Copyright 2004 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.
Top Control Panel(Diagram E)5253
EMC Filter Panel(Diagram EMC) 5455
LED and Switch Panel (Diagram J)5657
8. Alignments59
9. Circuit Descriptions 63
Abbreviation List68
IC Data Sheets70
10 Spare Parts List73
11 Revision List79
Published by WO 0469 Service PaCEPrinted in the NetherlandsSubject to modificationEN 3122 785 14721
EN 2LC4.7E AA1.
Technical Specifications, Connections, and Chassis Overview
1.Technical Specifications, Connections, and Chassis Overview
Index of this chapter:
1. Technical Specifications
2. Connection Overview
3. Chassis Overview
Note: Figures below can deviate slightly from the actual
situation, due to the different set executions.
): 1000
Viewing angle (HxV degrees): 160x160
Tuning system: PLL
TV Colour systems: PAL B/G, D/K, I
Video playback: NTSC M/N 4.43
Supported inputs: VGA (640x350)
Channel selections: 100 presets
Aerial input: 75 ohm, Coax
1.1.2 Sound
Sound systems: FM-mono
Maximum power (W
): 2 x 15
RMS
1.1.3 Miscellaneous
Power supply:
- Mains voltage (V
): 90 - 264
AC
- Mains frequency (Hz): 50
: 42” (106 cm), 16:9
: SECAM B/G, D/K, L/L’
: PAL B/G
: SECAM L/L’
: VGA (640x480)
: VGA (720x400)
: MAC (640x480)
: MAC (832x624)
: SVGA (800x600)
: XVGA (1024x768)
: WXGA (1280x768)
: PAL 576i 1fH CVI
: NTSC 480i 1fH CVI
: PAL 576p 2fH HD
: NTSC 480p 2fH HD
: ATSC 720p 2fH HDMI
: ATSC 1080i 2fH
: UVSH
: IEC-type
: AM-mono
: FM-stereo B/G
: NICAM B/G, D/K, I, L
HDMI
1.2Connection Overview
Note: The following connector colour abbreviations are used
(acc. to DIN/IEC 757): Bk= Black, Bu= Blue, Gn= Green, Gy=
Grey, Rd= Red, Wh= White, and Ye= Yellow.
1.2.1 Rear Connections
(PDP)
(PDP)
Figure 1-1 Rear I/O
Cinch: Video CVBS - In, Audio - In
Wh - Audio L 0.5 V
Rd - Audio R 0.5 V
Ye - Video CVBS 1 V
SVHS (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
VGA: Video RGB - In
1
6
11
Figure 1-2 VGA Connector
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_DC +5 VDC j
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
Cinch: VGA (PC) Audio - In
Rd - Audio - R 0.5 V
Wh - Audio - L 0.5 V
Cinch: Audio - Out
Rd - Audio - R 0.5 V
Wh - Audio - L 0.5 V
/ 10kohm jq
RMS
/ 10kohm jq
RMS
/ 75 ohm jq
PP
/ 75 ohm j
PP
/ 75 ohm j
PP
5
10
15
E_06532_002.eps
050404
/ 75 ohm j
PP
/ 75 ohm j
PP
/ 75 ohm j
PP
/ 10 kohm jq
RMS
/ 10 kohm jq
RMS
/ 10 kohm kq
RMS
/ 10 kohm kq
RMS
(LCD)
E_14720_011.eps
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Ambient conditions:
- Temperature range (deg. C): +5 to +40
- Maximum humidity: 90% R.H.
Technical Specifications, Connections, and Chassis Overview
EN 3LC4.7E AA1.
External 2: Video CVBS/YC - In/Out, Audio - In/Out
21
20
E_06532_001.eps
2
1
050404
Figure 1-3 SCART connector
1 - Audio R 0.5 V
2 - Audio R 0.5 V
3 - Audio L 0.5 V
4 - Ground Audio Gnd H
/ 1 kohm k
RMS
/ 10 kohm j
RMS
/ 1 kohm k
RMS
5 - Ground Blue Gnd H
6 - Audio L 0.5 V
7 - Video C 0.7 V
8 - Function Select 0 - 2 V: INT
/ 10 kohm j
RMS
/ 75 ohm k
PP
4.5 - 7 V: EXT 16:9
9.5 - 12 V: EXT 4:3 j
9 - Ground Green Gnd H
10 - Easylink P50 0 - 5 V / 4.7 kohm jk
11 - n.c.
12 - n.c.
13 - Ground Red Gnd H
14 - Ground FBL Gnd H
15 - Video C 0.7 V
16 - n.c.
/ 75 ohm j
PP
17 - Ground Video Gnd H
18 - n.c.
19 - Video CVBS 1 V
20 - Video Y/CVBS 1 V
21 - Shield Gnd H
/ 75 ohm k
PP
/ 75 ohm j
PP
External 1: Video RGB/YUV-In, CVBS-In/Out, Audio-In/Out
1 - Audio R 0.5 V
2 - Audio R 0.5 V
3 - Audio L 0.5 V
4 - Ground Audio Gnd H
/ 1 kohm k
RMS
/ 10 kohm j
RMS
/ 1 kohm k
RMS
5 - Ground Blue Gnd H
6 - Audio L 0.5 V
7 - Video Blue/U 0.7 V
/ 10 kohm j
RMS
/ 75 ohm j
PP
8 - Function Select 0 - 2 V: INT
4.5 - 7 V: EXT 16:9
9.5 - 12 V: EXT 4:3 j
9 - Ground Green Gnd H
10 - n.c.
11 - Video Green/Y 0.7 or 1 V
/ 75 ohm j
PP
12 - n.c.
13 - Ground Red Gnd H
14 - n.c. H
15 - Video Red/V 0.7 V
16 - RGB Ctrl 0 - 0.4 V: INT
/ 75 ohm j
PP
1 - 3 V: EXT / 75 ohm j
17 - Ground Video Gnd H
18 - Ground RGB Ctrl Gnd H
19 - Video CVBS 1 V
20 - Video CVBS 1 V
21 - Shield Gnd H
/ 75 ohm k
PP
/ 75 ohm j
PP
Aerial - In
--IEC-type (EU) Coax, 75 ohm D
Service connector 1 (UART)
1 - UART_TX Transmit data k
2 - Ground Gnd H
3 - UART_RX Receive data j
Service connector 2 (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
1.3Chassis Overview
LED + SWITCH PANEL
J
EMC INTERFACE PANEL
EMC
SIDE I/O PANEL
D
Figure 1-4 PWB / CBA locations
TOP CONTROL PANEL
AUDIO PANEL
SMALL SIGNAL BOARD
E_14720_013.eps
E
C
C
A
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EN 4LC4.7E AA2.
Safety Instructions, Warnings, and Notes
2.Safety Instructions, Warnings, and Notes
2.1Safety Instructions
Safety regulations require that during a repair:
•Connect the set to the 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 AC Power lead for external
damage.
•Check the strain relief of the AC Power cord for proper
function.
•Check the electrical DC resistance between the AC Power
plug and the secondary side (only for sets which have a AC
Power isolated power supply):
1. Unplug the AC Power cord and connect a wire
between the two pins of the AC Power plug.
2. Set the AC Power switch to the "on" position (keep the
AC Power cord unplugged!).
3. Measure the resistance value between the pins of the
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 AC Power plug.
•Check the cabinet for defects, to avoid 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.
Available ESD protection equipment:
– Complete kit ESD3 (small tablemat, wristband,
connection box, extension cable and earth cable) 4822
310 10671.
– Wristband tester 4822 344 13999.
•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
2.3.1 General
•Measure the voltages and waveforms with regard to the
chassis (= tuner) ground (H), or hot ground (I), depending
on the tested area of circuitry. The voltages and waveforms
shown in the diagrams are indicative. Measure them in the
Service Default Mode (see chapter 5) with a colour bar
signal and stereo sound (L: 3 kHz, R: 1 kHz unless stated
otherwise) and picture carrier at 475.25 MHz for PAL, or
61.25 MHz for NTSC (channel 3).
•Where necessary, measure the waveforms and voltages
with (D) and without (E) aerial signal. Measure the
voltages in the power supply section both in normal
operation (G) and in standby (F). These values are
indicated by means of the appropriate symbols.
•The semiconductors indicated in the circuit diagram and in
the parts lists, are interchangeable per position with the
semiconductors in the unit, irrespective of the type
indication on these semiconductors.
•Manufactured under license from Dolby Laboratories.
“Dolby” and the “double-D symbol”, are trademarks of
Dolby Laboratories.
2.3.2 Schematic Notes
•All resistor values are in ohms and the value multiplier is
often used to indicate the decimal point location (e.g. 2K2
indicates 2.2 kohm).
•Resistor values with no multiplier may be indicated with
either an "E" or an "R" (e.g. 220E or 220R indicates 220
ohm).
•All capacitor values are given in micro-farads (µ= x10
nano-farads (n= x10
•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 Electrical
Replacement Parts List. Therefore, always check this list
when there is any doubt.
2.3.3 Rework on BGA (Ball Grid Array) ICs
General
Although (LF)BGA assembly yields are very high, there may
still be a requirement for component rework. By rework, we
mean the process of removing the component from the PWB
and replacing it with a new component. If an (LF)BGA is
removed from a PWB, the solder balls of the component are
deformed drastically so the removed (LF)BGA has to be
discarded.
Device Removal
As is the case with any component that, it is essential when
removing an (LF)BGA, the board, tracks, solder lands, or
surrounding components are not damaged. To remove an
(LF)BGA, the board must be uniformly heated to a temperature
close to the reflow soldering temperature. A uniform
temperature reduces the chance of warping the PWB.
To do this, we recommend that the board is heated until it is
certain that all the joints are molten. Then carefully pull the
component off the board with a vacuum nozzle. For the
appropriate temperature profiles, see the IC data sheet.
Area Preparation
When the component has been removed, the vacant IC area
must be cleaned before replacing the (LF)BGA.
Removing an IC often leaves varying amounts of solder on the
mounting lands. This excessive solder can be removed with
either a solder sucker or solder wick. The remaining flux can be
removed with a brush and cleaning agent.
After the board is properly cleaned and inspected, apply flux on
the solder lands and on the connection balls of the (LF)BGA.
Note: Do not apply solder paste, as this has shown to result in
problems during re-soldering.
-9
), or pico-farads (p= x10
-12
-6
),
).
Directions for Use
EN 5LC4.7E AA3.
Device Replacement
The last step in the repair process is to solder the new
component on the board. Ideally, the (LF)BGA should be
aligned under a microscope or magnifying glass. If this is not
possible, try to align the (LF)BGA with any board markers.
To reflow the solder, apply a temperature profile according to
the IC data sheet. So as not to damage neighbouring
components, it may be necessary to reduce some
temperatures and times.
More Information
For more information on how to handle BGA devices, visit this
URL: www.atyourservice.ce.philips.com
not available for all regions) ). After login, select “Magazine”,
then go to “Workshop Information”. Here you will find
Information on how to deal with BGA-ICs.
2.3.4 Lead Free Solder
Some PWBs in this chassis are “lead-free prepared”. This is
indicated on the PWB by the PHILIPS lead-free logo (either by
a service-printing or by a sticker). It does not mean that leadfree solder is actually used!
(needs subscription,
P
b
Figure 2-1 Lead-free logo
Due to this fact, 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.
•Use only adequate solder tools applicable for lead-free
soldering tin.
•Adjust your solder tool so that a temperature around 217 220 deg. C is reached at the solder joint.
•Do not mix lead-free soldering tin with leaded soldering tin;
this will lead to unreliable solder joints!
•Use only original spare parts listed in this manual. These
are lead-free parts!
•On the website www.atyourservice.ce.philips.com
subscription, not available for all regions) you can find
more information on:
– Aspects of lead-free technology.
– BGA (de-)soldering, heating-profiles of BGAs used in
Philips sets, and others.
2.3.5Practical Service Precautions
•It makes sense to avoid exposure to electrical shock.
While some sources are expected to have a possible
dangerous impact, others of quite high potential are of
limited current and are sometimes held in less regard.
•Always respect voltages. While some may not be
dangerous in themselves, they can cause unexpected
reactions - 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.
(needs
3.Directions for Use
You can download this information from the following websites:
•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).
4.2.1 Foam Bars
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. 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.
Figure 4-1 Cable dressing
170504
E_14720_012.eps
4.2.2 Aluminium Stands
E_06532_019.eps
170504
Figure 4-3 Aluminium stands (drawing of MkI)
The aluminium stands (order code 3122 785 90480) can be
mounted with the back cover removed or still left on. So, the
stand can be used to store products or to do measurements. It
is also very suitable to perform duration tests without taking
much space, without having the risk of overheating, or the risk
of products falling. The stands can be mounted and removed
quick and easy with use of the delivered screws that can be
tightened and loosened manually without the use of tools. See
figure above.
Note: Only use the delivered screws to mount the monitor to
the stands.
130804
Mechanical Instructions
EN 7LC4.7E AA4.
4.3Assy/Panel Removal
4.3.1 Metal Back Plate
Warning: Disconnect the mains power cord before you open
the set.
1. Place the TV set upside down on a table top, using the
foam bars (see part "Foam Bars").
Caution: do not put pressure on the display, but let the
monitor lean on the speakers or the Front cover.
2. Remove all T10 screws from the metal back plate.
3. Then, remove the four "mushrooms" from the back plate.
4. Lift the back plate from the set. Make sure that wires and
flat foils are not damaged during the back plate removal.
4.3.2 Rear Cover
1. Remove the screws that secure the rear cover. The screws
are located at the top, bottom, left and right sides.
2. Lift the rear cover from the cabinet. Make sure that wires
and flat foils are not damaged during cover removal.
4.3.3 EMC Interface Panel
1. Disconnect the cables from the panel.
2. Remove the fixation screws.
3. Take out the panel.
4.3.4 LED/Switch Panel
1. Remove the middle fixation screw (1) from the bottom side
of the connector plate (as this holds the SSB bracket).
Note: Sometimes it is easier to loosen the complete
connector plate and remove it together with the SSB.
2. Remove all connector fixation screws (2) from the front
side of the connector plate.
3. Remove the two female screw locks (3) of the VGA
connector.
4. Release the plastic cable clips (4) on the shielding and
disconnect all cables from the SSB.
Note: Be careful with the fragile LVDS connector on the
SSB.
5. Now, completely remove the SSB (together with all the
shieldings) from the set.
6. Once the SSB is out, remove the fixation screws (5) from
the shielding.
7. Remove the shielding, it hinges at the left side (acc. photo).
8. Remove the fixation screws that hold the panel(s), and take
out the panel(s).
Notes:
•Pay special attention to the EMC foam on the SSB
shielding. These must be replaced in their initial positions
during set re-assembly.
•Insulate the tuner pins, so they cannot touch the shielding
(see also figure “SDM Service jumper” in Chapter 5).
4.3.7Audio Panel
1. Disconnect all cables from the panel.
2. Remove the fixation screws and take out the panel.
1. Remove the fixation screws.
2. Take out the panel.
3. Disconnect the cable from the rear of the panel.
4.3.5 Top Control Panel
1. Remove the fixation screws.
2. Release the two fixation clamps and lift the panel out of the
bracket.
3. Take out the panel.
4. Disconnect the cable from the panel.
4.3.6 Small Signal Panel (SSB) and Side I/O Panel
2
(PDP)
(PDP)
31
Figure 4-4 SSB Connector plate
5
4
E_14710_003.eps
Figure 4-5 Shielding of the SSB
210404
(LCD)
E_14720_015.eps
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4.3.8Plasma Panel
Important: Be sure to work in a dust free environment during
the following activities. In addition, the use of (fabric) hand
gloves is advised.
2
1
1
44
3
1
Figure 4-6 Plasma panel disassembly
Disassembly
1. Place the TV set face down on the foam bars. Place the
bars at the edges of the set, so they will support the front
frame and not only the glass plate!
2. Remove the LED/Switch and Top Control panels (1).
3. Next step is to unplug the following cables (see also
“Wiring Diagram” in Chapter 6):
– AC Power (Mains) plug between Mains Filter and PSU
(loosen cable from clamps).
– All cables on the Audio panel.
– LVDS plug on SSB. Caution: Be careful, because this
connection is very fragile!
– SSB supply plugs on PSU.
– Audio Panel supply plug on PSU.
E_14720_014.eps
180804
EN 8LC4.7E AA4.
– Loudspeaker connections on speakers.
4. Remove all T10 parker screws around the frame (2).
5. Remove the two T10 tapping screws that hold the SSB (3).
6. Remove the four T25 screws (4) that hold the plasma
panel.
7. Lift the (gold coloured) plastic frame together with its PWBs
(except the Audio Panel) from the PDP panel.
8. Now the PDP (incl. the PSU and driving panels) can be
removed.
9. Before sending the plasma panel to the NSO for repair or
exchange, remove all its panels.
Assembly
In order to centre the (new) plasma panel correctly w.r.t. the
glass plate, do the following:
1. Place the (new) plasma panel face down on foam bars.
2. Also, place the front assy (front panel with glass plate) on
two other foam bars.
3. Mount the plastic frame on the plasma panel.
4. Lift the assy (frame and PDP), and place it into the front
assy.
5. Now follow the above described disassembly process in
reverse order.
4.4Set Re-assembly
Mechanical Instructions
To re-assemble the whole set, execute all processes in reverse
order.
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 at the
SSB shields. Control that EMC foams are put correctly on
their places.
Service Modes, Error Codes, and Fault Finding
5.Service Modes, Error Codes, and Fault Finding
EN 9LC4.7E AA5.
Index of this chapter:
1. Test Points
2. Service Modes
3. Problems and Solving Tips (related to CSM)
4. ComPair
5. Error Codes
6. The Blinking LED Procedure
7. Fault Finding and Repair Tips
5.1Test Points
This chassis is equipped with test points in the service printing.
In the schematics test points are identified with a rectangle box
around Fxxx or Ixxx. These test points are specifically
mentioned in the service manual as “half moons” with a dot in
the centre.
Perform measurements under the following conditions:
•Television set in Service Default Alignment Mode.
•Video input: Colour bar signal.
•Audio input: 3 kHz left channel, 1 kHz right channel.
5.2Service Modes
Service Default mode (SDM) and Service Alignment Mode
(SAM) offers several features for the service technician, while
the Customer Service Mode (CSM) is used for communication
between the call centre and the customer.
This chassis also offers the option of using ComPair, a
hardware interface between a computer and the TV chassis. It
offers the abilities of structured troubleshooting, error code
reading, and software version read-out for all chassis.
Minimum requirements for ComPair: a Pentium processor, a
Windows OS, and a CD-ROM drive (see also paragraph
"ComPair").
5.2.1 Service Default Mode (SDM)
(do not allow the OSD display to time out between entries
while keying the sequence).
•Short SDM jumper (item 4022, see Figure "Service
jumper") on the TV board and apply AC Power. Remove
the short after start-up.
Caution: Entering SDM by shorting "Service" jumpers will
override the software protections. Do this only for a short
period. When doing this, the service-technician must
know exactly what he is doing, as it could damage the
television set.
SDM
I2CUART
E_14710_062.eps
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Figure 5-1 SDM Service jumper
After entering 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 Alignment Mode.
Purpose
•To create a predefined setting for measurements to be
made.
•To override software protections.
•To start the blinking LED procedure.
•To inspect the error buffer.
•To check the life timer.
Specifications
•Tuning frequency: 475.25 MHz.
•Colour system: PAL B/G.
•All picture settings at 50% (brightness, colour contrast,
hue).
•Bass, treble and balance at 50%; volume at 25%.
•All service-unfriendly modes (if present) are disabled. The
service unfriendly modes are:
– Timer / Sleep timer.
– Child / parental lock.
– Blue mute.
– Hotel / hospital mode.
– Auto shut off (when no “IDENT” video signal is
received for 15 minutes).
– Skipping of non-favourite presets / channels.
– Auto-storage of personal presets.
– Auto user menu time-out.
– Auto Volume Levelling (AVL).
How to enter
To enter SDM, use one of the following methods:
•Press the following key sequence on the remote control
transmitter: “062596” directly followed by the MENU button
00022 LC42EP1 2.03/S42GV1 2.02 SDM
ERR 0 0 0 0 0
OP 000 057 140 032 120 128 000
E_14710_006.eps
240604
Figure 5-2 SDM menu (example from LC4.2E)
How to navigate
When you press the MENU button on the remote control, the
set will switch on the normal user menu in the SDM mode.
How to exit
Switch the set to STANDBY by pressing the POWER button on
the remote control transmitter.
If you turn the television set off by removing the mains (i.e.,
unplugging the television) or by using the POWER button on
the TV set, the television set will remain in SDM when mains is
re-applied, and the error buffer is not cleared.
EN 10LC4.7E AA5.
Service Modes, Error Codes, and Fault Finding
5.2.2 Service 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, Geometry, and
Audio).
•NVM Editor.
•ComPair Mode switching.
How to enter
Press the following key sequence on the remote control
transmitter: “062596" directly followed by the OSD/STATUS/
INFO button (do not allow the OSD display to time out between
entries while keying the sequence).
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.
00022 LC42EP1 2.03/S42GV1 2.02 SAM
ERR 0 0 0 0 0
OP 000 057 140 032 120 128 000
. Clear Clear ?
. Options
. Tuner
. White Tone
. Audio
. NVM Editor
. SC NVM Editor
. Test Pattern
. ComPair Mode On
E_14710_007.eps
Figure 5-3 SAM menu (example from LC4.2E)
Menu explanation
1. LLLLL. This represents the run timer. The run timer counts
normal operation hours (including “on/off” switching), but
does not count stand-by hours.
2. AAAABCD-X.YY/EEEEEE_F.GG. This is the software
identification of the Main/Scaler microprocessor:
– A= the chassis name.
– B= the region: E= Europe, A= Asia Pacific, U= NAFTA,
L= LATAM.
– C= the software diversity:
•Europe: T= 1 pg TXT, F= Full TXT, V= Voice ctrl.
•LATAM and NAFTA: N= Stereo non-dBx,
S= Stereo dBx.
•Asian Pacific: T= TXT, N= non-TXT, C= NTSC.
•ALL regions: M= mono, D= DVD, Q= Mk2.
– D= the language cluster number.
– X= the Main software version number (updated with a
major change that is incompatible with previous
versions).
– YY= the sub software version number (updated with a
minor change that is compatible with previous
versions).
– EEEEEE= the Scaler SW cluster
– F= the Scaler SW version no.
– GG= the sub-version no.
3. SAM. Indication of the Service Alignment Mode.
240604
4. Error Buffer (ERR). Shows all errors detected since the
last time the buffer was erased. Five errors possible.
5. Option Bytes (OP). Shows all option settings. See
“Options” in the Alignments section for a detailed
description. Seven codes are available.
6. Clear. Erases the contents of the error buffer. Select the
CLEAR menu item and press the CURSOR RIGHT key.
The content of the error buffer is cleared.
7. Options. Used to set the option bits. See “Options” in the
Alignments section for a detailed description.
8. Tuner. Used to align the tuner. See “Tuner” in the
Alignments section for a detailed description.
9. White Tone. Used to align the white tone. See “White
Tone” in the Alignments section for a detailed description.
10. Audio. No audio alignment is necessary for this television
set.
11. NVM Editor. Can be used to change the NVM data in the
television set.
12. SC NVM Editor. Can be used to edit Scaler NVM.
13. Test Pattern. For future use.
14. ComPaIr. Can be used to switch the television to “In
System Programming” (ISP) mode, for software uploading
via ComPair.
Caution: When this mode is selected without ComPair
connected, the TV will be blocked. Remove the AC power
to reset the TV.
How to navigate
•In SAM, select menu items with the CURSOR UP/DOWN
keys on the remote control transmitter. The selected item
will be highlighted. When not all menu items fit on the
screen, use the CURSOR UP/DOWN keys to display the
next / previous menu items.
•With the CURSOR LEFT/RIGHT keys, it is possible to:
– Activate the selected menu item.
– Change the value of the selected menu item.
– Activate the selected submenu.
•In SAM, when you press the MENU button twice, the set
will switch to the normal user menus (with the SAM mode
still active in the background). To return to the SAM menu
press the MENU button again.
•When you press the MENU key in while in a submenu, you
will return to the previous menu.
How to store SAM settings
To store the settings changed in SAM mode, 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 POWER button on
the remote control transmitter or on the television set.
5.2.3 Customer Service Mode (CSM)
Purpose
The Customer Service Mode shows error codes and
information on the TV’s operation settings. The call centre can
instruct the customer (by telephone) to enter CSM in order to
identify the status of the set. This helps the call centre to
diagnose problems and failures in the TV set before making a
service call.
The CSM is a read-only mode; therefore, modifications are not
possible in this mode.
How to enter
To enter CSM, press the following key sequence on the remote
control transmitter: “123654” (do not allow the OSD display to
time out between entries while keying the sequence).
Upon entering the Customer Service Mode, the following
screen will appear:
6. Press the CURSOR LEFT/RIGHT keys to increase or
decrease the BRIGHTNESS value.
7. Use the CURSOR UP/DOWN keys to select PICTURE.
8. Press the CURSOR LEFT/RIGHT keys to increase or
decrease the PICTURE value.
9. Press the MENU button on the remote control transmitter
twice to exit the user menu.
10. The new PERSONAL preference values are automatically
stored.
White line(s) around picture elements and text
If:
The picture improves after you have pressed the AUTO
PICTURE button on the remote control transmitter,
E_14710_008.eps
240604
Figure 5-4 CSM menu (example from LC4.2E)
Menu explanation
1. Indication of the decimal value of the operation hours
counter, Main/Scaler software version (see "Service
Alignment Mode" for an explanation), and service mode
(CSM= Customer Service Mode).
2. Displays the last five errors detected in the error code
buffer.
3. Displays the option bytes.
4. Displays the type number version of the set (option).
5. Reserved.
6. Indicates the television is receiving an "IDENT" signal on
the selected source. If no "IDENT" signal is detected, the
display will read "NOT TUNED"
7. Displays the detected Colour system (e.g. PAL/NTSC).
8. Displays the detected Audio (e.g. stereo/mono).
9. Displays the picture setting information.
10. Displays the sound setting information.
How to exit
To exit CSM, use one of the following methods:
•Press the MENU, STATUS (or EXIT/INFO/[i+]), or POWER
button on the remote control transmitter.
•Press the POWER button on the television set.
Then:
1. Press the AUTO PICTURE button on the remote control
transmitter repeatedly (if necessary) to choose
PERSONAL picture mode.
2. Press the MENU button on the remote control transmitter.
This brings up the normal user menu.
3. In the normal user menu, use the CURSOR UP/DOWN
keys to highlight the PICTURE sub menu.
4. Press the CURSOR LEFT/RIGHT keys to enter the
PICTURE sub menu.
5. Use the CURSOR UP/DOWN keys to select
SHARPNESS.
6. Press the CURSOR LEFT key to decrease the
SHARPNESS value.
7. Press the MENU button on the remote control transmitter
twice to exit the user menu.
8. The new PERSONAL preference value is automatically
stored.
Snowy picture
Check CSM line 6. If this line reads “Not Tuned”, check the
following:
•Antenna not connected. Connect the antenna.
•No antenna signal or bad antenna signal. Connect a proper
antenna signal.
•The tuner is faulty (in this case line 2, the Error Buffer line,
will contain error number 10). Check the tuner and replace/
repair the tuner if necessary.
5.3Problems and Solving Tips Related to CSM
5.3.1 Picture Problems
Note: The problems described below are all related to the TV
settings. The procedures used to change the value (or status)
of the different settings are described.
Picture too dark or too bright
If:
•The picture improves when you press the AUTO PICTURE
button on the remote control transmitter, or
•The picture improves when you enter the Customer
Service Mode,
Then:
1. Press the AUTO PICTURE button on the remote control
transmitter repeatedly (if necessary) to choose
PERSONAL picture mode.
2. Press the MENU button on the remote control transmitter.
This brings up the normal user menu.
3. In the normal user menu, use the CURSOR UP/DOWN
keys to highlight the PICTURE sub menu.
4. Press the CURSOR LEFT/RIGHT keys to enter the
PICTURE sub menu.
5. Use the CURSOR UP/DOWN keys (if necessary) to select
BRIGHTNESS.
Black and white picture
If:
•The picture improves after you have pressed the AUTO
PICTURE button on the remote control transmitter,
Then:
1. Press the AUTO PICTURE button on the remote control
transmitter repeatedly (if necessary) to choose
PERSONAL picture mode.
2. Press the MENU button on the remote control transmitter.
This brings up the normal user menu.
3. In the normal user menu, use the CURSOR UP/DOWN
keys to highlight the PICTURE sub menu.
4. Press the CURSOR LEFT/RIGHT keys to enter the
PICTURE sub menu.
5. Use the CURSOR UP/DOWN keys to select COLOUR.
6. Press the CURSOR RIGHT key to increase the COLOUR
value.
7. Press the MENU button on the remote control transmitter
twice to exit the user menu.
8. The new PERSONAL preference value is automatically
stored.
EN 12LC4.7E AA5.
Service Modes, Error Codes, and Fault Finding
Menu text not sharp enough
If:
•The picture improves after you have pressed the AUTO
PICTURE button on the remote control transmitter,
Then:
1. Press the AUTO PICTURE button on the remote control
transmitter repeatedly (if necessary) to choose
PERSONAL picture mode.
2. Press the MENU button on the remote control transmitter.
This brings up the normal user menu.
3. In the normal user menu, use the CURSOR UP/DOWN
keys to highlight the PICTURE sub menu.
4. Press the CURSOR LEFT/RIGHT keys to enter the
PICTURE sub menu.
5. Use the CURSOR UP/DOWN keys to select PICTURE.
6. Press the CURSOR LEFT key to decrease the PICTURE
value.
7. Press the MENU button on the remote control transmitter
twice to exit the user menu.
8. The new PERSONAL preference value is automatically
stored.
5.4ComPair
5.4.1 Introduction
the fault finding tree by asking you questions (e.g. Does the
screen give a picture? Click on the correct answer: YES /
NO) and showing you examples (e.g. Measure test-point I7
and click on the correct oscillogram you see on the
oscilloscope). You can answer by clicking on a link (e.g.
text or a waveform picture) that will bring you to the next
step in the fault finding process.
By a combination of automatic diagnostics and an interactive
question / answer procedure, ComPair will enable you to find
most problems in a fast and effective way.
Beside fault finding, ComPair provides some additional features like:
•Up- or downloading of pre-sets.
•Managing of pre-set lists.
•Emulation of the (European) Dealer Service Tool (DST).
•If both ComPair and Force/SearchMan (Electronic Service
Manual) are installed, all the schematics and the PWBs of
the set are available by clicking on the appropriate
hyperlink.
Example: Measure the DC-voltage on capacitor C2568
(Schematic/Panel) at the Mono-carrier.
– Click on the “Panel” hyperlink to automatically show
the PWB with a highlighted capacitor C2568.
– Click on the “Schematic” hyperlink to automatically
show the position of the highlighted capacitor.
5.4.3 How To Connect
ComPair (Computer Aided Repair) is a service tool for Philips
Consumer Electronics products. ComPair is a further
development on the European DST (service remote control),
which allows faster and more accurate diagnostics. ComPair
has three big advantages:
•ComPair helps you to quickly get an understanding on how
to repair the chassis in a short time by guiding you
systematically through the repair procedures.
•ComPair allows very detailed diagnostics (on I
is therefore capable of accurately indicating problem areas.
You do not have to know anything about I
yourself because ComPair takes care of this.
•ComPair speeds up the repair time since it can
automatically communicate with the chassis (when the
microprocessor is working) and all repair information is
directly available. When ComPair is installed together with
the Force/SearchMan electronic manual of the defective
chassis, schematics and PWBs are only a mouse click
away.
5.4.2 Specifications
ComPair consists of a Windows based fault finding program
and an interface box between PC and the (defective) product.
The ComPair interface box is connected to the PC via a serial
(or RS232) cable.
For this chassis, the ComPair interface box and the TV
communicate via a bi-directional service cable via the service
connector(s).
The ComPair fault finding program is able to determine the
problem of the defective television. ComPair can gather
diagnostic information in two ways:
•Automatic (by communication with the television): ComPair
can automatically read out the contents of the entire error
buffer. Diagnosis is done on I
access the I
send and receive I
2
C/UART bus of the television. ComPair can
2
C/UART commands to the micro
2
C/UART level. ComPair can
controller of the television. In this way, it is possible for
ComPair to communicate (read and write) to devices on
2
the I
C/UART buses of the TV-set.
•Manually (by asking questions to you): Automatic
diagnosis is only possible if the micro controller of the
television is working correctly and only to a certain extend.
When this is not the case, ComPair will guide you through
2
C level) and
2
C commands
1. First, install the ComPair Browser software (see the Quick
Reference Card for installation instructions).
2. Connect the RS232 interface cable between a free serial
(COM) port of your PC and the PC connector (marked with
“PC”) of the ComPair interface.
3. Connect the mains adapter to the supply connector
(marked with “POWER 9V DC”) of the ComPair interface.
4. Switch the ComPair interface “OFF”.
5. Switch the television set “OFF” with the POWER switch.
6. Connect the ComPair I
the connector on the rear side of the ComPair interface
(marked with “I
“VCR”) and the appropriate ComPair connector at the rear
side of the TV (I
2
C/UART interface cable between
2
C” or for UART on the connector marked
2
C or UART).
Note: Some chassis need an additional I
cable due to a different connector pitch!
7. Plug the mains adapter in a mains outlet, and switch the
interface “ON”. The green and red LEDs light up together.
The red LED extinguishes after approx. 1 second while the
green LED remains lit.
8. Start the ComPair program and read the “Introduction”
chapter.
Note: If you encounter any problems, contact your local
support desk.
5.5Error Codes
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.
5.5.1 How To Read The Error Buffer
You can read the error buffer in 3 ways:
•On screen via the SAM (if you have a picture).
Examples:
– 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.
Table 5-1 Error code overview
Error DeviceError description Check itemDiagram
0 Not applicable ---
1 Not applicable ---
2 Not applicable ---
3 Not applicable ---
4 GM1501
Scaler
Flash-ROM
5 Not applicable +5V protection7930A6
6I2C busGeneral I2C error7011, 3088, 3096A2
7 Not applicable ---
8M24C32I2C error while
9M24C16I2C error while
10 TunerI2C error while
11 Not applicable ---
12 Not applicable ---
13 Not applicable ---
14 K4D263238M Read-write error
15 TDA9178T/N1 I2C error while
16 TDA9178T/N1 I2C error while
I2C error while
communicating with
the Genesis Scaler
and/or Flash-ROM
is faulty/empty
communicating with
the Scaler EEPROM
communicating with
the EEPROM
communicating with
the PLL tuner
with the Scaler
SDRAM
communicating with
Histogram
communicating with
EPLD on Pixel Plus
panel
7401
7530
7531A11
7099A2
1302, 3302, 3303, 3327 A1
7501A10
7560A3
7560A3
A7
A11
5.5.2 How 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/STATUS button (do not allow the OSD
display to time out between entries while keying the
sequence).
– Make sure the menu item CLEAR is highlighted. Use
the CURSOR UP/DOWN buttons, if necessary.
– Press the CURSOR RIGHT button to clear the error
buffer. The text on the right side of the “CLEAR” line will
change from “CLEAR?” to “CLEARED”
•If an error does not reoccur within 50 hours it is deleted
from the error buffer.
5.5.3 Error 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).
5.6The Blinking LED Procedure
Using this procedure, you can make the contents of the error
buffer visible via the front LED. This is especially useful when
there is no picture.
When the SDM is entered, the front LED will blink the contents
of the error-buffer:
•The Led blinks with as many pulses as the error code
number, followed by a time period of 1.5 seconds, in which
the Led is off.
•Then this sequence starts is repeated.
Any RC5 command terminates this sequence.
Example of error buffer: 12 9 6 0 0
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 at 12 short blinks.
5.7Fault 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.
EN 14LC4.7E AA5.
Service Modes, Error Codes, and Fault Finding
5.7.1 NVM Editor
In some cases, it can be handy 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.
HexDecDescription
.ADR0x000A10Existing value
.VAL0x00000New value
.StoreStore ?
5.7.2 Load default NVM values
In case a blank NVM is placed or when the NVM content is
corrupted, default values can be downloaded into the NVM.
After the default values are downloaded it will be possible to
start up and to start aligning the TV set. This is no longer
initiated automatically; to initiate the download the following
action has to be performed:
1. Switch the TV set “off” via the AC Power switch.
2. Short circuit the SDM jumpers (keep short-circuited).
3. Press P+ or Ch+ on the local keyboard (and keep it
pressed).
4. Switch the TV set “on” via the AC Power switch.
5. When the set has started, the P+/Ch+ button can be
released and the short circuit of the SDM jumpers can be
removed.
6. The red LED will be on continuously to indicate that the
download is initiated (normally when SDM is activated the
red LED will start with the Blinking LED sequence).
7. Wait +/- 30 s (time needed to download default values to
the NVM).
•If the H-out (pin 67) has a signal (or has a signal for a very
short time), change IC7016 (NE555).
No TV but PC is present
1. Check if HSYNC and VSYNC are present at pin 3 of 7017
and 7015.
2. If they are present, check RGB output.
3. If there is no RGB output, the IC TDA120xx can be defect.
Comb Filter not working
Check Option Byte 5 in SAM (see also chapter 8 “Alignments”).
5.7.5 Power Supply
This power supply is for Service a “black box”. When defective,
(this can be traced by error-codes in the error buffer, or by
strange phenomena), a new panel must be ordered and after
receipt, the defective panel must be send in for repair.
For some basic voltage-measurements, you can use the block
diagram(s) in Chapter 6.
5.7.3 Tuner and IF
No Picture in RF mode
1. Check whether picture is present in EXT. If not, go to Video
processing troubleshooting section.
2. If present, check that the Option settings are correct.
3. Check that all supply voltages are present.
4. Check if I
5. Manually store a known channel and check if there is IF
output at Tuner pin 11.
6. Feed in 105 dBuV at Tuner pin 11 and check whether there
is RGB output from Video Processing IC. If yes, Tuner may
be defect. Replace Tuner.
Required system is not selected correctly
1. Check whether a Service jumper (#4022, 0805 size) is
present. If yes, remove it.
5.7.4 Video Processing
No power
1. Check +12 V and 3V3 at position 1910.
2. If no supply, check the connector 1910.
3. If it is correct, check the power supply board.
Power supply is correct but no green LED
1. Check if connectors 1005 and 1601 are properly inserted.
2. If yes, check if the 3V3 is present.
2
C lines are working correctly (3.3V).
No picture display
1. Check the RGB signal.
2. If it is present, check 3-IC7016 (NE555).
3. If it has output, the problem is in SCALER part.
4. Otherwise, check H-out on pin 2 of NE555. If the input
signal of pin2 is present, but no output, the IC is defect.
Note:
•If the H-out (pin 67) doesn’t have signal or the level is low,
check the output of NE555 (pin 3) during start up.
Block Diagrams, Testpoint Overviews, and Waveforms
6.Block Diagrams, Testpoint Overviews, and Waveforms
Wiring Diagram
15LC4.7E AA6.
Top control
E
0345_
3_KR
PLASMA SCREEN
Right
Speaker
Lspeak
posilock
8345
1320_10_KR
EMC
interface assy
1330_10_KR
8346
1355_
3_KR
1345_
3_KR
Delta
Mainsfilter
AC Inlet
SUB Supply
_4_KR
CN900
4
_11_KR
CN9006
_7_HR
GND
CN9005_10_KR
Side I/O
D
0936_11_KR
LA03_30_UJU
1M46_11_KR
8320
8303
8301
SHIELDING
8350
8302
PDP Main Supply
Left
Speaker
CN8001
2P
ferrite
_10_KR
1G51_31_FI
A
SSB
1M03
8336
1M52_9_KR
1408_
1M02_7_HR
1301_
8352
4_KR
1M02
1735
7P
3P
C
9P
AUDIO AMPL
1736
3P
1M36
_12_
KR
1M01
3_KR
_
1M20
_10_K
R
1739
Lspeak
posilock
LED/
J
SWITCH
_10_KR
0320
8330
8735
8736
E_14720_001.eps
030904
Block Diagrams, Testpoint Overviews, and Waveforms
Block Diagram Audio and Video
TUNER + VIF
A 3
A1
TV
FM
SCL
A2
SDA
A2
SSIF
A2
SEL_IF
A2
A 3
A17
16
MON-Out
15
C-In
12
L-Out
11
R-Out
TER-Out
9
7
R-In
G-In
6
B-In
5
L-Out
2
R-Out
1
LR
AUDIO-OUT
D
SVHS
2
CVBS
L
R
SIDE I/O
5
COMPAIR
1301
REAR IO SCART
34
1
FRONT_DETECT
+5VSW
1302
6,7
4
2
1
3
7316
SCART 2
21
20
2
1
SCART 1
21
20
2
1
Y/CVBS
+VTUN
51
Y/CVBS-In
P50
Status
L-In
R-In
CVBS-In
FBL-In
Status
L-In
R-In
C
L
R
9
11
10
10
09361336
4
2
6
8
7
10
11
F306
10
15
16
12
11
9
7
5
2
1
2321
F305
3311
7138
EF
L
R
7119
EF
6
L
R
L
R
4
2
6
8
7
10
11
RF_AGC
6323
3323
7320
SC1_COMP_AV1_G_Y_CVBS_IN
SC1_COMP_AV1_LR_IN
1328
4327
2
4331
3
1330
4333
2
4334
3
+5VSW
SC1_CVBS_IN
SC2_Y_IN
SC2_C_IN
SC2_CVBS_MON_OUT
STATUS_2
SC2_LR_MON_OUT
SC2_LR_IN
SC1 _CVBS_RF_OUT
SC1_FBL_IN
SC1_COMP_R_V_IN
SC1_COMP_B_U_IN
STATUS_1
SC1_LR_RF-OUT
Const_LR_OUT
HP_DET_IN
SVHS_C_IN
SVHS _AV2_Y_CVBS_IN
SVHS_LR_IN
HP_LROUT
TV SUPPLY
A6
+12VSW
7
8
7
8
P50
VIF2
VIF1
SIF2
SIF1
5930
A2
7011 - IF
25
24
31
30
29
3931
HERCULES
P50
STATUS_2
STATUS_1
7930
8
7
OSC
VCC
6
7920
5920
13
16LC4.7E AA6.
SYSTEM7011
PAL-MULTI/SECAMTDA12021
A 4
NTSCTDA12001
CHINA/NTSC-APTDA12011
H/V
CVBS/Y-X
SAND
CASTLE
SDA
SCL
15
7377-A
7376-A
7376-B
7377-B
CONBRI
RGB Matrix
Blue & Black
Gamma Corr.
R_OSD
SAT
SCAVEM
on Text
C-X
A2
4590
1:1
1:1
7372
Stretch
B_OSD
G_OSD
Fast Blanking
cvbs/y
Sync Sep
H-OSC
H-Shift
H-Drive
Vertical & EastWest Geometry
7561
7563
SC
PROC.
A5
PROTECT_AUDIO
A9
SOUND_ENABLE
POR-AUDIO
AUDIO_R
AUDIO_L
A
AUDOUTLSR
SOUND_ENABLE
A2
POWER_DOWN
A6
EXT_MUTE
A2
OUT_MUTE
RO
GO
BO
HOUT
FB/SC
VDRA
VDRB
SANDCASTLE
AUDIO
AMPLIFIER
AUDIO_R
N.C.
AUDIO_L
N.C.
3753
3752
SL
UDOUTL
85
86
87
67
66
23
22
1752
7013
HISTOGRAM
A3
7018
3010
3
2
4
5
1
6
7
8
9
7713
7714
3058
C
1739
3021
7019
3
2
4
5
1
6
7
8
9
2020
7016#
8
VCC
6
THR
TR
RES
7
DISC
OUT
CTRL
5
2028
2051
2022
3346
2034
PDP AUDIO
AUDIO_R
AUDIO_L
-16V-19V+16V+19V
NC
PROT
67
2
SOUND_ENABLE
+3V3STBY
7706
14
12
13
77
POR_AUDIO
Sound
Tr a p s
AGC
Detect
QSS Mixer/
AM Demod.
A2
CONTROL
SC
1_CVBS_IN
SVHS_AV2_Y_CVBS_IN
SC2_Y_IN
SVHS_C_IN
SC2_C_IN
SC2_CVBS_RF_OUT
SC2_CVBS_MON_OUT
SC1_FBL_IN
SC1_COMP_R_V_IN
SC1_COMP_AV1_G_Y_CVBS_IN
SC1_COMP_B_U_IN
5010
2055
7004
SC2_LR_MON_OUT
SC2_LR_IN
SC1_COMP_AV1_LR_IN
SC1_LR_RF-OUT
Const_LR_OUT
HP_DET_IN
SVHS_LR_IN
36
HP_LROUT
45
1
Q
S
R
5
2
3
4
REF
2
2931
3910
7910
2921
5931
+8VSW_TV
F913
6930
F915
F912
6910
Y_NOTCH
+5VSW
+VTUN
6911
CVBS1
QSS/FM
AM
CVBS/Y-X
C-X
55
58
51
59
52
43
64
A7
A4
7585
A5
HERCULES
A2
A5
A1
SSIF(Tuner FM)33
SC1_COMP_AV1_LR_IN
SVHS_LR_IN
SC2_LR_IN
AudioIN2LR
A12
SC2_LR_MON_OUT
SC1_LR_RF_OUT
Const_LR_OUT
Input
sw.
cvbs/y
Dig. 2H/4H
INA..D
Combfilter
Y Delay Adj.
c
CS1A..D
Output
sw.
H/V
+
cvbs
7562
5560
7011 - SOUND
QSS/FM
34,35
49,50
56,57
53,54
13
2
7x
AD Conv
Std Stereo
Decoder
Audio Select
ADC/DAC
+12VSW
AUDIO DELAY LINE (LIPSYNC)
COUNTERCOUNTER
Y
int
Chroma
PA L / N T SC /
SECAM
Decoder &
Baseband
INSSW3
78 79 807774 75 76
+8VSW_2
2561
7x
I2SCLK
I2S Proc
36,37
Delay
R/Pr-3
RAM
I2SDO
U
V
RGB/YPRPB Insert
YUV Interface
G/Y3
B/Pb-3
20
I2SDI1
7370
int
int
UOUT
YOU T
VOUT
9
68
Pix Improvement
(Histogram)
7560
TDA9178T
2
7x8x
"D" F.F."D" F.F.
8x
Audio
Control
Vo l/T reb /
Bass
Features
DACs
RGB Matrix
Blue & Black
Stretch
Gamma Corr.
Skin Tone
U/V Tint
Saturation
Pea king
SCAVEM
U/V Delay
UIN
VIN
70
71 72
161719
8x
61
60
62,63
7371
YUV
YUV IN/OUT
YIN
1
14
11
75847583758275817580
8x 8x
EF
2
4
3
# = NE555 TIMER
7017#
VCC
6
THR
7
DISC
CTRL
I722
18
6
10
I711
SOUND_
ENABLE
POR_CLASSD
+3V3STBY
40
11
7014
7012
3347
8
TR
RES
OUT
5
2047
7700
TDA7490
STBYMUTE
1
EF
EF
+5VSW
7015#
VCC
6
THR
7
DISC
CTRL
2042
+5VSW
2
4
3
-16V-19V
-16V-19V
7701 : 7707
SOUND
ENABLE
8
2
TR
4
RES
OUT
3
5
2021
SANDCASTLE
I357
I357
1V / div DC
5ms / div
2422
PWM
OSC
PWM
24
HP_LOUT
HP_ROUT
7708
3707
7710
AUD_SUP
R_SDTV
G_SDTV
B_SDTV
H_CS_SDTV
I354
V_SDTV
+16 +19V
I778
23
I776
3
+16V+19V
PROT1
A2
A13
A13
A13
I354
1V / div DC
20us / div
A13
A13
5702
3717
5701
3718
+16V+19V
E_14720_002.eps
1735
1
3
1736
1
3
300604
R
15W/
8R
L
15W/
8R
Block Diagrams, Testpoint Overviews, and Waveforms