Copyright 2008 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.
Front IR / LED Panel(J) 5960
i-Board(HC1) 6163-64
i-Board(HC2) 6263-64
System Interface Panel(SI) 6566
8. Alignments67
9. Circuit Descriptions, Abbreviation List, and IC Data
Sheets74
Abbreviation List78
IC Data Sheets81
10. Spare Parts List86
11. Revision List91
Published by JH 0861 BU CD Customer CarePrinted in the NetherlandsSubject to modificationEN 3122 785 17700
Page 2
EN 2LC7.2HU LB1.
Technical Specifications, Connections, and Chassis Overview
1.Technical Specifications, Connections, and Chassis Overview
Index of this chapter:
1.1 Technical Specifications
1.2 Connection Overview
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: LCD
Screen size: 32” (82 cm), 16:9
Resolution (H × V pixels): 1366 × 768
Dyn. contrast ratio: 7500:1
Min. light output (cd/m
Typ. response time (ms): 8
Viewing angle (H × V degrees): 178 × 178
Tuning system: PLL
Presets/channels: 125 presets
Tuner bands: VHF, UHF, S, H
TV Color systems: ATSC
Dimensions (W × H × D inch): 31.7 × 21.5 × 4.4
Weight (lb.): 32.1
): 110 - 240
AC
1.1.2Sound
Sound systems: Stereo
Maximum power (W
):2 × 10
RMS
: Dolby Digital (AC-3)
Page 3
Technical Specifications, Connections, and Chassis Overview
1.2Connection Overview
EN 3LC7.2HU LB1.
DATA 1
RJ12
JTAG
Special tool needed
(order via BDS)
VGA IN (D-SUB)
AUDIO OUT
(DIGITAL)
A
AV
DATA 2
RJ45
CVI
8 Ohm
H_16990_027.eps
270707
Note: The following connector color abbreviations are used
(acc. to DIN/IEC 757): Bk= Black, Bu= Blue, Gn= Green, Gy=
Grey, Rd= Red, Wh= White, and Ye= Yellow.
1.2.1Rear Connections (top)
RJ12 DATA1 (HM-Link - In/Out)
1-LED_in < 0.3 V, active low j
2-IR_in < 0.3 V, active low j
3 - MODE Vcc j
4 - TV Power Status 4.5 to 5 V: TV “On”
< 0.3 V: TV “Stdby”
High impedance: TV “Off” k
5 - Gnd Gnd H
6 - IR_out Signal k
RJ45 DATA2 (xpress Box - In/Out)
1 - +12V +12V/1W k
2 - Gnd Gnd H
3 - H-sync Signal k
4 - V-sync Signal k
5 - TXD232 Signal
6 - RXD232 Signal
7 - SDA3_IR-OUT Signal k
8 - DCM-POR Signal k
9 - CVBSterr Signal k
10 - Gnd CVBSterr Gnd H
Mini Jack: Speaker - Out
- Loudspeaker 8 ohm ok
Figure 1-1 Side and rear I/O connections
JTAG: Data In - Out
1 - +5 V +5 V power supply k
2 - POR Power On Reset input j
3 - NVM_LOAD NVM load input j
4 - Gnd Gnd H
5 - TDO Data Out Signal k
6 - TDI Test Data In Signal j
7 - TCK Test Clock Signal j
8 - TMS Test Mode Select Signal j
VGA: Video RGB - In
1 - Video Red 0.7 V
2 - Video Green 0.7 V
3 - Video Blue 0.7 V
4-n.c.
5 - Ground Gnd H
6 - Ground Red Gnd H
7 - Ground Green Gnd H
8 - Ground Blue Gnd H
9-+5V
10 - Ground Sync Gnd H
11 - n.c.
12 - DDC_SDA DDC data j
13 - H-sync 0 - 5 V j
14 - V-sync 0 - 5 V j
15 - DDC_SCL DDC clock j
1
5
6
11
10
15
E_06532_002.eps
050404
Figure 1-2 VGA Connector
/ 75 ohm j
PP
/ 75 ohm j
PP
/ 75 ohm j
PP
+5 V j
DC
Page 4
EN 4LC7.2HU LB1.
Technical Specifications, Connections, and Chassis Overview
1.2.2Rear Connections (bottom)
Aerial - In
-- F-type (US) Coax, 75 ohm D
Service Connector “A” (UART)
1 - UART_TX Transmit k
2 - Ground Gnd H
3 - UART_RX Receive j
Service Connector “C” (ComPair)
1 - SDA-S I
2-SCL-S I
2
C Data (0 - 5 V) jk
2
C Clock (0 - 5 V) j
3 - Ground Gnd H
Cinch: S/PDIF - In
Bk - Coaxial 0.2 - 0.6V
/ 75 ohm jq
PP
AV: Cinch: Video CVBS - In, Audio - In
Ye - Video CVBS 1 V
Wh - Audio L 0.5 V
Rd - Audio R 0.5 V
/ 75 ohm jq
PP
/ 10 kohm jq
RMS
/ 10 kohm jq
RMS
AV: S-Video (Hosiden): Video Y/C - In
1 - Ground Y Gnd H
2 - Ground C Gnd H
3 - Video Y 1 V
4 - Video C 0.3 V
/ 75 ohm j
PP
P / 75 ohm j
PP
HDMI: Digital Video, Digital Audio - In
19
182
1
E_06532_017.eps
250505
Figure 1-3 HDMI (type A) connector
1 - D2+ Data channel j
2 - Shield Gnd H
3 - D2- Data channel j
4 - D1+ Data channel j
5 - Shield Gnd H
6 - D1- Data channel j
7 - D0+ Data channel j
8 - Shield Gnd H
9 - D0- Data channel j
10 - CLK+ Data channel j
11 - Shield Gnd H
12 - CLK- Data channel j
13 - n.c.
14 - n.c.
15 - DDC_SCL DDC clock j
16 - DDC_SDA DDC data jk
17 - Ground Gnd H
18 - +5V j
19 - HPD Hot Plug Detect j
20 - Ground Gnd H
CVI: Cinch: Audio - In, Video YPbPr - In
Wh - Audio L 0.5 V
Rd - Audio R 0.5 V
Gn - Video Y 1 V
Bu - Video Pb 0.7 V
Rd - Video Pr 0.7 V
/ 10 kohm jq
RMS
/ 10 kohm jq
RMS
/ 75 ohm jq
PP
/ 75 ohm jq
PP
/ 75 ohm jq
PP
1.3Chassis Overview
MAIN SUPPLY
AT SC/MPEG-4 PANEL
SMALL SIGNAL
B
BOARD
Figure 1-4 PWB/CBA locations
i-BOARD
SYSTEM INTERFACE
PA NE L
CONTROL PANEL
LED PANEL
H_17700_050.eps
HC
SI
E
J
211207
Page 5
Safety Instructions, Warnings, and Notes
2.Safety Instructions, Warnings, and Notes
EN 5LC7.2HU LB2.
Index of this chapter:
2.1 Safety Instructions
2.2 Warnings
2.3 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.
Safety regulations require that after a repair, the set must be
returned in its original condition. Pay in particular attention to
the following points:
•Route the wire trees correctly and fix 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.
•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.
2.2Warnings
•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 the danger of a
circuit becoming unstable.
2.3Notes
2.3.1General
•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 color 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.
•Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic” and the “double-D symbol”, are
trademarks of Dolby Laboratories.
2.3.2Schematic 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=× 10
nano-farads (n= × 10
•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.
2.3.3BGA (Ball Grid Array) ICs
Introduction
For more information on how to handle BGA devices, visit this
URL: www.atyourservice.ce.philips.com (needs subscription,
not available for all regions). After login, select “Magazine”,
then go to “Repair downloads”. Here you will find Information
on how to deal with BGA-ICs.
BGA Temperature Profiles
For BGA-ICs, you must use the correct temperature-profile,
which is coupled to the 12NC. For an overview of these profiles,
visit the website www.atyourservice.ce.philips.com (needs
subscription, but is not available for all regions)
You will find this and more technical information within the
“Magazine”, chapter “Repair downloads”.
For additional questions please contact your local repair help
desk.
2.3.4Lead-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
-9
), or pico-farads (p= × 10
-12
-6
),
).
Page 6
EN 6LC7.2HU LB3.
avoid mixed regimes. If this cannot be avoided, carefully
clear the solder-joint from old tin and re-solder with new tin.
2.3.5Alternative BOM identification
The third digit in the serial number (example:
AG2B0335000001) indicates the number of the alternative
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
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: AG1B033500001), then the TV set has been
manufactured according to B.O.M. number 1. If the third digit is
a “2” (example: AG2B0335000001), 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.
Directions for Use
MODEL :
PROD.NO:
2.3.6Board Level Repair (BLR) or Component Level Repair
(CLR)
If a board is defective, consult your repair procedure to decide
if the board has to be exchanged or if it should be repaired on
component level.
If your repair procedure says the board should be exchanged
completely, do not solder on the defective board. Otherwise, it
cannot be returned to the O.E.M. supplier for back charging!
2.3.7Practical Service Precautions
•It makes sense to avoid exposure to electrical shock.
•Always respect voltages. While some may not be
32PF9968/10
AG 1A0617 000001
Figure 2-1 Serial number (example)
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.
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.
MADE IN BELGIUM
220-240V 50/60Hz
~
VHF+S+H+UHF
BJ3.0E LA
S
E_06532_024.eps
128W
130606
3.Directions for Use
You can download this information from the following websites:
http://www.philips.com/support
http://www.p4c.philips.com
Page 7
4.Mechanical Instructions
Mechanical Instructions
EN 7LC7.2HU LB4.
Index of this chapter:
4.1 Cable Dressing
4.2 Service Positions
4.3 Assy/Panel Removal
4.4 Set Re-assembly
4.1Cable Dressing
Notes:
•Figures below can deviate slightly from the actual situation,
due to the different set executions.
•Follow the disassemble instructions in described order.
4.2Service Positions
For easy servicing of this set, there are a few possibilities
created:
•The buffers from the packaging (see figure “Rear cover”).
•Foam bars (created for Service).
•Aluminium service stands (created for Service).
H_16990_026eps
260707
Figure 4-1 Cable dressing
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EN 8LC7.2HU LB4.
Mechanical Instructions
4.2.1Foam Bars
1
Required for sets
1
42"
E_06532_018.eps
Figure 4-2 Foam bars
The foam bars (order code 3122 785 90580 for two pieces) can
be used for all types and sizes of Flat TVs. See figure “Foam
bars” for details. Sets with a display of 42” and larger, require
four foam bars [1]. Ensure that the foam bars are always
supporting the cabinet and never only the display.
Caution: Failure to follow these guidelines can seriously
damage the display!
By laying the TV face down on the (ESD protective) foam bars,
a stable situation is created to perform measurements and
alignments. By placing a mirror under the TV, you can monitor
the screen.
171106
4.3Assy/Panel Removal
4.3.1Rear Cover
Warning: Disconnect the AC/mains power cord before you
remove the rear cover.
1. Place the TV set upside down on a table top, using the
foam bars (see part “Service Position”).
2. Remove rear cover screws and the stand (if mounted).
3. Remove rear cover.
4.3.2Keyboard Control Panel
1. Refer to next figure.
2. Remove the T10 parker screws.
3. Unplug connector.
4. Remove the unit. Note: as the unit is “secured” by bosses
located on the front cabinet, it can be difficult to remove the
unit. Therefore, it is advised to use a long thin screwdriver,
insert it vertically between the control knobs and the front
cabinet, and use it as a lever (see arrows) while pulling the
unit from the cabinet. You will here some “clicks” during
removal.
5. Release clips and remove the board.
When defective, replace the whole unit.
H_16990_051.eps
Figure 4-3 Keyboard control panel
270707
Page 9
4.3.3IR/LED Panel
1. Refer to next figure.
2. Unplug connector(s) [1].
3. Release clip [2] and remove the board.
When defective, replace the whole unit.
1
Mechanical Instructions
EN 9LC7.2HU LB4.
21
4.3.4Speakers
Mid-range Speakers
1. Refer to next figure.
2. Unplug connectors [1].
3. Remove screws [2].
2
G_16850_009.eps
110107
Figure 4-4 IR/LED panel
212
G_16850_010.eps
H_16990_031.eps
270707
Figure 4-7 i-Board
4.3.6Integrated Card Slot (if present)
1. Refer to next figure.
2. Disconnect all cables [1] from the board.
3. Remove the fixation screws [2].
4. Take out the module.
1
2
110107
Figure 4-5 Mid-range speakers
Tweeters
1. Refer to next figure.
2. Unplug connectors [1].
3. Remove screws [2].
21
Figure 4-6 Tweeters
4.3.5i-Board
1. Refer to next figure.
2. Disconnect all cables from the i-Board.
3. Remove the fixation screws [1].
4. Take out the i-Board.
G_16850_011.eps
110107
H_16990_032.eps
270707
Figure 4-8 Integrated Card Slot
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EN 10LC7.2HU LB4.
s
7
s
7
Mechanical Instructions
4.3.7Main Supply Panel
1. Refer to next figure.
2. Unplug cables [a].
3. Remove the fixation screws [b].
4. Take the board out (it hinges at the left side).
a
b (3×)
a
a
G_16860_065.ep
01020
4.3.9Small Signal Board (SSB)
1. Refer to next figure.
2. Disconnect all cables from the SSB.
3. Remove the screws [1] that hold the SSB.
4. Remove the screws that hold the CINCH and HDMI
connectors at the connector panel.
5. Lift the SSB from the set.
21
Figure 4-11 SSB removal
H_16990_030.eps
270707
Figure 4-9 Main supply panel
4.3.8ATSC-MPEG-4 panel
1. Refer to next figure.
2. Disconnect all cables [1] on the SSB.
3. Remove the screws [2] that hold the ATSC-MPEG4 panel.
4. Lift the panel from the set.
2
2
1
2
2
Figure 4-10 ATSC-MPEG-4 panel removal
H_16990_033.ep
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Mechanical Instructions
EN 11LC7.2HU LB4.
4.3.10 LCD Panel
1. Refer to next figure(s).
2. Unplug the connectors on the Main Supply Panel, the LED
& IR board and the connectors from the loudspeakers [1].
3. Do NOT forget to unplug the LVDS connector [2] from the
SSB. Important: Be careful, as this is a fragile connector!
4. Remove the screw that holds the Side I/O module bracket.
1
5. Remove screws[3] of the central sub-frame.
6. Remove LCD panel fixation screws [4] and lift the complete
central sub-frame from the set (incl. the PSU, SSB, and
Side I/O boards and wiring).
7. Lift the LCD panel [7] from the front cabinet.
3
4
4
2
4
4
3
1
Figure 4-12 LCD panel [1/2]
4.4Set Re-assembly
To re-assemble the whole set, execute all processes in reverse
order.
7
Notes:
•While re-assembling, make sure that all cables are placed
and connected in their original position. See figure “Cable
dressing”.
•Pay special attention not to damage the EMC foams.
Ensure that EMC foams are mounted correctly (one is
located above the LVDS connector on the display, between
the LCD display and the metal sub-frame).
1
H_16990_029.eps
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Figure 4-13 LCD panel 32” [2/2]
G_16850_015.eps
110107
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EN 12LC7.2HU LB5.
Service Modes, Error Codes, and Fault Finding
5.Service Modes, Error Codes, and Fault Finding
Index of this chapter:
5.1 Test Points
5.2 Hotel Mode
5.3 Service Modes
5.4 Service Tools
5.5 Error Codes
5.6 The Blinking LED Procedure
5.7 Software Upgrading
5.8 Fault Finding and Repair Tips
5.1Test Points
In the chassis schematics and layout overviews, the test points
(Fxxx) are mentioned. In the schematics, test points are
indicated with a rectangular box around “Fxxx” or “Ixxx”, in the
layout overviews with a “half-moon” sign.
As most signals are digital, it will be difficult to measure
waveforms with a standard oscilloscope. Several key ICs are
capable of generating test patterns, which can be controlled via
ComPair. In this way it is possible to determine which part is
defective.
Perform measurements under the following conditions:
•Service Default Mode.
•Video: Color bar signal.
•Audio: 3 kHz left, 1 kHz right.
5.2Hotel Mode
Before the service modes can be activated, the set needs to be
switched into normal consumer mode (MTV-Mode) first. Use
an iTV setup remote control (type: RC2753/01, 12nc: 3139 228
88782) to key in the code ‘024995’ directly followed by the
MENU button. The text messages “TV Is Now In MTV Mode”
and “Please Do A Cold Start!” appears on the screen.
Disconnect the set for a few seconds from the mains supply,
reconnect the set to the mains supply again. The set is now in
the normal consumer mode (MTV-Mode).
After repair, place the set into hotel mode (iTV-Mode) again.
Key-in the same code on the remote control as described
above. The text message “TV Is Now In ITV Mode” appears.
A cold start must be performed as described above. The set is
now in the hotel mode (iTV-Mode) again.
5.3Service Modes
Important: Only when the set is in normal consumer mode
(MTV Mode), all service modes can be accessed.
The Service Mode feature is split into four parts:
•Service Default Mode (SDM).
•Service Alignment Mode (SAM).
•Customer Service Mode (CSM).
•Computer Aided Repair Mode (ComPair).
SDM and SAM offer features, which can be used by the Service
engineer to repair/align a TV set. Some features are:
•A pre-defined situation to ensure measurements can be
made under uniform conditions (SDM).
•Activates the blinking LED procedure for error identification
when no picture is available (SDM).
•The possibility to overrule software protections when SDM
was entered via the Service pins.
•Make alignments (e.g. white tone), (de)select options,
enter options codes, reset the error buffer (SAM).
•Display information (“SDM” or “SAM” indication in upper
right corner of screen, error buffer, software version,
operating hours, options and option codes, sub menus).
•Fixed audio and video settings.
The CSM is a Service Mode that can be enabled by the
consumer. The CSM displays diagnosis information, which the
customer can forward to the dealer or call centre. In CSM
mode, “CSM”, is displayed in the top right corner of the screen.
The information provided and the purpose of CSM is to:
•Increase the home repair hit rate.
•Decrease the number of nuisance calls.
•Solved customers' problem without home visit.
ComPair Mode is used for communication between a computer
and a TV on I2C /UART level and can be used by a Service
engineer to quickly diagnose the TV set by reading out error
codes, read and write in NVMs, communicate with ICs and the
uP (PWM, registers, etc.), and by making use of a fault finding
database. It will also be possible to up and download the
software of the TV set via I2C with help of ComPair. To do this,
ComPair has to be connected to the TV set via the ComPair
connector, which will be accessible through the rear of the set
(without removing the rear cover).
5.3.1General
Some items are applicable to all Service Modes or are general.
These are listed below.
Life Timer
During the life time cycle of the TV set, a timer is kept. It counts
the normal operation hours (not the Stand-by hours). The
actual value of the timer is displayed in SDM and CSM in a
decimal value. Every two soft-resets increase the hour by +1.
Software Identification, Version, and Cluster
The software ID, version, and cluster will be shown in the main
menu display of SDM, SAM, and CSM.
The screen will show: “AAAABCD X.YY”, where:
•AAAA is the chassis name: LC71 for analogue range (nonDVB/ATSC), LC72 for digital range (DVB/ATSC).
•B is the region indication: E= Europe, A= AP/China, U=
NAFTA, L= LATAM.
•C is the display indication: L= LCD, P= Plasma.
•D is the language/feature indication: 1= standard, H=
1080p full HD.
•X is the main version number: this is updated with a major
change of specification (incompatible with the previous
software version). Numbering will go from 1 - 9 and A - Z.
– If the main version number changes, the new version
number is written in the NVM.
– If the main version number changes, the default
settings are loaded.
•YY is the sub version number: this is updated with a minor
change (backwards compatible with the previous versions)
Numbering will go from 00 - 99.
– If the sub version number changes, the new version
number is written in the NVM.
– If the NVM is fresh, the software identification, version,
and cluster will be written to NVM.
Display Option Code Selection
When, after an SSB or display exchange, the display option
code is not set properly, it will result in a TV with “no display”.
Therefore, it is required to set this display option code after
such a repair.
To do so, press the following key sequence on a standard RC
transmitter: “062598” directly
“xxx”, where “xxx” is a 3 digit decimal value of the panel type:
see column “Panel Code” in table “Option and display code
overview” (chapter 8), or see sticker on the side/bottom of the
cabinet. When the value is accepted and stored in NVM, the set
followed by MENU and
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Service Modes, Error Codes, and Fault Finding
s
7
EN 13LC7.2HU LB5.
will switch to Stand-by, to indicate that the process has been
completed.
Display Option
Code
39mm
040
PHILIPS
MODEL:
32PF9968/10
27mm
PROD.SERIAL NO:
AG 1A0620 000001
(CTN Sticker)
E_06532_038.eps
Figure 5-1 Location of Display Option Code sticker
During this algorithm, the NVM-content must be filtered,
because several items in the NVM are TV-related and not SSBrelated (e.g. Model and Prod. S/N). Therefore, “Model” and
“Prod. S/N” data is changed into “See Type Plate”.
In case a call centre or consumer reads “See Type Plate” in
CSM mode, he needs to look to the side/bottom sticker to
identify the set, for further actions.
5.3.2Service Default Mode (SDM)
Purpose
Set the TV in SDM mode in order to be able to:
•Create a pre-defined setting for measurements to be
made.
•Override software protections.
•Start the blinking LED procedure.
•Read the error buffer.
•Check the life timer.
Specifications
290107
•Short one of the “Service” jumpers on the TV board during
cold start (see Figures “Service jumper”). Then press the
mains button (remove the short after start-up).
Caution: Activating SDM by shorting “Service” jumpers will
override the DC speaker protection (error 1), the General
I2C error (error 4), and the Trident video processor error
(error 5). When doing this, the service-technician must
know exactly what he is doing, as it could damage the
television set.
SDMSDM
G_16860_027.eps
260107
Figure 5-2 Service jumper (SSB component side)
On Screen Menu
After activating SDM, the following screen is visible, with SDM
in the upper right corner of the screen to indicate that the
television is in Service Default Mode.
HHHHH A A A A B C D- X . Y Y
ERR XX XX XX XX XX
O P X X X X X X X X XX X XX X XX X X
SDM
Table 5-1 SDM default settings
RegionFreq. (MHz)Default syst.
Europe (except France),
475.25PAL B/G
AP-PAL/-Multi
FranceSECAM L
NAFTA, AP-NTSC61.25 (channel 3) NTSC M
LATAMPAL M
•Set linear video and audio settings to 50%, but volume to
25%. Stored user settings are not affected.
•All service-unfriendly modes (if present) are disabled, since
they interfere with diagnosing/repairing a set. These
service unfriendly modes are:
– (Sleep) timer.
– Blue mute/Wall paper.
– Auto switch “off” (when there is no “ident” signal).
– Hotel or hospital mode.
– Child lock or parental lock (manual or via V-chip).
– Skipping, blanking of “Not favorite”, “Skipped” or
“Locked” presets/channels.
– Automatic storing of Personal Preset or Last Status
settings.
– Automatic user menu time-out (menu switches back/
OFF automatically.
– Auto Volume levelling (AVL).
How to Activate
To activate SDM, use one of the following methods:
•Press the following key sequence on the remote control
transmitter: “062596” directly followed by the MENU button
(do not allow the display to time out between entries while
keying the sequence).
G_16860_030.ep
26010
Figure 5-3 SDM menu
Menu explanation:
•HHHHH: Are the operating hours (in decimal).
•AAAABCD-X.YY: See paragraph “Service Modes” ->
“General” -> “Software Identification, Version, and Cluster”
for the SW name definition.
•SDM: The character “SDM” to indicate that the TV set is in
Service mode.
•ERR: Shows all errors detected since the last time the
buffer was erased. Five errors possible.
•OP: Used to read-out the option bytes. See “Options” in the
Alignments section for a detailed description. Seven codes
are possible.
How to Navigate
As this mode is read only, there is not much to navigate. To
switch to other modes, use one of the following methods:
•Command MENU from the user remote will enter the
normal user menu (brightness, contrast, color, etc...) with
“SDM” OSD remaining, and pressing MENU key again will
return to the last status of SDM again.
•To prevent the OSD from interfering with measurements in
SDM, command “OSD” or “i+” (“STATUS” or “INFO” for
NAFTA and LATAM) from the user remote will toggle the
OSD “on/off” with “SDM” OSD remaining always “on”.
•Press the following key sequence on the remote control
transmitter: “062596” directly followed by the OSD/
STATUS/INFO/i+ button to switch to SAM (do not allow the
Page 14
EN 14LC7.2HU LB5.
Service Modes, Error Codes, and Fault Finding
display to time out between entries while keying the
sequence).
How to Exit
Switch the set to STANDBY by pressing the mains button on
the remote control transmitter or on the television set.
If you switch the television set “off” by removing the mains (i.e.,
unplugging the television), the television set will remain in SDM
when mains is re-applied, and the error buffer is not cleared.
The error buffer will only be cleared when the “clear” command
is used in the SAM menu.
Note:
•If the TV is switched “off” by a power interrupt while in SDM,
the TV will show up in the last status of SDM menu as soon
as the power is supplied again. The error buffer will not be
cleared.
•In case the set is in Factory mode by accident (with “F”
displayed on screen), by pressing and hold “VOL-” and
“CH-” together should leave Factory mode.
5.3.3Service Alignment Mode (SAM)
Purpose
•To change option settings.
•To display / clear the error code buffer.
•To perform alignments.
Specifications
•Operation hours counter (maximum five digits displayed).
•Software version, error codes, and option settings display.
•Error buffer clearing.
•Option settings.
•Software alignments (Tuner, White Tone, and Audio).
•NVM Editor.
•ComPair Mode switching.
•Set the screen mode to full screen (all contents on screen
are viewable).
How to Activate
To activate SAM, use one of the following methods:
•Press the following key sequence on the remote control
transmitter: “062596” directly followed by the OSD/STATUS/INFO/i+ button (it depends on region which
button is present on the RC). Do not allow the display to
time out between entries while keying the sequence.
•Or via ComPair.
After entering SAM, the following screen is visible, with SAM in
the upper right corner of the screen to indicate that the
television is in Service Alignment Mode.
LLLL L A AAABCD- X. YY
ERR XX XX XX XX XX
O P X X X X X X X X X X X XX X X X X X
C l e a r > Y e s
O p t i o n s >
T u n e r >
R G B A l i g n >
N V M E d i t o r >
C o m p a i r >
S W E V E N T S >
Figure 5-4 SAM menu
Menu explanation:
1. LLLLL. This represents the run timer. The run timer counts
normal operation hours, but does not count Stand-by
hours.
2. AAAABCD-X.YY. See paragraph “Service Modes” ->
“General” -> “Software Identification, Version, and Cluster”
for the SW name definition.
SAM
G_16860_031.eps
260107
3. SAM. Indication of the Service Alignment Mode.
4. ERR (ERRor buffer). Shows all errors detected since the
last time the buffer was erased. Five errors possible.
5. OP (Option Bytes). Used to read-out the option bytes. See
“Options” in the Alignments section for a detailed
description. Seven codes are possible.
6. Clear. Erases the contents of the error buffer. Select the
CLEAR menu item and press the MENU RIGHT key. The
content of the error buffer is cleared.
7. Options. Used to set the option bits. See “Options” in the
“Alignments” chapter for a detailed description.
8. Tuner. Used to align the tuner. See “Tuner” in the
“Alignments” chapter for a detailed description.
9. RGB Align. Used to align the White Tone. See “White
Tone” in the “Alignments” chapter for a detailed
description.
10. NVM Editor. Can be used to change the NVM data in the
television set. See also paragraph “Fault Finding and
Repair Tips” further on.
11. ComPaIr.
Can be used to switch the television to “In
Application Programming” mode (IAP), for software
uploading via ComPair. Read paragraph “Service Tools” > “ComPair”. Caution: When this mode is selected without
ComPair connected, the TV will be blocked. Remove the
AC power to reset the TV.
12. SW Events. Only to be used by development to monitor
SW behavior during stress test.
How to Navigate
•In the SAM menu, select menu items with the MENU UP/
DOWN keys on the remote control transmitter. The
selected item will be indicated. When not all menu items fit
on the screen, use the MENU UP/DOWN keys to display
the next / previous menu items.
•With the MENU LEFT/RIGHT keys, it is possible to:
– Activate the selected menu item.
– Change the value of the selected menu item.
– Activate the selected sub menu.
•When you press the MENU button twice while in top level
SAM, the set will switch to the normal user menu (with the
SAM mode still active in the background). To return to the
SAM menu press the MENU button.
•Command “OSD/i+” key from the user remote will toggle
the OSD “on/off” with “SAM” OSD remaining always “on”.
•Press the following key sequence on the remote control
transmitter: “062596” directly followed by the MENU button
to switch to SDM (do not allow the display to time out
between entries while keying the sequence).
How to Store SAM Settings
To store the settings changed in SAM mode (except the
OPTIONS settings), leave the top level SAM menu by using the
POWER button on the remote control transmitter or the
television set.
How to Exit
Switch the set to STANDBY by pressing the mains button on
the remote control transmitter or the television set.
Note:
•When the TV is switched “off” by a power interrupt while in
SAM, the TV will show up in “normal operation mode” as
soon as the power is supplied again. The error buffer will
not be cleared.
•In case the set is in Factory mode by accident (with “F”
displayed on screen), by pressing and hold “VOL-” and
“CH-” together should leave Factory mode.
5.3.4Customer Service Mode (CSM)
Purpose
The Customer Service Mode shows error codes and
information on the TV’s operation settings. A call centre can
instruct the customer (by telephone) to enter CSM in order to
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Service Modes, Error Codes, and Fault Finding
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7
EN 15LC7.2HU LB5.
identify the status of the set. This helps them to diagnose
problems and failures in the TV before making a service call.
The CSM is a read-only mode; therefore, modifications are not
possible in this mode.
Specifications
•Ignore “Service unfriendly modes”.
•Line number for every line (to make CSM language
independent).
•Set the screen mode to full screen (all contents on screen
are viewable).
•After leaving the Customer Service Mode, the original
settings are restored.
•Possibility to use “CH+” or “CH-” for channel surfing, or
enter the specific channel number on the RC.
How to Activate
To activate CSM, press the following key sequence on the
remote control transmitter: “123654” (do not allow the display
to time out between entries while keying the sequence).
Upon entering the Customer Service Mode, the following
screen will appear:
1 M O D E L : 3 2 P F L 5 5 2 2 D / 1
2 P R O D S / N : AG1A0712123456
3 S W I D : L C 7 1 E L 1 - 1 . x x
4 O P : X X XX X XX X XX X XX X X X X X X X X
5 C O D E S : X X X X X XX XX X
6 S S B : 3 1 39 1 27 12341
7 N V M : X X X X X X X X
8 F l a s h D a t a : X X . X X . X X . X X
9 L I F E T I M E R : L L L L L
1 0 T U N E R : W E A K / G O O D / S T R O N G
1 1 S Y S T E M : P A L / N T S C / S E C A M
1 2 S O U N D : M O N O / S T E R E O / N I C A M
1 3H D A U : Y E S / N O
1 4F O R M A T : X X X X X X X X
0
CS M
G_16860_032.ep
21020
Figure 5-5 CSM menu (example)
How to Exit
To exit CSM, use one of the following methods:
•Press the MENU button twice, or POWER button on the
remote control transmitter.
•Press the POWER button on the television set.
5.4Service Tools
5.4.1ComPair
Introduction
ComPair (Computer Aided Repair) is a Service tool for Philips
Consumer Electronics products. and offers the following:
1. ComPair helps you to quickly get an understanding on how
to repair the chassis in a short and effective way.
2. ComPair allows very detailed diagnostics and is therefore
capable of accurately indicating problem areas. You do not
have to know anything about I
yourself, because ComPair takes care of this.
3. ComPair speeds up the repair time since it can
automatically communicate with the chassis (when the uP
is working) and all repair information is directly available.
4. ComPair features TV software upgrade possibilities.
Specifications
ComPair consists of a Windows based fault finding program
and an interface box between PC and the (defective) product.
The (new) ComPair II interface box is connected to the PC via
an USB cable. For the TV chassis, the ComPair interface box
and the TV communicate via a bi-directional cable via the
service connector(s).
How to Connect
This is described in the ComPair chassis fault finding database.
TO TV
TO
TO
I2C SERVICE
CONNECTOR
UART SERVICE
CONNECTOR
UART SERVICE
CONNECTOR
2
C or UART commands
TO
Menu Explanation
1. MODEL. Type number, e.g. 32HF7965D/27. (*)
2. PROD S/N. Product serial no., e.g. SV1A0701000008. (*)
3. SW ID. Software cluster and version is displayed.
4. OP. Option code information.
5. CODES. Error buffer contents.
6. SSB. Indication of the SSB factory ID (= 12nc). (*)
7. NVM. The NVM software version no.
8. Flash Data. PQ (picture quality) and AQ (audio quality)
data version. This is a sub set of the main SW.
9. LIFE TIMER. Operating hours indication.
10. TUNER. Indicates the tuner signal condition: “Weak” when
signal falls below threshold value, “Medium” when signal is
at mid-range, and “Strong” when signal falls above
threshold value.
11. SYSTEM. Gives information about the video system of the
selected transmitter (PAL/SECAM/NTSC).
12. SOUND. Gives information about the audio system of the
selected transmitter (MONO/STEREO/NICAM).
13. HDAU. HDMI audio stream detection. “YES” means audio
stream detected. “NO” means no audio stream present.
Only displayed when HDMI source is selected.
14. FORMAT. Gives information about the video format of the
selected transmitter (480i/480p/720p/1080i).
15. FPGA FW ID. Software version of the 1080p full HD
module (when present).
16. Reserved.
17. Reserved.
18. Reserved.
(*) If an NVM IC is replaced or initialized, the Model Number,
Serial Number, and SSB Code Number must be re-written to
the NVM. ComPair will foresee in a possibility to do this.
ComPair II
RC in
Optional
Switch
PowerModeLink/
Activity
HDMI
I
2
C only
RC out
Multi
function
2
C
I
PC
ComPair II Developed by Philips Brugge
Optional power
5V DC
RS232 /UART
G_06532_036.eps
240807
Figure 5-6 ComPair II interface connection
Caution: It is compulsory to connect the TV to the PC as
shown in the picture above (with the ComPair interface in
between), as the ComPair interface acts as a level shifter. If
one connects the TV directly to the PC (via UART), ICs will be
blown!
How to Order
ComPair II order codes:
•ComPair II interface: 3122 785 91020.
•ComPair32 CD (update): 3122 785 60160.
•ComPair I
with chassis L01, A02, A10, EMx, TPM1.xA, etc...).
•ComPair I
2
C interface cable: 3122 785 90004 (to be used
2
C interface extension cable: 3139 131 03791 (to
be used with chassis L01, A02, A10, L04, LC4, LC7.1,
LC7.2).
•ComPair UART interface cable: 3122 785 90630 (to be
used with chassis LC4, EJ3, BJ2, BL2, BP2, ...).
Page 16
EN 16LC7.2HU LB5.
Service Modes, Error Codes, and Fault Finding
•ComPair RS232 cable: 3104 311 12742 (to be used with
chassis Q52x).
•ComPair I
9965 100 07325 (to be used with chassis LC7.5).
Note: For I
2
C interface cable (3.5 mm Jack-to-SVHS plug):
2
C it is compulsory to use this particular cable.
•ComPair UART interface cable (3.5 mm Jack-to-Jack):
3138 188 75051 (to be used with chassis LC7.5).
Note: For UART it is also allowed to use a standard “Jackto-Jack” cable.
Note: If you encounter any problems, contact your local
support desk.
5.4.2LVDS Tool
Support of the LVDS Tool has been discontinued.
5.5Error Codes
5.5.1Introduction
Error codes are required to indicate failures in the TV set. In
principle a unique error code is available for every:
•Activated protection.
•Failing I2C device.
•General I2C error.
•SDRAM failure.
The last five errors, stored in the NVM, are shown in the
Service menu’s. This is called the error buffer.
The error code buffer contains all errors detected since the last
time the buffer was erased. The buffer is written from left to
right. When an error occurs that is not yet in the error code
buffer, it is displayed at the left side and all other errors shift one
position to the right.
An error will be added to the buffer if this error differs from any
error in the buffer. The last found error is displayed on the left.
An error with a designated error code may never lead to a
deadlock situation. This means that it must always be
diagnosable (e.g. error buffer via OSD or blinking LED
procedure, ComPair to read from the NVM).
In case a failure identified by an error code automatically
results in other error codes (cause and effect), only the error
code of the MAIN failure is displayed.
Example: In case of a failure of the I2C bus (CAUSE), the error
code for a “General I2C failure” and “Protection errors” is
displayed. The error codes for the single devices (EFFECT) is
not displayed. All error codes are stored in the same error
buffer (TV’s NVM) except when the NVM itself is defective.
5.5.2How to Read the Error Buffer
You can read the error buffer in 3 ways:
•On screen via the SAM/SDM/CSM (if you have a picture).
Example:
– ERROR: 0 0 0 0 0: No errors detected
– ERROR: 6 0 0 0 0: Error code 6 is the last and only
detected error
– ERROR: 9 6 0 0 0: Error code 6 was detected first and
error code 9 is the last detected (newest) error
•Via the blinking LED procedure (when you have no
picture). See “The Blinking LED Procedure”.
•Via ComPair.
5.5.3Error Codes
In case of non-intermittent faults, write down the errors present
in the error buffer and clear the error buffer before you begin
the repair. This ensures that old error codes are no longer
present.
If possible, check the entire contents of the error buffer. In
some situations, an error code is only the result of another error
and not the actual cause of the problem (for example, a fault in
the protection detection circuitry can also lead to a protection).
Table 5-2 Error code overview
Error
1)
code
0No error.
1DC Protection of speakers.
2+12V protection error.12V missing or “low”.
3Reserved.
4General I2C error.Note 2
5Trident Video Processor
6I2C error while communicat ing
7I2C error while communicat ing
8I2C error while communicat ing
9I2C error communicating with
10SDRAM defective.7204
11I2 C error while communicating
12I2 C error while communicating
13DVB HW communication
14SDRAM defective.7205
15Reserved.
16Reserved.
17I2 C error while communicating
18I2 C error while communicating
19I2 C error while communication
DescriptionItem nr. Remarks
communication error.
with the NVM.
with the Tuner.
with the IF Demodulator.
the Sound Processor.
with the HDMI IC.
with the MOJO PNX8314.
error.
with the FPGA (AmbiLight
bolt-on).
with the i-Board processor.
with 1080p bolt-on module.
7202When Trident IC is
defective, error 10 and 14
might also be reported.
Trident communicates via
parallel bus, not via the I2C
bus. The I2C bus of Trident
is only used in ComPair
mode.
7315The TV will not start-up due
to critical data not available
from the NVM, but the LED
will blink the error code.
1101
7113
7411
7817
7G00If applicable
7F01,
If applicable
7K00,
7G00
If applicable
If applicable
If applicable
Notes
1. Some of the error codes reported are depending on the
option code configurations.
2. This error means: no I2C device is responding to the
particular I2C bus. Possible causes: SCL/SDA shorted to
GND, SCL shorted to SDA, or SCL/SDA open (at uP pin).
The internal bus of the Trident platform should not cause
the entire system to halt as such an error can be reported.
3. The following error codes which must be trigger the
blinking LED automatically once detected, due to the fact
these error may cause no display on the screen: Errors 1,
2, 3, 4, 5, 6 and 10.
5.5.4How to Clear the Error Buffer
The error code buffer is cleared in the following cases:
•By using the CLEAR command in the SAM menu:
– To enter SAM, press the following key sequence on the
remote control transmitter: “062596” directly followed
by the OSD/i+ button (do not allow the display to time
out between entries while keying the sequence).
– Make sure the menu item CLEAR is selected. Use the
MENU UP/DOWN buttons, if necessary.
– Press the MENU RIGHT button to clear the error
buffer. The text on the right side of the “CLEAR” line will
change from “CLEAR?” to “CLEARED”
•If the contents of the error buffer have not changed for 50
hours, the error buffer resets automatically.
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Service Modes, Error Codes, and Fault Finding
EN 17LC7.2HU LB5.
Note: If you exit SAM by disconnecting the mains from the
television set, the error buffer is not reset.
5.6The Blinking LED Procedure
5.6.1Introduction
The software is capable of identifying different kinds of errors.
Because it is possible that more than one error can occur over
time, an error buffer is available, which is capable of storing the
last five errors that occurred. This is useful if the OSD is not
working properly.
Errors can also be displayed by the blinking LED procedure.
The method is to repeatedly let the front LED pulse with as
many pulses as the error code number, followed by a period of
1.5 seconds in which the LED is “off”. Then this sequence is
repeated.
Example (1): error code 4 will result in four times the sequence
LED “on” for 0.25 seconds / LED “off” for 0.25 seconds. After
this sequence, the LED will be “off” for 1.5 seconds. Any RC5
command terminates the sequence. Error code LED blinking is
in red color.
Example (2): the content of the error buffer is “129600”
After entering SDM, the following occurs:
•1 long blink of 5 seconds to start the sequence,
•12 short blinks followed by a pause of 1.5 seconds,
•9 short blinks followed by a pause of 1.5 seconds,
•6 short blinks followed by a pause of 1.5 seconds,
•1 long blink of 1.5 seconds to finish the sequence,
•The sequence starts again with 12 short blinks.
5.6.2Displaying the Entire Error Buffer
Additionally, the entire error buffer is displayed when Service
Mode “SDM” is entered. In case the TV set is in protection or
Stand-by: The blinking LED procedure sequence (as in SDMmode in normal operation) must be triggered by the following
RC sequence: “MUTE” “062500” “OK”.
In order to avoid confusion with RC5 signal reception blinking,
this blinking procedure is terminated when a RC5 command is
received.
To erase the error buffer, the RC command “MUTE” “062599
“OK” can be used.
5.7Software Upgrading
In this chassis, two SW “stacks” are used:
•TV main SW (processor and processor NVM).
•Digital TV SW.
5.7.1TV Main SW Upgrade
For instructions on how to upgrade the TV Main software, refer
to ComPair.
5.7.2“Digital TV” Software Upgrade
5.8.1NVM Editor
In some cases, it can be convenient if one directly can change
the NVM contents. This can be done with the “NVM Editor” in
SAM mode. With this option, single bytes can be changed.
Caution:
•Do not change the NVM settings without
understanding the function of each setting, because
incorrect NVM settings may seriously hamper the
correct functioning of the TV set!
•Always write down the existing NVM settings, before
changing the settings. This will enable you to return to the
original settings, if the new settings turn out to be incorrect.
Table 5-3 NVM editor overview
HexDecDescription
.ADR0x000A10Existing value
.VAL0x00000New value
.StoreStore?
5.8.2Load Default NVM Values
It is possible to download default values automatically into the
NVM in case a blank NVM is placed or when the NVM first 20
address contents are “FF”. After the default values are
downloaded, it is possible to start-up and to start aligning the
TV set. To initiate a forced default download the following
action has to be performed:
1. Switch “off” the TV set with the mains cord disconnected
from the wall outlet (it does not matter if this is from “Standby” or “Off” situation).
2. Short-circuit the SDM jumpers on the SSB (keep short
circuited).
3. Press “P+” or “CH+” on the local keyboard (and keep it
pressed).
4. Reconnect the mains supply to the wall outlet.
5. Release the “P+” or “CH+” when the set is “on” or blue LED
is blinking.
When the downloading has completed successfully, the set
should be into Stand-by, i.e. red LED on.
Alternative method (1):
1. Go to SAM.
2. Select NVM Editor.
3. Select ADR (address) to 1 (dec).
4. Change the VAL (value) to 170 (dec).
5. Store the value.
6. Do a hard reset to make sure new default values took
place.
Alternative method (2):
It is also possible to upload the default values to the NVM with
ComPair in case the SW is changed, the NVM is replaced with
a new (empty) one, or when the NVM content is corrupted.
After replacing an EEPROM (or with a defective/no EEPROM),
default settings should be used to enable the set to start-up and
allow the Service Default Mode and Service Alignment Mode to
be accessed.
This is done automatically via OAD (Over the Air Download).
5.8Fault Finding and Repair Tips
Notes:
•It is assumed that the components are mounted correctly
with correct values and no bad solder joints.
•Before any fault finding actions, check if the correct options
are set.
5.8.3Start-up/Shut-down Flowcharts
Important note for DVB/ATSC sets:
•When you put a DVB/ATSC set into Stand-by mode with an RC, the set will go to “Semi Stand-by” mode for 5
minutes. This, to facilitate “Over the Air download” (OAD).
If there is no activity within these 5 minutes, the set will
switch to Stand-by mode. In “Semi Stand-by” mode, the
LCD backlight and Audio Amplifier are turned “off” but other
circuits still work as normal. The customer might think the
set is in Stand-by. However, in real Stand-by mode, only
Page 18
EN 18LC7.2HU LB5.
Service Modes, Error Codes, and Fault Finding
the uP and the NVM are alive and all other circuits are
switched “off”.
•If you press the mains switch at the local key board in a
DVB/ATSC set, the set will switch to Stand-by mode.
Start Up
160ms
InitCold Component:
1. Check SDM port.
Error 6 - NVM
[Protection]
Standby Normal Mode
(RED LED)
Port Assignment in STANDBY
Wait for RC key or
Wake up event
- If SDM pin = LOW and NVM first 20Byte =
0xFF, reload Software default NVM value.
2. Check Panel port.
- If Panel Pin = LOW and check slave address
0x65 = 0xA5, Enter Panel Mode.
On the next pages you will find start-up and shut-down
flowcharts, which might be helpful during fault finding.
Please note that some events are only related to PDP sets,
and therefore not applicable to this LCD chassis.
AC ON
+5VSTBY & +3V3STBY Available (1)
RENEAS POR by +3VSTBY (2)
STANDBYn = LOW
No
Last status is ON?
Yes
Read NVM completed.
STOP I²C activities.
LED = BLUE for Normal mode
LED = RED for Recording mode
BLOCK RC Key
M16C RST_H = HIGH
RST_HDMI = LOW
RST_AUD = LOW
RESET_n = LOW
LCD_PWR_ON = LOW
SDI PDP => CTRL_DISP1 = LOW
(1) +5VSTBY to be measured
at PDTC114ET (item 7322)
(2) to be measured at pin 4
of BD45275G (item 7312)
User wake up the sets
in DVB recording mode
LCD_PWR_ON = HIGH
(Same function as CTRL-DISP2)
SDI PDP => CTRL_DISP1 = LOW
20ms
1000ms to
1500ms
Wait for 20 ms
Switch ON LVDSSignal
Init. Warm Component
(For software)
Error 2
[Protection]
Notes:
---------
1. LC07 TV software only start communication with IBOZ once
receive the INT message from IBOZ.
For DVB Sets only (Semistandby)
Recording mode
SDI PDP => CTRL_DISP1 = HIGH
Recording Mode finished
Software Shutdown:
WP for NVM
Port Assignment in STANDBY
STANDBYn = LOW
Standby
Normal Mode
Wait for 100ms
Time out = 2000ms
Yes
500ms
100ms
Error 7
Error 8
Error 9
Error 11
1700ms
Error 3
[Protection]
STANDBYn = HIGH
(Same function as CTRL-DISP3)
Wait for 500ms
Is Power Down =
No
BL_ADJ = HIGH (100% Duty Cycle)
HIGH?
Yes
Wait for 100ms
M16C RST_H to LOW
RST_HDMI = HIGH
RST_AUD = HIGH
RESET_n = HIGH
Enable Power Down INT
Enable DC_PROT INT
Initialise Tuner
Initialise IF Demodulator, Afric
TDA9886T
Initialise Micronas
Mute Audio
Initialise HDMI, Sil9023
Initialise Trident CX
DPTVInit( )
Initialise FHP Panel
* For FHP PDP Sets only
Initialise Bolt-ON
* For iTV, 1080P, Ambi Light
Enable RC Key
DVB recording mode
For LCD:
BL_ON_OFF = HIGH
* BL_ADJ keep 100% for 3000ms
before dimming.
Blank Picture
Picture Mode Setup & Detection
unBlank Picture &
UnMute Audio
No
Error 5 - Trident
[Protection]
Error 10 – SDRAM 7204
[Protection]
Error 14 – SDRAM 7205
[Protection]
Error 17 – AmbiLight
Error 18 – iTV iFace
Error 19 – 1080P
End
For PDP:
3000ms delay
G_16860_070.eps
220207
Figure 5-7 Start-up flowchart
Page 19
Service Modes, Error Codes, and Fault Finding
EN 19LC7.2HU LB5.
SEMISTANDBY/ STANDBY
300ms
20ms
Start
Mute Audio
BL_ADJ stop dimming
(PWM duty cycle 100%)
BL_ON_OFF = LOW
Wait 300ms
Switch OFF LVDS
Wait 20ms
LCD_PWR_ON = LOW
LED = REDNo
For DVB Sets only (Semistandby)
Wait for 3000ms
Except power tact switch
SDI PDP => CTRL_DISP1 = HIGH
Off Air Downloading/ Recording Mode
IBOZ send shut down command
Software Shutdown:
Standby using
“power key”
Yes
LED = NO LED
for Standby soft mode
Disable Power Down INT &
DC_PROT_INT
BL_ADJ = LOW
(PWM duty cycle 0%)
WriteProtect for NVM
Port Assignment in STANDBY
Sets go to standby here
40ms
Total = 360ms
STANDBYn = LOW
Wait for 3000ms
End
Figure 5-8 Semi Stand-by/Stand-by flowchart
Blocking for the next start up to ensure
power supply discard properly.
G_16860_071.eps
220207
Page 20
EN 20LC7.2HU LB5.
Service Modes, Error Codes, and Fault Finding
Power Down INT:
AC OFF or Transient INT
Start
Notes:
1. Power Down INT will be based on fall edge triggering
2. +3V3STBY will stay for 15ms, software must perform
WriteProtect for NVM within 15ms.
Avoid false trigger
No
End
Poll the Power Down
INT for 5 times
Yes
Mute Audio & VIdeo
WriteProtect for NVM
STANDBYn = LOW
Wait 5000 ms
Re-start: Start up
End
DC_PROT INT
Avoid false trigger
No
End
Error 1
[Protection]
Start
is DC_PROT = LOW
for 3 sec?
Yes
Mute Audio & VIdeo
Log Error Code
WriteProtect for NVM
STANDBYn = LOW
End
G_16860_072.eps
220207
Figure 5-9 Power Down & DC_PROT flowchart
Page 21
Personal Notes:
Service Modes, Error Codes, and Fault Finding
EN 21LC7.2HU LB5.
E_06532_012.eps
131004
Page 22
EN 22LC7.2HU LB5.
Service Modes, Error Codes, and Fault Finding
Page 23
Block Diagrams, Test Point Overviews, and Waveforms
6.Block Diagrams, Test Point Overviews, and Waveforms
Wiring Diagram 26” & 32”
WIRING 26”- 32” LCD (STYLING ME7)
23LC7.2HU LB6.
CN2
DISPLAY SUPPLY
1. +24V
2. +24V
3. +2 4V
4. +24V
5. +24V
6. GND
7. GND
8. GN D
9. GND
10. GND
11. DIM
12. BL-ON
13. PWM
14. N.C.
CN3
DISPLAY SUPPLY
1. +24V
2. +24V
3. +2 4V
4. +24V
5. +24V
6. GND
7. GND
8. GN D
9. GND
10. GND
11. N.C.
12. N.C.
CN7
CONTROL:
1. BL-DIM
2. PG
3. BL-ON
4. GND
5. N.C.
6. PSON
7. N.C.
8. 12 V
INVERTER
CN6
CONTROL:
1. -12VA
2. +12VA
3. GN D
4. 5.2VS
5. 5.2VS
6. 5.2VS
7. GND
8. GN D.
9. GND
14P
CN2
LCD DISPLAY
(1004)
1205
10P
SI
1301
12P
1207
8P02
SYSTEM
INTERFACE
(1184)
8P
5P
1302
12P
1300
8H05
1108
1102
4P
6P
12P
CN3
INVERTER
7P
1306
KEYBOARD CONTROL
E
(1114)
8H03
HC
5P
8H08
4P
1209
(1182)
1204
1103
14P
iBOARD
8H07
8H04
8H01
8H09
8H10
8H13
1812
21P
7P
1M20
8H11
8M20
1901
1526
4P
4P
1735
1525
8P
5P
1619
3P
6P
1527
4P
4P
CN5
CN4
14P
CN2
12P
CN3
8316
MAIN SUPPLY
(1005)
ONLY USED
FOR LPL PANEL
8317
CN6
CN7
CN1
8H12
9P
8P
2P3
8C01
8P11
8735
9P
1C01
SSB
B
4P
CN5
5P
P1204
ATSC
MPEG4* PANEL
(1128)
LV DS
30P
8P
1P11
10P
1312
P5017PP201
8G51
3P
P600
30P
1G51
21P
RIGHT SPEAKER
(5200)
*MPEG4 ONLY FOR CHASSIS LC7.2HU_LB
INLET
8308
8191
8192(UK)
8735
8M20
LEFT SPEAKER
(5200)
7P
1M20
IR/LED/LIGHT
J
SENSOR
(1112)
H_16990_039.eps
3P
1M01
8M01
3P
1M01
211207
Page 24
Block Diagrams, Test Point Overviews, and Waveforms
Wiring Diagram 42”
24LC7.2HU LB6.
WIRING 42” LCD
14P
CN2
(STYLING ME7)
4P
X405
4P
X411
8316
MAIN SUPPLY
(1005)
9P
X412
ONLY USED
FOR LPL PANEL
8P
X406
12P
X404
8317
14P
X403
8H12
8P11
8C01
B
LCD DISPLAY
(1004)
8735
9P
SSB
1C01
8P
1P11
LV DS
30P
8G51
30P
1G51
8H04
8H10
1M20
7P
8M20
4P
1735
8H03
HC
5P
4P
1209
(1182)
1204
1103
14P
iBOARD
1205
10P
12P
1207
8H02
1102
6P
12P
1108
4P
CN3
INVERTER
RIGHT SPEAKER
(5200)
CN1
2P3
INLET
5P
4P
1525
4P
CN5
5P
ATSC
P1204
MPEG4* PANEL
(1128)
10P
1312
3P
P5017PP201
P600
21P
8H01
8H09
8H13
1812
21P
8H11
1901
1526
8H05
8H07
3P
1527
6P
8P
1619
8H08
SI
1301
SYSTEM
INTERFACE
(1184)
8P
5P
1302
12P
1300
INVERTER
7P
1306
(1114)
KEYBOARD CONTROL
E
8308
8191
8192(UK)
8735
8M20
LEFT SPEAKER
(5200)
7P
1M20
IR/LED/LIGHT
J
SENSOR
(1112)
3P
1M01
8M01
3P
1M01
*MPEG4 ONLY FOR CHASSIS LC7.2HU_LB
H_16990_041.eps
211207
Page 25
Block Diagrams, Test Point Overviews, and Waveforms
Block Diagram Video
VIDEO
ATSC/MPEG4 PANEL
MPEG4 ONLY FOR CHASSIS LC7.2HU_LB
TUNER
SI
SYSTEM INTERFACE
1305
25
Y_OUT
24
Pb_OUT
23
Pr_OUT
17
18
INTEGRATED
CARD SLOT
19
7300
20
31
32
22
11
13
EF
SC2_Y_CVBS_IN
CVBSterr
HSYNC_OUT
HSYNC_OUT
1
1
1306P501
SC1_B_IN
SC1_G_IN
SC1_R_IN
SC1_FBL_IN
SC2_C_IN
P6001812
1
3
4
6
7
9
10
12
19
2
332
B06C
1
3
4
6
7
9
10
12
19
B06B
13011526
1
1
2
2
3
3
4
4
13021525
1
1
2
2
HDMI
1
HDMI 1
182
19
IO - SCART 1 & 2
1810
1
3
4
6
7
9
10
12
19
7860
HDMI_HOTPLUG_RESET
7814
HDMI_HOTPLUG_RESET
SC2_Y_CVBS_IN_ITV
SC2_C_IN_ITV
RX2+B
RX2-B
RX1+B
RX1-B
RX0+B
RX0-B
RXC+B
RXC-B
RX2+A
RX2-A
RX1+A
RX1-A
RX0+A
RX0-A
RXC+A
RXC-A
B04A
B04A
3552
7817
SII9025CTU
71
+
70
-
67
+
66
-
63
+
62
-
59
+
58
-
52
+
51
-
48
+
47
-
44
+
43
-
40
+
39
-
R1X2
R1X1
R1X0
R1XC
R0X2
R0X1
R0X0
R0XC
ADC
HDMI
(MAIN)
3529
ODCK
DE
HSYNC
VSYNC
25LC7.2HU LB6.
HDMI_VCLK
121
HDMI_DE
1
2
3
SC1_B_IN
SC1_G_IN
SC1_R_IN
SC1_FBL_IN
SC2_Y_CVBS_IN
SC2_C_IN
HDMI_H
HDMI_V
HDMI_Cb(0-7)
HDMI_Y(0-7)
HDMI_Cr(0-7)
B04B
VIDEO PROCESSOR
197
181
189
173
190
23
DP-CLK
6
DP_DE_FLD
4
DP_HS
5
DP_VS
DIN_PORTD
7202
SVP CX32-LF
PB_B2
Y_G2
PR_R2
FB1
PR_R3
70
FS2
ANALOG
(24BIT)
MUX
VIDEO
PROCESSOR
XTALI
XTALO
205
204
1201
14M31
HC02
HC01
IBOARD
IBOARD
RJ45
CONNECTOR
10
15
5
1
6
11
VGA
CONNECTOR
1107
1101
11
8
7
8
7
12071300
3
VSYNC
4
HSYNC
8
CVBSterr
5102
1
5103
9
5104
2
5105
13
5106
14
HD_PR_IN_ITV
11
HD_Y_IN_ITV
HD_PB_IN_ITV
VGA_H
VGA_V
B04A
12051312
10
10
B06D
11081901
1
1
B06A
11021619
1
1
2
2
3
3
5
5
6
6
MICROPROCESSOR
SC1_CVBS_RF_OUT
HEADPHONE AMP & MUTING
SC2_CVBS_MON_OUT_ITV
YPBPR & REAR IO
HD_PR_IN_ITV
HD_Y_IN_ITV
HD_PB_IN_ITV
1615
Pr
Y
Pb
1601-2
VIDEO
1601-1
1
3
5
S VIDEO
4
2
3554
3555
3618
7503
EF
7500
7204
IS42S16400D-6TL
3537
3521
EF
3617
3619
SC1_RF_OUT_CVBS
SC2_CVBS_MON_OUT
VGA_H
VGA_V
HD_Pr_IN
HD_Y_IN
HD_Pb_IN
FRONT_Y_CVBS
FRONT_C
163
CVBS_OUT1
DQ(0-31)
MEMORY
162
CVBS_OUT2
7211
2
3
1
4
158
AIN_HS
AIN_VS
159
5
8
9
6
188
180
196
182
192
PR_R1
Y_G1
PB_B3
Y_G3
C
8-BIT
SINGLE
LVD S TX
TA1
TB1
TC1
TCLK1
TD1
CX_MA
51
50
49
48
45
44
43
42
41
40
(0-11)
(0-15)
(0-11)
(16-31)
TXCLKn
TXCLKp
TXAn
TXAp
TXBn
TXBp
TXCn
TXCp
TXDn
TXDp
DRAM
1Mx16x4
7205
IS42S16400D-6TL
DRAM
1Mx16x4
1210
1211
1212
1213
1214
TXAn1
TXAp1
TXBn1
TXBp1
TXCn1
TXCp1
TXCLKn1
TXCLKp1
TXDn1
TXDp1
VDISP
BOLT_ON_SCL
BOLT_ON_SDA
1G51
1
3
5
7
2
4
6
8
12
14
18
20
24
26
27
29
LVD S
CONNECTOR
TO DISPLAY
H_16990_042.eps
211207
Page 26
Block Diagrams, Test Point Overviews, and Waveforms
Block Diagram Audio
AUDIO
B06C
HDMI
1
HDMI 1
1
1
P6001812
TUNER
SI
SYSTEM
INTERFACE
1305
27
28
29
30
INTEGRATED
CARD SLOT
B06A
YPBPR & REAR IO
RXxxA
182
19
RXxxB
21
21
MPEG4 PANEL
MPEG4 ONLY FOR
CHASSIS LC7.2HU_LB
SC1_AUDIO _OUT_R
SC1_AUDIO _OUT_L
AUDIO
EXT3
L/R IN
7817
SII9025CTU
+
-
+
-
+
-
+
-
ATSC
1306P501
RX2
RX1
RX0
RXC
576
1603
HDMI
SCK
WS
SD0
MUTE
P2011527
1
2
6
SC2_AUDIO_IN_R
SC2_AUDIO_IN_L
86
HDMI_I2S_SCK
85
HDNI_I2S_WS
84
HDMI_I2S_SD
77
B06B
1
2
7810
UDA1334ATS/N2
1
BCK
2
WS
3
DATAI
8
MUTE
I0 - SCART 1 & 2
SC2_AUDIO _OUT_R
SC1_AUDIO _OUT_L
13011526
7
N.C.
6
N.C.
13021525
7
6
AUDIO
7
6
7
6
DAC
14
VOUTL
16
VOUTR
SC2_AUDIO _MUTE_R
SC2_AUDIO _MUTE_L
SC1_AUDIO _MUTE_R
SC1_AUDIO _OUT_R
SC1_AUDIO _OUT_L
SC1_AUDIO _MUTE_L
HDMI_AUDIO_IN_L
HDMI_AUDIO_IN_R
SC2_AUDIO_IN_R
SC2_AUDIO_IN_L
SIDE_AUDIO_IN_L
SIDE_AUDIO_IN_R
B06D
B06D
B06D
B06D
26LC7.2HU LB6.
B04C
AUDIO PROCESSOR
7411
MSP4450P-VK-E8 000 Y
57
SC5-IN-L
58
SC5-IN-R
33
SC2-OUT-R
34
SC2-OUT-L
67
XTALIN
68
XTALOUT
1411
18M432
36
SC1-OUT-R
SC1-OUT-L
37
53
SC2-IN-R
52
SC2-IN-L
48
SC4-IN-L
49
SC4-IN-R
SOUND
PROCESSOR
DACM-L
DACM-R
SUPPLY
DACA-L
DACA-R
B07
27
26
12
13
39
38
40
B06D
HP_AUDIO_OUT_L
24
HP_AUDIO_OUT_R
23
AUDIO
AUDIO-LS_L
AUDIO-LS_R
+5V_D
+8V
+5V_AUD
HEADPHONE AMP & MUTING
POWER_DOWN
B04A
B04A
B04A
B04A
STANDBY
MUTEn
ANTI_PLOP
CONTROL
HC01
19011108
1
1
2
2
B04A
MUTING
IBOARD
HP_AUDIO_OUT_L
HP_AUDIO_OUT_R
STANDBYn
ENGAGE
SC1_AUDIO _MUTE_R
SC1_AUDIO _MUTE_L
SC2_AUDIO _MUTE_R
SC2_AUDIO _MUTE_L
3
18
7A01
9
1
6
5
B04A
B06B
TDA8932T/N1
AMPLIFIER
3A03
3A11
3A19
3A26
7109
TDA1517ATW/N1
POWER
AMPLIFIER
IN1+
IN2-
OUT1A
OUT1B
CLASS D
POWER
DC_PROT
8
9
5A03
27
5A04
22
7A05÷7A07
DC-DETECTION
5107
1100
4
EXTERNAL
SPEAKER
1735
1
1
LEFT
2
3
4
SPEAKER
RIGHT
SPEAKER
EXT4
AUDI O
L/R IN
1615
COMP_AUDIO_IN_L
COMP_AUDIO_IN_R
50
51
SC3-IN-L
SC3-IN-R
H_16990_044.eps
211207
Page 27
Block Diagrams, Test Point Overviews, and Waveforms
Block Diagram Control & Clock Signals
CONTROL & CLOCK SIGNALS
B04B
VIDEO PROCESSOR
B06C
HDMI
1
HDMI
CONN.
182
19
TO
ATSC/MPEG4*
PAN E L
RXxxA
RXxxB
7204
IS42S16400D-6TL
DRAM
1Mx16x4
37
38
7205
IS42S16400D-6TL
DRAM
1Mx16x4
37
38
7817
SII9025CTU
+
-
+
-
121
R0
R1
102
DQ(0-31)
CX_MA(0-11)
CX_CLKE
CX_MCLK
HDMI_CCLK
HDMI_Cb(0-7)
HDMI_Y(0-7)
HDMI_Cr(0-7)
7202
SVP CX32-LF
PROCESSOR
112
111
23
VIDEO
27LC7.2HU LB6.
1G51
TXCLKn
43
TXCLKP
42
7203
55
61
62
63
84
86
56
7206
CONTROL
B04A
MICROPROCESSOR
AD(0-7)
A(0-7)
7310
M29W800DT
EPROM
1Mx8
512Kx16
28
11
+3V3_STBY
26
12
5
RST
ONLY FOR LCD
7312
BD45275G
VOUT
2,3
AD(0-7)
A(0-19)
CE
CPU_RST
4
(3V3)
CS
WR
RD
ALE_EMU
RST_H
INT
TXCLKn1
TXCLKP1
BL_ADJUST
7311
M30300SAGP
48
10
PROCESSOR
45
44
42
38
4
17
36
MICRO
18
TO DISPLAY
20
(LVDS)
B02
77
76
99
3
13
1301
10M
11
9
8
74
75
72
78
89
HDMI_HOTPLUG_RESET
88
CTRL_DISP1_up
CTRL_DISP4_up
LCD_PWR_ON
STANDBYn
7322
STANDBY
REMOTE
CPU_RST
ANTI_PLOP
BL_ON_OFF
POWER_DOWN
RST_AUD
ITV_SPI_CLK
ITV_SPI_DATA_IN
MUTEn
B04B
B04B
B04B
B04B
B02 B06D
B06D
B02
B6D
B06D
B06C
B04C
B07
1312
9
7
8
6
5
TO 1205
HC02
IBOARDPANEL
E
KEYBOARD CONTROL
CHANNEL +
CHANNEL -
MENU
VOLUME VOLUME +
ON / OFF
J
IR/LED/LIGHT-SENSOR
+5V2-STBY
+5V2-STBY
+5V2_STBY
3010
6010
6011
1011
1012
101
1014
1015
1016
7010
LED1
BLEU
LED2
RED
3
3012
3013
IR
SENSOR
7011
7012
*MPEG4 ONLY FOR CHASSIS LC7.2HU_LB
1M01
KEYBOARD
1M01
1M20
LED1
LED2
RC
N.C.
2
HC01
2
1103
7
14
613
411
310
18
IBOARD
LED1_OUT
LED2-OUT
RC_IR
7209
UPSD3333D
1
28
CONTROL
34
MCU
35
LIGHT_SENSOR
KEYB
IR_IN_TV
LED1
LED2
1103
7
66
44
33
11
1M20
7
B06B
B06B
B07
B06C
SC1_STATU S
SC2_STATU S
DC_PROT
HDMI_INT
KEYB
LED1
LED2
REMOTE
LIGHT_SENSOR
104
91
90
71
100
E_PAGE
7315
M24C64-WMN6P
EEPROM
7
8Kx8
93
95
87
18
2
19
23
21
3361
25
DCC_RESET
+3V3_STBY
3366
SAW_SW
DVB _SW
4301
SDM
B06C
B03A
B03A
H_16990_047.eps
211207
Page 28
Block Diagrams, Test Point Overviews, and Waveforms
SRP (Service Reference Protocol) is a software tool that creates a list with all references to signal lines. The list contains
references to the signals within all schematics of a PWB. It replaces the text references currently printed next to the signal
names in the schematics. These printed references are created manually and are therefore not guaranteed to be 100%
correct. In addition, in the current crowded schematics there is often none or very little place for these references.
Some of the PW
reference list for a schematic, or there will be printed references in the schematic.
1.2. Non-SRP Schematics
There are several different signals available in a schematic:
1.2.1.Power Supply Lines
All power supply lines are available in the supply line overview (see chapter 6). In the schematics (see chapter 7) is not
indicated where supplies are coming from or going to.
It is however indicated if a supply is incoming (created elsewhere), or outgoing (created or adapted in the current schematic).
Outgoing Incoming
1.2.2. Normal Signals
For normal signals, a schematic reference (e.g. B14b) is placed next to the signals.
B14b
1.2.3. Grounds
For normal and special grounds (e.g. GNDHOT or GND3V3 etc.), nothing is indicated.
1.3. SRP Schematics
SRP is a tool, which automatically creates a list with signal references, indicating on which schematic the signals are used.
A reference is created for all signals indicated with an SRP symbol, these symbols are:
namename
namename
name
name
Remarks:
• When there is a black dot on the "signal direction arrow" it is an SRP symbol, so there will be a reference to the signal
name in the SRP list.
• All references to normal grounds (Ground symbols without additional text) are not listed in the reference list, this to keep
it concise.
• Signals that are not used in multiple schematics, but only once or several times in the same schematic, are included
in the SRP reference list, but only with one reference.
Additional Tip:
When using the PDF service manual file, you can very easily search for signal names and follow the signal over all the
schematics. In Adobe PDF reader:
• Select the signal name you want to search for, with the "Select text" tool.
• Copy and paste the signal name in the "Search PDF" tool.
• Search for all occurrences of the signal name.
• Now you can quickly jump between the different occurrences and follow the signal over all schematics. It is advised to
"zoom in" to e.g. 150% to see clearly, which text is selected. Then you can zoom out, to get an overview of the complete
schematic.
PS. It is recommended to use at least Adobe PDF (reader) version 6.x, due to better search possibilities in this version.
3104 313 6261.1
B schematics will use SRP while others will still use the manual references. Either there will be an SRP
+5V+5V
signal_name
+5V+5V
namename
Bi-directional line (e.g. SDA) into a wire tree.
Signal line into a wire tree, its direction depends on the circuit (e.g. ingoing for PDP, outgoing for LCD sets).
Circuit Diagrams and PWB Layouts
Power supply line.
Stand alone signal or switching line (used as less as possible).
Note: Figures below can deviate slightly from the actual
situation, due to the different set executions.
General: The Service Default Mode (SDM) and Service
Alignment Mode (SAM) are described in chapter 5. Menu
navigation is done with the CURSOR UP, DOWN, LEFT or
RIGHT keys of the remote control transmitter.
8.1General Alignment Conditions
Perform all electrical adjustments under the following
conditions:
•Power supply voltage (depends on region):
– AP-NTSC: 120 V
– AP-PAL-multi: 120 - 230 V
– EU: 230 V
AC
– LATAM-NTSC: 120 - 230 V
– US: 120 V
AC
or 230 VAC / 50 Hz (± 10%).
AC
/ 50 Hz (± 10%).
AC
/ 50 Hz (± 10%).
/ 50 Hz (± 10%).
AC
/ 60 Hz (± 10%).
•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.
8.2Hardware Alignments
There are no hardware alignments foreseen for this chassis,
but below find an overview of the most important DC voltages
on the SSB. These can be used for checking proper functioning
of the DC/DC converters.
DescriptionTest Point Specifications (V)Diagram
Min. Typ. Max.
+AUDIO_POWER FB2111.40 12.00 12.60 B02_DC-DC
-AUDIO_POWER FB23-11.40 -12.00 -12.60 B02_DC-DC
+12V_DISPFB3411.40 12.00 12.60 B02_DC-DC
+8VF4017.60 8.00 8.40 B04C_Audio Proc.
+5V_STANDBYFB274.94 5.20 5.46 B02_DC-DC
+5V_SWFB164.93 5.19 5.45 B02_DC-DC
+5V_DI4114.75 5.00 5.25 B04C_Audio Proc.
+5V_AUDI4104.75 5.00 5.25 B04C_Audio Proc.
+5V_TUNI1154.75 5.00 5.25 B03_Tuner IF
+3V3_STBYFB133.10 3.30 3.50 B02_DC-DC
+3V3_SWFB173.13.33.5B02_DC-DC
+1V8S_SWFB111.70 1.80 1.90 B02_DC-DC
VDISPF21011.40 12.00 12.60 B04B_Video proc.
8.3Software Alignments
With the software alignments of the Service Alignment Mode
(SAM) the Tuner and RGB settings can be aligned.
To store the data: Use the RC button “MENU” to switch to the
main menu and next, switch to “Stand-by” mode.
8.3.1Tuner Adjustment (RF AGC Take Over Point)
Purpose: To keep the tuner output signal constant as the input
signal amplitude varies.
For the tuner no alignment is necessary, as the AGC alignment
is done automatically (standard value: “15”), even during
analogue reception.
8.3.2RGB Alignment
Before alignment, choose “TV MENU” -> “PICTURE” and set:
•“BRIGHTNESS” to “50”.
•“COLOR” to “50”.
•“CONTRAST” to “100”.
White Tone Alignment:
•Activate SAM.
•Select “RGB Align.” -> “WHITE TONE” and choose a color
temperature.
•Use a 100% white screen as input signal and set the
following values:
– All “White point” values initial to “256”.
– All “BlackL Offset” values to “0”.
In case you have a color analyzer:
•Measure with a calibrated (phosphor- independent) color
analyzer (e.g. Minolta CA-210) in the centre of the screen.
Consequently, the measurement needs to be done in a
dark environment.
•Adjust the correct x,y coordinates (while holding one of the
White point registers R, G or B on “256”) by means of
decreasing the value of one or two other white points to the
correct x,y coordinates (see table “White D alignment
values”). Tolerance: dx: ± 0.004, dy: ± 0.004.
•Repeat this step for the other color Temperatures that need
to be aligned.
•When finished return to the SAM root menu and press
STANDBY on the RC to store the aligned values to the
NVM.
Page 68
EN 68LC7.2HU LB8.
Alignments
Table 8-1 White D alignment values
ValueCool (11000 K)Normal (9000 K)Warm (6500 K)
x0.2780.2890.314
y0.2780.2910.319
If you do not have a color analyzer, you can use the default
values. This is the next best solution. The default values are
average values coming from production (statistics).
•Set the RED, GREEN and BLUE default values per
temperature according to the values in the “Tint settings”
table.
•When finished return to the SAM root menu and press
STANDBY on the RC to store the aligned values to the
NVM.
Table 8-2 Tint settings
Color Temp.RGB
Cool243256249
Normal251256220
Warm256241189
(*) This data was not available at the time of writing, but for
default settings use the column on the right.
Black Level Offset Alignment
•Activate SAM.
•Select “RGB Align.” -> “BLACKL OFFSET” and choose a
color.
•Set all “BLACKL OFFSET” values to “0”.
•When finished return to the SAM root menu and press
STANDBY on the RC to store the aligned values to the
NVM.
8.3.3Grey Scale Adjustment
TV (YPbPr) Gray Scale Adjustment
Input Requirements
•YPbPr input signal, with 8 levels Gray scale pattern,
•E.g. Quantum Data 802: format = 720p60
(1280 × 720p@60 Hz), pattern = Gray 8.
•EXT4.
Alignment Method
•Switch to TV mode,
•Press the MUTE button on RC,
•Set SMART PICTURE to SOFT mode,
•Activate the auto alignment by pressing RC key-sequence:
“OSD - MUTE - MUTE - MUTE - OSD - MENU - OSD” *
Expected Results
Visual:
•Check for correct 8 Gray levels.
PC (RGB) Gray Scale Adjustment
Input Requirements
•PC input signal, with 64 levels Grey scale pattern,
•E.g. Quantum Data 802: Format = 81: DMT1060
(1024 × 768 @ 60 Hz), pattern = Grey 64.
•PC input at D-sub VGA connector.
Alignment Method
•Switch to PC mode,
•Press the MUTE button on RC,
•Set BRIGHTNESS & CONTRAST to nominal “50”,
Activate auto alignment by pressing RC key-sequence:
“OSD - MUTE - MUTE - MUTE - OSD - MENU - OSD” *
Expected Results
Visual:
•Check for correct 64 Gray levels.
Note *: The “OSD” button naming can differ in the regions, is
also named “STATUS”, “INFO”, or “i+”
Page 69
8.4Setting the Correct iTV Mode
If the i-Board is directly replaced by a new off-the-shelf module
(already programmed with platform software), the correct iTV
model still must be programmed via below sequences to get to
the correct model type with its I/O configurations.
1. Put the iTV remote control (e.g. RC2573/10) in “setup”
mode (be sure that the TV is in “iTV-mode” - see
chapter 5).
2. Push a number on the remote control to switch “On” the TV.
3. Push the “Recall” button.
4. Check the model number, listed in line 05.
If it is correct (acc. to table below), the setting is done.If the
number is incorrect, continue with the next point.
5. Enter “042420”, immediately followed by “M” (Menu) key.
You now enter SDM.
6. Select and activate NVM EDIT mode.
7. Enter address “0022” (hex).
8. Push the “Arrow Down” button to activate the VAL (Value)
line.
9. Read the diversity code from the Diversity table below that
matches the TV set type you are adjusting. Enter this (hex)
number on the VAL (Value) line.
10. Select STORE to put the new value in the NVM.
11. Push the POWER button to switch “Off” the TV set.
12. Pull the mains plug.
13. Reconnect the mains plug after a few seconds.
14. The new setting is now active.
Alignments
EN 69LC7.2HU LB8.
Table 8-3 Diversity table
Diversity Storage Byte
ModelAddress (hex) Diversity code (hex)
32HF7965D/270x3535
8.4.1Required Software Versions
Be aware that the software used in these iTV sets is NOT
similar to the software in Mainstream LCD-TVs.
Ensure that the latest iTV software is used in these sets
(available on the Philips Service web site).
Page 70
EN 70LC7.2HU LB8.
Alignments
8.5Option Settings
8.5.1Introduction
The microprocessor communicates with a large number of I
ICs in the set. To ensure good communication and to make
digital diagnosis possible, the microprocessor has to know
which ICs to address. The presence/absence of these specific
ICs (or functions) is made known by the option codes.
Notes:
•After changing the option(s), save them with the STORE
command.
•The new option setting becomes active after the TV is
switched “off” and “on” again with the mains switch (the
EAROM is then read again).
8.5.2How To Set Option Codes
When the NVM is replaced, all options will require resetting. To
be certain that the factory settings are reproduced exactly, you
must set all option numbers. You can find the correct option
numbers in table “Option Codes OP1...OP7” below.
Table 8-4 Option and display code overview
Sets 12NCSets Type
86700003411532HF7965D/27LPL: LC320W01-SL0646
Display Type
CMO: V315B1-L0569
How to Change Options Codes
An option code (or “option byte”) represents eight different
options (bits). When you change these numbers directly, you
can set all options very quickly. All options are controlled via
2
C
seven option bytes (OP1... OP7).
Activate SAM and select “Options”. Now you can select the
option byte (OP1.. OP7) with the CURSOR UP/ DOWN keys,
and enter the new 3 digit (decimal) value. For the correct
factory default settings, see the next table “Option codes
OP1...OP7“. For more detailed information, see the second
table “Option codes at bit level“. If an option is set (value “1”), it
represents a certain decimal value.
When all the correct options (bits) are set, the sum of the
decimal values of each Option Byte (OP) will give the option
code.
Display Code
(Dec)
1234567
003023010223009000001AUO: T315XW02 VD91
Option Byte (Dec)
Group 1Group 2
Page 71
Alignments
EN 71LC7.2HU LB8.
Option Bit Overview
Below find an overview of the Option Codes on bit level.
Table 8-5 Option codes at bit level (OP1-OP7)
Option Byte & BitDec. ValueOption NameDescription
Byte OP1
Bit 7 (MSB)128ReservedNot Used (Reserved)
Bit 664CHINAON = SW is for CHINA only
Bit 532DTV_CHINAON = DTV_CHINA will be available (Re-
Bit 416DTV_EUON = DTV will be available
Bit 38UK_PNPON = UK PNP is available
Bit 24VIRGIN_MODEON = Virgin Mode (PNP) is available
Bit 12ACION = ACI is available
Bit 0 (LSB)1ATSON = ATS is available
Byte OP2
Bit 7 (MSB)1281080PON = 1080p is available
Bit 664LIGHT_SENSORON = Light Sensor is available
Bit 532AMBILIGHT ON = Ambilight Feature will be available
Bit 416BACKLIGHT_DIMMINGON = Backlight Dimming is available
Bit 38HUEON = Hue is available
Bit 242D3DCFON = 3D Comb Filter is available
Bit 12WSSBON = WSS is available
Bit 0 (LSB)1WIDE_SCREENON = TV is 16x9 set
Byte OP3
Bit 7 (MSB)128CVI2ON=CVI1 (YPbPr)
Bit 664ReservedNot Used (Reserved)
Bit 532ReservedNot Used (Reserved)
Bit 416VCHIPON = VChip is available
Bit 38VIDEO_TEXTON = Video-TXT is available
Bit 24STEREO_DBXON = Stereo DBX detection is available
Bit 12STEREO_NICAM_2CSON = Stereo NICAM 2CS detection is availa-
Bit 0 (LSB)1LIP_SYNCON = Lip Sync is available
Byte OP4
Bit 7 (MSB)128HDMI2 ON = HDMI2 is available
Bit 664HDMI1 ON = HDMI1 is available
Bit 532VGA ON = VGA is available
Bit 416SVHS3ON = SVHS3 is available
Bit 38AV3ON = AV3 is available
Bit 24CVION = CVI is available
Bit 12SVHS2ON = SVHS2 is available
Bit 0 (LSB)1AV2ON = AV2 is available
Byte OP5
Bit 7 (MSB)128NVM_CHECKON = NVM (range) checking is available
Bit 664ReservedNot Used (Reserved)
Bit 532ReservedNot Used (Reserved)
Bit 416MP_ALIGNON = Using multi-point alignment for Gamma
Bit 38SYS_RECVRYON = System Recovery is available
OFF = SW is for Non-China AP cluster
served)
OFF = DTV_CHINA will not be available
OFF = DTV will not be available
OFF = UK PNP is not available
OFF = Virgin Mode (PNP) is not available
OFF = ACI is not available
OFF = ATS is not available
OFF = 1080p is not available
OFF = Light Sensor is not available
OFF = Ambilight Feature will not be available
OFF = Backlight Dimming is not available
OFF = Hue is not available
OFF = 2D Comb Filter is available
OFF = WSS is not available
OFF = TV is 4x3 set
(For ROW)
OFF = VChip is not available
OFF = Video-TXT is not available
(LATAM)
OFF = Stereo DBX detection is not available
ble (EU/AP/China)
OFF = Stereo NICAM 2CS detection is not
available
OFF = Lip Sync is not available
OFF = HDMI2 is not available
OFF = HDMI1 is not available
OFF = VGA is not available
OFF = SVHS3 is not available
OFF = AV3 is not available
OFF = CVI is not available
OFF = SVHS2 is not available
OFF = AV2 is not available
OFF = NVM (range) checking is not available
& White Point
OFF = Using old way for Gamma (pre-defined) & WP alignment
OFF = System Recovery is not available
Page 72
EN 72LC7.2HU LB8.
Option Byte & BitDec. ValueOption NameDescription
Bit 24SL_WIREDON = BDS Smart Loader Wired is available
Bit 12HOTELON = Hotel/BDS is available
Bit 0 (LSB)1SS_DEMOON = Split Screen Demo is available
Byte OP6
Bit 7 (MSB)128ReservedNot Used (Reserved)
Bit 664ReservedNot Used (Reserved)
Bit 532ReservedNot Used (Reserved)
Bit 416ReservedNot Used (Reserved)
Bit 38TUNER PROFILE0 = ATV_EU_PHILIPS UV1318S/AIH-3
Bit 24
Bit 12
Bit 0 (LSB)1
Byte OP7
Bit 7 (MSB)128ReservedNot Used (Reserved)
Bit 664ReservedNot Used (Reserved)
Bit 532ReservedNot Used (Reserved)
Bit 416CABINET PROFILE0 = Cabinet_Profile_26_LCD_ME7
Bit 38
Bit 24
Bit 12
Bit 0 (LSB)1
Alignments
OFF = BDS Smart Loader Wired is not available
OFF = Hotel/BDS is not available
OFF = Split Screen is not available
1 = ATV_EU_Panasonic EN57K28G3F
2 = DTV_EU_PHILIPS TD1316AF/IHP-2
4 = ATV_AP_PHILIPS UV1316E/AIH-4
5 = ATV_AP_Tuner2 (Reserved)
6 = ATV_CHINA_ALPS TEDE9-286B
7 = ATV_CHINA_Tuner2 (Reserved)
8 = ATV_LATAM_PHILIPS UV1338/AIH-4
9 = ATV_LATAM_Tuner2 (Reserved)
10 = DTV_CHINA_Tuner1 (Reserved)
11 = DTV_CHINA_Tuner2 (Reserved)
12 = Not Used (Reserved)
13 = Not Used (Reserved)
14 = Not Used (Reserved)
15 = Not Used (Reserved)
The Philips Wireless Smart-Loader is an installation tool
especially designed for easy and fast installation of Philips
Institutional TV's. The Wireless Smart-Loader 22AV1120/00 is
compatible with the Wired Smart-Loader version 22AV1015/
01.
Instruction for use
Make sure that the 3 R6/AA sized batteries are placed correctly
in the backside compartment of the Wireless Smart-Loader.
Turn the power switch to “on” at the left side of the Wireless
Smart-Loader. A green LED lights up when any button is
pressed, indicating that batteries are in operational condition.
When the red LED lights up, the batteries must be replaced.
Note:
•Only the wireless method can be used for the TV sets
described in this manual.
•The wired method, in which an accessory cable must be
connected between the Wireless Smart-Loader and the TV
set, is not an functional option for the TV sets described in
this manual.
Highlight “TV TO SMARTLOADER”.
•Press the right cursor key on the Wireless Smart-Loader.
– A number from 1-100 is displayed, indicating the data
transfer completed percentage, from the TV set to the
Wireless Smart-Loader (100 = fully loaded).
TV TO SMARTLOADER -------- ##
– When the data transfer is completed, ## is “100”, the
following menu appears for 3 seconds:
DONE >
– Now the Wireless Smart-Loader is programmed and
can be used to install other TV sets of the same type.
8.6.4Installing a TV with the Wireless Smart-Loader
Use a Wireless Smart-Loader programmed with the settings
from a master TV of the same type.
•Turn on the TV, press the “MENU” Key on the Wireless
Smart-Loader.
The following menu appears:
– SMARTLOADER
– SMARTLOADER TO TV >
– TV TO SMARTLOADER >
Highlight “SMARTLOADER TO TV”.
•Press the right arrow key on the Wireless Smart-Loader.
– A number from 1-100 is displayed, indicating the data
transfer completed percentage, from the Wireless
Smart-Loader to the TV (100 = fully loaded).
SMARTLOADER TO TV ||| -------##
– When data transfer is completed, ## = “100”,
the following menu appears for 3 seconds:
– GOODBYE >
– The TV set goes to stand-by now and will start up
automatically.
The TV set is now installed and ready for use.
E_14520_077.eps
070806
Figure 8-1 Wireless Smart-Loader 22AV1120/00
The installation procedure consists of three steps:
1. Choose the master TV.
2. Program the Wireless Smart-Loader.
3. Install TV set(s) of the same type with the Wireless SmartLoader. (step 3 can be repeated on as many TV sets as
required).
8.6.2Choosing a Master TV
The master TV set is the TV whose installation set-up has to be
copied into other TV sets of the same type.
8.6.3Programming the Wireless Smart-Loader
This step has to be done only once, or any time the installation
set-up stored in the Wireless Smart-Loader has to be changed.
•Press the “MENU” Key on the Wireless Smart-Loader.
The following menu appears:
–SMARTLOADER
– SMARTLOADER TO TV >
– TV TO SMARTLOADER >
8.6.5Problems and Solutions:
•The message “WRONG VERSION” appears on the
screen.
– The Wireless Smart-Loader contains a master TV
installation set-up not compatible to the TV set to be
set-up. Reprogram the Wireless Smart-Loader from a
master TV set whose software version is compatible
with the software version of the TV set to be set-up.
•TV does not respond to the Wireless Smart-Loader.
– Check if the green LED lights up on the Wireless
Smart-Loader when any button is pressed, and check
if the batteries are in a good condition. When the red
LED lights up, the batteries must be replaced.
– Place the Wireless Smart-Loader closer to the infra red
receiver of the TV set and try again.
Tips:
•Write the software version and the type of the relevant
master TV set on the sticker, attached to the backside of
the Wireless Smart-Loader.
•Without batteries, the Wireless Smart-Loader retains the
stored information for ten years.
Note:
•Before the Wireless Smart-Loader is stored for a long
period of time, take out the batteries to prevent the contacts
from corrosion.
•Wired Smart-Loading method can not be used on the TV
sets described in this manual.
Page 74
EN 74LC7.2HU LB9.
Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.Circuit Descriptions, Abbreviation List, and IC Data Sheets
Index of this chapter:
9.1 Introduction
9.2 LCD Power Supply
9.3 DC/DC converters
9.4 Front-End
9.5 Video Processing
9.6 Memory addressing
9.7 Audio Processing
9.8 HDMI
9.9 Abbreviation List
9.10 IC Data Sheets
Notes:
•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.
9.1Introduction
The LC7.xH (development name “LC07”) is a new iTV chassis
for the year 2007 (LC7.1 is the analogue range, LC7.2 is the
digital range). It is the successor of the LC4.xH chassis, and
covers a screen size of 26 to 42 inch for LCD, with a new styling
called “ME7”.
The LC7.xHU chassis is derived from the LC7.1E_LA chassis:
it uses an SSB from this chassis, with a separate panel for
MPEG4 reception, and an i-Board (and in some models an
integrated card slot) for iTV functionality. The IBoard acts as TV
master and communicates with the MPEG4 module via UART.
See also table “Model range”.
Table 9-1 Model range
ITV Model Type NumberStyling ReferenceMFD Reference Model
32HF7965D/27ME7LB32PFL5322/10
Some key components are:
•Front-end processing is done in the MPEG4 bolt-on
module MP4HDM. This is a “black box” for Service, and
must be swapped when defective. No diagrams are given
in this manual.
•Sound processing is performed by a multi-standard sound
processor MSP4450 (item 7411)
•Video processing is performed by the Trident video
processor SVP CV32-LF (item 7202).
RF
SPDIF
Out
MP4HDM
Figure 9-1 Block diagram
(S)
UART
RESET#
Power 12V
(12W)
YPbPr
L/R
L/R
HDMI
(M)
IBoard
IR
SSB
2
C
I
H_17700_001.eps
090108
Page 75
Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.1.1SSB Cell Layout
EN 75LC7.2HU LB9.
Description of the functional blocks (top side):
•In the middle, there is the Trident video processor.
•Above it, there is the Reneas micro processor.
DC-DC CONVERSION
•At the right hand top, there is the audio class D amplifier.
AUDIO CLASS D
RENEAS
uP
TRIDENT
VIDEO
PROC.
HDMI
Figure 9-2 SSB top view
Description of the functional blocks (bottom side):
•The “Flash Mem” chip contains the software of the TV.
•The “Micronas” is the audio demodulator/processor.
•The two SDRAM’s are used for the video processing.
•There are two connectors for ComPair:
AUDIO CLASS D
MEM
FLASH
MICRONAS
AUDIO PROC.
SDRAM
SDRAM
H_16990_049.eps
270707
– One on SSB for I2C communication with the Reneas
micro processor.
– The other one at the digital reception part (MPEG4
module), for UART communication.
Figure 9-3 SSB bottom view
H_16990_050.eps
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Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.2LCD Power Supply
The Power Supply Unit (PSU) in this chassis is a buy-in and is
a black-box for Service. When defective, a new panel must be
ordered and the defective panel must be returned for repair,
unless the main fuse of the unit is broken. Always replace the
fuse with one of the correct specifications! This part is
commonly available in the regular market.
All Power Supply Units deliver the following voltages to the
chassis:
•+24 V to the inverters.
•+12 V to SSB.
•+12 V and -12 V to Audio Supply.
•12 V to Bolt-on module.
•+5 V Standby voltage.
9.3DC/DC converters
A switch generates the +5.2 V (+5V_SW) from the +5.2 V
(+5V_STANDBY) supply voltage. This switch is mounted onboard the SSB. This results in the +5V_STANDBY voltage,
coming from the Power Supply Unit, and is used as input for the
on-board DC/DC converters.
They deliver the following voltages to the board:
•+3.3 V (+3V3_STBY).
•+5.2 V (+5V_SW).
•+1.8 V (+1V8S_SW).
•+3.3 V (+3V3_SW).
An overview can be found in figure “DC-DC converter block
diagram”.
9.4Front-End
Digital inputs are processed by a separate panel that is bolted
on the SSB. This MPEG4 bolt-on module is a “black box” for
Service, and must be swapped when defective. There is no
further information available in this manual.
9.5Video Processing
The video processing is completely handled by the Trident SVP
CX32 video processor which features:
•CVBS-input for analogue signals.
•YCbCr-input for digital (DVB/MPEG4) signals.
•Motion and “edge-adaptive” de-interlacing.
•Integrated ADC.
•Built-in 8-bit LVDS transmitter.
•Color stretch.
•Skin color enhancement.
•3D Digital Comb Video Decoder.
•Interlaced and Progressive Scan refresh.
•OSD and VBI/Closed Caption.
9.5.1Video Application
The block diagram “Video” in chapter 6 shows the input and
output signals to and from the Trident Video Processor.
During digital reception, the video signal coming from the
MPEG4 module is fed to the video processor via pins HDMI_Y,
HDMI_Cb, and HDMI_Cr.
The video processor also interfaces the System Interface, iBoard, CVI and HDMI input.
(n.a. for LC7.xH)
Figure 9-4 DC-DC converter block diagram
(n.a. for LC7.xH)
(n.a. for LC7.xH)
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9.6Memory addressing
Figure “Memory block diagram” shows the interconnection
between the microprocessor, the FLASH memory, the Trident
Video Processor and the SDRAM.
7311
Reneas
micro-
processor
7202
Trident CX
CS/WR/RD
CPU_RST/WR/R D/CE
A[0:19 ]
D[0:7]
A[0:7]
D[0:7]
CLKE/CS0/RAS/CAS/WE
CX_BA0/BA1 /MCLK/
CLKE/CS0/RAS/CAS/WE
CX_MA[0:11]
DQ[0:15]
CX_BA0/BA1 /MCLK/
CX_MA[0:11]
DQ[16:31]
Figure 9-5 Memory block diagram
Control signals CPU_RST, WR, RD and CE, address lines
A[0:19] and data lines D[0:7] are used for transferring data
between the microprocessor (item 7311) and the flash memory
(item 7310). Control signals CS, WR and RD, address lines
A[0:7] and data lines D[0:7] are used for transferring data
between the Trident Video Processor (item 7202) and the
microprocessor (item 7311). Control signals CX_BA0,
CX_BA1, CX_MCLK, CX_CLKE, CX_CS0, CX_RAS, CX_CAS
and CX_WE, address lines CX_MA[0:11] and data lines
DQ[0:15] are used for transferring data between the Trident
Video Processor and the SDRAM ICs (items 7204 and 7205).
7310
1MB
Flash Memory
7204
SDRAM
7205
SDRAM
8MB
8MB
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EN 77LC7.2HU LB9.
9.7Audio Processing
The audio decoding is done entirely via the Multistandard
Sound Processor (MSP) 4450P (item 7411).
This processor covers the processing of both analogue and
(NICAM) digital input signals by processing the (analogue) IF
signal-in to processed (analogue) AF-out (baseband audio). An
internal 40 ms (stereo) audio delay line (LIP SYNC) is foreseen
and therefore no external delay line is necessary.
All internal clock signals are derived from an external
18.432 MHz oscillator.
The following functionality is included:
•Automatic Standard Detection (ASD) automatically detects
the actual broadcasted TV standard
•Automatic Sound Select (ASS) automatically switches
(without any I
bilingual mode when the broadcast mode changes.
9.7.1Audio Application
ANALOGUE
FRONT END
DVB / MOJO
(if present)
SCART 1 IN
SCART 2 IN
COMP IN
SIDE IN
HDMI IN
HDMI
IC
Figure 9-6 Block diagram audio processing - EU application
In EU applications, the MSP features:
•Sound IF input for signals coming from the analogue
front-end
•Three I
coming from the MPEG4 module in case of digital
reception
•Five analogue inputs: for EXT1 to EXT4 and HDMI
•Loudspeaker output path
•Headphone output path
•SCART-1 output path (RF)
•SCART-2 output path (WYSIWYG = monitor).
Digital audio signals coming from HDMI sources are fed to a
digital-to-analogue converter and then fed to the MSP.
In case of reception of digital TV signals, digital audio signals
are fed directly to the MSP via the I2S_DA_IN1, I2S_WS1 and
I2S_CL1 lines. This ensures a “true digital path”.
2
C-bus action) between mono/stereo/
MSP 4450P
2nd SIF
ANA_IN1+
I2S1
I2S_DA_IN1
I2
S_WS
I2S_CL
SC1-IN
SC2-IN
SC3-IN
SC4-IN
AUDIO
SC5-IN
DAC
2
S-inputs for signals (“DATA”, “CLK” and “WS”)
DACM
DACA
SC1-OUT
SC2-OUT
CLASS D
AMPLIFIER
HP AMPLIFIER
SCART 1 OUT
SCART 2 OUT
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Principle
+V
-V
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Figure 9-7 Principle Class-D Amplifier
The Class D amplifier works by varying the duty cycle of a
Pulse Width Modulated (PWM) signal.
By comparing the input voltage to a triangle wave, the amplifier
increases duty cycle to increase output voltage, and decreases
duty cycle to decrease output voltage.
The output transistors of a Class D amplifier switch from 'full off'
to 'full on' (saturated) and then back again, spending very little
time in the linear region in between. Therefore, very little power
is lost to heat. If the transistors have a low 'on' resistance
(RDS(ON)), little voltage is dropped across them, further
reducing losses.
A Low Pass Filter at the output passes only the average of the
output wave, which is an amplified version of the input signal.
In order to keep the distortion low, negative feedback is
applied.
The advantage of Class D is increased efficiency (= less heat
dissipation). Class D amplifiers can drive the same output
power as a Class AB amplifier using less supply current.
The disadvantage is the large output filter. The main reason
for this filter is that the switching waveform results in maximum
current flow. This causes more loss in the load, which causes
lower efficiency. An LC filter with a cut-off frequency less than
the Class D switching frequency, allows the switching current
to flow through the filter instead of the load, thus reducing the
overall loss and increasing the efficiency.
DC-protection
A DC-detection circuit is foreseen to protect the speakers. It is
built around three transistors (items 7A05 to 7A07) and
generates a protection signal (DC_PROT) to the
microprocessor in case of a DC failure in the Class D
amplifiers.
The microprocessor (item 7311) controls the audio part with the
following control lines:
•MUTEn: used to mute the Class D amplifiers
•ANTI_PLOP: used to detect any DC failure in the Class D
amplifiers
•DC_PROT: used to detect any DC failure in the Class D
amplifiers.
9.7.2Audio Amplifier
The audio amplifier is an integrated class-D amplifier
(TDA8932T, item 7A01). It combines a good performance with
a high efficiency, resulting in a big reduction in heat generation.
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9.8HDMI
9.8.1Introduction
Note: Text below is an excerpt from the “HDMI Specification”
that is issued by the HDMI founders (see http://www.hdmi.org).
The High-Definition Multimedia Interface is developed for
transmitting digital signals from audiovisual sources to
television sets, projectors and other video displays.
HDMI can carry high quality multi-channel audio data and can
carry all standard and high-definition consumer electronics
video formats. Content protection technology is available.
HDMI can also carry control and status information in both
directions.
HDMI is backward compatible with DVI (1.0). Compared with
DVI, HDMI offers extra:
•YUV 4:4:4 (3 × 8-bit) or 4:2:2 (up to 2 × 12-bit), where DVI
offers only RGB 4:4:4 (3 × 8 bit).
•Digital audio in CD quality (16-bit, 32/44.1/48 kHz), higher
quality available (8 channels, 192 kHz).
•Remote control via CEC bus (Consumer Electronics
Control): allows user to control all HDMI devices with the
TV's remote control and menus.
•Smaller connector (SCART successor).
•Less cables: e.g. from 10 audio/9 video cables to 3 HDMI
cables.
9.8.2Implementation
The IC used is the Sil 9025 (Silicon Image) third generation
HDMI receiver (item 7817 on the SSB) with following features:
•Dual HDMI input connector.
•Two EEPROMS to support EDID.
•HDMI audio.
2
•I
S output to DACs which operating freq. of 32 to 192 kHz.
•Integrated HDCP decryption engine.
•Built-in pre-programmed HDCP keys for copy protection.
•Color space conversion RGB to YCbCr.
•“Hot Plug Reset” signal.
Hot plug
HDMI_HOTPLUG_RESET
Reset
HDMI 1
HDMI 2
COMP_AUDIO LR
for DVI audio input
only
EDID
EDID
DDC Reset
(Port 1)
HDMI
Receiver
Sil9025
(Port 2)
Figure 9-8 HDMI implementation
HDMI connectors 1 and 2 are connected to resp. ports 1 and 2
of the HDMI receiver. The ports cannot be activated at the
same moment. Switching is controlled by software.
“Hot Plug Reset” and “DDC Reset” are controlled by the
microprocessor.
The HDMI receiver will convert all RGB or YCbCr 4:2:2 signals
to 24-bit YCbCr 4:4:4. When it receives a YCbCr 4:4:4 signal it
will just pass the signal directly to the Trident Video Processor.
algorithm that adapts aspect ratio to
remove horizontal black bars; keeping
up the original aspect ratio
ACIAutomatic Channel Installation:
algorithm that installs TV channels
directly from a cable network by
means of a predefined TXT page
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
AUOAcer Unipack Optronics
APAsia Pacific
ARAspect Ratio: 4 by 3 or 16 by 9
ASDAutomatic Standard Detection
AVAudio Video
B/GMonochrome TV system. Sound
carrier distance is 5.5 MHz
BTSCBroadcast Television System
for a CAM in a set top box
CLConstant Level: audio output to
connect with an external amplifier
CLUTColor Look Up Table
ComPairComputer aided rePair
COFDMCoded Orthogonal Frequency Division
Multiplexing; A multiplexing technique
that distributes the data to be
transmitted over many carriers
CSMCustomer Service Mode
CVBSComposite Video Blanking and
Synchronization
CVBS-MONCVBS monitor signal
CVBS-TER-OUTCVBS terrestrial out
CVIComponent Video Input
DACDigital to analogue Converter
DBEDynamic Bass Enhancement: extra
low frequency amplification
DDCDisplay Data Channel; is a part of the
“Plug and Play” feature
DFUDirections For Use: owner's manual
DNRDynamic Noise Reduction
DRAMDynamic RAM
DSPDigital Signal Processing
DSTDealer Service Tool: special
(European) remote control designed
for service technicians
DTSDigital Theatre Sound
DVB(T)Digital Video Broadcast; An MPEG2
I, L is all bands except for Band I
LPLLG Philips LCD
LSLoud Speaker
LVDSLow Voltage Differential Signalling,
data transmission system for high
speed and low EMI communication.
M/NMonochrome TV system. Sound
carrier distance is 4.5 MHz
MOSFETMetal Oxide Semiconductor Field
Effect Transistor
MPEGMotion Pictures Experts Group
MSPMulti-standard Sound Processor: ITT
sound decoder
MUTEMUTE Line
NAFTANorth American Free Trade
Association: Trade agreement
between Canada, USA and Mexico
NCNot Connected
NICAMNear Instantaneous Compounded
Audio Multiplexing. This is a digital
sound system, used mainly in Europe.
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
ON/OFF LEDOn/Off control signal for the LED
OADOver the Air Download
OSDOn Screen Display
PALPhase Alternating Line. Color system
used mainly in Western Europe (color
carrier = 4.433619 MHz) and South
America (color carrier PAL M =
3.575612 MHz and PAL N = 3.582056
MHz)
PCPersonal Computer
PCBPrinted Circuit Board (or PWB)
PDPPlasma Display Panel
PIGPicture In Graphic
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
SAMService Alignment Mode
SCSandCastle: two-level pulse derived
from sync signals
SC1-OUTSCART output of the MSP audio IC
SC2-OUTSCART output of the MSP audio IC
S/CShort Circuit
SCLClock signal on I2C bus
SDStandard Definition: 480i, 576i
SDAData signal on I2C bus
SDISamsung Display Industry
SDMService Default Mode
SDRAMSynchronous DRAM
SECAMSEequence Couleur Avec Memoire.
Color system used mainly in France
and Eastern Europe. Color carriers =
4.406250 MHz and 4.250000 MHz
SIFSound Intermediate Frequency
SMPSSwitch Mode Power Supply
SNDSouND
SOPSSelf Oscillating Power Supply
S/PDIFSony Philips Digital InterFace
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
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VCRVideo Cassette Recorder
VGAVideo Graphics Array
WDWatch Dog
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=
Luminance, U/V= Color difference
signals)
Circuit Descriptions, Abbreviation List, and IC Data Sheets
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Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.10 IC Data Sheets
This section shows the internal block diagrams and pin layouts
of ICs that are drawn as “black boxes” in the electrical diagrams
(with the exception of “memory” and “logic” ICs).
9.10.1 Diagram B04B, Type SVP CX32 (IC7202), Trident Video processor