= 40.
Focus voltage adjustment
1. Adjust the “Focus” potentiometer on the LOT (upper one)
such that the horizontal/vertical line of 2/3 on the screen
looks thinnest.
8.3.4White Balance Adjustment
to the mains power input, and apply a
AC
Note: Only adjust the NORMAL status; the COOL/WARM
settings are default.
Remarks:
•When you enter Factory Mode ”1”, the “BRI/CONT/TINT/
COLOR” auto sets to mid value, PICTURE ENHANCE sets
to OFF, and COLOR TEMP sets to NORMAL.
•When adjusting, RED and GRN are used to adjust black
balance, and WPR, WPB, WPG are used to adjust white
balance.
8.3.5Adjustment Of Sub-Brightness
Input signal: Grey Bar test pattern.
1. Press key “6” in Factory Mode to enter Sub-Brightness
Adjustment.
2. At standard state, adjust “BRTC” parameter until the last
two grey bars are just visible (do not change value
“BRTS”).
8.3.6Picture geometric adjustment
Vertical geometric adjustment
1. Input a NTSC cross hatch pattern with black and white
background signal.
2. Press key “2” on the RC to enter the Vertical Geometric
adjustment.
3. Use the RC to adjust one by one, watch the figure until the
center or the corner grid has a same size.
4. When adjusting the vertical position, make the center of
vertical intermediately.
Table 8-2 Vertical geometry alignment values
ItemDescriptionDefault
VPOS Vertical position48Align if necessary
VAMVertical amplitude21Align if necessary
VSLVertical slope31Align if necessary
VLVertical linearity32Do not align
VSCVertical scroll31Align if necessary
SCLVertical S-correction.32Do not align
WBRVertical start of blanking time in 4:3 mode
(16:9 tube)
WBFVertical end of blanking time in 4:3 mode
(16:9 tube)
BSWBR Right side black width of blue screen6Do not align
BSWBF Left side black width of blue screen9Do not align
Value
7Do not align
7Do not align
Remark
1. Before adjusting, please confirm that the settings are:
– BRI/CONT/TINT/COLOR in the middle.
– COLOR TEMP= NORMAL.
– PICTURE ENHANCE= OFF.
2. Press the “1” key on the RC to enter the White Balance
adjustment.
3. Choose a White Pattern of 27 IRE (192.8 mV), measure
the picture with a color analyzer, and adjust RED and GRN.
4. Choose a White Pattern of 67 IRE (478.57 mV), measure
the picture with a color analyzer, and adjust WPR, WPG
and WPB.
5. Repeat these steps until you get the right color on both dark
and bright pictures (see next table).
If you do not have a color analyzer, please use the default
values as given in figure “Factory mode overview”.
Table 8-1 White balance alignment values
Picture Mode Color Temp.UVY (Nit)
Normal9300K090
Cool12000K090
Warm6500K090
Remarks:
•VSL: the second half may blank; adjust the first half at
display range.
•WBF/WBR is only used on a matching 16:9 tube. At 4:3
picture mode, adjust blanking time of R and F. First press
the “ZOOM” key to switch to 4:3 mode, and then adjust
WBF and WBR respectively to make the over scan meet
the requirements.
•Adjustment is disabled when match 4:3 tube.
•BSWBR and BSWBF do not need adjustment.
EN 34TC7.1U CA8.
Alignments
Horizontal geometry adjustment
1. Input a NTSC cross hatch pattern with black and white
background signal.
2. Press key “3” on the RC to enter the Horizontal Geometric
adjustment.
3. Use the RC to adjust one by one, watch the figure until the
center and the vertical line at left and right side of the
picture becomes straight.
Figure 8-2 Horizontal geometry alignment values
Item DescriptionDefault Value Remark
HSH Horizontal position46Adjust if necessary
PAR Parallelogram22Adjust if necessary
BOW Bow34Adjust if necessary
EWW Horizontal width44Adjust if necessary
EWP Pin cushion correction27Adjust if necessary
UCR Upper corner correction 44Adjust if necessary
LCR Low corner correction48Adjust if necessary
EWT Trapezium correction31Adjust if necessary
Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.Circuit Descriptions, Abbreviation List, and IC Data Sheets
EN 35TC7.1U CA9.
Index of this chapter:
9.1 General
9.2 Brief IC Descriptions
9.3 Abbreviation List
Notes:
Only new circuits (circuits that are not published recently) are
described.
•Figures can deviate slightly from the actual situation, due
to different set executions.
•For a good understanding of the following circuit
descriptions, please use the Wiring, Block (chapter 6) and
Circuit Diagrams (chapter 7). Where necessary, you will
find a separate drawing for clarification.
9.1General
This chassis uses the Philips TDA12000H processor/decoder,
and has the following key components:
•IC200: TDA12000H/N1F00 MCU and Decoder.
•X100: D9453D SAW Filter.
•X101: F9370 SAW Filter.
•TU100: TDQU2-007A ATSC 2IN1 Tuner.
•IC001: M24C64-WBN6P EEPROM.
•IC601: TEA2025B2X2W Audio output amplifier.
•IC301: STV8172A Vertical Deflection Output IC.
•Q405: 2SD2638 Horizontal Output IC.
•IC801: STR-W6735 Power Controller IC.
•CRT: 29” CRT (50Hz) A68QFN893X004.
•IM101: Digital TV standard decode IC TVP9005 (for digital
module).
•II101: ATSC QAM receiver and demodulator (for digital
module).
•IM201: 8MX16 DDR EDD1216AATA (for digital module).
•IM102: 16MB FLASH S29AL016D70TFI02 (for digital
module).
9.2Brief IC Descriptions
9.2.1 IC200
The UOCIII series combines the functions of a Video Signal
Processor (VSP) together with a FLASH embedded TEXT/
Control/Graphics microcontroller (TCG microcontroller) and
US Closed Caption decoder. In addition the following functions
are added:
•Adaptive digital (4H/2H) PAL/NTSC comb filter.
•Teletext decoder with 10 page text memory.
•Multi-standard stereo decoder.
•BTSC stereo decoder.
•Digital sound processing circuit.
•Digital video processing circuit.
The UOCIII series consists of the following 3 basic concepts:
•Stereo. These versions contain the TV processor with a
stereo audio selector, the TCG microcontroller, the multistandard stereo or BTSC decoder, the digital sound
processing circuit and the digital video processing circuit.
Options are the adaptive digital PAL/NTSC comb filter and
a teletext decoder with 10 page text memory.
•AV stereo. These versions contain the TV processor with
stereo audio selector and the TCG microcontroller. Options
are the digital sound processing circuit, the digital video
processing circuit, the adaptive digital PAL/NTSC comb
filter and a teletext decoder with a 10 page text memory.
•Mono sound. These versions contain the TV processor
with a selector for mono audio signals and the TCG
microcontroller. Options are the adaptive digital PAL/NTSC
comb filter and a teletext decoder with 10 page text
memory.
Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.2.2TU100
Intermediate frequency:
•Picture carrier: 45.75 MHz
•Color carrier: 42.17 MHz
•Sound carrier: 41.25 MHz
Pin connection is as follows:
9.2.4IC601
The TEA2025B/D is a monolithic integrated circuit in 12+2+2
Power dip, intended for use as dual or bridge power audio
amplifier. Block diagram is as follows:
Figure 9-4 Pinning TEA2025B/D
9.2.5IC301
The STV8172A is a vertical deflection booster designed for TV
and monitor applications. This device, supplied with up to 35 V,
provides up to 2.5 A output current to drive the vertical
deflection yoke.
The internal fly back generator delivers fly back voltages up to
75 V. In double-supply applications, a stand-by state will be
reached by stopping the (+) supply alone.
Pin connection is as follows:
H_17090_045.eps
290307
Figure 9-2 Blockdiagram Tuner TU100
9.2.3IC001
The I2C-compatible electrically erasable programmable
memory (EEPROM) devices are organized as 8192*8 bit.
Figure 9-3 Blockdiagram and pinning IC100
H_17090_043.eps
290307
H_17090_044.ep
29030
Figure 9-5 Blockdiagram and pinning STV8172A IC301
9.2.6IC801
This is a switching regulator. Block diagram is as follows:
H_17090_046.eps
290307
H_17090_047.eps
290307
Figure 9-6 Blockdiagram and pinning IC801
Circuit Descriptions, Abbreviation List, and IC Data Sheets
s
7
s
7
EN 37TC7.1U CA9.
9.2.7IM101
This is a cost-effective ATSC DTV processor targeted for lowcost, high-volume ATSC DTV receivers and converter boxes
that convert DTV signals to NTSC/PAL output for viewing on
legacy TV receivers.
Block diagram is as follows:
Figure 9-7 Blockdiagram ATSC processor IM101
It is a System on Chip (SoC) device that integrates the main
function of a DTV receiver. A Transport Packet Parser (TPP) is
integrated that includes POD to Host interface support for
Digital Cable. The MP HL MPEG-2 Video Decoder is capable
of fully decoding all ATSC DTV video formats.
A Display Processor is included with the ability to convert any
ATSC DTV format to any other format, including non-standard
display resolutions support for panel based DTVs.
Multi-Format Audio decode and processing is supported with
the Audio Processor.
The On Screen Display (OSD) controller and 2D Graphics
Accelerator can support applications with sophisticated
Graphic User Interface.
An ARM926 CPU is included, which controls the memory
mapped internal devices and runs the application software.
H_17090_048.eps
290307
9.2.9IM201
The EDD1216AATA is a 128 Mbits Double Data Rate (DDR)
SDRAM organized as 2,097,154 words 16 bits 4 banks. Read
and write operations are performed at the cross points of the
CK and the /CK. This high speed data transfer is realized by the
2 bits pre-fetch pipelined architecture.
Data strobe (DQS) both for read and write are available for high
speed and reliable data bus design. By setting extended mode
register, the on-chip Delay Locked Loop (DLL) can be set
enable or disable. It is packaged in 66-pin plastic TSOP (II).
9.2.10 IM102
It is a 16 Mbit, 3.0 Volt-only Flash memory organized as
2,097,152 bytes or 1,048,576 words. The device is offered in
48-ball FBGA, and 48-pin TSOP packages. The word-wide
data (x16) appears on DQ15-DQ0; the byte-wide (x8) data
appears on DQ7-DQ0. This device is designed to be
programmed in-system with the standard system 3.0 volt VCC
supply. A 12.0 V VPP or 5.0 VCC are not required for write or
erase operations. The device can also be programmed in
standard EPROM programmers.
Block diagram is as follows:
9.2.8II101
It offers a high level of integration that greatly simplifies
unidirectional digital cable ready receiver design. For the main
digital channel (Forward Application Transport - FAT), the
THEATER 314 integrates the QAM demodulator and FEC
decoder. In addition, it integrates part of the IF circuitry (one
SAW filter and one amplifier) typically required for the interface
between the tuner and the digital demodulator.
Block diagram is as follows:
H_17090_049.ep
29030
Figure 9-9 Blockdiagram IM102
H_17090_058.ep
30030
Figure 9-8 Blockdiagram II101
EN 38TC7.1U CA9.
Circuit Descriptions, Abbreviation List, and IC Data Sheets
algorithm that adapts aspect ratio to
remove horizontal black bars; keeping
up the original aspect ratio
ADCAnalogue to Digital Converter
AFCAutomatic Frequency Control: control
signal used to tune to the correct
frequency
AGCAutomatic Gain Control: algorithm that
controls the video input of the feature
box
AMAmplitude Modulation
ARAspect Ratio: 4 by 3 or 16 by 9
ATSCAdvanced Television Systems
Committee; HDTV standard for the
USA, using MPEG2 for video and
Dolby Digital for audio
AVAudio Video
B/GMonochrome TV system. Sound
carrier distance is 5.5 MHz
BTSCBroadcast Television System
Committee
CBACircuit Board Assembly (or PWB)
CVBSComposite Video Blanking and
Synchronization
CVIComponent Video Input
DACDigital to analogue Converter
DFUDirections For Use: owner's manual
DNRDynamic Noise Reduction
DRAMDynamic RAM
DSPDigital Signal Processing
DVDDigital Versatile Disc
EEPROMElectrically Erasable and
Programmable Read Only Memory
EXTEXTernal (source), entering the set by
SCART or by cinches (jacks)
FBLFast Blanking: DC signal
accompanying RGB signals
FMField Memory / Frequency Modulation
HH_sync
HDHigh Definition: 720p, 1080i, 1080p
HPHead Phone
IMonochrome TV system. Sound
carrier distance is 6.0 MHz
I2CIntegrated IC bus
ICIntegrated Circuit
IFIntermediate Frequency
IRInfra Red
IRQInterrupt ReQuest
Last StatusThe settings last chosen by the
customer and read and stored in RAM
or in the NVM. They are called at start-
up of the set to configure it according
the customers wishes
LATAMLATin AMerica
LEDLight Emitting Diode
LSLoud Speaker
M/NMonochrome TV system. Sound
carrier distance is 4.5 MHz
MOSFETMetal Oxide Semiconductor Field
Effect Transistor
MPEGMotion Pictures Experts Group
MUTEMUTE Line
NAFTANorth American Free Trade
Association: Trade agreement
between Canada, USA and Mexico
NCNot Connected
NTSCNational Television Standard
Committee. Color system used mainly
in North America and Japan. Color
carrier NTSC M/N = 3.579545 MHz,
NTSC 4.43 = 4.433619 MHz (this is a
VCR norm, it is not transmitted off-air)
NVMNon Volatile Memory: IC containing
TV related data (for example, options)
O/COpen Circuit
OSDOn Screen Display
PCBPrinted Circuit Board (or PWB)
PIPPicture In Picture
PLLPhase Locked Loop. Used, for
example, in FST tuning systems. The
customer can directly provide the
desired frequency
PSUPower Supply Unit
PWBPrinted Wiring Board (or PCB)
RAMRandom Access Memory
RCRemote Control transmitter
RC5 (6)Remote Control system 5 (6), the
signal from the remote control receiver
RFRadio Frequency
RGBRed, Green, and Blue. The primary
and Vertical sync
ROMRead Only Memory
SCSandCastle: two-level pulse derived
from sync signals
S/CShort Circuit
SCLClock signal on I2C bus
SDStandard Definition: 480i, 576i
SDAData signal on I2C bus
SDRAMSynchronous DRAM
SIFSound Intermediate Frequency
SMPSSwitch Mode Power Supply
SNDSouND
SOPSSelf Oscillating Power Supply
SRAMStatic RAM
SSBSmall Signal Board
STBYStand-by
SVHSSuper Video Home System
SWSub Woofer / SoftWare / Switch
THDTotal Harmonic Distortion
TXTTeleteXT
uPMicroprocessor
VLVariable Level out: processed audio
output toward external amplifier
VCRVideo Cassette Recorder
VGAVideo Graphics Array
WYSIWYRWhat You See Is What You Record:
record selection that follows main
picture and sound
XTALQuartz crystal
YPbPrComponent video (Y= Luminance, Pb/
Pr= Color difference signals B-Y and
R-Y, other amplitudes w.r.t. to YUV)
Y/CVideo related signals: Y consists of
luminance signal, blanking level and
sync; C consists of color signal.
Y-OUTLuminance-signal
YUVBaseband component video (Y=