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AV-21ETG2
AV-2124EE
Service Manual, Schematics, Parts List
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AV-21ETG2 AV-2124EE
SERVICE MANUAL
COLOUR TELEVISION
AV-21ETG2 AV-2124EE
!!
BASIC CHASSIS
CG
CONTENTS
! ! ! ! ! ! ! ! SPECIFICATIONS 2 SAFETY PRECAUTIONS 3 FEATURES 4 FUNCTIONS 5 MAIN DIFFERENCE LIST 6 SPECIFIC SERVICE INSTRUCTIONS 7 SERVICE ADJUSTMENTS 14 PARTS LIST 33 OPERATING INSTRUCTIONS STANDARD CIRCUIT DIAGRAM 2-1
1
COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD.
No. 51893 Dec. 2001
AV-21ETG2 AV-2124EE
SPECIFICATIONS
ITEM Dimensions(W×H×D) Mass TV RF System RF Mode Colour System VIDEO Mode Picture Tube High Voltage Receiving Frequency VHF (VL) VHF (VH) UHF CATV VIF Carrier Intermediate Frequency SIF Carrier PAL / SECAM / NTSC3.58 / NTSC4.43 Visible size: 51cm measured diagonally 26.5kV±1.5kV(at zero beam current) 46.25MHz168.25MHz 175.25MHz463.25MHz 471.25MHz863.25MHz Cable TVs of Mid (X-Z, S1-S10) Super (S11-S20) & Hyper (S21-S41) bands receivable 38.0MHz 32.5MHz(5.5MHz) 31.5MHz (6.5MHz) 32.0MHz (6.0MHz) PAL (4.43MHz), SECAM (4.40625MHz / 4.25MHz) NTSC (3.58MHz / 4.43MHz) AC110240V, 50 / 60Hz 90W (Max) / 60W(Avg) 5cm×9cm, Oval type×1 3W (monaural) 75 Unbalanced 1V(p-p), 75 (Front / Rear) 500mV(rms) (-4dBs), High impedance, RCA×2 (Front / Rear) 1V(p-p), 75 500mV(rms) (-4dBs), Low impedance, 3.5mm mini jack RM-C364GY (Battery size : AA / R06 / UM-3×2) AC220240V, 50 / 60Hz
CONTENT AV-21ETG2 AV-2124EE
497mm×454mm×478.5mm 21kg B/G, I, D/K, K1 PAL / SECAM
Colour Sub Carrier Frequency Power Input Rated Voltage
Power Consumption Speaker Audio Output Aerial Input Terminal Input Video Audio Output Video Audio Headphone jack Remote Control Unit
Design and specifications are subject to change without notice.
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No. 51893
AV-21ETG2 AV-2124EE
SAFETY PRECAUTIONS
1. The design of this product contains special hardware, many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Service should be performed by qualified personnel only. 2. Alterations of the design or circuitry of the products should not be made. Any design alterations or additions will void the manufacturer's warranty and will further relieve the manufacturer of responsibility for personal injury or property damage resulting therefrom. 3. Many electrical and mechanical parts in the products have special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the parts list of Service manual. Electrical components having such features are identified by shading on the schematics and by (! ) on the parts list in Service ! manual. The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement part shown in the parts list of Service manual may cause shock, fire, or other hazards. 4. Don't short between the LIVE side ground and ISOLATED (NEUTRAL) side ground or EARTH side ground when repairing. Some model's power circuit is partly different in the GND. The difference of the GND is shown by the LIVE : (") side GND, the ISOLATED(NEUTRAL) : (#) side GND and EARTH : ($) side GND. Don't short between the LIVE side GND and ISOLATED(NEUTRAL) side GND or EARTH side GND and never measure with a measuring apparatus (oscilloscope etc.) the LIVE side GND and ISOLATED(NEUTRAL) side GND or EARTH side GND at the same time. If above note will not be kept, a fuse or any parts will be broken. 5. If any repair has been made to the chassis, it is recommended that the B1 setting should be checked or adjusted (See ADJUSTMENT OF B1 POWER SUPPLY). 6. The high voltage applied to the picture tube must conform with that specified in Service manual. Excessive high voltage can cause an increase in X-Ray emission, arcing and possible component damage, therefore operation under excessive high voltage conditions should be kept to a minimum, or should be prevented. If severe arcing occurs, remove the AC power immediately and determine the cause by visual inspection (incorrect installation, cracked or melted high voltage harness, poor soldering, etc.). To maintain the proper minimum level of soft X-Ray emission, components in the high voltage circuitry including the picture tube must be the exact replacements or alternatives approved by the manufacturer of the complete product. 7. Do not check high voltage by drawing an arc. Use a high voltage meter or a high voltage probe with a VTVM. Discharge the picture tube before attempting meter connection, by connecting a clip lead to the ground frame and connecting the other end of the lead through a 10k" 2W resistor to the anode button. 8. When service is required, observe the original lead dress. Extra precaution should be given to assure correct lead dress in the high voltage circuit area. Where a short circuit has occurred, those components that indicate evidence of overheating should be replaced. Always use the manufacturer's replacement components. 9. Isolation Check (Safety for Electrical Shock Hazard) After re-assembling the product, always perform an isolation check on the exposed metal parts of the cabinet (antenna terminals, video/audio input and output terminals, Control knobs, metal cabinet, screwheads, earphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock. (1) Dielectric Strength Test The isolation between the AC primary circuit and all metal parts exposed to the user, particularly any exposed metal part having a return path to the chassis should withstand a voltage of 3000V AC (r.m.s.) for a period of one second. (. . . . Withstand a voltage of 1100V AC (r.m.s.) to an appliance rated up to 120V, and 3000V AC (r.m.s.) to an appliance rated 200V or more, for a period of one second.) This method of test requires a test equipment not generally found in the service trade. (2) Leakage Current Check Plug the AC line cord directly into the AC outlet (do not use a line isolation transformer during this check.). Using a "Leakage Current Tester", measure the leakage current from each exposed metal part of the cabinet, particularly any exposed metal part having a return path to the chassis, to a known good earth ground (water pipe, etc.). Any leakage current must not exceed 0.5mA AC (r.m.s.). However, in tropical area, this must not exceed 0.2mA AC (r.m.s.). " Alternate Check Method Plug the AC line cord directly into the AC outlet (do not use a line isolation transformer during this check.). Use an AC voltmeter having 1000 ohms per volt or more sensitivity in the following manner. Connect a 1500" 10W resistor paralleled by a 0.15#F AC-type capacitor between an exposed metal part and a known good earth ground (water pipe, etc.). Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Any voltage measured must not exceed 0.75V AC (r.m.s.). This corresponds to 0.5mA AC (r.m.s.). However, in tropical area, this must not exceed 0.3V AC (r.m.s.). This corresponds to 0.2mA AC (r.m.s.).
AC VOLTMETER (HAVING 1000 "/V, OR MORE SENSITIVITY)
0.15F AC-TYPE PLACE THIS PROBE ON EACH EXPOSED METAL PART
1500 " 10W GOOD EARTH GROUND
No.51893
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AV-21ETG2 AV-2124EE
FEATURES
" New chassis design enables use of an interactive on-screen control. " Wide range voltage (110V240V) AC power input (AV-21ETG2). " " " " " " With AUDIO / VIDEO INPUT & OUTPUT terminal. MUTING button can reduce the audio level to zero instantly. Functional remote control to operate TV set (for channel select, volume control, power ON/OFF, etc.) from a distance. I2C bus control utilizes single chip ICs for IF, V/C, DEF. VSM PRESET, PRESET & TURBO TIMER. By means of AUTO PROGRAM, the TV stations can be selected automatically and the TV channels can also be rearranged automatically. Built-in AI ECO (ECONOMY, ECOLOGY) sensor. In accordance with the brightness in a room, the brightness and / of contrast of the picture can be adjusted automatically to make the optimum picture which is easy on the eye. " Built-in ON TIMER, RETURN + & CHILD LOCK.
SYSTEM BLOCK DIAGRAM
IC301
VIDEO/CHROMA DECORDER
TU001
TUNER
IC702
MEMORY
IC701
SCL1/SDA1 MICRO COMPUTER
SCL2/SDA2
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No. 51893
AV-21ETG2 AV-2124EE
FUNCTIONS
FRONT PANEL
MENU buttons CHANNEL / buttons VOLUME / buttons ECO sensor REMOTE CONTROL sensor ON TIMER lamp POWER lamp MAIN POWER button A/V INPUT terminal HEADPHONE jack
REAR TERMINAL
ANT Terminal
VIDEO INPUT Terminal VIDEO OUTPUT Terminal AUDIO INPUT Terminal AUDIO OUT PUT Terminal
REMOTE CONTROL UNIT(RM-C364GY)
ECO SENSOR key SOUND SYSTEM key COLOUR SYSTEM key TV/VIDEO key OFF TIMER key CHANNEL SCAN key RETURNkey DISPLAY key CHANNEL / key POWER key PICTURE MODE key Number (CH.) key /key MUTING key MENU key MENU / key MENU / key VOLUME/ key
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AV-21ETG2 AV-2124EE
MAIN DIFFERENCE LIST
! Part Name / Item Model Name
AV-21ETG2 SCG-1292A-H2 QQW0077-001 GG10048-008A-H LC20377-001B-H GG10056-062A-H RM-C364GY-1H LCT1069-001A-H LCT1070-001A-H
AV-2124EE SCG-1293A-H2 QQW0124-001 GG10048-009A-H GG20014-005A-H GG10056-063A-H
MAIN PWB
! ! !
DEG COIL FRONT CABINET RATING LABEL PACKING CASE REMOTE CONTROL UNIT
! !
INST. BOOK DIGEST MANUAL WARRANTY CARD Power Input
LCT1029-001A-H
BT-54012-2 AC110AC240V AC220AC240V
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No. 51893
AV-21ETG2 AV-2124EE
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unplug the power plug. 2. As shown in figure, remove the
5
screws marked
!
and a
screw marked " and a screw marked # . 3. Remove the back board and remove the power cord from the rear cover. 4. Withdraw the rear cover toward you.
REMOVING THE MAIN PW BOARD
" After removing the rear cover. 1. Slightly raise the both sides of the MAIN PW Board by hand and remove the PWB stopper of MAIN PW Board. 2. Withdraw the MAIN PW Board backward. (If necessary, take off the wire clamp, connectors etc.)
REMOVING THE SPEAKER
" After removing the rear cover. 1. As shown in figure, remove the 2 screws marked $ .
CHECKING THE MAIN PW BOARD
1. To check the back side of the PW Board. 1) Pull out the MAIN PW Board. (Refer to REMOVING THE MAIN PW Board) 2) Erect the PW Board vertically so that you can easily check the back side of the PW Board. [CAUTION] " When erecting the PW Board, be careful so that there will be no contacting with other PW Board. " Before turning on power, make sure that the CRT earth wire and other connector are properly connected.
WIRE CLAMPING AND CABLE TYING
1. Be sure to clamp the wire. 2. Never remove the cable tie used for tying the wires together. Should it be inadvertently removed, be sure to tie the wires with a new cable tie.
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AV-21ETG2 AV-2124EE
FRONT CABI.
CRT SOCKET PWB
SPEAKER
MAIN PWB HVT
D
(× 2) × SPEAKER
D
(× 2) ×
REAR COVER
PWB STOPER
C B
BACK BOARD
A
(× 5) ×
POWER CORD
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No. 51893
AV-21ETG2 AV-2124EE
REPLACEMENT OF MEMORY ICs
1. MEMORY ICs
This model uses memory ICs. This memory IC data are for proper operation of the video and deflection circuits. When replacing memory ICs, be sure to use ICs written with the initial values of data.
2. PROCEDURE FOR REPLACING MEMORY ICs
(1) Power off Switch the power off and disconnect the power plug from the wall outlet. (2) Replace ICs Be sure to use memory ICs written with the initial data values. (3) Power on Connect the power plug into the wall outlet and switch the power on. (4) Check and set SYSTEM CONSTANT SET It must not adjust without adjustment signals. 1) Press the DISPLAY key and the PICTURE MODE key of the REMOTE CONTROL UNIT simultaneously. 2) The SERVICE MENU screen of Fig. 1 will be displayed. 3) While the SERVICE MENU is displayed, again press the DISPLAY key and PICTURE MODE key simultaneously, and the SYSTEM CONSTANT SET screen of Fig. 2 will be displayed. 4) Check the setting values of the SYSTEM CONSTANT SET of Table 1 If the value is different, select the setting item with the MENU /key, and set the correct value with the MENU - / + key. 5) Press the DISPLAY key twice, and return to the normal screen. (5) Receive channel of setting Refer to the OPERATING INSTRUCTIONS and set the receive channels (channels preset) as described (6) User Setting Check the user setting value of Table 2, and if setting value is different, set the correct value. For setting, refer to the OPERATING INSTRUCTIONS. (7) Setting of SERVICE MENU Verify the setting items of the SERVICE MENU, and reset where necessary. For setting, refer to the SERVICE ADJUSTMENTS.
SERVICE MENU
1.IF 2.V/C 3.DEF 4.VSM PRESET 5.PRESET 6.TURBO TIMER OFF 1-6 SELECT *********** *********** *** ** **** **** DISP : EXIT **.*** ***
Fig.1
SYSTEM CONSTANT-
SYSTEM CONSTANT SET 1 COLOUR : TRIPLE BILINGUAL : NO TUNER : MU ECO SENSOR : YES LANGUAGE : **** : SELECT / - / + : OPERATE
DISP : EXIT
SYSTEM CONSTANT-
SYSTEM CONSTANT SET B/B SOUND LOCK COLOUR AUTO QSS ALC TEXT RATE : SELECT / - / + : OPERATE : : : : : : OFF 180 NO MINT NO 20 2
DISP : EXIT
SYSTEM CONSTANT- KEY ASSIGNMENT OF REMOTE CONTROL UNIT
SYSTEM CONSTANT SET AMP TUNER VNR TEXT TABLE PICTURE MODE key NUMBERS : SELECT / - / + : OPERATE DISP : EXIT : NO : YES : CYL 3
key
DISPLAY key MENU
MENU / key
Fig.2
/key
No. 51893
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AV-21ETG2 AV-2124EE
SETTING OF SYSTEM CONSTANT SET Setting item COLOUR BILINGUAL TUNER ECO SENSOR LANGUAGE B/B SOUND LOCK COLOUR AUTO QSS ALC TEXT RATE AMP TUNER VNR TEXT TABLE 10 YES MULTI. YES MU YES E/A/F/R ON 10 YES MINT YES 20 YES YES ARA 40 NO NO CYL Table 1 USER SETTING VALUES Setting item MAIN POWER SW SUB POWER CHANNEL POSITION VOLUME TV/VIDEO ON SCREEN DISPLAY COLOUR SYSTEM SOUND SYSTEM OFF TIMER OFF ON 1 POSITION About 10 TV POSITION INDICATION PAL B/G OFF ( shown : 00 ) Setting value Setting item PICTURE MODE (VSM) LANGUAGE CHANNEL PRESET ECO SENSOR VNR AUTO SHUTOFF ON TIMER BLUE BACK CHILD LOCK Table 2 BRIGHT ENGLISH (ENG) Refer to OPERATING INSTRUCTION OFF OFF OFF PR1 OFF OFF 0:00 Setting value MA NO E/C/R OFF 20 NO MQSS NO 80 E/R/U E/F Setting contents TRIPLE NO PAL Setting value AV-21ETG2 TRIPLE NO MU YES E/A/F/R OFF E/R/U AV-2124EE
230
240
250
180 NO MINT NO 20 NO YES CYL
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No. 51893
AV-21ETG2 AV-2124EE
INITIAL SETTING VALUE OF SERVICE MENU
1. 2. Adjustment of the SERVICE MENU is made on the basis of the initial setting values ; however, the new setting values which set the screen in its optimum condition may differ from the initial setting. Do not change the initial Setting Values of the Setting (Adjustment) items not listed In "ADJUSTMENT".
2. V/C Colour system Setting item RED 1. CUT OFF GREEN BLUE 2. DRIVE 3. BRIGHT 4. CONT. 5. COLOUR 6. TINT 7. SECAM BL ADJ. 8. SHARP
(Do Not Adj.)
Variable range PAL
Initial setting value SECAM NTSC 3.58 NTSC 4.43
-128+127
-50
RED BLUE
-128+127 -127+127 -63+63 -63+63
+0 +0 +0 +0 +0 +0 +0 - 8(Fixed) +15(Fixed) +0 +0
TV VIDEO
-63+63 -31+31
TV VIDEO
-32+31
3. DEFLECTION Initial setting value Setting item 1. VER. POSITION 2. HOR. POSITION 3. VER. HEIGHT 4. VER. LINEARITY 5. VER. SCURVE 6. HOR. VCO ADJUST
(Do Not Adj.)
Variable range fv : 50Hz MODE -04 +03 -16 +15 -64 +63 -32 +31 -32 +31 -63 +62 -1 +3 -35 +15 -32 +0 fv : 60Hz MODE -3 +3 +1 -1 +0 +0
4. VSM PRESET VSM preset VSM Setting item TINT SETTING VALUE COLOUR SETTING VALUE BRIGHT SETTING VALUE CONT. SETTING VALUE SHARP SETTING VALUE mode AV-21ETG2 +15 +15 +15 +30 +15 +15 +15 +11 +12 AV-2124EE AV-21ETG2 AV-2124EE AV-21ETG2 AV-2124EE BRIGHT STANDARD SOFT
No. 51893
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AV-21ETG2 AV-2124EE
5. PRESET The items in the following table, it is no requirement for adjustment. If values had changed by the miss operation, set the initial setting values in the following table.
Colour System (Do Not Adjust) Initial setting value (Fixed value) Setting item PAL 1. C TRAP FIX 2. SHARP PEAK 3. ABL 4. GAMMA TV 5. Y. DELAY TIME VIDEO 6. BLACK EXP START TV 7. C-BPF VIDEO 8. CW / SCP 9. VIF DET LEVEL 11. IF AGC MIN 12. VIF AGC 13. VIF PMOD 19. VNR 20. RGB LIM 21. RGB LIMIT LEVEL 23. TEXT H. POSITION 24. READ DATA 1 0 0 0 0 0 15 1 2 -3 1 0 0 0 0 0 15 1 2 -3 1 0 0 0 0 0 15 1 2 -3 1 0 0 0 0 0 15 1 2 -3 0 3 1 2 3 1 0 3 0 2 3 0 1 0 1 0 0 SECAM 1 0 1 0 2 NTSC 3.58 1 0 1 0 2 NTSC 4.43 1 0 1 0 3
Sound System (Do Not Adjust) Setting item 10. SIF DET LEVEL 14. SIF BPF BW ADJUST 15. SIF TRAP FO ADJUST 16. SIF TRAP FO ADJUST 2 17. SIF -TRAP 18. SIF -BPF 22. SIF SW B/G 0 0 (-) 0 (-) 0 (-) 0 0 1 I 0 0 (-) 0 (-) 0 (-) 0 0 1 D/K 0 0 (-) 0 (-) 0 (-) 0 0 1 M 0 0 (-) 0 (-) 0 (-) 0 1 0
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No. 51893
AV-21ETG2 AV-2124EE
REPLACEMENT OF IC301 (IF V/C DECODER)
" For the IC301(IF V/C DECODER) of this model, all data are written in the micro-computer. So, write the data in the microcomputer in accordance with the following procedures before starting adjustment.
REPLACING PROCEDURES (1) Turn the POWER OFF. (2) Replace the IC301 with a new one. (3) While pressing MENU button and VOL+ button ON the FRONT CABINET simultaneously, turn the POWER ON. When the POWER is turned ON, the data is written in the micro-computer immediately.
LOCATIONS OF FRONT PANEL BUTTONS AND LAMPS
MENU buttons CHANNEL / buttons (MENU / buttons) VOLUME / buttons (MENU / buttons) ECO sensor REMOTE CONTROL sensor ON TIMER lamp POWER lamp MAIN POWER button
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AV-21ETG2 AV-2124EE
SERVICE ADJUSTMENT
BEFORE STARTING SERVICE ADJUSTMENT
1. There are 2 way of adjusting this TV: One is with the REMOTE CONTROL UNIT and the other is the conventional method using adjustment parts and components. 2. The adjustment with the REMOTE CONTROL UNIT is made on the basis of the initial setting values. The setting values which adjust the screen to its optimum condition may differ from the initial setting values. 3. Make sure that connection is correctly made to AC power source. 4. Turn on the power of the set and equipment before use, and start the adjustment procedures after waiting at least 30 minutes. 5. Unless otherwise specified, prepare the most suitable reception or input signal for adjustment. 6. Never touch any adjustment parts, which are not specified in the list for this adjustment VRs, transforms, condensers, etc. 7. Preparation for adjustment Unless otherwise specified in the adjustment instructions, preset the following functions with the REMOTE CONTROL UNIT. User mode position PICTURE MODE (VSM) VNR TINT / COLOUR / BRIGHT CONT. / SHARP BLUE BACK OFF TIMER ECO SENSOR AUTO SHUT OFF BRIGHT OFF CENTER OFF OFF OFF OFF
MEASURING INSTRUMENT AND FIXTURES
1. DC voltmeter (or digital voltmeter) 2. Oscilloscope 3. Signal generator (Pattern generator) [PAL / SECAM / NTSC] 4. Remote control unit
ADJUSTMENT ITEMS
Adjustment item B1 POWER SUPPLY FOCUS adjustment IF circuit adjustment V/C (Video / Chroma) circuit adjustment Adjustment item DEFLECTION circuit adjustment VSM PRESET setting PURITY / CONVERGENCE adjustment
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No. 51893
AV-21ETG2 AV-2124EE
BASIC OPERATION OF SERVICE MENU
" The adjustment using SERVICE MENU The following adjustment items use the SERVICE MENU in the series of the adjustment. The adjustments are made on the basis of the initial setting values. The adjustment values which adjust the screen to the optimum condition can be different from the initial setting values. With the SERVICE MENU, various settings can be made, and they are broadly classified in the following items of settings. 1.IF Adjustment of the IF circuits. 2.V/C Adjustment of the VIDEO/CHROMA circuit. 3.DEF Adjustment of the DEFLECTION circuit. 4.VSM PRESET Adjustment of the initial setting values of VSM condition as STANDARD, SOFT and BRIGHT. (VSM : Video Status Memory) 5.PRESET Adjustment of the RF circuit [Do not adjust]. 6.TURBO TIMER For quick setting the TIMER count value, adjustable not only by minuets but also by second. [Should be OFF].
" Key operation of the SERVICE MENU [Enter to SERVICE MENU] Press the DISPLAY key and the PICTURE MODE key of the REMOTE CONTROL UNIT simultaneously. Then enter the SERVICE MENU mode as shown in Fig.1. [Exit from SERVICE MENU] When complete the adjustment work, press the DISPLAY key to return to the SERVICE MENU. And then press the DISPLAY key again, return to the normal screen. [Select from SERVICE MENU] In SERVICE MENU, press the number (16) key of the remote control unit, to select any of the adjustment items.
SERVICE MENU KEY ASSIGNMENT OF REMOTE CONTROL UNIT SERVICE MENU
1.IF 2.V/C 3.DEF 4.VSM PRESET 5.PRESET 6.TURBO TIMER OFF 1-6 SELECT *********** *********** *** ** **** **** DISP : EXIT **.*** *** NUMBERS
PICTURE MODE key
Fig.1
key
DISPLAY key MENU
MENU / key
/key (RM-C364GY)
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AV-21ETG2 AV-2124EE
[Method of setting] 1. IF [1. VCO] 1 Key Select 1.IF. 1 Key Select 1.VCO The VCO (CW) screen will be displayed a allow mark when the AFC voltage is at a certain level. DISPLAY Key When this is pressed twice, you will return to the SERVICE MENU. [2. DELAY POINT] 1 Key Select 1.IF. 2 Key Select 2.DELAY POINT. MENU -/+ Set (adjust) the setting values of the setting items. DISPLAY Key When this is pressed twice, you will return to the SERVICE MENU. 2.V/C, 3.DEF and 4.VSM PRESET 2~4Key Select one from 2. V/C, 3. DEF and 4. VSM PRESET. MENU / Key Select setting items. MENU -/+ Adjust the values of the items. DISPLAY Key When this is pressed, return to the SERVICE MENU.
6.TURBO TIMER By pressing the 6 key, you can change the ON or OFF ( should be OFF). (Should be OFF) % If it is ON, the timer in TIMER mode changes from 1 minute into 1 sec temporarily. (It is easier to checks the Operation of TIMER) If you turn the TV power off, this setting becomes OFF automatically.
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No. 51893
AV-21ETG2 AV-2124EE
SERVICE MENU FLOW CHART
SERVICE MENU SERVICE MENU
1.IF 2.V/C 3.DEF 4.VSM PRESET 5.PRESET 6.TURBO TIMER OFF 1-6 SELECT ****** ***** DISP : EXIT ** .*** IF 1. VCO 2. DELAY POINT
SUB MENU 1. IF
VCO (CW) ***.** MHz TOO HIGH ABOVE REFERENCE JUST REFERENCE BELOW REFERENCE TOO LOW AFT ADJUST ***(**) VCO ADJUST ***(**) FINE DISP : EXIT
1-2 : SELECT
DISP : EXIT
*** ** ** ** ***
6.TURBO TIMER
OFF
DELAY POINT UHF
ON / OFF (By pressing 6-key)
SUB MENU 2. V/C
AGC TAKE-OVER V/C 1. CUTOFF PAL : OPERATE (R) * ** (G) * ** (B) * ** DISP : EXIT **
50Hz : SELECT / - / + : OPERATE DISP : EXIT
SUB MENU 3. DEF
DEF 1. VER. POSITION
PAL ***
50Hz : SELECT / - / + : OPERATE DISP : EXIT
SUB MENU 4. VSM PRESET
BRIGHT TINT COLOUR BRIGHT CONT. SHARP : SELECT / - / + : OPERATE ** ** ** ** ** DISP : EXIT
SUB MENU 5. PRESET
PAL PRESET 1. C-TRAP FIX
***
50Hz : SELECT / - / + : OPERATE
B/G DISP : EXIT
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AV-21ETG2 AV-2124EE
ADJUSTMENT LOCATIONS
CRT SOCKET PWB
TOP
TP-R TP-B U
(SOLDER SIDE)
T TP-E E1
CRT EARTH WIRE (BRAIDED ASS'Y)
MAIN PWB
FRONT
POWER SW
SR
IC702 MEMORY IC
SL IC701
CW
IC201 SIF HV S2 DEG S1 IC651 PW C HVT TUNER U
1Pin IF OUT 2Pin GND 3Pin TP-952.5 4Pin L TV 5Pin R TV 6Pin TP-12
1Pin TP-91(B1) 2Pin X-ray2 3Pin X-ray1 4Pin NC 5Pin TP-E
UPPER:FOCUS LOWER:SCREEN
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No. 51893
AV-21ETG2 AV-2124EE
ADJUSTMENTS
B1 POWER SUPPLY
Item Check of B1 Power Supply Measuring instrument Signal generator DC Voltmeter Test point TP-91 (B1) TP-E (# ) # Adjustment part Description 1. Input a whole black signal. 2. Connect a DC voltmeter to TP-91(B1) and TP-E (#). 3. Make sure that the voltage is DC114.5±1.5V.
FOCUS ADJUSTMENT
Item Adjustment of FOCUS Measuring instrument Signal generator Test point Adjustment part FOCUS VR [In HVT] Description 1. Input a cross-hatch signal. 2. While watching the screen, adjust the FOCUS VR to make the vertical and horizontal lines as fine and sharp as possible. 3. Make sure that when the screen is darkened, the lines remain in good focus.
IF CIRCUIT ADJUSTMENT
Item Adjustment of VCO(CW) Measuring instrument Signal generator Remote control unit Test point Adjustment part 1. VCO Description Please use signal generator which is correct proof about the sending frequency. 1. Input the PAL full colour bar (210.25MHz) signal. 2. Select 1.IF from the SERVICE MENU. 3. Press 1 key and select 1.VCO. 4. Select VCO ADJUST with MENU / key. 5. Press MENU -/+ key until the colour of the characters TOO HIGH changes blue to yellow. Then gradually press the MENU -/+ key until the TOO LOW changes yellow. At this time, confirm that the value of VCO ADJUST is near +00. 6. Select AFT ADJUST with MENU / key. 7. Press MENU -/+ key until the characters JUST REFERENCE changes blue to yellow. 8. Press the DISPLAY key three times to return to normal screen.
VCO (CW) ***.** MHz TOO HIGH ABOVE REFERENCE JUST REFERENCE BELOW REFERENCE TOO LOW AFT ADJUST ***(**) VCO ADJUST ***(**) FINE DISP : EXIT
YELLOW
Do not adjust
TOO HIGH ABOVE REFERENCE
JUST REFERENCE
BELOW REFERENCE TOO LOW ADJUSTMENT AT THIS POINT IS USELESS ADJUSTMENT POINT
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AV-21ETG2 AV-2124EE
Item Adjustment of DELAY POINT (AGC)
Measuring instrument Signal generator Remote control unit
Test point
Adjustment part DELAY POINT
(AGC TAKE-OVER)
Description 1. Input a black and white signal (colour off). 2. Select 1. IF from the SERVICE MENU. 3. Select 2. DELAY POINT by pressing the 2 key on the remote control unit. 4. Set the setting values of the setting items as shown bellow table. 5. Then adjust the MENU - or + key until video noise disappears. 6. Turn to other channels and make sure that there are no irregularities.
DELAY POINT
UHF
AGC TAKE-OVER - / + : OPERATE
**
DISP : EXIT
Setting Item
Variable range
Initial setting value
NTSC 3.58 DELAY POINT (AGC TAKE OVER) OTHER 0127
48
43
20
No. 51893
AV-21ETG2 AV-2124EE
VIDEO / CHROMA CIRCUIT ADJUSTMENT
The setting (adjustment) using the REMOTE CONTROL UNIT is made on the basis of the initial setting values. The setting values which adjust the screen to the optimum condition can be different from the initial setting values. Do not change the initial setting values of the setting items not listed in "ADJUSTMENT".
Item Adjustment of WHITE BALANCE (Low light)
Measuring instrument Signal generator Remote control unit
Test point
Adjustment part 1. CUT OFF (R) CUT OFF (G) CUT OFF (B) SCREEN VR [IN HVT]
Description 1. Input a black and white signal (colour off). 2. Select 2. V/C from the SERVICE MENU, then select 1. CUT OFF (R), (G) and (B) . 3. Set each value to initial setting value with 49 keys of the remote control unit. 4. Press the 1 key of the remote control unit to show the single horizontal line on screen. 5. Turn the SCREEN VR fully counter-clockwise, then slowly turn it clockwise to where one of a red, blue or green colour is faintly
V/C 1. CUTOFF
AUTO (R) * ** (G) * ** (B) * **
visible. 6. Use keys 49 of the remote control unit and adjust the other 2 colours which except the appeared colour to where the single horizontal line appears white. 7. Turn the SCREEN VR to where the single horizontal line glows faintly. 8. Press the 2 key to turn off the single horizontal line. 9. Press the DISPLAY key twice to return to the normal screen.
50Hz : SELECT / - / + : OPERATE DISP : EXIT
KEY ASSIGNMENT OF REMOTE CONTROL UNIT
CUTOFF OFF (H.LINE OFF) CUTOFF ON (H.LINE ON) R. CUTOFF ( ) R. DRIVE ()
1
2
3 G.CUTOFF ( )
4
5
6
B. CUTOFF ( ) () B. DRIVE B. CUTOFF ( ) () B. DRIVE G. CUTOFF ( )
Adjustment item R 1. CUT OFF G B
Variable range -128+127 -128+127 -128+127
Initial setting value -50 -50 -50
R. CUTOFF ( ) R. DRIVE ()
7
8
9
R
Adjustment of WHITE BALANCE (High light) Signal generator Remote control unit
G
B
2. DRIVE (R) DRIVE (B)
1. Input a black and white signal (colour off). 2. Select 2. V/C from the SERVICE MENU. 3. Select 2. DRIVE (R) / (B) with MENU / key, and set each value to initial setting value with 4 and 7 or 6 and 9 keys of the remote control unit. 4. Use the keys 4 and 7 or 6 and 9 to produce a white screen 5. Press the DISPLAY key twice to return to the nomal screen.
V/C 2. DRIVE
PAL (R) * ** (B) * **
Adjustment item R 2. DRIVE B
Variable range -128+127 -128+127
Initial setting value +0 +0
50Hz : SELECT / - / + : OPERATE DISP : EXIT
No. 51893
21
AV-21ETG2 AV-2124EE
Item Adjustment of SUB BRIGHT
Measuring instrument Remote control unit
Test point
Adjustment part 3. BRIGHT 1. Receive any broadcast.
Description
2. Select 2. V/C from SERVICE MENU. 3. Select 3. BRIGHT with the MENU /key. 4. Set the initial setting value with the MENU - or + key. 5. If the brightness is not the best with the initial set value, make fine adjustment until you get the best brightness.
Adjustment of SUB CONT.
Remote control unit
4. CONT.
1. Receive any broadcast. 2. Select 2. V/C from SERVICE MENU. 3. Select 4. CONT. with the MENU /key. 4. Set the initial setting value with the MENU - or + key. 5. If the contrast is not the best with the initial set value, make fine adjustment until you get the best contrast.
Adjustment of SUB COLOUR
Remote control unit
5. COLOUR
[Method of adjustment without measuring instrument]
PAL COLOUR
1. Receive a PAL broadcast. 2. Select 2. V/C from the SERVICE MENU. 3. Select 5. COLOUR with the MENU / key. 4. Set the initial setting value for PAL COLOUR with the MENU - or + key. 5. If the colour is not the best with the initial set value, make fine adjustment until you get the best colour.
SECAM COLOUR
1. Receive a SECAM broadcast. 2. Make fine adjustment of SECAM COLOUR as previously.
NTSC 3.58 COLOUR
1. Receive a NTSC 3.58MHz broadcast. 2. Make similar fine adjustment of NTSC 3.58 COLOUR as previously.
NTSC 4.43 COLOUR
When NTSC 3.58 adjustment completed, NTSC 4.43 will be automatically set at the respective values.
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No. 51893
AV-21ETG2 AV-2124EE
Item
Measuring instrument Signal generator Oscilloscope Remote control unit
Test point
Adjustment part
Description
Adjustment of SUB COLOUR
TP-47G/R TP-E (# ) #
[CRT SOCKET PWB]
5. COLOUR
[Method of adjustment using measuring instrument]
PAL COLOUR
1. Input a PAL full field colour bar signal (75% white). 2. Select 2. V/C from SERVICE MENU. 3. Select 5. COLOUR with the MENU / key. 4. Set the initial setting value of PAL COLOUR with the MENU - or + key. 5. Connect the oscilloscope between TP-47G/R and TP-E (#). 6. Adjust PAL COLOUR to bring the value of (A) in the illustration
B Mg R
to +14V(W-G). (Voltage value between (W) and (G))
() 0V Y Cy
W
(A) G
()
SECAM COLOUR
1. Input a SECAM full field colour bar signal (75% white). 2. Set the initial setting value of SECAM COLOUR with the MENU - or + key. 3. Adjust SECAM COLOUR to bring the value of (A) in the illustration to +8V(W-G). (Voltage value between (W) and (G))
NTSC 3.58 COLOUR
1. Input a NTSC 3.58 full field colour bar signal (75% white). 2. Set the initial setting value of NTSC 3.58 COLOUR with the MENU - or + key. 3. Adjust NTSC 3.58 COLOUR to bring the value of (A) in the illustration to +11V(W-G). (Voltage value between (W) and (G))
NTSC 4.43 COLOUR
When NTSC 3.58 is set, NTSC 4.43 will be automatically set at the respective values.
No. 51893
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AV-21ETG2 AV-2124EE
Item Adjustment of TINT
Measuring instrument Signal generator Remote control unit
Test point
Adjustment part 6. TINT
Description [Method of adjustment without measuring instrument]
NTSC 3.58 TINT
1. Input a NTSC 3.58 full field colour bar signal (75% white). 2. Select 2. V/C from SERVICE MENU. 3. Select 6. TINT with the MENU / key. 4. Set the initial setting value of NTSC 3.58 with the MENU - or + key. 5. If you cannot get the best tint with the initial setting value, make fine adjustment until you get the best tint.
NTSC 4.43 TINT
When NTSC 3.58 is set, NTSC 4.43 will be automatically set at the respective values.
Adjustment of TINT
Signal generator Oscilloscope Remote control unit
TP-47G/R TP-E (# ) # [CRT SOCKET PWB]
6. TINT
NTSC 3.58 TINT
[Method of adjustment using measuring instrument] 1. Input a NTSC 3.58 full field colour bar signal (75% white). 2. Select 2. V/C from SERVICE MENU. 3. Select 6. TINT with the MENU / key. 4. Set the initial setting value of NTSC 3.58 with the MENU - or + key. 5. Connect the oscilloscope between TP-47G/R and TP-E. (#). 6. Adjust NTSC 3.58 TINT to bring the value of (B) in the illustration +9V(W- Cy). (Voltage value between (W) and (Cy))
B R Mg () 0V Y
W
(B) Cy
() G
NTSC 4.43 TINT
When NTSC 3.58 is set, NTSC 4.43 will be automatically set at the respective values.
24
No. 51893
AV-21ETG2 AV-2124EE
Item Adjustment of SECAM BLACK OFFSET
Measuring instrument Remote control unit Signal generator
Test point
Adjustment part
Description [Method of adjustment using measuring instrument]
7.SECAM BL ADJUST
1. Input a SECAM full field colour bar signal. 2. Select 2. V/C from SERVICE MENU. 3. Select 7. SECAM BL ADJUST with /MENU key. 4. Set the initial setting value with the or + MENU key. 5. Switch the key (colour OFF) and key (colour ON) on the remote control and make sure that there is no colour on the black and white screen. 6. If the black and white screen is not best with the initial setting value, make fine adjustment until you get the best black and white screen. 7. While watching the screen, adjust the value to be the same colour between ON & OFF by Ten key on the remote control unit. 8. Press the DISPLAY key twice to return to the normal screen.
KEY ASSIGNMENT OF REMOTE CONTROL UNIT
COLOUR ON 1 COLOUR OFF 4 5 6 2 3
7
8
9
No. 51893
25
AV-21ETG2 AV-2124EE
DEFLECTION CIRCUIT ADJUSTMENT
" There are 2 modes of adjustment (setting value) ------ 50Hz mode and 60Hz mode ----- depending upon the kind of signals (vertical frequency 50Hz / 60Hz). " When adjusted in mode , mode will be automatically set. The setting (adjustment) using the REMOTE CONTROL UNIT is made on the basis of the initial setting values. The setting values which adjust the screen to the optimum condition can be different from the initial setting values.
Item Adjustment of!V.HEIGHT ! & V.POSITION
Measuring instrument Signal generator Remote control unit
Test point
Adjustment part 1. VER. POSITION 3. VER. HEIGHT
Description 1. Input a circle pattern signal. 2. Select 3. DEF. from SERVICE MENU. 3. Select 1. VER. POSITION with the MENU / key. 4. Set the initial setting value 1. VER. POSITION with the MENU -/ + key. 5. Adjust V and V' to be equal with the MENU - / + key as shown in Fig.2.
DEF 1. VER. POSITION
PAL ***
6. Input a cross-hatch signal. 7. Select 3. V. HEIGHT with the MENU / key. 8. Set the initial setting value 3. V. HEIGHT with the MENU - / + key.
50Hz : SELECT / - / + : OPERATE DISP : EXIT
9. As shown in Fig.1, adjust VER. HEIGHT and make the vertical screen size 92% of the picture size with the MENU - / + keys of remote control unit.
Screen size
Screen size
92%
Picture size 100%
Picture size 100% Fig.1
Adjustment of!HOR. ! POSITION
Signal generator Remote control unit H
2.HOR. POSITION
10. Input a circle pattern signal. 11. Select 2. HOR POSITION with the MENU / key. 12. Set the initial setting value of 2. HOR. POSITION with the MENU - / + key.
H" V
13. Adjust 2. HOR. POSITION to make H=H" as shown in Fig.2 with the MENU - / + key.
V' Fig.2
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No. 51893
AV-21ETG2 AV-2124EE
Item Adjustment of VER. LIN. & VER. SCURVE
Measuring instrument Signal generator Remote control unit
Test point
Adjustment part 4. VER. LIN. 5. VER. SCURVE When the vertical
Description linearity has been deteriorated
remarkably, perform the following steps. 14. Input a cross-hatch signal. 15. Select 4. VER. LIN. with the MENU / key. 16. Set the initial setting value of 4. VER LIN. with the MENU - / + key. 17. Select 5. VER. SCURVE with the MENU / key.
TOP
18. Set the initial setting value of 5. VER. SCURVE with the MENU - / + key. 19. Adjust 4. VER. LIN. and 5. VER. SCURVE so that the spaces of each line as shown in Fig.3 on TOP, CENTER and
CENTER
BOTTOM become uniform. . Make sure that the adjustment is properly done on the screen of
BOTTOM
60Hz mode. [NOTE] " Adjust to make both 50Hz & 60Hz are the same v. size and fine straight line.
" When adjust again, adjust 50Hz mode first. " When adjust in 60Hz mode, only 60Hz mode is adjust.
Fig.3
No. 51893
27
AV-21ETG2 AV-2124EE
VSM PRESET SETTING
Item Measuring instrument Remote control unit Test point Adjustment part Description
Setting of VSM PRESET
TINT COLOUR BRIGHT CONT. SHARP
1. Select 4. VSM PRESET from the SERVICE MENU. 2. Select BRIGHT with the PICTURE MODE key. 3. Adjust the MENU / and MENU - or + key to bring the set values of TINT SHARP to the values shown in the below table. 4. Respectively select the VSM PRESET mode for SOFT and STANDARD, and make similar adjustment as in 3 above.
BRIGHT TINT COLOUR BRIGHT CONT. SHARP : SELECT / - / + : OPERATE ** ** ** ** **
DISP : EXIT
$
VSM PRESET Preset mode Setting Item TINT COLOUR BRIGHT CONT SHARP BRIGHT AV-21ETG2 +15 +15 +15 +30 +15 +15 +15 +11 +12 AV-2124EE STANDARD AV-21ETG2 AV-2124EE SOFT AV-21ETG2 AV-2124EE
28
No. 51893
AV-21ETG2 AV-2124EE
PURITY / CONVERGENCE ADJUSTMENT
PURITY ADJUSTMENT
1. Demagnetize CRT with the demagnetizer.
WEDGE DEFLECTION YOKE
P
2. Loosen the retainer screw of the deflection yoke.
3. Remove the wedges.
CRT
4. Input a green raster signal from the signal generator, and turn the screen to green raster.
46
5. Move the deflection yoke backward.
P/C MAGNETS
# P/C MAGNETS 6. Bring the long lug of the purity magnets on the short lug and position them horizontally. (Fig.2) P : PURITY MAGNET 4 : 4 POLES (convergence magnets) 6 : 6 POLES (convergence magnets) Fig.1
7. Adjust the gap between two lugs so that the GREEN RASTER will come into the center of the screen. (Fig.3)
8. Move the deflection yoke forward, and fix the position of the deflection yoke so that the whole screen will become green.
9. Insert the wedge to the top side of the deflection yoke so that it will not move.
PURITY MAGNETS
10. Input a crosshatch signal.
Long lug
11. Verify that the screen is horizontal.
Short lug
12. Input red and blue raster signals, and make sure that purity is properly adjusted.
Bring the long lug over the short lug and position them horizontally.
Fig.2
(FRONT VIEW )
GREEN RASTER
CENTER
Fig.3
No. 51893
29
AV-21ETG2 AV-2124EE
STATIC CONVERGENCE ADJUSTMENT
1. Input a crosshatch signal. 2. Using 4-pole convergence magnets, overlap the red and blue lines in the center of the screen (Fig.1) and turn them to magenta (red/blue).
(FRONT VIEW )
3. Using 6-pole convergence magnets, overlap the magenta(red/blue) and green lines in the center of the screen and turn them to white. 4. Repeat 2 and 3 above, and make best convergence. Fig.1
(FRONT VIEW )
DYNAMIC CONVERGENCE ADJUSTMENT
1. Move the deflection yoke up and down and overlap the lines in the periphery. (Fig. 2)
BLUE
RED
GREEN BLUE
RED GREEN BLUE
2. Move the deflection yoke left to right and overlap the lines in the periphery. (Fig. 3) 3. Repeat 1 and 2 above, and make best convergence.
GREEN RED
BLUE
GREEN
RED
Fig.2
After adjustment, fix the wedge at the original position. Fasten the retainer screw of the deflection yoke. Fix the 6 magnets with glue.
(FRONT VIEW ) GREEN RED BLUE GREEN BLUE RED RED GREEN BLUE
BLUE GREEN RED
Fig.3
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No. 51893
AV-21ETG2 AV-2124EE
REPLACEMENT OF CHIP COMPONENT
! CAUTIONS
1. 2. 3. 4. Avoid heating for more than 3 seconds. Do not rub the electrodes and the resist parts of the pattern. When removing a chip part, melt the solder adequately. Do not reuse a chip part after removing it.
! SOLDERING IRON
1. Use a high insulation soldering iron with a thin pointed end of it. 2. A 30w soldering iron is recommended for easily removing parts.
! REPLACEMENT STEPS
1. How to remove Chip parts $ Resistors, capacitors, etc (1) As shown in the figure, push the part with tweezers and alternately melt the solder at each end.
2. How to install Chip parts
$ Resistors, capacitors, etc (1) Apply solder to the pattern as indicated in the figure.
(2) Shift with tweezers and remove the chip part.
(2) Grasp the chip part with tweezers and place it on the solder. Then heat and melt the solder at both ends of the chip part.
$ Transistors, diodes, variable resistors, etc (1) Apply extra solder to each lead.
$ Transistors, diodes, variable resistors, etc (1) Apply solder to the pattern as indicated in the figure. (2) Grasp the chip part with tweezers and place it on the solder. (3) First solder lead A as indicated in the figure.
SOLDER
SOLDER
(2) As shown in the figure, push the part with tweezers and alternately melt the solder at each lead. Shift and remove the chip part.
A B
C (4) Then solder leads B and C.
A B C
Note : After removing the part, remove remaining solder from the pattern.
No.51893
31
AV-21ETG2 AV-2124EE
32
No.51893
VICTOR COMPANY OF JAPAN, LIMITED HOME AV NETWORK BUSINESS UNIT 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa-prefecture, 221-8528, Japan
4
AV21ETG2-H #4 AV2124EE-H #4
VP 0112 DP7051