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SELF-DIAGNOSTIC FUNCTION
SERVICE MANUAL
MODEL
COMMANDER DEST CHASSIS NO.
FE-1
MODEL
COMMANDER
CHASSIS
CHASSIS NO.
DEST
KV-25K5A KV-25K5B KV-25K5D KV-25K5E KV-25K5U
RM-883
Italian
SCC-Q06C-A
RM-883
French
SCC-Q02C-A
RM-883
AEP
SCC-Q04C-A
RM-883
Spanish
SCC-Q05C-A
RM-883
UK
SCC-Q01C-A
KV-29K5A KV-29K5B KV-29K5D KV-29K5E KV-29K5U
RM-883
Italian
SCC-Q06B-A
RM-883
French
SCC-Q02B-A
RM-883
AEP
SCC-Q04B-A
RM-883
Spanish
SCC-Q05B-A
RM-883
UK
SCC-Q01B-A
/
MENU
PROGR
RM-883
TRINITRON ® COLOR TV
MICROFILM
®
1
KV-25K5/29K5
ITEM MODEL Television System Stereo System Channel Coverage ITALIA VHF : A-H2 (C) UHF : 21-69 PAL B/G/H VHF : E2-E12 UHF : E21-E69 CABLE TV (1) : S1-S41 CABLE TV (2) : S01-S05, M1-M10, U1-U10 L VHF : F02-F10 UHF : F21-F60 CABLE : B-Q B/G/H VHF : E2-E12 UHF : E21-E69 CABLE TV (1) : S1-S41 CABLE TV (2) : S01-S05, M1-M10, U1-U10 ITALIA VHF : A-H2 (C) UHF : 21-69 I UHF : B21-B69 PAL B/G/H VHF : E2-E12 UHF : E21-E69 CABLE TV (1) : S1-S41 CABLE TV (2) : S01-S05, M1-M10, U1-U10 ITALIA VHF : A-H2 (C) UHF : 21-69 D/K VHF : R01-R12 UHF : R21-R69 PAL B/G VHF : E2-E12 UHF : E21-E69 CABLE TV (1) : S1-S41 CABLE TV (2) : S01-S05, M1-M10, U1-U10 ITALIA VHF : A-H2 (C) UHF : 21-69 Color System
Italian
B/G/H
GERMAN Stereo
PAL NTSC4.43, NTSC3.58 (VIDEO IN)
French
B/G/H, D/K, L, I
GERMAN/NICAM Stereo
PAL, SECAM NTSC4.43, NTSC3.58 (VIDEO IN)
AEP
B/G/H, D/K
GERMAN Stereo
PAL, SECAM NTSC4.43, NTSC3.58 (VIDEO IN)
Spanish
B/G/H, D/K
GERMAN/NICAM Stereo
PAL, SECAM NTSC4.43, NTSC3.58 (VIDEO IN) PAL, SECAM NTSC4.43, NTSC3.58 (VIDEO IN)
UK
I
NICAM Stereo
UHF : B21-B69
MODEL Power Consumption
25K5A 89 W
25K5B 97 W
25K5D 97 W
25K5E 97 W
25K5U 139 W
29K5A 100.1 W
29K5B 108 W
29K5D 108 W
29K5E 108 W
29K5U 158.5 W
[PICTURE TUBE] KV-25K5
[FRONT] Super Trinitron Approx. 63cm (25 inches) (Approx. 59cm picture measured diagonally) 110 degree deflection Super Trinitron Approx. 72cm (29 inches) (Approx. 68cm picture measured diagonally) 110 degree deflection Video input - phono jack Audio inputs - phono jacks S Video input 4 pin DIN Headphone jacks : stereo minijack Sound output Power requirements Dimensions KV-25K5 KV-29K5 Weight KV-25K5 KV-29K5 Supplied accessories Other features 2 x 20W (Music Power) 220 - 240V
KV-29K5
Approx 612x515x485mm Approx 679x581x526mm
Input/Output Terminals
[REAR] 21-pin Euro connector (CENELEC standard). Inputs for Audio and Video signals. Inputs for RGB. Outputs of TV Video and Audio signals. 21-pin Euro connector. inputs for Audio and Video signals. inputs for S Video. outputs for Audio and Video signals (selectable). Phono Jack Outputs for Audio Signals
Approx 37kg Approx 49.5kg RM-883 Remote Commander (1) IEC designated R6 battery (1) NICAM*, FASTEXT, TOPTEXT *(KV-25K5B/25K5E/25K5U/
29K5B/29K5E/29K5U only)
-
[RM-883] Remote control system Power requirements
Dimensions Weight
infrared control 1.5V dc 1 battery IEC designation R6 (size AA) Approx 65x225x21mm (w/h/d) Approx 157g (Not including battery)
2
KV-25K5/29K5
Model Name Item Pal Comb PIP RGB Priority Woofer Box Scart 1 Scart 2 Front in (3) Scart 4 Projector AKB in 16:9 mode Norm B/G/H Norm I Norm D/K Norm AUS Norm L Norm SAT Norm M Teletext Nicam Stereo Language Preset
KV-25K5A KV-29K5A OFF OFF OFF OFF ON ON ON OFF OFF ON ON OFF OFF OFF OFF OFF OFF ON OFF Italian
KV-25K5B KV-29K5B OFF OFF OFF OFF ON ON ON OFF OFF ON ON ON ON OFF ON OFF OFF ON ON French
KV-25K5D KV-29K5D OFF OFF OFF OFF ON ON ON OFF OFF ON ON OFF ON OFF OFF OFF OFF ON OFF German
KV-25K5E KV-29K5E OFF OFF ON OFF ON ON ON OFF OFF ON ON OFF ON OFF OFF OFF OFF ON ON Spanish
KV-25K5U KV-29K5U OFF OFF OFF OFF ON ON ON OFF OFF ON OFF ON OFF OFF OFF OFF OFF ON ON English
WARNING (KV-25K5U / KV-29K5U only)
The flexible mains lead is supplied connected to a B.S. 1363 fused plug having a fuse of 5 AMP capacity. Should the fuse need to be replaced, use a 5 AMP FUSE approved by ASTA to BS 1362, ie one that carries the ASA T the mark. IF THE PLUG SUPPLIED WITH THIS APPLIANCE IS NOT SUITABLE FOR THE OUTLET SOCKETS IN YOUR HOME, IT SHOULD BE CUT OFF AND AN APPROPRIATE PLUG FITTED. THE PLUG SEVERED FROM THE MAINS LEAD MUST BE DESTROYED AS A PLUG WITH BARED WIRES IS DANGEROUS IF ENGAGED IN A LIVE OUTLET SOCKET. When an alternative type of plug is used it should be fitted with a 5 AMP FUSE, otherwise the circuit should be protected by a 5 AMP FUSE at the distribution board.
How to replace the fuse. Open the fuse compartment with a screwdriver blade and replace the fuse.
FUSE
3
KV-25K5/29K5
21 pin connector (
,
2/
2)
Pin No 1
1
2
4
Signal Audio output B (right) Audio output B (right) Audio output A (left) Ground (audio) Ground (blue) Audio input A (left) Blue input Function select (AV control) Ground (green) Open Green Open Ground (red) Ground (blanking)
Signal level Standard level : 0.5V rms Output impedence : Less than 1kohm* Standard level : 0.5V rms Output impedence : More than 10kohm* Standard level : 0.5V rms Output impedence : Less than 1kohm*
2 3 4 5 6 7 8
Standard level : 0.5V rms Output impedence : More than 10kohm* 0.7 +/- 3dB, 75 ohms positive High state (9.5-12V) : Part mode Low state (0-2V) : TV mode Input impedence : More than 10K ohms Input capacitance : Less than 2nF
9 10
21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 3 2 1 4
11 12 13 14 _ 15 _ _
Green signal : 0.7 +/- 3dB, 75 ohms, positive
Red input (S signal Chroma input) Blanking input (Ys signal) Ground (video output) Ground (video input) Video output
0.7 +/- 3dB, 75 ohms, positive 0.3 +/- 3dB, 75 ohms, positive High state (1-3V) Low state (0-0.4V) Input impedence : 75 ohms
16 17 18 19 _ 20 _ _
1V +/- 3dB, 75ohms, positive sync 0.3V (-3+10dB) 1V +/- 3dB, 75ohms, positive sync 0.3V (-3+10dB) 1V +/- 3dB, 75ohms, positive sync 0.3V (-3+10dB)
Video input Video input Y (S signal) Common ground (plug, shield)
21
Connected
Not Connected (open)
* at 20Hz - 20kHz
Pin No 1 2 3 4
Signal Signal level Ground Ground Y (S signal) input 1V+/- 3dB 75 ohm, positive Sync 0.3V -3/+10dB C (S signal) input 0.3V+/- 3dB 75 ohm, positive Sync
4
KV-25K5/29K5
TABLE OF CONTENTS
Section Title Page Section Title Page
1. GENERAL
Overview of TV buttons Using Select Mode Adjusting the Picture Adjusting the Sound Using the Sleep Timer Viewing Teletext Exchanging Programme Pos Manually Tuning the TV Fine-Tuning Channels Using Optional Equipment Troubleshooting Specifications .....................6 .....................6 .....................7 .....................7 .....................8 .....................8 .....................9 .....................9 .....................10 .....................10 .....................11 .....................11
4. CIRCUIT ADJUSTMENTS
4-1. 4-2. 4-3. Electrical Adjustments Test Mode 2 FE-1 Self Diagnostic Software .....................20 .....................23 .....................24
5. DIAGRAMS
5-1. 5-2. 5-3. Block Diagram Circuit Board Location Schematic Diagrams and Printed Wiring Boards * S1 Board * A Board * VM Board * C Board * H1 Board Semiconductors IC Blocks .....................25 .....................32 .....................32 .....................34 .....................41 .....................46 .....................49 .....................51 .....................53 .....................55
2. DISASSEMBLY
2-1. 2-2. 2-3. 2-4. 2-5. 2-6. 2-7. Rear Cover Removal Chassis Assy Removal Service Position H1 Board Removal S1 Board Removal Picture Tube Removal Removal and Replacement of the Main - Bracket bottom plates .....................12 .....................12 .....................13 .....................13 .....................13 .....................14 .....................15 5-4. 5-5.
6. EXPLODED VIEWS
6-1. 6-2. Chassis Picture Tube .....................56 .....................57 .....................58
7. ELECTRICAL PARTS LIST
3. SET-UP ADJUSTMENTS
3-1. 3-2. 3-3. 3-4. Beam Landing Convergence Screen [G2] White Balance Focus .....................16 .....................17 .....................19 .....................19
CAUTION SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND THE ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR THE CARBON PAINTED ON THE CRT, AFTER REMOVAL OF THE ANODE CAP WARNING !! AN ISOLATING TRANSFORMER SHOULD BE USED DURING ANY SERVICE WORK TO AVOID POSSIBLE SHOCK HAZARD DUE TO LIVE CHASSIS. THE CHASSIS OF THIS RECEIVER IS DIRECTLY CONNECTED TO THE POWER LINE. SAFETY-RELATED COMPONENT WARNING !! COMPONENTS IDENTIFIED BY SHADING AND MARKED ON THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE PARTS LIST ARE CRITICAL FOR SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION APRES AVOIR DECONNECTE LE CAP DE'LANODE, COURT-CIRCUITER L'ANODE DU TUBE CATHODIQUE ET CELUI DE L'ANODE DU CAP AU CHASSIS METALLIQUE DE L'APPAREIL, OU AU COUCHE DE CARBONE PEINTE SUR LE TUBE CATHODIQUE OU AU BLINDAGE DU TUBE CATHODIQUE. ATTENTION !! AFIN D'EVITER TOUT RISQUE D'ELECTROCUTION PROVENANT D'UN CHÁSSIS SOUS TENTION, UN TRANSFORMATEUR D'ISOLEMENT DOIT ETRE UTILISÈ LORS DE TOUT DÈPANNAGE. LE CHÁSSIS DE CE RÈCEPTEUR EST DIRECTMENT RACCORDÈ Á L'ALIMENTATION SECTEUR. ATTENTION AUX COMPOSANTS RELATIFS Á LA SÈCURITÈ !! LES COMPOSANTS IDENTIFIÈS PAR UNE TRAME ET PAR UNE MARQUE SUR LES SCHÈMAS DE PRINCIPE, LES VUES EXPLOSÈES ET LES LISTES DE PIECES SONT D'UNE IMPORTANCE CRITIQUE POUR LA SÈCURITÈ DU FONCTIONNEMENT, NE LES REMPLACER QUE PAR DES COMPSANTS SONY DONT LE NUMÈRO DE PIÈCE EST INDIQUÈ DANS LE PRÈSENT MANUEL OU DANS DES SUPPLÈMENTS PUBLIÈS PAR SONY.
5
SECTION 1 GENERAL
Basic TV Features Additional TV Features
The operating instructions mentioned here are partial abstracts from the Operating Manual. The page numbers of the Operating Instruction Manual remain as in the manual.
Overview of TV Buttons
Using Select Mode
You can select different preset picture and sound modes.
1
/
MONO +
P
Press the MENU button on the remote control to display the menu on the TV screen.
SELECT
SELECT
OFF
OK
OFF
+ _
g
g
s
_
2 L/G/S/I R/D/D/D 2
On/Off Switch.
Video Input Button. (selects input signals from VCR etc.).
MONO
Auto Tune Button
Volume Control Buttons.
2
With the cursor pointing at the symbol on the TV screen as shown, press the yellow button.
SELECT
SELECT
OFF
+
P
+ _
_
s
2 L/G/S/I R/D/D/D 2
Programme Up or Down Buttons. (selects TV channels).
3
MENU
Press the blue button to select the desired mode: Personal Mode - reverts to settings made in "Adjusting the Picture and Sound" sections of the manual Movie Mode - for films Live Mode - for live broadcast programmes
Overview of Remote Control Buttons
PROGR
4
To Mute Sound Press to mute TV sound. Press again to restore the sound.
/
To Temporarily Switch Off TV Press to temporarily switch off TV. Press again to switch on TV from standby mode. To save energy we recommend switching off completely when TV is not in use. NOTE: After 15 -30 minutes without a TV signal and without any button being pressed, the TV switches automatically into standby mode.
Press the MENU button to remove the menu display from the TV screen.
6
RM-883
Note: The mode selected in step 3 is now stored.
To Select Channels Press to select channels. For double-digit programme numbers, e.g. 23, press -/-- first, then the buttons 2 and 3.
MENU
Changing Modes Quickly 1
Press the button on the remote control to display the three different modes. Press the mode. button again to select your desired
To Reveal On Screen Information Press to reveal all on-screen indications. Press again to cancel.
2
To Change Screen Format Press to view programmes in 16:9 mode. Press again to return to 4:3 mode.
PROGR
To Adjust TV Volume Press to adjust the volume of the TV.
RM-883
To Select Channels Press to select channels.
7
8
Additional TV Features
Additional TV Features
Adjusting the Picture
Although the picture is adjusted at the factory, you can modify it to suit your own requirement.
Adjusting the Sound
Although the sound is adjusted at the factory, you can modify it to suit your own requirement.
1
/
Press the button on the remote control to display the three different modes on the TV screen.
1
/
Press the button on the remote control to display the three different modes on the TV screen.
2
Press the symbol
button to highlight the personal mode as shown.
2
Press the symbol
button to highlight the personal mode as shown.
3
MENU
Press the MENU button to display the menu on the TV screen.
SELECT
3
MENU
Press the MENU button to display the menu on the TV screen.
SELECT
OFF
OFF
4
PROGR
Press the blue button on the control to select the symbol on the TV screen then press the yellow button.
SELECT
4
PROGR
Press the blue button to select the symbol on the TV screen then press the yellow button.
SELECT
OFF
OFF
7
5
RM-883
Press the blue button to select the item you wish to change (see below).
IIIIIIIIIIIIIII - - - - - IIIIIIIIIIIIIII - - - - - IIIIIIIIIIIIIII - - - - - IIIIIIIIIIIIIII - - - - - IIIIIIIIIIIIIII - - - - - 0
RM-883
5
Press the blue button to select the item you wish to change (see below).
MONO STEREO DSP ON OFF IIIIIIIIIIIIIIIIIIIIIII - - - - - IIIIIIIIIIIIIIIII - - - - - - - - IIIIIIIIIIIIIII- -IIIIIIIIIIIIIII
6 7
Press the red or yellow button to alter the selected item.
6 7
Press the red or yellow button to alter the selected item.
Press the MENU button to remove the menu display from the TV screen.
Press the MENU button to remove the menu display from the TV screen.
Symbol Symbol Item Contrast Colour Brightness Sharpness Hue control (only for NTSC video signals) Reset - resets to factory preset picture level Picture rotation - adjusts picture tilt (only for KV-29C5D model) · Represents the mode selected in the "Using Select Mode" section. · · · · · · ·
Item · Mono sound/Stereo sound A: Channel 1 sound/B: Channel 2 sound (to select your desired language from a dual sound broadcast) · On/Off (digital sound processor) · Treble · Bass · Balance · Reset (resets to factory preset sound level) · Represents the mode selected in the "Using Select Mode" section of the manual.
DSP
9
10
Additional TV Features
Additional TV Features
Using the Sleep Timer
The TV may be set to switch automatically to the standby mode after a length of time chosen by you. You may set the time in 15 minute steps up to 4 hours.
Viewing Teletext
Teletext is an information service transmitted by most TV stations.
1
/
Press the MENU button on the remote control to display the menu on the TV screen.
SELECT
Selecting Teletext
SELECT
OFF
/
OK
OFF
1
Press a number button on the remote control to select the channel which carries the teletext service you wish to receive. Press the button on the remote control to switch on teletext.
TELETEXT
Index Programme News Sport Weather 25 153 101 98
2
Press the blue button on the control to select the symbol on the TV screen, then press the yellow button.
2
SELECT
TELETEXT
Index Programme News Sport Weather 25 153 101 98
OFF
3
MENU
Input three digits for the page number using the numbered buttons on the control.
3
Press the yellow button repeatedly until the required amount of time delay appears on the screen.
MENU
SELECT
4
Press the
button to switch off teletext.
1:00
Note: Teletext errors may occur if the broadcasting signals are weak.
PROGR
PROGR
4
Once the time delay has been selected, press the MENU button to remove the on-screen display. One minute before standby, the display shown appears on the screen.
Using Other Teletext Functions
To Superimpose Teletext on to the TV
TELETEXT
Index Programme 25 153 101 98 News Sport Weather
8
RM-883
0:59
RM-883
once in teletext mode or twice in TV mode to Press superimpose teletext on to the TV screen. Press again to cancel teletext mode.
TELETEXT
Index Programme News Sport Weather
Notes: · When watching TV, press the time remaining. button to display
To Move to Next or Preceding Page Press PROGR +/- on the remote control to select the previous or next page. To Freeze a Teletext Page on the control to freeze the page. Press Press again to cancel the freeze. Revealing concealed information (eg: answers to a quiz). to reveal information. Press Press again to conceal the information. Using colour buttons to access pages (Fastext) When the colour coded menu appears at the bottom of a page, press the colour button (green, red, yellow or blue) to access the corresponding page.
25 153 101 98
· To return to normal operation from standby mode, button. press the
/
11
12
Additional TV Features
Additional TV Features
Exchanging Programme Positions
After tuning you may wish to change the order in which the channels appear on the TV. You may wish for example to exchange the channel on programme number 8 with the channel on programme number 4.
Manually Tuning the TV
You have already tuned the TV to receive all available channels using the `Automatically Tuning the TV' procedure at the start of this manual. You can however carry out this operation manually using the following instructions.
SELECT
1
/
Press the MENU button on the remote control.
1
SELECT
OFF
OK
/
Press the MENU button on the remote control to display the menu on the TV screen.
SELECT
SELECT
OFF
OFF
OK
OFF
2
Press the blue button on the control to select the TV screen, then press the yellow button.
on
SELECT
2
OFF
Press the blue button to select the symbol on the TV screen then press the yellow button.
SELECT
OFF
3
MENU
Press the blue button to select yellow button.
then press the
PROGR C S CH 05 F COO
01 IIIIIIIIIIIIIII - - - - on
MENU
3
With the cursor pointing at PROGR on the TV screen as shown, press PROGR + or - button on the remote control to allocate a programme number to the channel (eg PROGR 01). For double digit numbers e.g. 55, press the -/-- button on the remote control then the corresponding numbered buttons. Press the blue button to select the channel type (C to preset a regular channel or S to preset a cable channel) then press the yellow button to highlight the desired channel type.
PROGR C S CH 05 F COO
01 IIIIIIIIIIIIIII - - - - on
4
PROGR
4
With the cursor pointing at PROGR on the TV screen as shown, press PROGR + or - button until the channel you wish to rearrange appears on screen, then press the blue button once.
PROGR - + 01
PROGR
PROGR C S CH 05 F COO
01 IIIIIIIIIIIIIII - - - - on
9
RM-883
5
Press the red or yellow button to select the new programme number (e.g. PROGR 04) for your selected channel.
5
PROGR - + 04
RM-883
Press the blue button to select the tuning bar scale then press the yellow or red button once to start the channel search. (Yellow to search up the scale or red to search down). When a channel is found it appears on the TV screen. If you do not wish to store this channel on the programme number you selected, press the yellow or red button to continue searching for the desired channel. If this is the channel you wish to store, press the symbol on the screen blue button to select the then press the yellow button to store.
PROGR C S CH 05 F COO
01 IIIIIIIIIIIIIII - - - - on
6 6
Press the blue button to select then press the yellow button to exchange the channels.
PROGR - + 04
7 7
Repeat steps 4 to 6 if you wish to change the order of the other channels on your TV, then press MENU to return to normal TV screen.
PROGR C S CH 05 F COO
01 IIIIIIIIIIIIIII - - - - on
8
8
Repeat steps 3 to 7 if you wish to store more channels then press the MENU button to remove the menu from the TV screen.
Press the PROGR+/- button to view your selected channels on their new programme numbers.
13
14
Additional TV Features
Optional Connections
Fine-Tuning Channels
If a channel is slightly off tune, you can use this fine tune procedure to obtain a better picture reception.
Using Optional Equipment
You can connect optional audio or video equipment to your TV, such as a VCR, a camcorder or video games as shown. Front of TV
1
/
With the channel you wish to fine-tune on the screen, press the MENU button on the remote control. The menu display appears on the TV screen.
SELECT
Select and View the Input Signal
SELECT
OFF
OK
OFF
1 2
Connect your equipment to the designated TV socket. Press the button repeatedly on your remote control until the correct input symbol appears on the TV screen. Symbol Input signals · Audio/video input signal through the Euro AV connector F · RGB input signal through the Euro AV connector F
2
A B C D
2
Press the blue button on the remote control to symbol on the TV screen then press select the the yellow button.
SELECT
1
OFF
8mm/Hi8 camcorder
+
P
· Audio/video input signal through the Euro AV connector E or the phono sockets C and D · S video input signal through the socket B .
MONO + _ _
s
MENU
3
Press the blue button to select the F symbol on the TV screen then press the red or yellow button to adjust the tuning.
PROGR C S CH 05 F COO
01 IIIIIIIIIIIIIII - - - - on
s
2 L/G/S/I R/D/D/D 2
3 4
Switch on the connected equipment. To return to normal TV picture, press the control. button on the remote
S-VHS/Hi8 camcorder
PROGR
4
Press the blue button to select the symbol on the TV screen then press the yellow button to store.
PROGR C S CH 05 F COO
01 IIIIIIIIIIIIIII - - - - on
Note: To avoid picture distortion, do not connect equipment to the B , C or E connectors at the same time.
10
RM-883
Rear of TV
5
Additional Information
Press the MENU button to remove the menu from the TV screen. Connecting a VCR We recommend you tune in the VCR signal to TV programme number `0' using the `Manually Tuning in the TV' section of this instruction manual. Connecting Headphones Plug in your headphones to the socket A on the front of the TV set. Connecting Decoders Plug in decoders to the socket F on the rear of the TV. Connecting to External Audio Equipment Plug in your Hi-Fi equipment to the G sockets on the rear of the TV if you wish to amplify the audio output from the TV.
1
E F G
2/
s
L/G/S/I
1/
R/D/D/D
2
Playstation VCR Hi-Fi
15
17
Additional Information
Troubleshooting
Here are some simple solutions to problems which may affect the picture and sound. Problem Solution
Specifications
TV system I Colour system PAL NTSC 3.58, 4.43 (only Video In) Channel coverage UHF: B21-B69 Picture tube KV-25K5U: Super Trinitron Approx. 63 cm (25 inches) (Approx. 59 cm picture measured diagonally), 110 deflection KV-29K5U: Super Trinitron Approx. 72 cm (29 inches) (Approx. 68 cm picture measured diagonally), 110 deflection Inputs · Rear Terminals
No picture (screen is dark), no sound · Plug the TV in. button on the front of TV. · Press the · If the indicator is on press / button or a programme number button on the remote control. · Check the aerial connection. · Check that the selected video source is on. · Turn the TV off for 3 or 4 seconds and then turn it on again using the button on the front of the TV. Poor or no picture (screen is dark), but good sound · Using the MENU system, select the Picture Adjustment display. Adjust the brightness, picture and colour balance levels. to · From the Picture Adjustment display select return to the factory settings. · Press the button repeatedly on the remote control is displayed on the screen. until the RGB symbol · Press the +/ button on the remote control. is displayed on the screen, press the button · If on the remote control. · Using the MENU system, select the Picture Adjustment display. Adjust the colour balance. to · From the Picture Adjustment display select return to the factory settings. · Turn off any equipment connected to the 21 pin Euro connector on the rear of the TV. · Replace the batteries.
1/ 2/
s
21-pin Euro connector (CENELEC standard) including audio/video input, RGB input, TV audio/video output 21-pin Euro connector (CENELEC standard) including audio/video input, S-video input, Monitor audio/video output
Poor picture quality when watching a RGB video source. Good picture, no sound
· Front Terminals 2 video input - phono jack
2
s
11
No colour on colour programmes Distorted picture when changing programmes or selecting teletext Remote control does not function
audio inputs - phono jacks S video input - 4 pin DIN
Outputs Headphones jack - minijack stereo Audio outputs - phono jacks Sound output: 2 x 10 W (RMS) Power consumption KV-25K5U: 139 W KV-29K5U: 158.5 W Standby Power consumption 1W Dimensions (wxhxd) KV-25K5U: Approx. 612 x 515 x 485 mm KV-295KU: Approx. 679 x 581 x 526 mm Weight KV-25K5U: KV-29K5U: Approx. 37 kg Approx. 49.5 kg
· If you continue to have these problems, have your TV serviced by qualified personnel. · NEVER open the casing yourself.
Accessories supplied RM-883 Remote Control (1) IEC designated batteries (2) Other features TELETEXT, Fastext Design and specifications are subject to change without notice.
18
19
KV-25K5/29K5
SECTION 2 DISASSEMBLY
2-1. REAR COVER REMOVAL
3 Rear Cover
2 8 Screws BTV 4x16
1 1 Screw BTV 4x16
2-2. CHASSIS ASSY REMOVAL
12
KV-25K5/29K5
2-3. SERVICE POSITION
2-4. H1 BOARD REMOVAL
2-5. S1 BOARD REMOVAL
Release the clip indicated.
To release, push the claws in the direction of the arrow as indicated.
13
KV-25K5/29K5
2-6. PICTURE TUBE REMOVAL
11 Two DGC holders
12 Degaussing coils 6 Chassis assy 13 Spring Extension
5 Speaker box 7 C board 8 VM Board
(KV-29K5 only)
4 Two screws
9 Neck assy
(KV-29K5 only)
14 Four PT
screws (M)
10 Deflection yolk
3 Speaker box
1 Anode cap
2 Two screws
15 Picture tube
Cushion
·
REMOVAL OF ANODE-CAP
Note : Short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT shield or carbon paint on the CRT, after removing the anode.
* REMOVING PROCEDURES.
c
a
b b
Anode button
1 Turn up one side of the rubber cap in the direction indicated by the arrow a
2 Using a thumb pull up the rubber cap 3 When one side of the rubber cap is firmly in the direction indicated by the separated from the anode button, the arrow b anode-cap can be removed by turning up the rubber cap and pulling it up in the direction of the arrow c
·
1 2 3
HOW TO HANDLE THE ANODE-CAP
To prevent damaging the surface of the anode-cap do not use sharp materials. Do not apply too great a pressure on the rubber, as this may cause damage to the anode connector. A metal fitting called a shatter hook terminal is fitted inside the rubber cap. Do not turn the rubber foot over excessively this may cause damage if the shatter hook sticks out.
14
REMOVAL AND REPLACEMENT OF THE MAIN-BRACKET BOTTOM PLATES.
(1) REMOVING THE PLATES (2)
£
For safety reasons, on no account should the plates be removed and not refitted after servicing. REFITTING THE PLATES
In the event of servicing being required to the solder side of the A Board printed wiring board, the bottom plates fitted to the main chassis bracket require to be removed. This is performed by cutting the gates with a sharp wire cutter at the locations shown and indicated by arrows. Note :There are 2 plates fitted to the main bracket and secured by 4 gates. Only remove the necessary plate to gain access to the printed wiring board.
Because the plates differ in size it is important that the correct plates are refitted in their original location. Please note that the plates need to be rotated 180 degrees from the cut position to allow the tabs to be fitted in the catch positions.
Catch
Catch
Gate
Gate
Catch
15
Gate Tab Gate Tab
Tab
Gate Tab Gate Catch
Refitting Tab Gate Catch Gate
KV-25K5/29K5
KV-25K5/29K5
SECTION 3 SET-UP ADJUSTMENTS
· When complete readjustment is necessary or a new picture tube is installed, carry out the following adjustments. Unless there are specific instructions to the contrary, carry out these adjustments with the rated power supply. Unless there are specific instructions to the contrary, set the controls and switches to the following settings : Contrast Brightness ............... 80% [or remote control normal] ............... 50%
Carry out the following adjustments in this order :
3-1. 3-2. 3-4. 3-3. Beam Landing Convergence Focus White balance Test equipment required 1. Color bar/pattern generator. 2. Degausser. 3. Oscilloscope. 4. Digital multimeter. 5. DC Power supply.
· ·
Note :
Preparation:
1. 2. In order to reduce the influence of geomagnetism on the set's picture tube, face it in an easterly or westerly direction. Switch on the TV set's power and degauss with the degausser.
Fig. 3-2
For 29" models align the neck assy as indicated below. Purity Control
3-1. BEAM LANDING
1. 2. 3. Input an all-white signal from the pattern generator. Set the Contrast and Brightness to normal. Set the pattern generator raster signal to all Red. Move the deflection yolk forward and adjust with the purity control so that the Red is at the centre and the Blue and Green take up equally sized areas on each side of the screen. [See Fig.3-1 - 3-3]. Move the deflection yolk forward and adjust so that the entire screen becomes Red. [See Fig.3-1]. Switch the raster signal to Blue, then to Green and verify the purity condition. When the position of the deflection yolk has been determined, fasten the deflection yolk with the screws. If the beam does not land correctly in all the corners, use magnets to correct it. [See Fig.3-4]. Fig. 3-3
Purity control corrects this area.
A buckle Neck Assy G1 G2
Deflection Yoke
4. 5. 6. 7.
GREEN RED BLUE
Disk magnets or rotatable disk magnets correct these areas (a - d).
a
b
c
d
Deflection yolk positioning corrects these areas.
a c
b
Fig. 3-1
d
Fig. 3-4
16
KV-25K5/29K5
3-2. CONVERGENCE
Preparation:
· · · Before starting this adjustment, adjust the focus, horizontal size and vertical size. Minimize the Brightness setting. Input a dot pattern from the pattern generator.
·
Tilt the V.STAT magnet and adjust the static convergence by opening or closing the V.STAT magnet.
(1)
Horizontal and vertical static convergence
4. If the V.STAT magnet is moved in the direction of the a and b arrows, the Red, Green and Blue points move as indicated below.
Centre dot
R G B
R G
B
H.STAT
V.STAT Magnet
C Board RV701 SCREEN RV702
1.
2.
3.
[Moving horizontally], adjust the H.STAT control so that the Red, Green and Blue points are on top of each other at the centre of the screen. [Moving vertically], adjust the V.STAT magnet so that the Red, Green and Blue points are on top of each other at the centre of the screen. If the H.STAT variable resistor is unable to bring the Red, Green and Blue points together at the centre of the screen, adjust the horizontal convergence with the H.STAT variable resistor and the V.STAT magnet in the manner indicated below. [In this case, the H.STAT variable resistor and the V.STAT magnet influence each other].
17
KV-25K5/29K5
(2)
Operation of the BMC (Hexapole) magnet.
R G
B
R
G
B
R
G B
R
G
B
R
G
B
R
G
B
V.STAT Purity
BMC (Hexapole)
· The respective dot position resulting from moving each magnet interact, so be sure to perform adjustment whilst tracking. Use the H.STAT VR to adjust the Red, Green and Blue dots so that they coincide at the centre of the screen [by moving the dots in the horizontal direction].
(3)
Dynamic convergence adjustment.
Preparation:
· 1. Before starting this adjustment, adjust the horizontal and vertical static convergence. Slightly loosen the deflection yolk screws. 2. 3. 4. 5. Remove the deflection yolk spacer. Move the deflection yolk as indicated in the figure below and optimize the convergence. Tighten the deflection yolk screws. Re-install the deflection yolk spacer.
R G B
B R
G G
R B
B G R B G R R G B
B R G B B G R G R
R B
G
B
R G
G R
B
18
KV-25K5/29K5
(4)
·
Screen corner convergence.
If you are unable to adjust the corner convergence properly, this can be corrected by the use of permalloy assemblies.
3-3. Screen [G2], White balance
G2 Setting
1. 2. 3. 4. Input a dot signal from the pattern generator. Set the Picture, Brightness and Colour to minimum. Apply 170Vdc from an external power supply to the R, G and B cathodes of the CRT. Whilst watching the picture, adjust the G2 control [RV701 SCREEN] located on the C Board to the point just before the flyback return lines disappear.
a
b
a-d: screen-corner convergence defect c d
White balance adjustment
1. 2. 3. 4. 5. Input a `PAL' all-white signal from the pattern generator. Enter into the Service Mode. Enter into the `Picture' service menu. Select the `Green drive' and adjust so that the White Balance becomes optimum. Select the `Blue drive' and adjust so that the White Balance becomes optimum. Set the Picture to MIN. Set the `R-cut-off' to 07. Adjust the `G-cut-off', and the `B-cut-off' so that the White Balance becomes optimum. Press the button to return to TV operation.
Fit the permalloy assembly to the rear of the CRT to correct the area at fault.
a
6. 7. 8. 10.
b
PICTURE
R - Drive G - Drive Permalloy
c d
Adj Adj Adj Adj Adj Adj 02 01 01 Adj Adj Adj
B - Drive R - cut - off G - cut - off B - cut - off ID - start ID - stop ID - level Bellfo Sub Colour Sub Brightness
3-4. FOCUS
1. 2. 3.
FOCUS
Input a Phillips colour pattern Set the picture settings to normal. Adjust the focus control located on the Flyback transformer to bring the centre of the screen into focus. Note :Bring only the centre area of the screen into focus, switch to an all-white pattern and confirm that the magenta ring is hardly noticed. To obtain optimum focus balance the focus setting between optimum screen centre focus and a reduced magenta ring level.
19
KV-25K5/29K5
SECTION 4 CIRCUIT ADJUSTMENTS
4-1. ELECTRICAL ADJUSTMENTS
Service adjustments to this model can be performed using the supplied Remote Commander RM-883.
PICTURE
HOW TO ENTER INTO SERVICE MODE
1. 2. Turn on the main power switch and enter into the stand-by mode. Press the following sequence of buttons on the Remote Commander.
R - Drive G - Drive B - Drive R - cut - off G - cut - off B - cut - off ID - start
Adj Adj Adj Adj Adj Adj 02 01 01 Adj Adj Adj
i+
(ON SCREEN DISPLAY)
5
(DIGIT 5)
+
(VOLUME +) (TV)
ID - stop ID - level Bellfo Sub Colour Sub Brightness
·
`TT--' will appear in the upper right corner of the screen. Other status information will also be displayed. Press `MENU' on the remote commander to obtain the following menu on the screen.
GEOMETRY
3.
V centre V size V Lin S Corr
Adj Adj Adj Adj Adj Adj Adj Adj Adj Adj Adj Adj Adj 07 07 01
TEST MENU
H Cent H Size
> Picture Geometry Sound TV Status AGC Adjust Technical
Pin Amp Corner Pin Pin Phase V Bow V Angle Upper V Lin Lower V Lin Left HBLK Right HBLK CD Mode (AV)
4. 5. 6.
Move to the corresponding adjustment item using the `Green' [up] or `Blue' [down] buttons on the Remote Commander. Press the `Yellow' button to enter into the required menu item. Press the `Menu' button on the Remote Commander to quit the Service Mode when all adjustments have been completed.
SOUND
Nicam Error Lower Nicam Error Upper Nicam Error Rate AGC Gain Level
20 80
xx [Status only] xx [Status only]
TV STATUS
Note :The data shown in the `TV STATUS' table is dependant on destination and country.
Destination Text Language
A/L/E/U/D/B/K/R East/West
20
KV-25K5/29K5
Note: Ensure that no signal is applied to the Antenna socket while carrying out the following IF adjustments.
TECHNICAL
SYSTEM B/G, D/K, I & L I.F ADJUSTMENT
GD - Secam BD - Secam RC - Secam GC - Secam BC - Secam GD - Sports BD - Sports RC - Sports GC - Sports BC - Sports Y - Delay (AV) 30 31 11 19 10 30 36 14 15 17 07
1. 2. 3.
Input a 38.9Mhz carrier signal at 100dBuV to Pin 11 [IF output] of the tuner [TU101]. Measure the voltage at Pin 17 of [IC101]. Adjust L103 [A Board] to obtain a voltage of 2.5V +/- 0.3V.
SYSTEM L BAND 1 I.F ADJUSTMENT
1. 2. 3. 4. Input a 34.0MHz carrier signal at 100dBuV to Pin 11 [IF output] of the tuner [TU101]. Select `system L' + C00 [channel 00]. Measure the voltage at Pin 17 [IC101]. Adjust RV101 [A Board] to obtain a voltage of 2.5V +/- 0.3V.
SUB BRIGHTNESS ADJUSTMENT
1. 2. 3. Input a Phillips colour pattern. Press `TEST' `TEST' 13 on the Remote Commander. Adjust the `Sub-Brightness' data so that there is barely a difference between the 0 IRE and 10 IRE signal levels. 1. 2. 3. 3. 4.
TUNER AGC ADJUSTMENT
Receive a signal of 65dBuV / 75 ohm terminated, via the tuner antenna socket. Connect a voltmeter to JW130 [A Board]. Enter into the `Test Menu'. Select the `AGC Adjust' menu item. Adjust the data using the Yellow and Green buttons on the Remote Commander to obtain a voltage of 3.0V +/- 0.2V.
SUB CONTRAST ADJUSTMENT
1. 2. 3. 4. 5. Input a video signal that contains a small 100% white area on a black background Set the picture control to maximum. [`TT01'] Connect an oscilloscope to Pin 1 of CN504 [A Board]. Enter into the `Picture' service menu. Adjust the `R - Drive' data to obtain the following waveform.
25" 2.21V +/- 0.01V 29" 2.52V +/- 0.01V
A
RV101 IC101
17
R - out Waveform
SUB COLOUR ADJUSTMENT
1. 2. 3. 4. Receive a PAL colour bar signal. Connect an oscilloscope to Pin 3 of CN504 [A Board]. Enter into the `Picture' service menu. Adjust the `Sub Colour' data so that the Cyan, Magenta and Blue colour bars are of equal levels as indicated below.
L103
11
JW130 TUNER
Same Level
A Board component side
B-Out Waveform
21
KV-25K5/29K5
DEFLECTION SYSTEM ADJUSTMENT
1. 2. Enter into the `Geometry' service menu. Select and adjust each item in order to obtain the optimum image.
V SIZE
V LIN
GEOMETRY
V centre V size V Lin S Corr H Cent H Size Pin Amp Corner Pin Pin Phase V Bow V Angle Upper V Lin Lower V Lin Left HBLK Right HBLK CD Mode (AV)
Adj Adj Adj Adj Adj Adj Adj Adj Adj Adj Adj Adj Adj 07 07 01
S CORRECTION
V CENTRE
H CENTRE
H SIZE
PIN AMP
PIN PHASE
CORNER PIN
V ANGLE
22
KV-25K5/29K5
4-2. TEST MODE 2:
Is available by pressing `TEST' button twice, OSD `TT' appears. The functions described below are available by pressing the two numbers. To release the Test mode 2, press 0 twice, or switch the TV into stand-by mode, or press the TV button on the remote commander.
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
Cancel Test mode Picture maximum Picture minimum Volume 35% Volume 50% Volume 65% Volume 80% Ageing mode On/Off Set shipping conditions Display TV Status No function Sub Picture Adjustment Sub Colour Adjustment Sub Brightness Adjustment Text H position Adjustment Rotation test Picture level 50% Audio mute ON Disable Blanking No function No function Destination A Destination L Destination E Destination U Destination D Destination B Destination K Destination R No function No function Audio shutoff Disable/Enable RGB priority Disable/Enable Rotation On/OFF Text language East/West Wide CRT/4:3 CRT VM ON/OFF test No function No function No function No function Re-initialize the NVM [Only when Prog=59]
42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 -100
Re-initialise geometry settings [Only when Prog=59] No function No function No function No function No function Set NVM as NON Virgin [Only when Prog=59] Set NVM as Virgin [Only when Prog=59] No function No function No function No function No function No function No function No function No function No function No function Auto AGC Adjust Alternative Dest B Autotuning Enable/Disable Y/C input Signal Quality Check for Auto Tune Signal Quality NOT Checked for Auto Tune No function Manual AGC Adjust No function
23
KV-25K5/29K5
4-3. FE-1 SELF DIAGNOSTIC SOFTWARE
The identification of errors within the FE-1 chassis is triggered in one of two ways :- 1: Busy or 2: Device failure to respond to IIC. In the event of one of these situations arising the software will first try to release the bus if busy (Failure to do so will report with continuous flashing LED) and then communicate with each device in turn to establish if a device is faulty. If a device is found to be faulty the relevant device number will be displayed through the LED (Series of flashes which must be counted) See Table 1., non fatal errors are reported using this method. Each time the software detects an error it is stored within the NVM. See Table 2.
How to enter into Table 2
Table 1
ERROR No error Not allowed (may be confused with Sircs response flash!) Protection circuit trip < ANY TIME > Reserved No vertical sync AKB IIC bus clock and/or data lines low at Power ON NVM no IIC bus acknowledge at Power ON Jungle controller no IIC acknowledge at Power ON Tuner no acknowledge at Power ON Sound processor no acknowledge at Power ON LED ERROR COUNT 00 01
1. 2.
Turn on the main power switch of the TV set and enter into the `Standby Mode'. Press the following sequence of buttons on the Remote Commander.
i+
02 03 04 05 06 07 08 09 10 Error 2 3 4 5 6 7 8 9 10
(ON SCREEN DISPLAY)
5
(DIGIT 5) (VOLUME -) (TV)
3.
The following table will be displayed indicating the error count.
Table 2
Times -
Flash Timing Example : e.g. error number 3
StBy LED ON ON ON
OFF
OFF
Note: To clear the error count data press `80' on the Remote commander.
24
5-1 BLOCK DIAGRAMS (1)
CN201
A(
TUNER, POWER SUPPLY HV OUT AUDIO, MICRO CONTROLLER/TEXT YC JUNGLE VIF DECODER
)
IC101 VIF/SIF DEMODULATOR
AF OUT 8
4 1
R AUDIO
TO SPEAKERS
L AUDIO
CN208
2 4
L AUDIO IN R AUDIO IN L AUDIO OUT R AUDIO OUT
PH601 ISOLATOR
IC501 V OUTPUT VD+
CN606 TO H1 BOARD CN908 TO H1 BOARD CN604
1
3 2 4
2 VP 1 +B VD-
7
IN BOOST REF OUT 5 V- DY+ V- DY6 5 4 3 2 1
DY ASSY
V- DY+ V- DYV DY H- DYH- DYH- DY+ H- DY+ H DY H- DYH- DY+
VIDEO AMP Q408, 409
HD
1 5
3
1
SCL
QSS 12
CN101
1 2 5
SCL SDA SIF RST
LINE FILTER T601 CN603
1 2
TU101
IF1
SWF 103
DET OUT 16
IC001 MICRO CONTROLLER BUFFER Q101 SYNC SEP Q005, 004
8 0-COIN 0-MSP/ASW 21 BE/DK/I 4 9 0-RFAGC I-AFT 0-V BLK 17 3
SDA
RELAY RY601
MAIN RECT D601
DGC CHECK DGC CHECK
3
4 6
MONO R1 L1 R2 L2
BUFFER Q107
SWF 101 SWF 102
1 2
VIF VIF STAND SW RF 3 AGC 22 AFC 17
T603 SRT IC531 PIN CORRECTION
11 4 12 5
23 SIF 24 SIF 14 TU AGC 7
BUFFER Q012
9
IC201 AUDIO AMP
5 L IN/IN 2 STBY R IN/IN 3 1 VOLUME L OUT/NC 2 VAR R/SW R OUT/OUT 14 12 VAR/L MON OUT
10 11 12
4
TO S1 BOARD CN1101
DGC
CN602
1 3 DGC DGC IC606 POWER
FBO CP 1 VCC 4 D 3
D605 +B RECT
1
EW IC603 ERROR AMP
2
5 6
7 +
AGC
PIN OUT Q532
LIL SW 0- +B DROP 18 0-VOL 2 10 AGC MON 14 AGC DEFEAT 0-SP MUTE 30 9 3
HP PROTECT
13
14 15
TVR OUT TVL OUT
D614 RECT
+B AUDIO VCC IC604
3 2
+ 1 -
S 2
7 8
14
SCL SDA
SWITCH Q006
16
R AUDIO OUT
10 MUTE NC/IN 2 6
17
L AUDIO OUT
CN007
KEY 4 KEY RESP
RELAY SWITCH Q601
15 16
D610 RECT
1
D511
CN502
1 2 1000V 200V H1
15 0-BAND-M
TO H BOARD CN907
RESP 6
SWITCH Q109,110
STBY 5V
IC005 SWITCH SCART MATRIX
16 0-BAND-L 20 0-BAND-L
IC301 Y/C JUNGLE
OSD BLK 35 29 INT BLK
5VREG
3
+5V
J404
IC605
4 O-KEY/SCART 13 I-KEY/SCART 9
14 I-KEY 11 I-KEY-SCART R 34 6 0-KEY SCART G 33 32 INT R2 IN
TO C BOARD CN701
SIRCS
7
SIRCS
CN001
AGC SCLI SDAI CS
5 2 3 4
I-KEY/SCART 1/2 10
12 I-KEY
12 0-SCART 1/2 B 32
AMPLIFIER Q007,008, 009
J401 A6
A2 A1 B1
L AUDIO IN L AUDIO IN 2 DET R OUT
1
9VREG
3
+9V
31 INT G2 IN 30 INT B2 IN
T602
MUTE SW Q202
LOW B
5 4 1 4
T801 FBT HV
TO PICTURE TUBE
I MODE 1 15 SCLI SDAI I MODE 2 11
19 0-LED 0-WP 7 48 I-PROCDES 8 7
SDA SCLO SDAO SCL
35 SDAO 34 SCLO
MON R OUT
1 5 4
C D
B3
MON L OUT
IC004 NVM
6 5
A3
DET L OUT
IC609 STANDBY POWER +B
3
FV
CN509
DF 1
A19
MON OUT 6
MON OUT B8 A8
DET V OUT MODE
7
3
HP IC608 STBY +5V
D632 RECT
D571, Q571,574
5 6
13 12
TO VM BOARD CN1809 29" only
29" only CN505
6 NS CORRECT
IC003 RESET
1
43 RESET
MODE
5V REG
T531 HDT HD
A7 MON OUT
EXT CVBS 24 EXT B IN 26 BLUE
ABL
11
A11
TO VM BOARD CN1705
BUFFER Q013
1
0-ROT/VC
0-XRAY PROT 52 0-STBY 51 HP 36
SWITCH Q011
EXT G IN 27
GREEN
A15
EXT R IN 28 EXT BLK 25 18 HP PROTECT Y/CVBS IN 41 RED
H-DRIVE Q535
H-OUT Q533
10 9 8
D513 +15V RECT 1
CN503
29" only
A16
BLK
5
TO VM BOARD CN1803
D-N-C
VM OUT
5
42 X-OUT
A20
V IN
B2
ABL ABL IN 3 EW VD+ VDAUDIO R IN 7
X001 12MHZ
41 X-IN
VP 37
B6
AUDIO L IN
CN406
43 TV/C2 IN
EW 11 VD+ 13 VD- 14 15 VM OUT 48 XTAL 1 HD 19
B15
C IN
D514 -15V RECT -15V
B20
YV IN
AUDIO L
8 6 4
2
AUDIO L AUDIO R Y/CVBS C
47 XTAL 2
TO H BOARD CN906
AUDIO R Y/CVBS C
HD
CN504
1
RED
R OUT 22 G OUT 23
2
GREEN
3
2 4 CI IN Y1/CVBS IN B OUT 24 BLUE
TO C BOARD CN703
6
IK IN 21 IK
25
26
27
28
5-1 BLOCK DIAGRAMS (2)
CN1101
SCL SDA SIF 1 2 5 6
IC1901 COMPARATOR
2 + 1 3 -
S1
(STEREO DECODER)
IC1101 STEREO DECODER SCL SDA XTAI IN
18
5-2. CIRCUIT BOARD LOCATION
XTAI OUT
17
Reference Information
RESISTOR RN RC FPRD FUSE : METAL FILM : SOLID : NON FLAMMABLE CARBON : NON FLAMMABLE FUSIBLE : NON FLAMMABLE METAL OXIDE : NON FLAMMABLE CEMENT : NON FLAMMABLE WIREWOUND : ADJUSTMENT RESISTOR COIL LF-8L TA PS PP : MICRO INDUCTOR : TANTALUM : STYROL : POLYPROPYLENE : MYLAR : METALIZED POLYESTER : METALIZED POLYPROPYLENE : BIPOLAR : HIGH TEMPERATURE : HIGH RIPPLE
4 5
C Board
29" models only
12 SIFI 29 MONO IN 33 34 36 37
MONO
+9V
VM (
VM AMP, QP, DYNAMIC FOCUS ROTATION AMP
)
TO A BOARD CN101
9 R1 10 L1 11 R2 12 L2 14 TVR OUT TVL OUT AUDIO R OUT AUDIO L OUT
SCART 1 IN R SCART 1 IN L SCART 2 IN R SCART 2 IN L
SCART 1 OUT SCART 1 OUT MAIN OUT R MAIN OUT L
TVR OUT
47
S601
TVL OUT
48 60 61
POWER CN603
H1(
AUDIO/VIDEO IN, HEADPHONE JACK, AUDIO OUT JACK, SIRCS RECEIVER, FUNCTION SWITCH
)
CN604
1 2
VM Board
RS RB RW
29" only
S1 Board
AUDIO R OUT AUDIO L OUT
1 2
5 6
7 +
TO A BOARD CN606
CN907
KEY 4
CAPACITOR
FUNCTION SWITCH S900-S902 REMOTE CONTROL RECEIVER IC900
IC1801 ROTATION AMP
TVR OUT 15
CN1801
H1 Board
TVL OUT 16 R AUDIO OUT
TO A BOARD CN007
RESP SIRCS 6 7
2 1
6
7 +
+9V
ROT +
1
CN1705
7 V PULSE NS CORRECT VM
5
TO ROTATION COIL
1
A Board
PT MPS
2 3
+ -
ROT -
3
L AUDIO OUT
17
TO A BOARD CN505
6 5
5-3. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS
CN908
AUDIO L OUT 2 1 5 4
MPP ALB ALT ALR
Note :
· ·
J900 HEADPHONES
VM AMP Q1701, 1702, 1708, 1709
VM AMP BUFFER Q1704
NECK ASSY
VM OUT Q1703,1704
VM GND QP+
2 4 6 8 QP VM
TO A BOARD CN208
AUDIO L IN AUDIO R IN AUDIO R OUT
·
All capacitors are in µF unless otherwise noted. pF : µµF 50WV or less are not indicated except for electrolytic types. Indication of resistance, which does not have one for rating electrical power, is as follows. Pitch : 5mm Electrical power rating : 1/4W
Note: The components identified by shading and marked £ are critical for safety Replace only with the part numbers specified in the parts list.
CN1803 TO A BOARD CN503
1 15V PULSE
BUFFER Q1840, 1841
+9V
2 3
QPIC1902 DF COMPARATOR
1 +
CN703
QP
1 2
R G B CUT OFF
R DRIVE, BKG Q702, 703
R OUT Q704
R
5 6
+ 7 -
T1901
DF
1
CN1809 TO A BOARD CN509
TO A BOARD CN504
· ·
G PICTURE TUBE
AUDIO L AUDIO R
3 6
CN906
2 4
CN900
Chip resistors are 1/10W All resistors are in ohms. k = 1000 ohms, M = 1000,000 ohms : nonflammable resistor. : fusible resistor. : internal component. : panel designation or adjustment for repair. All variable and adjustable resistors have characteristic curve B, unless otherwise noted. All voltages are in Volts. Readings are taken with a 10Mohm digital mutimeter. Readings are taken with a color bar input signal. Voltage variations may be noted due to normal production tolerences. : B + bus. : B - bus. : RF signal path. : earth - ground. : earth - chassis.
G DRIVE, BKG Q705, 706
G OUT Q 707
L R VIDEO
· ·
Y/C
Note: Les composants identifies par une trame et par une marque £ sont d'une importance critique pour le securite. Ne les remplacer que par des pieces de numero specifie.
B DRIVE, BKG Q708, 709
B OUT Q710
B
H
R C V
G 2
G 4 H V
TO A BOARD CN406
Y/CVBS C 6 8
1 3 4 2
· · ·
CN701
1 G2 H1 +200V H2 H2 D711 PROTECT RCV RV702 G2 (1000V) RV701 G2
TO A BOARD CN502
2 6
· · · ·
· · ·
TO A BOARD T511 (FBT)
H STAT
C
SCREEN (RGB OUT)
· ·
29
30
31
32
WAVEFORMS A BOARD
1 PAL 1 SECAM 2 PAL 2 SECAM 3
1.0 Vp-p (H) 4 5
1.3 Vp-p (H) 6
1.0 Vp-p (H) 7
1.3 Vp-p (H) 8
2.6 Vp-p (H)
2.6 Vp-p (H) 9 10
0.5 Vp-p (H) 11
5.0 Vp-p (H) 12
1.4 Vp-p (H) 13
2.0 Vp-p (H)
146 Vp-p (V) 14 15
12 Vp-p (H) PAL 15
142 Vp-p (H) SECAM
56 Vp-p (V)
290 Vp-p (H)
1.1KVp-p (H)
2.4 Vp-p (H)
3.0 Vp-p (H)
WAVEFORMS C BOARD
1 2
102 Vp-p (H) 3 4
95 Vp-p (H)
93 Vp-p (H)
24 Vp-p (H)
5-4 SEMICONDUCTORS
CD4052BCM
16 9
64 32 LETTER SIDE
STR-F6654
TDA9875 TDA9870
2SA1837
2SA933AS-QRT 2SA933AS-RT 2SC1740S-RT
1 (TOP VIEW)
8
1 ( TOP VIEW ) B C E E C B 31
1
ERA81-004TP1 ERA83-006 MTZJ-T-77-3.9B MTZJ-T-77-5.6B MTZJ-T-77-5.6C MTZJ-T-77-6.8A MTZJ-T-77-6.8C MTZJ-T-77-7.5C MTZJ-T-77-9.1A MTZJ-T-77-9.1A MTZJ-T-77-10
MTZJ-T-77-33A MTZJ-33C MTZJ-7.5B RD3.9ES-B2 RD5.6ESB2 RD6.8ES-B2 RD7.5ESB2 RD9.1ES-B3 1SS119-25TD 1SS133T-77
LM358DR-EZ NJM4558M-TE2 NJM2903D
8 5
5
CATHODE
TOP209P STV9379
8 5
2SC4793
2SK2251-01-F19
1 4 ( TOP VIEW ) 1 4 ( TOP VIEW )
ANODE
LM393P TDA2822M TEA2124
8 7 6 5
B 1 3 2 5 4 7 6
C
E
SEL12108-D TYA7805CTV TYA7809CTV BF871-127
E B C
ST24W08FM6TR
1 2 3 4 8 5
( TOP VIEW )
SAA5497PS/MIA/038 SAA5497PS/MIA/039 SAA5497PS/MIA040
52 27
E 1 4
B
C
( TOP VIEW )
BF421-AMMO 2SA1091-O TDA7495
1 ( TOP VIEW ) 26
SBX1981-51
DTA144ESA DTA144ESA-TP DTC114EK DTC114EKA-T146 DTC143TKA-T146 DTC144EKA-T-146R 2SA1037K-T-146R2SA1162-G 2SC2412K-QR 2SC2412K-T-146-R
AK04-V1 AU-012-V1 BYD33G BYD33GAMMO DINL20-TR ERB44-06TP1 EG-1Z-V1 EL1Z ERD28-06S
ERD28-08S ERC06-15 FMN-G12S RG1CLF-B1 RGP10GPKG23 RU3YX-LF-C4 RU3YX-V1 RU-4AM-T3 1SS292T-77
CATHODE ANODE
UF4005PK623
ANODE
CATHODE CATHODE
1 15
E
C
B
C
ANODE
E
2SC688-LK SE-135N SE135N-LF12 TDA9818-V1 TDA9817-V1
24 13
B
DAN202K DAN202K-T146 IRF614
3
1 ( TOP VIEW )
12
1 2
3 1 2
1 V OUT 2 V IN 3 GND
E C B B C E
2
3
1
53
54
5-5. IC BLOCK DIAGRAMS
A BOARD IC201 TDA7495
A BOARD IC501 STV 9379
2 6 3 2
VOLUME
FLYBACK GENERATOR
1 1 14
30K OP AMP
POWER AMPLIFIER
5 9
7
+
THERMAL PROTECTION
5
MUTE/STBY PROTECTIONS VOLUME 60K
10
12
30K
4
OP AMP
A BOARD IC101 TDA9817/V1
22 15 4 6 7 19 18 17 21 20
3
4
14
TUNER AGC
VIF AGC AFC DETECTOR
VOLTAGE REFERENCE
A BOARD IC606 STR-F6654
4
3
1 2 VIF AMPLIFIER VCO TWO
START
VIDEO DEMODULATOR AND AMPLIFIER 16
O.V.P
LATCH
FPLL
DRIVE 2
REG
23 24
SIF AMPLIFIER
QSS MIXER INTERCARRIER MIXER AM DEMODULATOR
T.S.D
8
O.S.C Iconst 1
SIF AGC
INTERCARRIER MODE SWITCH
FM-PLL DEMODULATOR
5
3
12
13
9 10 11
5
A BOARD IC301 CXA2060AS
45 48 47 46 5 1 15 39 38 37 36 28 27 26 25 32 31 30 29 42 3 CLAMP RGB 2/2 ABL/PEAK LIM AKB 21 C VCO 4.433619MHz 3.579545MHz 9.582058MHz
APC
PAL/NTSC DEMOD
SW NTSC PAL,SECAM KILLER
EYUV CLAMP YUV SW YUV OUT COLOR AMP AXIS Y/C MIX RGB CLAMP VPROT VM AMP (OFF YS/YM)
ACO DET.
DYNAMIC COLOR
CUTOFF CONT
DRIVE AMP
BRIGHT CONT
PICTURE AMP
GAMMA AMP
YS1 SW
CHROMA AMP
DEEMPHASIS
R/G/B BLK
Y32 SW
CLAMP
YM SW
COLOR SYSTEM DISCRIMINATOR PAL ID PAL/NTSC COLOR KILLER SECAM ID
LINE BLK
1H DELAY LINE (PAL/SECAM) DPIC CLAMP DC TRAN
24 23 22
BPF PAL 4.43MHz NTSC 3.58MHz
BELL FILTER (ZAP)
LIM AMP
PLL SECAM FM DEMOD
SECAM VCO CAL. by 4.43MHz
DAC SW
PC BUS DECODER STATUS I/T
35 34
ACC AMP
ACC AMP
ACC DET
FILTER ALIGNMENT
43 2 41 4 7 9 6 CHROMA SW
ATT
TRAP PAL 4.43MHz NTSC 3.58MHz SECAM 4.2 - 4.43MHz COUNT DOWN
DL PAL/NTSC 300 x 200nS SECAM 300 x 200nS LINE COUNTER V TIM GEN
SHARPNESS DL SHARPNESS AMP
WIDE SAW FUNC
VD SAW FUNC
14
13
Y SW V SYNC SEP
MONITOR SW VIDEO SW