Copyright 2007 Philips Consumer Electronics B.V. Eindhoven, The Netherlands.
All rights reserved. No part of this publication may be reproduced, stored in a
retrieval system or transmitted, in any form or by any means, electronic,
mechanical, photocopying, or otherwise without the prior permission of Philips.
SSB: ADC(B18) 3642-51
SSB: Columbus(B19) 3742-51
SSB: Pacific 3(B20) 3842-51
SSB: Diversity Tables B9-B2041
Class D Audio Amplifier (32”)(C) 5253
Side I/O Panel (26 ‘& 32”)(D) 5455
DC/DC Converter Panel(DC) 5657
Keyboard Control Board (26” & 32”)(E) 5858
IR/LED Panel(J) 5960
i-Board (26” & 32”)(HC) 6162
System Interface(SI) 6364
8. Alignments65
9. Circuit Descriptions, Abbreviation List, and IC Data
Sheets66
Abbreviation List66
IC Data Sheets68
10. Spare Parts List71
11. Revision List80
Published by WS 0762 BG CD Customer ServicePrinted in the NetherlandsSubject to modificationEN 3122 785 16571
EN 2LC4.31HU AB1.
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:
•Only information that is related to the iTV module, is
published in this manual. For the other information, see
the relevant chassis manual (order code on front page).
•Some models in this chassis range have a different
mechanical construction. The information given here is
therefore model specific.
•Figures can deviate due to the different set executions.
•Specifications are indicative (subject to change).
1.1Technical Specifications
1.1.1Vision
Display type: LCD, IPS
Screen size: 32” (82 cm), 16:9
Resolution (HxV pixels): 1366 x 768
Contrast ratio: 3200:1
2
Light output (cd/m
): 500
1.2.1Side I/O connections
G_16250_040.eps
010806
Figure 1-1 Side I/O connections
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
Response time (ms): 8
Viewing angle (HxV degrees): 176x176
1.1.2Sound
Sound systems: Virtual dolby surround
: Dynamic Bass
Enhancement
Maximum power (W
): 2 x 15
RMS
1.1.3Miscellaneous
Power supply:
Mains voltage (V
): 110 - 240
AC
Mains frequency (Hz): 50 / 60
Ambient conditions:
- Temperature range (°C): +5 to +40
- Maximum humidity: 90% R.H.
Power consumption:
Normal operation (W): 65
Stand-by (W): < 1
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
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
/ 75 ohm j
PP
AV1 Mini Jack: Video 1fH CVBS - In, Audio - In
1 - Audio R 0.5 V
/ 10 kohm oj
RMS
2 - Ground CVBS Gnd oj
3 - Video CVBS 1 V
4 - Audio L 0.5 V
/ 75 ohm oj
PP
/ 10 kohm oj
RMS
Mini Jack: Speaker - Out
- Loudspeaker 8 ohm ok
Dimensions
(WxHxD cm without stand): 93.5 x 51.6 x 12.0
Weight (kg): 19.2
1.2Connection Overview
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.
Technical Specifications, Connections, and Chassis Overview
EN 3LC4.31HU AB1.
1.2.2Rear Connections
HDMI: Digital Video/Digital Audio - In
19
182
1
E_06532_017.eps
250505
Figure 1-2 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
Cinch: DVI Audio - In
Rd - Audio - R 0.5 V
Wh - Audio - L 0.5 V
/ 10 kohm jq
RMS
/ 10 kohm jq
RMS
VGA: Video RGB - In
1
5
6
11
10
15
E_06532_002.eps
050404
Cinch: Audio - In
Wh - Audio L 0.5 V
Rd - Audio R 0.5 V
/ 10 kohm jq
RMS
/ 10 kohm jq
RMS
Service connector (UART)
1 - UART_TX Transmit k
2 - Ground Gnd H
3 - UART_RX Receive j
Service connector (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
1.2.3DCM Slot
Figure 1-4 DCM slot
The DCM slot can be used to connect consumer dedicated
applications on an Institutional TV set.
SDMDCM
G_16250_001.eps
270706
Figure 1-3 VGA Connector
1 - Video Red 0.7 V
2 - Video Green 0.7 V
3 - Video Blue 0.7 V
4-n.c.
/ 75 ohm j
PP
/ 75 ohm j
PP
/ 75 ohm j
PP
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
Wh - Audio L 0.5 V
Rd - Audio R 0.5 V
Ye -Video CVBS 1 V
/ 10 kohm jq
RMS
/ 10 kohm jq
RMS
/ 75 ohm jq
PP
Cinch: Video YPbPr - In
Gn - Video Y 1 V
Bu -Video Pb 0.7 V
Rd - Video Pr 0.7 V
/ 75 ohm jq
PP
/ 75 ohm jq
PP
/ 75 ohm jq
PP
EN 4LC4.31HU AB1.
1.3Chassis Overview
AUDIO AMPLIFIER
C
PANEL
Technical Specifications, Connections, and Chassis Overview
i-BOARD PANEL
HC
LCD SUPPLY
PANEL (item 1188)
SMALL SIGNAL
B
BOARD
SYSTEM INTERFACE
SI
PANEL
Figure 1-5 PWB/CBA locations (32” model)
G_16570_010.eps
180906
SIDE I/O PANEL
CONTROL PANEL
IR / LED PANEL
DC/DC
CONVERTER PANEL
D
E
J
DC
Safety Instructions, Warnings, and Notes
2.Safety Instructions, Warnings, and Notes
EN 5LC4.31HU AB2.
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.
Service Default Mode (see chapter 5) with a colour bar
signal and stereo sound (L: 3 kHz, R: 1 kHz unless stated
otherwise) and picture carrier at 475.25 MHz for PAL, or
61.25 MHz for NTSC (channel 3).
•Where necessary, measure the waveforms and voltages
with (D) and without (E) aerial signal. Measure the
voltages in the power supply section both in normal
operation (G) and in stand-by (F). These values are
indicated by means of the appropriate symbols.
•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= 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 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.
-9
), or pico-farads (p= x10
-12
-6
),
).
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
2.3.1General
•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
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.
EN 6LC4.31HU AB2.
Safety Instructions, Warnings, and Notes
To avoid wear-out of tips, switch “off” unused equipment or
reduce heat.
•Mix of lead-free soldering tin/parts with leaded soldering
tin/parts is possible but PHILIPS recommends strongly to avoid mixed regimes. If this cannot be avoided, carefully
clear the solder-joint from old tin and re-solder with new tin.
2.3.5Alternative 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.
2.3.7Board 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!
2.3.8Practical Service Precautions
•It makes sense to avoid exposure to electrical shock.
While some sources are expected to have a possible
dangerous impact, others of quite high potential are of
limited current and are sometimes held in less regard.
•Always respect voltages. While some may not be
dangerous in themselves, they can cause unexpected
reactions that are best avoided. Before reaching into a
powered TV set, it is best to test the high voltage insulation.
It is easy to do, and is a good service precaution.
Identification: The bottom line of a type plate gives a 14-digit
serial number. Digits 1 and 2 refer to the production center (e.g.
AG is Bruges), digit 3 refers to the B.O.M. code, digit 4 refers
to the Service version change code, digits 5 and 6 refer to the
production year, and digits 7 and 8 refer to production week (in
example below it is 2006 week 17). The 6 last digits contain the
serial number.
MODEL :
PROD.NO:
32PF9968/10
AG 1A0617 000001
220-240V 50/60Hz
VHF+S+H+UHF
S
Figure 2-1 Serial number (example)
2.3.6Exchanging a Defective PDP
If a PDP has defective or "dead" pixels, do the following:
1. Locate the defective pixels.
2. Indicate their positions by means of a marker (with
erasable ink!).
3. Indicate the positions of the defective pixels in the Defects
Description Form (DDF), which is published in the PDP
manuals.
4. After this, remove the PDP and return it to your Service
organisation.
MADE IN BELGIUM
~
128W
BJ3.0E LA
E_06532_024.eps
130606
If a PDP has to be removed from the TV set, always keep in
mind that the PDP parts can easily be damaged by ESD, so
take the following protective measures:
•Do not damage the flex foils (they are located on the left,
right, upper and lower sides of the PDP).
•Do not scratch the glass plate.
•Avoid fingerprints.
3.Directions for Use
You can download this information from the following websites:
4.3 Assy/Panel and STB removal (“piggy-backed” & “Smart
Card” STB versions)
4.4 Set Re-assembly
4.1Cable Dressing
Notes:
•Only information that is related to the iTV module, is
published in this manual. For the other information, see
the relevant chassis manual (order code on front page).
•Some models in this chassis range have a different
mechanical construction. The information given here is
therefore model specific.
•Figures can deviate due to the different set executions.
4.2Service Position
First, put the TV set in its service position. Therefore, place it
upside down on a table top (use a protection sheet or foam
bars).
4.2.1The Foam Bars
The foam bars (order code 3122 785 90580) can be used for
all types and sizes of Flat TVs. By laying the plasma or LCD TV
flat on the (ESD protective) foam bars, a stable situation is
created to perform measurements and alignments. By first
placing a mirror flat on the table under the TV you can easily
see if something is happening on the screen.
Figure 4-1 Cable dressing (32” models)
Required for sets
1
42”
Figure 4-2 Foam bars
G_16570_011.eps
140906
1
E_06532_018.eps
171106
Mechanical Instructions
s
6
s
6
4.3Assy/Panel and STB removal (“piggy-backed”
& “Smart Card” STB versions)
4.3.1Set Top Box and Bracket Removal (e.g. for TV-sets with
STB “piggy-backed”on rear side)
EN 9LC4.31HU AB4.
Warning: Before starting dismantling, disconnect all cables of
the Enseo Set Top Box and the TV set.
1. Remove the screws [1] of the Enseo cover.
2. Lift the Enseo cover from the bracket.
3. Do not damage cables and other internal components
while the Enseo cover is removed.
4. Disconnect all cables to and from the Enseo Set Top Box.
1
G_16570_006.eps
130906
Figure 4-3 Set Top Box cover removal
5. Remove screw [1], and take the AC adapter from the
bracket [2] by sliding it upwards.
Figure 4-5 “Piggy-backed” STB removal
4.3.2Rear Cover
2
1
G_16570_008.eps
140906
1
22
1
G_16570_007.ep
14090
Figure 4-4 12Vdc power adapter removal
6. Remove screws [1], and take the Enseo Set Top Box from
the bracket [2] by sliding it to the right.
Figure 4-6 STB bracket removal
1. Before the rear cover can be lifted from the TV set, all
external mounting brackets must be removed [1].
2. After the brackets have been removed, unscrew the rear
cover. Do not damage cables and other internal
components while the rear cover is lifted from the TV set.
4.3.3i-Board Panel (32”)
Now you have access to the i-Board.
1. Remove all connectors from the i-Board.
2. Release the metal fixation clamp of the i-Board (e.g. bend
with a pair of pliers).
3. Remove the panel.
G_16570_009.ep
13090
EN 10LC4.31HU AB4.
4.3.4DC/DC Converter Removal
Mechanical Instructions
3
1
2
G_16250_006.eps
Figure 4-7 DC/DC Converter removal (photo from 32HF7544D)
1. Remove connector [1] from the DC/DC Converter [2].
2. Carefully release the fixation clamps [3] and take out the
DC/DC Converter.
4.3.5System Interface Removal
12
280706
G_16570_012.eps
130207
4
5
4
5
3
G_16250_002.eps
270706
Figure 4-8 System Interface removal
1. Remove connector [1] from the System Interface [2].
2. Remove screw [3].
3. Carefully lift the lever on both Flat Foil Connectors (FFC)
[4], on the left and right edge of the System Interface [2].
4. Pull out both Flat Foils [5].
5. Pull the System Interface out of the lower carriers.
6. To remove, place it in a backward position, and move down
the System Interface.
4.3.6Enseo “Smart Card” Set Top Box Removal from DCM slot
(only for TV-sets without “piggy-backed” STB on rear side)
Warning: Before removal of the “Smart Card” STB, switch off
the TV-set.
Figure 4-9 “Smart Card” Set Top Box removal
4.4Set Re-assembly
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 positions. See Figure “Cable
dressing”.
Be careful with the fragile LVDS cable.
1. Remove the STB from the TV-set, by gently pulling it out of
its DCM slot (see picture “ ‘Smart Card’ Set Top Box
removal”).
Service Modes, Error Codes, and Fault Finding
5.Service Modes, Error Codes, and Fault Finding
EN 11LC4.31HU AB5.
Index of this chapter:
5.1 Hotel Mode, Service Modes
5.2 Error Codes
Notes:
•Only information that is related to the iTV module, is published in this manual. For the other information, see
the relevant chassis manual (order code on front page).
5.1Hotel Mode, Service Modes
5.1.1Hotel 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) in “setup” mode, and 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.
5.1.2 Service Modes
Only when the set is in normal consumer mode (MTV Mode),
all service modes can be accessed. Refer to the main chassis
manual for further explanation of the service modes.
5.2Error 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.
Table 5-1 Error code overview
Error Error DescriptionCheck Item Diagram
0No Error
1Mis-match of TV (Hercules)
SW and Scaler SW
Software
versions
N.A.
2+12V from PSU errorPSUA
3Plasma I
2
C error (only for
N.A.N.A.
plasma sets)
2
C error while
4I
7801B7 + B8
communicating with the
Genesis Scaler
5+5V protection7752B6
6General I
communication between
ADC, analogue tuner, and/or
Columbus I
2
7I
2
C error;
2
C failed
C error while
1102, 7L01,
7M00
B1 + B18
+ B19
7L01B18
communicating with ADC
2
C error while
8I
7C01B11
communicating with the
Scaler EEPROM
2
9I
C error while
7207B2
communicating with the
Hercules EEPROM (NVM for
TV).
Remark: when the Hercules
EEPROM is defective, the
Hercules should operate with
its default values.
2
10I
C error while
N.A.N.A.
communicating with the PLL
tuner
2
11I
C error while
7M00B19
communicating with the 3D
combfilter IC-7M00
(Columbus)
12I
2
C error while
N.A.HC
communicating with i-Board
uP (only iTV sets)
2
13I
C error while
N.A.N.A.
communicating with the
HDMI decoder IC-7D03 (only
for NAFTA and AP)
14Read-write error with the
7B01B10
Scaler SDRAM
2
15I
C error while
N.A.N.A.
communicating with the OTC
2
C error while
16I
communicating with EPLD or
7N00B20 +
B21
Pacific III
2
17I
C error while
N.A.N.A.
communicating with the
Digital Module (only for digital
sets)
18IBO hardware error (only for
N.A.N.A.
digital sets)
EN 12LC4.31HU AB5.
5.3Fault Finding and Repair Tips
5.3.1 General
Circuit diagram HC (chapter 7) shows the schematic diagram
of the i-Board together with IO for LC4.xHx. The main
microprocessor is the P89C664, a 64K flash microprocessor
from Philips. In some sets on the market, the P89C668 (96K)
microprocessor is used. There are 3 HEF switches (U2, U3,
U4) which select the different interface control protocols to
work with the external service providers. U7 is a RS232 IC.
The iTV i-Board is constantly powered by 5V, even when the
TV set is in its Stand-by mode or switched “off” by using the
power button on the local keyboard. The constant power supply
enables the i-Board to communicate constantly with the headend server of the service provider. In this chassis, only 3V3 is
available and this is converted to 5V.
5.3.2 Checking the i-Board
1. Check the voltages across C1 (= 3V3) and C4 (= 5V), for
32” type, (resp. C75 and C81 for 37” type).
If these are correct, the 3V3 to 5V converter is working
properly.
2. Check the clock signal on pin 2 (SCL), and data line pin 3
(SDA) of the i-Board microprocessor P89C664 with an
oscilloscope. If the communication between the
microprocessor P89C664 and the TV scaler board is
working correctly, the iTV OSD menu will appear when the
menu button on the setup remote control is activated.
3. Check pin 4 of the microprocessor P89C664, it should be
low when the microprocessor is operating normally. Pin 4
goes to the “high” state and causes the microprocessor to
“hang” if the supply voltage drops below 4.5 - 4.75V. U6 is
used to reset the microprocessor and to monitor the supply
voltage.
4. Check (using an oscilloscope) if the sine wave (16 MHz) is
present on pin 14 and 15 of the microprocessor P98C664
(internal Xtal oscillator).
Service Modes, Error Codes, and Fault Finding
5.3.3 Checking the Enseo “Smart Card” STB
1. Check if the TV-set is able to display “coded/scrambled”
signals as well as uncoded ones. If the set does not display
coded signals, the STB may be defective. In this case, the
STB module has to be treated as a “black box” and to
replaced by a new one. The defective one must be send
back for repair.
Block Diagrams, Test Point Overviews, and Waveforms
6.Block Diagrams, Test Point Overviews, and Waveforms
Wiring Diagram 32”
WIRING 32”
13LC4.31HU AB6.
RIGHT
SPEAKER
14P
8520
X530
X520
12P
14P
3P
X220
POWER
SUPPLY
8520
AC POWER
INLET
POWER
IN
8002
X200
X002
12P
2P3
B
SSB
LVDS CONNECTION
TO DISPLAY
30P
8P06
30P
31P
1N16
HDMI
19P
8411
LCD PANEL
C
CLASS D
AUDIO
AMPLIFIER
8J02
TO ENSEO
SET TOP BOX
12P
1J02
1440
5P
8903
1003
3P
8J03
1002
9P
8402
1G03
32P
4P
1001
3P
1J03
8903
8J04
1J04(1M52)
1103
4P
9P
8403
8400
8407
6P
1K00(1M21)
12P
1K01(1M06)
3P
1K02
32P
8408
J1
8K01
8684
4P
5P
8P6
SI
INVERTERINVERTER
3P
4P
J10
J1
J2
J3
I-BOARD
HC
J6
J4
24P
J3
32P
SYSTEM
INTERFACE
12P
8406
DC
J4
J2
6P
8410
6P
J4
DC/DC
CONVERTER
20P
8409
D
J
LEFT
SPEAKER
SIDE AV
24P
1301
20P
RJ12
1309
1302
12P
1321
1340
5P
8870
5P
1540
IR/LED/LIGHT
SENSOR
TO ENSEO
SET TOP BOX
3P
KEYBOARD CONTROL
E
1684
G_16570_001.eps
130906
Block Diagrams, Test Point Overviews, and Waveforms
Block Diagram Video
VIDEO
(WITH SYSTEM INTERFACE FOR DATA COMMUNICATION MODULE)