SERVICE MANUAL Colour Television Model No. CZP3024TX (New Zealand) Service Ref. No. CZP3024TX- 00 G Specifications Power Source ....................AC220-240V. 50Hz Power Consumption ..........48W Television System, ............ B/G Colour System ................... PAL Channel Coverage . ...........VHF. ‘1 – 11 UHF21–69 Video IF .............................38.9 MHz Sound IF ............................33.4 MHz \ Aerial Input impedance.....75 Q ! Picture Tube ,.,., .................34cm diagonal(useful screen), 90degree deflection Sound Output ....................2.OW ,. Ext. Terminals ...................video Input x 1, Audio Input xl Dimensions .......................360(W) x 328(H) x 378(D)mm Weight ...............................approx. 10Kg Specifications subject to change without notice. PRODUCT CODE: 111310715 Oriuinal Version Ch%sis Series A3 – B14 Give complete” Service Ref. No. “ for parts order or servicing, it is showh on the rating plate at the cabinet back of the unit. This TV receiver will not work properly in a foreign countries where the television trans- mission system and power source differ from the design specifications. Refer to the specifications for the design specifications. - E3CT REFERENCE No.WM – 520239
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SERVICE MANUAL Colour Television Model No. CZP3024TX(New Zealand)
Service Ref. No. CZP3024TX- 00
G Specifications
Power Source ....................AC220-240V. 50HzPower Consumption ..........48WTelevision System, ............B/GColour System ...................PALChannel Coverage . ...........VHF. ‘1 – 11
UHF21–69Video IF .............................38.9 MHzSound IF ............................33.4 MHz
Dimensions .......................360(W) x 328(H) x 378(D)mmWeight ...............................approx. 10Kg
Specifications subject to change without notice.
PRODUCT CODE: 111310715
Oriuinal VersionCh%sis Series A3 – B14
Give complete” Service Ref. No. “ for parts orderor servicing, it is showh on the rating plate at thecabinet back of the unit.
This TV receiver will not work properly in aforeign countries where the television trans-mission system and power source differfrom the design specifications.Refer to the specifications for the designspecifications.
-
E3CT REFERENCE No.WM – 520239
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INSTALLATION AND SERVICE ADJUSTMENT
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1. Tune the receiver to the monochrome 2.circure pattern.
2. Set the brightneea and the contraatto maximum.
3. If the picture ia too wide or narrow,cut or short the lead (AJ1 ) on themain unit.
if “AJ1” is shorted, horiz. widthincreaee.If “AJ1” ia cut, horiz. width decreaee.Note: Horiz. width adjustment affecta
the high voltage and the aubbrightneae.Therefore, recheck the aubbrightneea and the high voltage.
Tune receiver to colour bsr psttem.
(see Fig. 1)
Connect the oecillstor to TM
Adjust VR121for lWpp esshownin
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–2–Fig.1 (PAL coiour bar pattern)
I SAFETY PRECAUTIONS : An isolation transformer should be connected in the power line between the receiver and the ACline before any service is performed on the receiver.
X- RADIATION PRECAUTION The primary source of X- RADIATION in television receiver is the picture tube. Thepicture tube is specially constructed to limit X- RADIATION emission. For continued X- RADIATION protection, the replacementtube must be the same type as the original including suffix letter. Excessive high voltage may produce potentially hazardous X-RADIATION. To avoid such hazards, the high voltage must be maintain within specified limit. Refere to this service manual forspecific high voltage limits. If high voltage exceeds specified limits, take necessary corrective action. Carefully follow the instructionsfor + B1 volt power supply adjustment, and high voltage check to maintain the high voltage within the specified limits.
AGC ADJUSTMENT
NOTE; Do not attempt this adjustment with weak signal.
1. Tune the receiver to the most clearest (or strongest) VHF
station in your area. Set the brightness and the contrastcontrols to maximum. Set the colour control to minimum.
2. Set the AGC (VRl 01 ) control to mid- range.
3. Turn AGC control in direction which causes the snow toappear, then in the opposite direction until the snow justdisappears.
SUB BRIGHTNESS ADJUSTMENT1. Connect a DC meter between “TP - H“ (positive lead) and
“TP - G“ (negative lead) on the main unit.2, Receive the circular pattern.
3. Set the brightness to maximum and the contrast tominimum.
4. Adjust the sub brightness control (VR211 ) for 0.2V.
NOTE: If the picture tube replaced, check the sub-brightness adjustment.
VERTICAL SIZE ADJUSTMENT1. Tune the receiver to the monochrome circular pattern.
2. Adjust the vertical size (VR451 ) control for full scan.
HORIZONTAL CENTER ADJUSTMENT1. Tune the receiver to the monochrome circular pattern.
2. Set the brightness and the contrast to maximum.
3. Adjust the video phase (VR411 ) for optimum horizontalcenter position.
B1 POWER SUPPLY ADJUSTMENT1. Connect DC meter to “TP - B“ and the ground.
Set the + B1 adjustment control (VR351 ) to mid-range.2, Set the brightness and the contrast to minimum.
Tune the receiver to an active channel and the synchronize
picture.
3. Adjust+ B1 adjustment control for 130 f 1.0 volt DC.
TUNING DISPLAY WIDTH ADJUSTMENT
1. Tune the receiver to the monochrome circular pattern.
2. Press and hold the recall button of the remote control unitfor more than 2 second.
3. Press”1” button of the channel selector of the remotecontrol unit, and the tuning bar is displayed on the screen.
4. Adjust VR71 O for optimum tunning bar width.
5. Press recall button, and the tuning bar is disappears.
GREY SCALE AND TRACKING ADJUSTMENT1. Tune the receiver to the monochrome circular pattern.
2. Set the brightness and the contrast to maximum,
the colour to minimum.
3. Set the service switch (SW251 ) at the service side.4. Set the drive volume (VR602 andVR612) at their
mechanical center.
5. Set the bias volume (VR601, VR621 and VR611 ) to
minimum, (fully counter clockwise).
6. Turn the screen volume to obtain just visible onecoloured line.
7. Adjust each bias volume (VR601 - blue, VR621 - greenand VR611 - red) alternately until a dim white line
produced.
8. Set the service switch (SW251 ) at the normal side.
9. Adjust the drive volume (VR602- blue andVR612- red)alternately to produce normal black and white picture.
10.Check for proper grey scale tracking at all brightnesslevels.
NOTE: If grey scale adjustment is made after picture tubereplacement, check high voltage and sub- brightness
20LOUR ADJUSTMENT (PAL)
3eceive the colour bar pattern.
jet the brightness, contrast and the colour to maximum,
I ADJUST I REMARKS
adjustment.FOCUS ADJUSTMENT
Adjust the focus control on the left side of the chassis for wellscanning lines.
HIGH VOLTAGE CHECK1. Tune the receiver to the circular pattern.
2. Set the brightness and the contrast to maximum.
3. Connect a high voltage probe to anode lead of the picturetube.
4. The high voltage must be between 20- 22KV,
NOTE: If the picture tube replaced, check the high voltage.
—
—3—
PURITY AND CONVERGENCE ADJUSTMENT- CAUTION ; Convergence and purity have been factory aligned. Do not attempt to tamper with these alignments. However, the
effects of adjacent receiver components, or replacement of picture tube or deflection yoke may require the need to readjustpurity and convergence. If adjustment is required, the adjustments should be made in the following sequence.
PURITY ADJUSTMENTS1. Use a colour (Red, Green and Blue) pattern signal. Receiver
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4.
5
should be operated for at least ten minutes.Place the picture tube face east or west and demagnetizethe picture tube and receiver using an external degaussingcoil.Turn off red and blue rasters and provide only green rasteron CRT screen.Loosen the screw holding the deflection yoke and removethe three D.Y. wedges, and slide the deflection yoke fullyfrontward.Rotate the two Duritv maanet tabs (widen or narrow themutual angle made by th= two tabs) to center a verticalgreen stripe. (If the vertical green stripe doesn’t beobtained, slide the deflection yoke backward)
NOTE: Do not move the vertical center position by adjustingpurity magnet.
6. Slowly slide the deflection yoke backward (or frontward)
b until a uniform green raster is obtained.
Note:If some part of screen is contaminated with other colors (inmost cases it will appear at corner of screen), put the puritycorrection magnet chip on back of that corner near thedeflection yoke.
See Figure - A to position the purity correction magnet chip.Slide and rotate the purity correction magnet chip until puregreen screen is obtained.Use necessary chips until uniform green is obtained overallthe screen. Use the tape (or adhesive) to fix the magneton the picture tube.
Check the purity of the red and blue rasters foruniformity, (Turn up red raster and turn off green and bluerasters.Turn up blue raster and turn off green and redrasters). Readjust the deflection yoke position if necessaryuntil all rasters are pure.If part of the screen at each direction (east, west, north orsouth) is colored, demagnetize the receiver and the picturetube and adjust the deflection yoke position slightly front -ward or backward.Tighten the mounting screw of the deflection yoke andmount D.Y.wedges.
CONVERGENCE ADJUSTMENTSBefore any convergence adjustments are made, purity must
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be adjusted properly. Connect cross - hatch generator toaerial socket. Loosen locking ring provided on purity andconvergence magnet.
Note: When adjust the convergence magnets, do not movepurity magnets.
D.Y. wedge
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[Purity and convergence magnets]
—4—
CENTER CONVERGENCE1. Turn off green raster and provide blue and red raster on
CRT.2. To superimpose the red/blue vertical Iines,spread (or
narrow) the angle of magnet tab 1 and tab 2. See Fig-1.3. To superimpose the red/blue horizontal Iines,rotate
the magnet tabs 1 and 2 together (keeping the angle ofmagnet tabs 1 and 2). See Fig-1.
4. Turn up green raster.5. To superimpose the green and magenta (blue/red) vertical
lines, spread (or narrow) the angle of magnet tab 3 andtab 4. See Fig.2.
6. To superimpose the green and magenta (blue/red) horizontallines, rotate the magnet tabs 3 and 4 together (keepingthe angle of magnet tabs 3 and 4). See Fig-2.Now forming white cross- hatch pattern at center of screen.Fasten locking ring.
OUTER AREA CONVERGENCEIf the misconvergence on the outer area exists, adjust asfollow.
Swing the deflection yoke the - direction, red/blue lines onthe screen move the ~ direction.
Swing the deflection yoke the + direction, red/blue lines onthe screen move the ~ direction.Fastening the deflection yoke, insert and fix the D.Y. spacer.
Green
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Spread (or narrow) tabs angle tosuperimpose blue and red vertical line.
Keep AGC voltage which isadjusted at AGC volt –alignment, and adjust T131for 38.9 MHz marker is juston the reference line.
+
f=38.9MHz (Note2)
Iotel: PAL only model does not have Q293 (SW.TR.) . This connection is not necessary for
‘AL only model.
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—7—
– CABINET PARTS LIST
Note: Parts order must contain Service Ref. No., Key No. and Description.
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KeyNo. Part No. Description
1. 6102267938 Power Button
6102298406 Spring (for Power Button).
2. 6102267952 Transparent Panel
3. 6102387377 Door
4. 6101053174 Push Latch
5. 6102387360 Control Indicate Sheet
6. 6101046442 SANYO badge
7. 6102327038 Cabinet Front Ass’y
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KeyNo. Part No. Description
8. 6102266214 Cabinet Back
6102387520 Rating Sheet
6100982659 Leg (2 used)
6102327120 Cover
9. 6100116405 Rod antenna ass’y
or610 2171006 Rod antenna ass’y
10. 6102119299 ANT matching box
11. 6102248302 Remote Control Transmitter “JXKE”
—8—
CPU REPLACEMENT : IMPORTANT NOTEWhen IC701 (M50439- 628SP) is replaced,it is necessary to make the initializing of IC701 as followingprocedure.
(1) Switch off the TV set.(2) Replace IC701.(3) Switch on the TV set.(4) Select programme position”1” directly with the remote control transmitter.(5) Press and hold the Recall key (of the remote control transmitter) for more than 2 seconds, and input
SPECIAL CODE “01” using the programme selector of the remote control transmitter.(6) Press the MEMORY button of the remote control transmitter.
REMARKS: If there is mistaking the procedure, switch off the TV set and repeat steps (3) to (6).
The initializing is now completed.
Next ,operate the pre - setting of stations to allocate the TV channels.Refer to the instruction manual for this TV set.
-
—9—
E3CT
CHASSIS ELECTRICAL PARTS LIST
Product safety should be considered when a component replacement is made in any area ofa receiver.Components indicatedby a A mark inthispartslistand the circuit diagram show components whose value havespecial significance to product safety. It is particularly recommended that onlypartsspecifiedon thefollowingpartslistbe used forcomponents replacementpointedoutby themark.
* Note: Part order must contain Service Ref. No.,Part No.,and descriptions. The main PCB unit will be supplied without tuner andflybacktransformer.They shouldbe orderedseparately.
Read description in the Capacitor and Resister as follows:CAPACITOR II Ref. No. I Part No. I Description
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CERAMIC 100P K 50V
TT ~ dI-~ Rated VoltageTolerance SymbolsLess than 10PF
CEFiAMIC .............CeramicMT- PAPER ..........Metallized PaperPOLYESTER .........Polyester~- PO LYEST ......Me~allized PotyesterPOLYPRO .............PolypropyleneMT- PO LYPRO .....Metallized PolypropyleneCOMPO FiLM ........ComrxAte film
0.56 JA lW3.3 JA lW10K JA 1/6W6.8K JA 1/6W75 JA 1/4WlK JA l/6W
2.2K JA l/6WlK JA l/6W
100K JA 1/6W2.2K JA 2W10K JA 1/6W
4.7K JA l/6W10K JA l/6W68K JA l/6W100K JA 1/6W68K JA 1/6W12K JA l/6W1.8K JA l/6W390K JA 1/6W560K JA 1/6W100 JA l/6W10K JA 1/6W10K JA 1/6W
3.9K JA 1/4W10K JA 1/6W10K JA 1/6W10K JA l/6W
4.7K JA l/6W18K JA 1/6W47K JA l/6W1.5K JA l/6W8.2K JA l/6W4.7K JA 1/6W10K JA 1/6W39K JA 1/6W470 JA 1/6W27K JA 1/6W3.3K JA 1/6W330 JA 1/6W27K JA 1/6W10K JA l/6W
2.2K JA l/6W2.2K JA l/6W2.2K JA l/6W2.2K JA l/6W100 JA 1/6W
5.6K JA 1/6W47K JA 1/6W1.8K JA l/6W820 JA 1/6W560 JA l/6W2.2K JA l/6W18K JA 1/6W39K JA 1/6W4.7K JA 1/6W22K JA 1/6W10K JA 1/6W18K JA l/6W27K JA 1/6W4.7K JA 1/6W47K JA 1/6W18K JA 1/6W68K JA 1/6W39K JA 1/6W22K JA 1/6W22K JA 1/6W22K JA 1/6W
E3CT
Ref. No. Part No. Description Ref.No. PartNo. Description
U.ulu L Wv120P K 50V120P K 50V120P K 50VO.l UJ 63VO.l UJ 50V47UM 16V47UM 16V33PJ 50V33PJ 50V
O.oluz 50V47U M 16V
O.oluz 50V2200P K 50V220UM 16V
100 JA l/6W1.2KJA l/6W100 JA l/6W68K JA l/6W10K JA l/6W82 JA l/6W
3.3K JA l/6W5.6K JA l/6W560 JA l/6W1.2KJA l/6W1.2KJA l/6W1.2KJA l/6W3.9K JA l/6W3.3K JA l/6W1.8KJA l/6W1.8KJA l/6W1.8KJA l/6W1.8KJA l/6W1.8KJA l/6W1.8K JA l/6WlMJA l/6W
82K JA l/6W4.7K JA l/6W10K JA l/6W560JA l/6W1.8KJA l/6W470 JA l/6W470 JA l/6W4.7K JA l/6W470 JA l/6W10K JA l/6W
4.7K JA l/6W4.7K JA l/6W10K JA l/6W100K JA l/6W22K JA l/6W10K JA l/6WlKJA l/6W10K JA l/6W33K JA l/6W10K JA l/6W