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AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
SERVICE MANUAL
COLOUR TELEVISION
AV-21D10 / AV-21D10/AU BASIC CHASSIS
CG
AV-21DM10 / AV-21DM10/-A
AV-2134EE / AV-21DTG2/-A
CONTENTS
! SPECIFICATIONS 2
! SAFETY PRECAUTIONS 3
! FEATURES 4
! FUNCTIONS 5
! MAIN DIFFERENCE LIST 6
! SPECIFIC SERVICE INSTRUCTIONS 7
! SERVICE ADJUSTMENTS 14
! PARTS LIST 31
OPERATING INSTRUCTIONS
STANDARD CIRCUIT DIAGRAM 2-1
1 COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD. No. 51858
Oct. 2001
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
SPECIFICATIONS
CONTENTS
ITEM AV-21D10 / AV-21D10/AU
AV-21DM10 / AV-21DM10/-A
AV-2134EE / AV21DTG2/-A
Dimensions(W×H×D) 598mm×468mm×478mm
Mass 21kg
TV RF System B/G, I, D/K B/G, I, D/K,&M
RF Mode PAL / SECAM PAL / SECAM / NTSC3.58 / NTSC4.43
Colour System
VIDEO Mode PAL / SECAM / NTSC3.58 / NTSC4.43
Picture Tube Visible size: 51cm measured diagonally
High Voltage 26.5kV±1.5kV(at zero beam current)
Receiving Frequency VHF (VL) 46.25MHz168.25MHz
VHF (VH) 175.25MHz463.25MHz
UHF 471.25MHz863.25MHz
Cable TVs of Mid (X-Z, S1-S10)
CATV Super (S11-S20) & Hyper (S21-S41)
bands receivable
VIF Carrier 38.0MHz
Intermediate 32.5MHz(5.5MHz) 32.5MHz(5.5MHz)/33.5MHz (4.5MHz)
Frequency SIF Carrier 31.5MHz (6.5MHz) 31.5MHz (6.5MHz)
32.0MHz (6.0MHz) 32.0MHz (6.0MHz)
PAL (4.43MHz),
Colour Sub Carrier Frequency SECAM (4.40625MHz / 4.25MHz)
NTSC (3.58MHz / 4.43MHz)
[AV-21D10 / AV-21D10/AU / AV-2134EE]
: AC220240V, 50 / 60Hz [AV-21DM10 / AV-21DM10/-A ]
Power Input Rated Voltage
[AV-21DTG2/-A] : AC110240V, 50 / 60Hz
: AC110240V, 50 / 60Hz
Power Consumption 90W (Max) 60W(Avg)
Speaker 5cm×12 cm, Oval type×2
Audio Output 3W (monaural)
Aerial Input Terminal 75 Unbalanced
Input Video 1V(p-p), 75 (Front / Rear)
500mV(rms) (-4dBs), High impedance,
Audio
RCA×2 (Front / Rear)
Output Video 1V(p-p), 75
Audio 500mV(rms) (-4dBs), Low impedance,
Headphone jack 3.5mm mini jack
Remote Control Unit RM-C364GY
(Battery size : AA / R06 / UM-3×2)
Design and specifications are subject to change without notice.
2 No. 51858
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
SAFETY PRECAUTIONS
1. The design of this product contains special hardware, many 9. Isolation Check
circuits and components specially for safety purposes. For (Safety for Electrical Shock Hazard)
continued protection, no changes should be made to the original After re-assembling the product, always perform an isolation
design unless authorized in writing by the manufacturer. check on the exposed metal parts of the cabinet (antenna
Replacement parts must be identical to those used in the original terminals, video/audio input and output terminals, Control knobs,
circuits. Service should be performed by qualified personnel metal cabinet, screwheads, earphone jack, control shafts, etc.)
only. to be sure the product is safe to operate without danger of
electrical shock.
2. Alterations of the design or circuitry of the products should not be (1) Dielectric Strength Test
made. Any design alterations or additions will void the The isolation between the AC primary circuit and all metal parts
manufacturer's warranty and will further relieve the manufacturer exposed to the user, particularly any exposed metal part having a
of responsibility for personal injury or property damage resulting return path to the chassis should withstand a voltage of 3000V
therefrom. AC (r.m.s.) for a period of one second.
(. . . . Withstand a voltage of 1100V AC (r.m.s.) to an appliance
3. Many electrical and mechanical parts in the products have rated up to 120V, and 3000V AC (r.m.s.) to an appliance rated
special safety-related characteristics. These characteristics are 200V or more, for a period of one second.)
often not evident from visual inspection nor can the protection This method of test requires a test equipment not generally found
afforded by them necessarily be obtained by using replacement in the service trade.
components rated for higher voltage, wattage, etc. Replacement (2) Leakage Current Check
parts which have these special safety characteristics are Plug the AC line cord directly into the AC outlet (do not use a line
identified in the parts list of Service manual. Electrical isolation transformer during this check.). Using a "Leakage
components having such features are identified by shading Current Tester", measure the leakage current from each exposed
!
on the schematics and by (! ) on the parts list in Service metal part of the cabinet, particularly any exposed metal part
manual. The use of a substitute replacement which does not having a return path to the chassis, to a known good earth
have the same safety characteristics as the recommended ground (water pipe, etc.). Any leakage current must not exceed
replacement part shown in the parts list of Service manual may 0.5mA AC (r.m.s.).
cause shock, fire, or other hazards. However, in tropical area, this must not exceed 0.2mA AC
(r.m.s.).
4. Don't short between the LIVE side ground and ISOLATED " Alternate Check Method
(NEUTRAL) side ground or EARTH side ground when Plug the AC line cord directly into the AC outlet (do not use a line
repairing. isolation transformer during this check.). Use an AC voltmeter
Some model's power circuit is partly different in the GND. The having 1000 ohms per volt or more sensitivity in the following
difference of the GND is shown by the LIVE : (") side GND, the manner. Connect a 1500! 10W resistor paralleled by a 0.15"F
ISOLATED(NEUTRAL) : (#) side GND and EARTH : ($) side AC-type capacitor between an exposed metal part and a known
GND. Don't short between the LIVE side GND and good earth ground (water pipe, etc.). Measure the AC voltage
ISOLATED(NEUTRAL) side GND or EARTH side GND and across the resistor with the AC voltmeter. Move the resistor
never measure with a measuring apparatus (oscilloscope etc.) connection to each exposed metal part, particularly any exposed
the LIVE side GND and ISOLATED(NEUTRAL) side GND or metal part having a return path to the chassis, and measure the
EARTH side GND at the same time. AC voltage across the resistor. Now, reverse the plug in the AC
If above note will not be kept, a fuse or any parts will be broken. outlet and repeat each measurement. Any voltage measured
must not exceed 0.75V AC (r.m.s.). This corresponds to 0.5mA
5. If any repair has been made to the chassis, it is recommended AC (r.m.s.).
that the B1 setting should be checked or adjusted (See However, in tropical area, this must not exceed 0.3V AC (r.m.s.).
ADJUSTMENT OF B1 POWER SUPPLY). This corresponds to 0.2mA AC (r.m.s.).
6. The high voltage applied to the picture tube must conform with AC VOLTMETER
that specified in Service manual. Excessive high voltage can (HAVING 1000 !/V,
cause an increase in X-Ray emission, arcing and possible OR MORE SENSITIVITY)
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 0.15F AC-TYPE
(incorrect installation, cracked or melted high voltage harness,
poor soldering, etc.). To maintain the proper minimum level of PLACE THIS PROBE
soft X-Ray emission, components in the high voltage circuitry ON EACH EXPOSED
including the picture tube must be the exact replacements or 1500 ! 10W METAL PART
alternatives approved by the manufacturer of the complete GOOD EARTH GROUND
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.
No.51858 3
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
FEATURES
" New chassis design enables use of an interactive on-screen control.
" Wide range voltage (110V240V) AC power input (AV-21DTG2/-A / AV-21DM10 / AV-21DM10/-A).
" 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 TU001
DECORDER TUNER
IC702
MEMORY
IC701
SCL1/SDA1
SCL2/SDA2 MICRO
COMPUTER
4 No. 51858
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
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
No. 51858 5
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
MAIN DIFFERENCE LIST
Model Name
! AV-21D10 AV-21D10/AU AV-21DM10
Part Name & Item
MAIN PWB SCG-1026A-H2 SCG-1281A-H2 SCG-1025A-H2
! FRONT CABINET LC11129-002A-H
! POWER CORD QMPR340-165-K2 QMP2980-185J5 QMPR340-165-K2
! RATING LABEL GG20014-002A-H GG20014-004A-H LC20377-001B-H
! INST. BOOK LCT1039-001A-H LCT0994-001B-H
! DIGEST MANUAL LCT1034-001A-H LCT0993-001B-H
WARRANTY CARD BT-56001-2
S CENTER LIST BT-56002-2
CONVERSION PLUG
TV RF System B/G, I, D/K B/G, I, D/K B/G, I, D/K,&M
Colour System PAL / SECAM
PAL / SECAM PAL / SECAM
[ RF Mode ] NTSC3.58 / NTSC4.43
32.5MHz (5.5MHz)
32.5MHz (5.5MHz) 32.5MHz (5.5MHz)
Intermediate Frequency 33.5MHz (4.5MHz)
31.5MHz (6.5MHz) 31.5MHz (6.5MHz)
[ SIF Carrier ] 31.5MHz (6.5MHz)
32.0MHz (6.0MHz) 32.0MHz (6.0MHz)
32.0MHz (6.0MHz)
Power Input AC220240V AC220240V AC110240V
[ Rated Voltage] 50 / 60Hz 50 / 60Hz 50 / 60Hz
Model Name
! AV-2134EE AV-21DTG2/-A AV-21DM10/-A
Part Name & Item
MAIN PWB SCG-1027A-H2 SCG-1023A-H2 SCG-1025A-H2
! FRONT CABINET LC11129-005A-H LC11129-002A-H
QMPR010-200-E2
! POWER CORD QMPR340-165-K2 or
QMPR010-200-K2
! RATING LABEL GG20014-005A-H LC20413-002B-H
! INST. BOOK LCT1029-001A-H LCT0994-001B-H
! DIGEST MANUAL LCT0993-001B-H
WARRANTY CARD BT-54012-2
S CENTER LIST
CONVERSION PLUG QAM0055-001 QAM0055-001
TV RF System B/G, I, D/K B/G, I, D/K B/G, I, D/K,&M
Colour System PAL / SECAM
PAL / SECAM PAL / SECAM
[ RF Mode ] NTSC3.58 / NTSC4.43
32.5MHz (5.5MHz)
32.5MHz (5.5MHz) 32.5MHz (5.5MHz)
Intermediate Frequency 33.5MHz (4.5MHz)
31.5MHz (6.5MHz) 31.5MHz (6.5MHz)
[ SIF Carrier ] 31.5MHz (6.5MHz)
32.0MHz (6.0MHz) 32.0MHz (6.0MHz)
32.0MHz (6.0MHz)
Power Input AC220240V AC110240V AC110240V
[ Rated Voltage] 50 / 60Hz 50 / 60Hz 50 / 60Hz
6 No. 51858
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unplug the power plug.
2. As shown in figure, remove the 7 screws marked ! and a
screw marked " .
3. 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.
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 # .
2. Follow the same steps when removing the other hand speaker.
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.
No. 51858 7
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
FRONT CABI.
SPEAKER
C
CRT SOCKET
PWB
MAIN PWB
C
SPEAKER
REAR
COVER
POWER
CORD
B
A
8 No. 51858
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
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 SERVICE MENU
(1) Power off 1.IF 2.V/C
Switch the power off and disconnect the power plug from the wall outlet. 3.DEF 4.VSM PRESET
5.PRESET
(2) Replace ICs 6.TURBO TIMER OFF
Be sure to use memory ICs written with the initial data values.
1-6 SELECT DISP : EXIT
(3) Power on ***********
*********** **.***
Connect the power plug into the wall outlet and switch the power on. *** ** ****
**** ***
(4) Check and set SYSTEM CONSTANT SET Fig.1
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.
SYSTEM CONSTANT-
3) While the SERVICE MENU is displayed, again press the DISPLAY key and
PICTURE MODE key simultaneously, and the SYSTEM CONSTANT SET SYSTEM CONSTANT SET 1
screen of Fig. 2 will be displayed. COLOUR : *****
BILINGUAL : ***
1) Check the setting values of the SYSTEM CONSTANT SET of Table 1 If the TUNER : **
value is different, select the setting item with the MENU /key, and set ECO SENSOR : YES
LANGUAGE : E/R/A/F
the correct value with the MENU - / + key.
5) Press the DISPLAY key twice, and return to the normal screen. : SELECT
: OPERATE DISP : EXIT
(5) Receive channel of setting
Refer to the OPERATING INSTRUCTIONS and set the receive channels SYSTEM CONSTANT-
(channels preset) as described
(6) User Setting
SYSTEM CONSTANT SET 2
Check the user setting value of Table 2, and if setting value is different, set
B/B SOUND : NO
the correct value. LOCK : 180
For setting, refer to the OPERATING INSTRUCTIONS. COLOUR AUTO : YES
QSS : MINT
(7) Setting of SERVICE MENU ALC : NO
Verify the setting items of the SERVICE MENU of Table 3, and reset where TEXT RATE : 20
necessary. :SEL
:OPE DISP:EXIT
For setting, refer to the SERVICE ADJUSTMENTS.
NOTE
SYSTEM CONSTANT-
Both MENU -/+ Key and MENU / key have the same functions.
SYSTEM CONSTANT SET 3
KEY ASSIGNMENT OF REMOTE CONTROL UNIT AMP TUNER : YES
VNR : NO
TEXT TABLE :***
PICTURE :SEL
MODE key :OPE DISP:EXIT
NUMBERS
key
Fig.2
DISPLAY key MENU
/ key
MENU
/key
No. 51858 9
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
SETTING OF SYSTEM CONSTANT SET
Mode
Setting item Setting contents
AV-21D10 AV-21D10/AU AV-21DM10 AV-2134EE AV-21DTG2/-A AV-21DM10/-A
COLOUR MULTI. TRIPLE PAL TRIPLE MULTI TRIPLE MULTI
YES NO
BILINGUAL NO
TUNER MU MA MU
ECO SENSOR YES NO YES
LANGUAGE E/A/R/F E/R/C E/R/U E/F E/R/C E/A/F/R E/A/R/F E/R/U E/A/R/F
B/B SOUND ON OFF OFF NO NO
YES 10 20 230
LOCK 180
250 240
COLOUR YES NO
NO YES
AUTO
QSS MINT MQSS MINT
ALC YES NO NO
TEXT RATE 10 20 40 80 20
YES NO
AMP TUNER NO
VNR YES NO YES
ARA CYL
TEXT TABLE CYL
Table 1
USER SETTING VALUES
Setting item Setting value Setting item Setting value
MAIN POWER SW OFF PICTURE MODE (VSM) BRIGHT
SUB POWER ON LANGUAGE ENGLISH (ENG)
CHANNEL POSITION 1 POSITION CHANNEL PRESET Refer to OPERATING INSTRUCTION
VOLUME About 10 ECO SENSOR OFF
TV/VIDEO TV VNR OFF
ON SCREEN DISPLAY POSITION INDICATION AUTO SHUTOFF OFF
COLOUR SYSTEM AUTO PAL ON TIMER PR1 0:00
SOUND SYSTEM B/G BLUE BACK OFF
OFF TIMER OFF ( shown : 00 ) CHILD LOCK OFF
Table 2
10 No. 51858
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
INITIAL SETTING VALUE OF SERVICE MENU
1. 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.
2. Do not change the initial Setting Values of the Setting (Adjustment) items not listed In "ADJUSTMENT".
2. V/C
Initial setting value
Colour system Variable
Setting item range PAL SECAM NTSC 3.58 NTSC 4.43
RED
1. CUT OFF GREEN -128+127 -50
BLUE
RED
2. DRIVE -128+127 +0
BLUE
3. BRIGHT -127+127 +0
4. CONT. -63+63 +0
5. COLOUR -63+63 +0
TV +0 +0
6. TINT -63+63
VIDEO +8 +0
7. SECAM BL ADJ. -31+31 +0
TV - 8(Fixed)
8. SHARP(Do Not Adj.) -32+31
VIDEO +15(Fixed)
3. DEFLECTION
Initial setting value
Setting item Variable range
fv : 50Hz MODE fv : 60Hz MODE
1. VER. POSITION -04 +03 -1 -3
2. HOR. POSITION -16 +15 +3 +3
3. VER. HEIGHT -64 +63 +35 +1
4. VER. LINEARITY -32 +31 +15 -1
5. VER. SCURVE -32 +31 +32 +0
6. HOR. VCO ADJUST -63 +62 +0 +0
4. VSM PRESET
VSM preset
VSM mode BRIGHT STANDARD SOFT
Setting item
TINT SETTING VALUE +15
COLOUR SETTING VALUE +15
BRIGHT SETTING VALUE +15
CONT. SETTING VALUE +30 +15 +11
SHARP SETTING VALUE +15 +12
No. 51858 11
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
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 SECAM NTSC 3.58 NTSC 4.43
1. C TRAP FIX 1 1 1 1
2. SHARP PEAK 0 0 0 0
3. ABL 1 1 1 1
4. GAMMA 0 0 0 0
TV 0 2 2 3
5. Y. DELAY TIME
VIDEO 0 2 0 2
6. BLACK EXP START 3 3 3 3
TV 1 1 0 0
7. C-BPF
VIDEO 1 1 1 1
8. CW / SCP 0 0 0 0
9. VIF DET LEVEL 0 0 0 0
11. IF AGC MIN 0 0 0 0
12. VIF AGC 0 0 0 0
13. VIF PMOD 0 0 0 0
19. VNR 15 15 15 15
20. RGB LIM 1 1 1 1
21. RGB LIMIT LEVEL 2 2 2 2
23. TEXT H. POSITION -3 -3 -3 -3
24. READ DATA
Sound System (Do Not Adjust)
Setting item B/G I D/K M
10. SIF DET LEVEL 0 0 0 0
14. SIF BPF BW ADJUST 0 (-) 0 (-) 0 (-) 0 (-)
15. SIF TRAP FO ADJUST 0 (-) 0 (-) 0 (-) 0 (-)
16. SIF TRAP FO ADJUST 2 0 (-) 0 (-) 0 (-) 0 (-)
17. SIF -TRAP 0 0 0 0
18. SIF -BPF 0 0 0 1
22. SIF SW 1 1 1 0
12 No. 51858
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
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 micro-
computer in accordance with the following procedures before starting adjustment.
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
1 2 3 4 5 6 7 8
No. 51858 13
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
SERVICE ADJUSTMENTS
BEFORE STARTING SERVICE ADJUSTMENT
1. There are 2 way of adjusting this TV: One is with the 6. Never touch any adjustment setting value, which are not
REMOTE CONTROL UNIT and the other is the conventional specified in the list for this adjustment.
method using adjustment parts and components. 7. Preparation for adjustment
2. The adjustment with the REMOTE CONTROL UNIT is made Unless otherwise specified in the adjustment instructions, preset
on the basis of the initial setting values. The setting values the following functions with the REMOTE CONTROL UNIT.
which adjust the screen to its optimum condition may differ User mode position
from the initial setting values.
PICTURE MODE (VSM) BRIGHT
3. Make sure that connection is correctly made to AC power
source. VNR OFF
4. Turn on the power of the set and equipment before use, and COLOUR / BRIGHT
CONT. / SHARP Refer to VSM PRESET
start the adjustment procedures after waiting at least 30 minutes.
5. Unless otherwise specified, prepare the most suitable reception BLUE BACK OFF
or input signal for adjustment.
OFF TIMER OFF
ECO SENSOR OFF
AUTO SHUT 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 Adjustment item
B1 POWER SUPPLY DEF. circuit adjustment
FOCUS adjustment VSM PRESET setting
IF circuit adjustment PURITY / CONVERGENCE adjustment
V/C (Video / Chroma) circuit
adjustment
14 No. 51858
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
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 PICTURE
MODE key
1-6 SELECT DISP : EXIT
***********
*********** **.***
*** ** ****
**** *** NUMBERS
key
Fig.1
DISPLAY key MENU
/ key
MENU
/key
(RM-C364GY)
No. 51858 15
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
[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 setting values of the setting 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.
16 No. 51858
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
SERVICE MENU FLOW CHART
SERVICE MENU SUB MENU 1. IF
VCO (CW) ***.** MHz
SERVICE MENU TOO HIGH
IF ABOVE REFERENCE
1.IF 2.V/C
3.DEF 4.VSM PRESET JUST REFERENCE
1. VCO BELOW REFERENCE
5.PRESET
2. DELAY POINT TOO LOW
6.TURBO TIMER OFF
AFT ADJUST ***(**)
1-6 SELECT DISP : EXIT VCO ADJUST ***(**)
****** ***** ** .*** 1-2 : SELECT DISP : EXIT FINE
DISP : EXIT
*** ** ** ** ***
6.TURBO TIMER OFF
DELAY POINT UHF
SUB MENU 2. V/C
ON / OFF
AGC TAKE-OVER**
(By pressing 6-key)
V/C PAL
- / + : OPERATE DISP : EXIT
1. CUTOFF (R) * **
(G)* **
(B) * **
50Hz
/ :SELECT
- / + : OPERATE DISP : EXIT
SUB MENU 3. DEF
DEF PAL
1. VER. POSITION ***
50Hz
/ :SELECT
- / + : OPERATE DISP : EXIT
SUB MENU 4. VSM PRESET
BRIGHT
TINT **
COLOUR **
BRIGHT **
CONT. **
SHARP **
/ :SELECT
- / + : OPERATE DISP : EXIT
SUB MENU 5. PRESET
PRESET PAL
1. C-TRAP FIX ***
50Hz B/G
/ :SELECT
- / + : OPERATE DISP : EXIT
No. 51858 17
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
ADJUSTMENT LOCATIONS
CRT SOCKET PWB (SOLDER SIDE)
TOP U
TP-47R/G
TP-47G/R TP-47B
TP-E
E1
T
CRT EARTH WIRE
(BRAIDED ASS'Y)
A/V INPUT Headphone
MAIN PWB
FRONT
POWER
SW
F901
IC701 IC702
MEMORY IC
PW
DEG
S
IC301 S1 HV
TU001
T
U
HVT
1Pin TP-91(B1) UPPER:FOCUS
ANT. Terminal
2Pin NC LOWER:SCREEN
3Pin X-ray1
A/V IN&OUTPUT Terminal
4Pin X-ray2
5Pin TP-E( )
18 No. 51858
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
ADJUSTMENTS
B1 POWER SUPPLY
Measuring
Item instrument Test point Adjustment part Description
Check of Signal TP-91 (B1) 1. Input a whole black signal.
B1 Power generator
#
TP-E (# ) 2. Connect a DC voltmeter to TP-91(B1) and TP-E (#).
Supply
DC Volt- 3. Make sure that the voltage is DC114.5±1.5V.
meter
FOCUS ADJUSTMENT
Measuring
Item instrument Test point Adjustment part Description
Adjustment Signal FOCUS VR 1. Input a cross-hatch signal.
of FOCUS generator [In HVT] 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
Measuring
Item instrument Test point Adjustment part Description
Adjustment Signal 1. VCO Please use signal generator which is correct proof about the
of VCO(CW) generator
sending frequency.
Remote
1. Input the PAL full colour bar (210.25MHz) signal.
control unit
2. Select 1.IF from the SERVICE MENU.
3. Press 1 key and select 1.VCO.
VCO (CW) ***.** MHz
4. Select VCO ADJUST with MENU / key.
TOO HIGH 5. Press MENU -/+ key until the colour of the characters TOO
ABOVE REFERENCE HIGH changes blue to yellow. Then gradually press the MENU
JUST REFERENCE YELLOW -/+ key until the TOO LOW changes yellow. At this time, confirm
BELOW REFERENCE
TOO LOW that the value of VCO ADJUST is near +00.
AFT ADJUST ***(**) 6. Select AFT ADJUST with MENU / key.
VCO ADJUST ***(**)
FINE
7. Press MENU -/+ key until the characters JUST REFERENCE
Do not adjust
DISP : EXIT changes blue to yellow.
8. Press the DISPLAY key three times to return to normal screen.
TOO HIGH
ABOVE REFERENCE
JUST REFERENCE
BELOW REFERENCE
TOO LOW
ADJUSTMENT AT THIS POINT IS USELESS ADJUSTMENT POINT
No. 51858 19
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
Measuring
Item instrument Test point Adjustment part Description
Adjustment Signal DELAY POINT 1. Input a black and white signal (colour off).
of DELAY generator (AGC TAKE-OVER) 2. Select 1. IF from the SERVICE MENU.
POINT Remote 3. Select 2. DELAY POINT by pressing the 2 key on the remote
(AGC) control unit 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
MA. MU. MU.
NTSC 3.58 (QAU0191-002) (QAU0185-004) (QAU0186-002)
DELAY POINT
0127 41 48 48
(AGC TAKE OVER)
OTHER
41 43 43
20 No. 51858
AV-21D10/AV-21DM10
AV-2134EE/AV-21DTG2
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".
Measuring
Item instrument Test point Adjustment part Description
Adjustment Signal 1. CUT OFF (R) 1. Input a black and white signal (colour off).
of WHITE generator CUT OFF (G) 2. Select 2. V/C from the SERVICE MENU, then select 1. CUT
BALANCE Remote CUT OFF (B) OFF (R), (G) and (B) .
(Low light) control unit 0. Set each value to initial setting value with 49 keys of the
SCREEN VR remote control unit.
[IN HVT] 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