In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and
only parts identical to those specified should be used.
21L-FG1RU
FEATURES
■ Multi 18 Systems
■ Full Auto Channel Preset and Auto
Channel Skip
■ 100-CH Program Memory
■ CATV (Hyper Band) Ready
<Used Frequency Synthesizer Tuner>
■ Black Stretch Circuit
■ On Timer/Off Timer/Reminder Timer
■ Blue Back Function
■ Aperture Control Circuit
■ Auto Fine Tuning
■ NTSC Colour Comb Filter (AV THRU)
■ High Contrast Picture
■ Hotel Mode
■ White Temperature Select
■ AV Ster e o
■ Multi Languages OSD
(English/Chinese/French/Malay and Arabic) for
Model 21L-FG1SA/SM
(English/Chinese/French/Malay/Arabic and
Russian) for Model 21L-FG1SF
(English and Russian) for Model 21L-FG1RU
The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug and power receptacle, when servicing
this chassis. To prevent electric shock, do not remove cover. No user-serviceable parts inside. Refer servicing to qualified service personnel.
CHAPTER 12. PRINTED WIRING BOARD ASSEMBLIES
[1] PWB-B: CRT UNIT ......................................12-1
[2] PWB-A: MAIN UNIT ....................................12-2
Parts Guide
Page 2
21L-FG1SA/SF/SM/RU
CHAPTER 1. SPECIFICATIONS
[1] SPECIFICATIONS
Convergence ................................................................................................................ Self Convergence System
Sweep Deflection ..................................................................................................................................... Magnetic
Intermediate Frequencies
Picture IF Carrier ................................................................................................................................. 38.9MHz
Power Input ..................................................................................................................... 110 ~ 240V AC 50/60 Hz
Cabinet material ..................................................................................................................................... All Plastics
Maintenance and repair of this receiver should be done by qualified service personnel only.
1. SERVICE OF HIGH VOLTAGE SYSTEM AND PICTURE TUBE
When servicing the high voltage system, remove static charge from it by connecting a 10K ohm resistor in series with an insulated wire (such as a test
probe) between picture tube dag and 2nd anode lead. (AC line cord should be disconnected from AC outlet.)
1) Picture tube in this receiver employs integral implosion protection.
2) Replace with the same type number of picture tube for continued safety.
3) Do not lift picture tube by the neck.
4) Handle the picture tube only when wearing shatterproof goggles and after discharging the high voltage completely.
2. X-RAY
This receiver is designed so that any X-Ray radiation is kept to an absolute minimum. Since certain malfunctions or servicing may produce potentially
hazardous radiation with prolonged exposure at close range, the following precautions should be observed:
1) When repairing the circuit, please make sure do not increase the high voltage of the set to more than 30.0kV (at beam 0µA).
2) To keep the set in a normal operation, please make sure it’s function at 26.8kV ± 1.0kV (at beam 1,100µA). The set has been factory - adjusted to
the above-mentioned high voltage.
*If there is a possibility that the high voltage fluctuates as a result of the repairs, never forget to check for such high voltage after the work.
3) Do not substitute a picture tube with unauthorizerd types and/or brands which may cause excessive X-ray radiation.
3. BEFORE RETURNING THE RECEIVER
Before returning the receiver to the user, perform the following safety checks.
1) Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the
receiver.
2) Inspect all protective devices such as non-metal control knobs, insulating materials, cabinet backs, adjustment and compartment covers or
shields, isolation resistor-capacity networks, mechanical insulators etc.
This model's setting are adjusted in two different ways: through the I2C bus control and in the conventional analog manner. The
adjustments via the I2C bus control include preset-only items and variable data.
CAUTION: Make sure TV set in "Normal condition" before switch to Service Mode for adjustment.
Setting the service mode by the microprocessor.
1.
i) Power OFF the TV set. Press both CH-UP and VOL-DOWN on the TV set and then turn on the Main Power simultaneously.
Wait for 5 seconds, the TV will switch to Service Mode and the micrprocessor is in input mode. (Adjustment through 12C bus
control) Service mode also can be reached by pressing “Service” key (code: 81 Hex)
ii) Press the MENU key on the remote controller to get ready to select the mode (Adjustment mode, Setting mode, Check mode and Option
mode) one by one.
iii)
Press the CH DOWN / UP key on the remote controller to select the item in Adjustment mode, Setting mode or Option mode.
iv) Using the VOLUME UP/ DOWN key on the remote controller, the data can be modified. Please wait approximately 200 msec for data storage
in EEPROM before select to another mode.
v) In Check mode the data cannot be changed.
vi) Press both CH-UP and VOL-DOWN buttons on the TV set simutaneously or press the “SERVICE” (81 HEX) key again, it will switch to the
NORMAL mode position, and the microprocessor is out of the SERVICE mode.
Factory Presetting.
2.
i) During Service mode, press both CH-UP and VOL-UP on the TV set simultaneously fro 5 seconds. Then release the CH-UP and VOL-UP but-
ton. Initial values are preset.
ii) The initial data are preset as listed in page 3-7 to 3-12.
iii) Make sure the data need modification or not (Initial data).
Precaution: If haven't done this initialization, it may possibly generate excessive Beam current.
3.
For reference please check with memory map RH-IXB725WJN1. (See Page 4-1 ~ 4-16)
3 – 1
Page 5
21L-FG1SA/SF/SM/RU
1. ADJUSTMENT ITEM
***Below are the adjustment items that should be done, PLS FOLLOW THE PROCEDURE. Otherwise some adjustment items will
not be accurate.
NO ***ADJUSTMENT ITEMEFFECTIVE MODELREVISION
1BUS SET UP
2OPTION SET UP
3H-VCO
4VIF-VCO
5S-TRAP fo
6RF-AGC
7PURITY ADJ
8CONVERGENCE ADJ
9FOCUS ADJ
10V-SHIFT (50 Hz)
11H-SHIFT (50 Hz)
12V-SIZE (50 Hz)
13SCREEN
14WHITE BALANCE
15SUB-BRIGHTNESS
16SUB-CONTRAST
17SUB-TINT
18SUB-COLOR
19SECAM-OFFSET
20BEAM CURRENT CHECK
21BEAM PROTECTOR CHECK
22HV PROTECTOR CHECK
23OTHER PROTECTOR CHECK
24AV OUT CHECK
25AV IN CHECK
26CONTRAST CONTROL CHECK
27COLOR CONTROL CHECK
28BRIGHTNESS CONTROL CHECK
29TINT CONTROL CHECK
30SHARPNESS CONTROL CHECK
31CH DISPLAY COLOR CHECK
32NORMAL DISPLAY CHECK
33WHITE TEMP CONTROL CHECK
34COLOR SYSTEM CHECK
35SURROUND CHECK
36TREBLE CHECK
37BASS CHECK
38BALANCE CHECK
39SOUND SYSTEM CHECK
40NOISE MUTE CHECK
41OSD LANGUAGE QUANTITY CHECK
42SHOCK TEST CHECK
43ROM CORRECTION CHECKING
ALL MODELS
3 – 2
Page 6
21L-FG1SA/SF/SM/RU
2. USER DATA IN SERVICE MODE
1) While SERVICE mode ON, EEPROM DATA will switch to the service data. Also, once SERVICE mode OFF, EEPROM will switch back to previous
USER DATA.
2) In the service mode, the user data establish as below,
USER DATA
CONTRASTMAX (60)
COLOUR CENT (0)
BRIGHTNESSCENT (0)
TINTCENT (0)
SHARPNESS CENT (0)
WHITE TEMPSTANDARD
S-VOLUMEMIN
SURROUNDOFF
TREBLECENT (0)
BASSCENT (0)
BALANCECENT (0)
BLUE BACK OFF
C SYSTEMAUTO
S SYSTEM *1
*1: For each CH, data is same as before switch to Service mode.
The flow of Mode list as following,
* Direct Key-in Mode for Service Items in Service Mode
RC CODE (HEX)R/C KEY NAMESERVICE-ITEM
80POS 1R-C UP (IN SERVICE MODE V00)
40POS 2G-C UP (IN SERVICE MODE V00)
C0POS 3B-C UP (IN SERVICE MODE V00)
20POS 4R-C DOWN (IN SERVICE MODE V00)
A0POS 5G-C DOWN (IN SERVICE MODE V00)
60POS 6B-C DOWN (IN SERVICE MODE V00)
E0POS 7R-D UP (IN SERVICE MODE V00)
10POS 8B-D UP (IN SERVICE MODE V00)
50POS 0B-D DOWN (IN SERVICE MODE V00)
E4FLASHBACKR-D DOWN (IN SERVICE MODE V00)
E4FLASHBACKY-MUTE (BESIDES OF SERVICE MODE V00)
75WHITE TEMP UPRF-AGC (V01)
F5WHITE TEMP DOWNVIF-VC0 (V02)
C2TUNE DOWNH-VCO (V03)
8DSHARPNESS DOWNSUB-CON (V04)
D6BALANCE LEFTSUB-COL (V05)
0DSHARPNESS UPSUB-BRIGHT (V06)
36BALANCE RIGHTSUB-TINT (V07)
46TREBLE UPSUB-SHP (V08)
C6TREBLE DOWNSUB-COL-YUV (V09)
26BASS UPSUB-TINT-YUV (V10)
24COLOUR UPV-SIZE (V11), V-SIZE60 (V17)
54BRIGHTNESS DOWNV-SHIFT (V12), V-SHIFT60 (V18)
74TINT DOWNH-SHIFT (V13), H-SHIFT60 (V19)
66SURROUND UPSCM-BR (V14)
E6SURROUND DOWNSCM-BB (V15)
C4CONTRAST DOWNSUB-VOL (V16)
NOTE: PLL DATA OF ABOVE FREQ SHOULD TAKE THE ACCOUNT OF PIF SETTING IN SERVICE OPTION O04 (VIF) BEFORE STORING INTO
EEPROM.
3 – 5
Page 9
3. SHIPPING SETTING & CHECKING
(1) The following default data has been factory-set for the E2PROM follow by INITIAL DATA selected.
21L-FG1SA/SF/SM/RU
ITEMSDATA SETTING
LAST POWERON
LAST TV/AV MODETV MODE
LAST POSITIONCH 1
FLASHBACK CHANNELCH 1
1/2 DIGIT ENTRY2 DIGIT ENTRY
VOLUME0 (Min)
BLUE BACKOFF
OFF TIMER--:-ON TIMER--:-ON TIMER POSITION-ON TIMER VOLUME-REMINDER--:-AFTALL CH ON
COLOR SYSTEMALL CH AUTO
SKIPALL CH OFF
CONTRAST60
COLOR0
BRIGHTNESS0
TINT0
SHARPNESS0
WHITE TEMP0
SURROUNDOFF
TREBLE0
BASS0
BALANCE0 (CENTER)
**AFTER INITIALIZED THE EEPROM (REFER TO FACTORY PRESETTING), READ DATA FROM EEPROM ADDRESS 00H ~ 03H, AND COMPARE TO THE LIST BELOW, IF DIFFERENT, INITIALIZE THE EEPROM.
ADDRESS DATAADDRESSDATA
00H:7BH02H:72H
01H:77H03H:75H
*** There are four stages of service mode data. First stage data from V00 ~ V31 (Adjustment Mode).
To go into second stage of service mode data, press MENU key. Second stage data from F01 ~ F140 (Setting Mode).
To go into third stage of service mode data, press MENU key. Third stage data is Check Mode.
To go into fourth stage of service mode data, press MENU key. Fourth stage data from O01 ~ O31 (Option Mode).
AGC LEVEL OF R2S15903SPF1470~3(OFF) / 4(300mVrms /
F1250(NORMAL) / 1(FAST)0FIX
F128-63~0~+630FIX
F129-63~0~+630FIX
F130-63~0~+630FIX
F133-31~0~+310FIX
F1340~42FIX
F136-63~0~+630FIX
5(400mVrms) /
6(500mC\Vrms)
INITIAL
DATA
FIX/ADJ/
AUTO
0FIX
REMARK
3 – 11
Page 15
21L-FG1SA/SF/SM/RU
OPTION MODE (FOURTH STAGE)
EEPROM ITEMSOSDDATA LENGTHINITIAL DATAREMARK
***HOTEL MODEO010 (0FF) / 1 (0N)0OPTION SET UP
***HTL-POSO020~99,----OPTION SET UP
***HTL-VOLO030~60,----OPTION SET UP
VIFO040 (38.0) / 1 (38.9)1OPTION SET UP
SECAMO050 (DISABLE) / 1 (ENABLE)1OPTION SET UP
N443(RF)O060 (DISABLE) / 1 (ENABLE)1OPTION SET UP
N358(RF)O070 (DISABLE) / 1 (ENABLE)1OPTION SET UP
FORCE-COLO080 (DISABLE) / 1 (ENABLE)0OPTION SET UP
S-SYSO091(BG ONLY)~15(ALL)15OPTION SET UP
AVO100 (DISABLE) / 1 (ENABLE)1OPTION SET UP
AV2O110 (DISABLE) / 1 (ENABLE)1OPTION SET UP
YUVO120 (DISABLE) / 1 (ENABLE)1OPTION SET UP
S-CTRLO130 (DISABLE) / 1 (ENABLE)1OPTION SET UP
NICAMO140 (DISABLE) / 1 (ENABLE)0OPTION SET UP
A2O150 (DISABLE) / 1 (ENABLE)0OPTION SET UP
TELETEXTO160 (DISABLE) / 1 (ENABLE)0OPTION SET UP
BILLINGUALO170 (DISABLE) / 1 (ENABLE)0OPTION SET UP
LANGUAGEO181~25563OPTION SET UP
SEARCH-SPEEDO191(350)~2(450)~3(550)~4(650)~5(750)3OPTION SET UP
R/C-MENUO200 (ENABLE) / 1 (DISABLE)0OPTION SET UP
LED-CONTO210 (ONE LED) / 1 (TWO LED)0OPTION SET UP
S-BOOSTERO220 (DISABLE) / 1 (ENABLE)0OPTION SET UP
SHARP-LOGOO230 (DISABLE) / 1 (ENABLE)0OPTION SET UP
YUV BKGD ADJO240 (DISABLE) / 1 (ENABLE)0OPTION SET UP
WHITE BACKO250 (DISABLE) / 1 (ENABLE)1OPTION SET UP
BOOSTERO260 (DISABLE) / 1 (ENABLE)0OPTION SET UP
****MESSAGEO270 (DISABLE) / 1 (ENABLE)0OPTION SET UP
****MESSAGE SCROLL TIMEO28Message Display Timing0OPTION SET UP
LNA TUNERO290(Alps) / 1(Matsushita)0OPTION SET UP
ONE CHIP ICO300(M61260 & M61262) / 1(M61266)0OPTION SET UP
MESSAGE INPUT TIMMINGO310~42OPTION SET UP
SOUND ICO320 (NJW1142) / 1 (R2S15903SP)0OPTION SET UP
SOUND CONTROLO330 (DISABLE) / 1 (ENABLE)0OPTION SET UP
H-SYNC-JUDGEO340 (DISABLE) / 1 (ENABLE)1OPTION SET UP
*** HOTEL MODE
OPERATION OF HOTEL MODE:
WHEN CHANGE SERVICE DATA O01 TO 1, HOTEL MODE IS ON
WHEN HOTEL MODE IS ON,
1. Max volume data is determined by option setting HTL-VOL (O03)
2. Channel position after POWER ON is determined by option setting HOTEL-POS (O02) (if option setting HOTEL-POS
is not set, processing is according to last position data).
3. User data updates of EEPROM regarding the video and audio control is not allowed.
4. Preset mode is disable.
5. CH SETTING menu is not available.
3 – 12
Page 16
21L-FG1SA/SF/SM/RU
4. ADJ ITEM: BUS SET UP (1 ST & 2ND STAGE SERVICE DATA)
SERVICE ITEMS21L-FG1SA/SF/SM21L-FG1RUREMARK
V08SUB-SHARPNESS4646
V17V-SIZE 60Hz44
V28VS-CORRECT3838ADJUST IF NECESSARY
TO IMPROVE
V29VC-CORRECT OFFSET-6-6
V30V LINEARITY1010ADJUST IF NECESSARY
ADJUSTMENT PRECAUTION: Makesure TV Set is in “Normal Condition” before switch to Service Mode for Adjustment.
1. PIF ADJUSTMENT
No.
Adjustment point
Tuner IFT
11. Get the tuner ready to receive the CH. E - 9
( PRESET )
Adjustment procedure/conditionsWaveform and others
signal,but with no signal input.
Adjust the PLL data.
2. Connect the sweep generator's output cable to
the tuner antenna. ( RF SWEEP )
3. Adjust the sweep generator's to 80dBµV.
4. Connect the response lead ( use LOW IMPEDANCE probe with wave detector ; see Fig.1 ) to
the tuner's IF output terminal. ( This terminal must
have the probe alone connected ).
5. Set the RF AGC to 0 - 6 V with no saturation with
the waveform.
6. Adjust the tuner IF coil to obtain the waveform as
showninFig.2.
Note: Be sure to keep the tuner cover in posi-
tion during this adjustment.
2
RF-AGC
TAKE OVER
1. Receive "PAL COLOUR BAR" signal.
Signal Strength: 56 ± 1dBµV (75 ohm open)
POINT ADJUSTMENT
2
(I
C BUS
CONTROL)
(AUTO &
MANUAL ADJ)
2. Connect the oscilloscope to TP201 (Tuner’s AGC
Terminal) as shown in Fig. 3-1.
Oscilloscope
0.1V
TP201+
—
Bias box
TV Set
+
—
»»Bias box: About 4.5 V
1000p
10k
Oscilloscope
100k
1n60
1000p
IF OUT
75ohm
Fig.1
E-9 CH
PC
-1.5+/-0.8dB
Fig.2
* for Auto ADJ
1)Receive “PAL COLOUR BAR”
signal.
signal strength: 56
± 1dBµV(75
ohm open)
1)Go to service mode.
2)Go to service data V01, press
R/C to operate auto key (Hex
C1) and confirm the ‘OK’
display on the screen.
3)If appear NG, increase data
some step and pls repeat step
4)Proceed step 4 & 5 in manual
mode.
2.
Fig. 3-1
3. Call "V01" mode in service mode. Adjust the "V01"
bus data to obtain the Tuner output pin drop
0.1~1.0V below maximum voltage.
4. Change the antenna input signal to 63~67dBµV,
and make sure there is no noise.
5. Turn up the input signal to 90~95 dBµVtobesure
that there is no cross modulation beat.
3 – 15
Page 19
2. PURITY ADJUSTMENT
21L-FG1SA/SF/SM/RU
No.
Adjustment point
PURITY ADJ.1
Adjustment procedure/conditionsWaveform and others
1. Receive the GREEN-ONLY signal. Adjust the
beam current to ~700 µA.
2. Degauss the CRT enough with the degausing coil.
Note: Follow the Job Instruction Sheet to adjust
the magnetic field.
(Reference: page 3-6)
3. Maintain the purity magnet at the zero magnetic
field and keep the static convergence roughly
adjusted.
4. Observe the points a, b,as shown in Fig. 1-1
through the microscope. Adjust the landings to A
rank requirement.
5. Orient the raster rotation to 0 eastward.
6. Tighten up the deflection coil screws.
Tightening torque: 108 ± 20N(11kgf± 2kgf)
7. Make sure the CRT corners landing meet the A
rank requirements. If not, stick the magnet sheet
to correct it.
Note: This adjustment must be done after
warming up the unit for 30 minutes or
longer with a beam current over 700
Note:
Set to service mode by remote con-
µ
A.
troller then press factory process R/C
RGB key to change to RGB mono colour mode.
* For the following colours press R/C RGB(Hex 7E)
key to change.
a
30mm30mm
Fig. 1-1
b
A
B
A=B
Fig. 1-2
Rank "A"
(on the right of the CRT)
GREEN
ONLY
BLUE
ONLY
Signal-colour
screen cleared
A
RED
ONLY
B
A=B
Fig. 1-3
Rank "A"
(on the left of the CRT)
* Press R/C RGB key for 1 sec-
ond in NORMAL MODE, the
colour will change to RGB
mono colour mode.
3 – 16
Page 20
21L-FG1SA/SF/SM/RU
3. CONVERGENCE ADJUSTMENT
No.
1
Adjustment point
CONVERGENCE
ADJ.
(Tobedone
after the purity
adjustment.)
Adjustment procedure/conditionsWaveform and others
1. Receive the "Crosshatch Pattern" signal.
2. Using the remote controller, call NORMAL mode.
Static convergence
1. Turn the 4-pole magnet to a proper opening angle in order to superpose the blue and red colours.
2. Turn the 6-pole magnet to a proper opening angle in order to superpose the green colour over
the blue and red colours.
Dynamic convergence
1. Adjust the convergence on the fringes of the
screen in the following steps.
a) Fig. a: Drive the wedge at point "a" and swing
the deflection coil upward.
b) Fig. b: Drive the wedge at point "b" and "c" and
swing the deflection coil downward.
c) Fig. c: Drive the "c" wedge deeper and swing
the deflection coil rightward.
d) Fig. d: Drive the "b" wedge deeper and swing
the deflection coil leftward.
2. Fix all the wedges on the CRT and apply glass
tape over them.
3. Apply lacquer to the deflection yoke lock screw ,
magnet unit (purity, 4-pole, 6-pole magnets) and
magnet unit lock screw.
BGR
B
G
R
Fig. a
RGB
R
G
B
Fig. b
B
RGB
G
R
Fig. c
R
BGR
G
B
Finally received the Red-only and Blue-only signals to make sure there is no other colours on the
screen.
4-pole magnet
6-pole magnet
CRT neck
Lacquer
Purity magnet
20mm
About
100Deg
Lacquer
Wedge
"b"
Fig. d
Wedge "a"
About
100Deg
Wedge
"c"
3 – 17
Page 21
4. H-VCO, VIF-VCO & S-TRAP fo ADJUSTMENT
21L-FG1SA/SF/SM/RU
No.
1
2
Adjustment point
H-VCO ADJ
2
(I
C BUS
CONTROL)
(AUTO &
MANUAL ADJ)
VIF-VCO ADJ
2
(I
C BUS
CONTROL)
(AUTO &
MANUAL ADJ)
Adjustment procedure/conditionsWaveform and others
(MANUAL ADJ)
1) In No signal (RASTER) condition.
2) Go to service mode, choose service data V03.
3) Connect oscilloscope to IC801 pin15, adj V03 until
freq become 15.625±0.15 KHz
(Auto Adj)
1) In No signal (RASTER) condition.
2) Go to service mode.
3) Choose service data V03, by pressing R/C Auto(Hex C1) key, OSD will appear “OK” at screen.
4) If appear “NG” pls repeat step 3.
(Manual ADJ)
1) In No signal (RASTER) condition.
2) Go to service mode, choose service data V02.
3) Connect oscilloscope to IC801 pin9, adj V02 until
voltage become 2.5±1V.
(Auto Adj)
1) In No signal (RASTER) condition.
2) Go to service mode, choose service data V02.
3) Press the R/C Auto (Hex C1) key, OSD will appear
“OK” at screen.
4) If appear “NG” pls repeat step 3.
This adjustment must be done
after aging at least 3 minutes.
S-TRAP fo
3
ADJ
2
(I
CONTROL)
(AUTO &
MANUAL ADJ)
C BUS
(Manual ADJ)
1) In No signal (RASTER) condition.
2) Go to service mode, choose service data V21.
3) Connect oscilloscope to TP 801, adj V21 until
voltage become Min (below 5 V).
4) After that pls adj service data V20 & V24 same as
“V21”, V22 to “V21-1”, V23 to “V21+2”.
(Auto Adj)
1) In No signal (RASTER) condition.
2) Go to service mode, choose service data V21.
3) Press the R/C Auto (Hex C1) key, OSD will appear
“OK” at screen.
4) If appear “NG” pls repeat step 3.
3 – 18
Page 22
21L-FG1SA/SF/SM/RU
5. SCREEN, WHITE BALANCE, SUB-BRIGHTNESS & SUB-CONTRAST ADJUSTMENT
No.
Adjustment point
1
SCREEN
ADJUSTMENT
2
C BUS
(I
CONTROL)
Adjustment procedure/conditionsWaveform and others
1) In window pattern signal condition.
2) Go to service mode, then select V00.
3)
By pressing R/C key S-Mute (Hex E8), R-D
auto switch to 63, B-D auto switch to 63, R-
C auto switch to 127, G-C auto switch to
127, B-C auto switch to 127, Subbrightness V06 auto switch to 127.
Y-mute & Vertical off, screen will be in
vertical cut-off condition.
4)
Adjust the Screen so that cut-off line ap-
R-CUTOFF (R-C) UP
R-CUTOFF (R-C) DOWN
G-CUTOFF (G-C) UP
G-CUTOFF (G-C) DOWN
B-CUTOFF (B-C) UP
B-CUTOFF (B-C) DOWN
R-DRIVE (R-D) UP
R-DRIVE (R-D) DOWN
B-DRIVE (B-D) UP
B-DRIVE (B-D) DOWN
pear in low bright, then judge that whether
the cut-off line appear in Red or Green or
Blue color, in this condition between R-C &
G-C & B-C, fix the data of the color appear
in cut-off line and adj the other two cut-off
data (Note 1) so that cut-off line color become white.
Turn the screen VR of FBT so that cut-off
line just disappear and use R/C by pressing key S-Mute (Hex E8) to disable the Ymute & V-cut so that picture appear in normal mode.
WHITE (HIGH BEAM) ( In Window Pattern
1)
Signal)
First use Minolta Color Analyzer CA100, let
the gun point at Dark White position (as
drawing attach), Adj V06 until LUMI-NANCE Y become 5 cd/m2, then let the
gun point at White position ( as drawing attach), Adj V04 until LUMINANCE Y become: 160 cd/m2.
Adj the R-D & B-D until the axis of color
temperature become
o
KX : 0.300
7500
Y : 0.310 (21L-FG1RU)
Y : 0.275 (21L-FG1SA/SM)
12300
18000
o
KX : 0.272
o
KX : 0.255
Y : 0.255 (21L-FG1SF)
DARK WHITE (LOW BEAM) (In Window
2)
Pattern Signal)
Let the gun point at Dark White position, if
the color temperature data shift away from
the data adjusted in step 1, adjust R-C, G-
C & B-C but between them, first color
appears in Screen adj item 1)-4 is fixed,
adj the other two so that to obtain the similar axis as above.
** Repeat step 1 & 2 to get a regulated
position
5.5% IRE
*Note :
WINDOW PATTERN SIGNAL
White
50% IRE
Signal using W/B Pattern Generator
SX-1006 (IWATSU) or equivalent.
Window Pattern Signal output level
are as above:
Dark White
9.5% IRE
3 – 19
Page 23
No.
Adjustment point
21L-FG1SA/SF/SM/RU
Adjustment procedure/conditionsWaveform and others
SUB-
3
BRIGHTNESS
(to be done
after screen,
white balance
adj)
(12C BUS
CONTROL)
SUB-
4
CONTRAST
(to be done
after screen,
white balance
adj,
sub-brightness adj)
(I
CONTROL)
2
C BUS
1) In Window Pattern Signal condition.
2)
Using Minolta Color Analyzer CA-100, let the
gun point at Dark White position (as attach
drawing), adjust V06 Bus data until
LUMINANCEY=3± 0.5 cd/m2.
1) In Window Pattern Signal condition.
2)
Using Minolta Color Analyzer CA-100, let the
gun point at White position (as attach drawing),
adjust V04 Bus data until LUMINANCE Y = 160
± 10cd/m2
WINDOW PATTERN SIGNAL
Dark White
WINDOW PATTERN SIGNAL
White
Beam Current
5
Check
1) Receive the “Monoscope Pattern” signal.
2) Press R/C to set Picture NORMAL condition.
3) Connect the DC miliammeter between TP 603
(+)&TP602(-).
(Full Scale: 3mA Range)
4) Beam current must be within 1000±100
µA .
3 – 20
Page 24
21L-FG1SA/SF/SM/RU
6. HORIZONTAL, VERTICAL, DEFLECTION LOOP and FOCUS ADJUSTMENT
No.
Adjustment point
H-SHIFT
1
2
C BUS
(I
CONTROL)
(to be done
after purity adj)
V-SHIFT
2
2
C BUS
(I
CONTROL)
(to be done
after purity adj)
1) Receive Monoscope Pattern Signal (PAL 50Hz).
2) Choose the service data V13.
3) Adjust the V13 bus data to have a balance position to
spec of A=B (as attach drawing).
4) If cannot make it to A=B, adjust from the best point so
that B slightly smaller than A.
1) Receive Monoscope Pattern Signal (PAL 50Hz).
2) Choose the service data V12.
3) Adjust the V12 bus data to have a most acceptable
vertical position, the monoscope pattern should be
Balance in vertical position.
Note: B line (Monoscope middle line) must same or
nearest higher position to the A mark (Tube middle
mark), refer to the attach drawing.
Adjustment procedure/conditionsWaveform and others
V-SIZE
3
2
(I
CONTROL)
(to be done
after purity,
C BUS
1) Receive Monoscope Pattern Signal (PAL 50Hz).
2) Choose the service data V11.
3) Adjust V11 bus data until the overscan become
10 1.5%.
Caution: Pls aging TV more than 10 minutes
V-shift adj)
SUB-
4
1) Confirm Service data V08 is 46.
SHARPNESS
FOCUS
5
1) Receive the "Monoscope Pattern" signal.
2) Press R/C to set Picture NORMAL condition.
3) Adjust the focus control to get the best focusing.
7. PAL CHROMA ADJUSTMENT
No.
Adjustment point
1
SUB COLOUR
2
C BUS
(I
CONTROL)
1) Receive the “PAL Colour Bar” signal.
2) Press R/C to set Picture Normal condition.
3) Connect the oscilloscope to R-Amp Transistor
(to be done
after subpicture, subtint adj)
4) Using the R/C call V05 in SERVICE mode. Ad-
5) Clear the SERVICE mode.
before adjustment.
Adjustment procedure/conditionsWaveform and others
CyGB
Base(JUMPER 401).
Range :100mV/Div (AC)
(Using 10:1 Probe)
Sweep Time : 10 msec/Div
just V05 bus data, so that the 75% White & Red
75%
Y 100% W Mg R
W
portions of PAL Colour Bar be at the same level
shown as Fig 1-1.
Fig. 1-1
Focusing Point
(middle of center
and edge of
monoscope
pattern)
3 – 21
Page 25
8. NTSC CHROMA ADJUSTMENT
No.
Adjustment point
SUB-TINT
1
2
(I
C BUS
CONTROL)
1) Receive the "NTSC 3.58 Color Bar" signal thru
AV in.
2) Connect the oscilloscope to B-Amp Transistor
Base (JUMPER 410).
3) In Service mode, go to V07, press R/C Y-mute(Hex F4) or FLASHBACK Key.
4) Call the "V07" data in service mode. Adjust the
"V07" bus data to obtain the waveform shown as
Fig. 1-1.
5) Disable Y-Mute by pressing key (Hex E4) or
FLASHBACK, then clear the SERVICE mode.
Adjustment procedure/conditionsWaveform and others
Adjustment procedure/conditionsWaveform and others
1) Receive “SECAM COLOUR BAR” signal.
2) In the service mode, select service data V14.
3) Connect oscilloscope to TP 801.
Range: 20mV/Div. (AC)(Use Probe 10:1)
Sweep time : 20 µsec/Div.
4) Adjust the V14 so that the offset of R-Y is minimum, shown in Fig 2-1(b), it means adjust the
offset of between No signal line and Signal line to
minimum.
5) In the service mode, select service data V15.
6) Connect oscilloscope to TP 801.
Range: 20mV/Div. (AC)(Use Probe 10:1)
Sweep time : 20 µsec/Div.
7) Adjust the V15 so that the offset of B-Y to minimum, shown in Fig 2-2(b), it means adjust the
offset of between No signal line and Signal line to
minimum.
Offset
Fig 2-1(a)
Fig 2-1(b)
Offset
Fig 2-2(a)
3 – 22
Fig 2-2(b)
Page 26
21L-FG1SA/SF/SM/RU
10. PROTECTOR OPERATION CHECKING
No.
11. A/V INPUT, OUTPUT CHECKING
Adjustment point
BEAM1) Receive "Monoscope Pattern" signal.
1* Select one of Q853/4/5 to do
PROTECTOR
H, V PROTECTOR1) Receive "Monoscope Pattern" signal.
2
OTHER
3
PROTECTOR
2) Set CONTRAST MAX.
3) Set BRIGHT MAX.
4) During the Collector & Emitter of Q853/4/5 short,
2) Connect output of Bias Box to D602 cathode
3) Set voltage of Bias Box to 18V and make sure
4) Set voltage of Bias Box to 27V , and make sure
1) Once finish rectified Electrolytic Capacitor short
Adjustment procedure/conditionsWaveform and others
each short.
make sure the protector ON and switch to standby
mode.
(C602 positive).
the protector is not working.
the protector is working.
testing in +B line, check all possible damaged
components on +B line.
(Use random selected set for inspection)
No.
1
2
Adjustment point
VIDEO AND
AUDIO
OUTPUT
CHECK
VIDEO AND
AUDIO INPUT
CHECK
Adjustment procedure/conditionsWaveform and others
1) Receive the "PAL Color Bar" signal (100%
White Color Bar, Sound 400 Hz 100% Mod).
2) Terminate the Video output with a 75 ohm
impedance. Make sure the output is as
specified (1.0 Vp-p
3) Terminate the Audio output with a 10K ohm
impedance. Make sure the O/P is as specified
(1.5 Vp-p
1) Using the TV/VIDEO key on the remote
controller, make sure that the modes change in
order of TV, AV & TV again and the video &
audio output are according to the input terminal
for each mode.
TINT key1) Receive the "NTSC Colour Bar" signal thru AV in.
4
1) Receive "Colour Bar" signal.
2) Set MENU, then go into PICTURE mode to se-
3) Press Volume Up/Down key to check whether the
2) Set MENU, then go into PICTURE mode to se-
3) Press Volume Up/Down key to check whether the
2) Set MENU, then go into PICTURE mode to se-
3) Press Volume Up/Down key to check TINT, UP
Adjustment procedure/conditionsWaveform and others
lect CONTRAST.
CONTRAST effect is OK or not.
lect COLOUR.
COLOUR effect is OK or not.
lect BRIGHTNESS.
BRIGHTNESS effect is OK or not.
lect TINT.
for GREEN direction and DOWN for PURPLE direction whether is OK or not.
5
6
8
SHARPNESS
Key
CH DISPLAY
COLOUR
NORMAL Key7
WHITE TEMP
1) Receive "Monoscope Pattern" signal.
2) Set MENU, then go into PICTURE mode to se-
lect SHARPNESS.
3) Press Volume Up/Down key to check whether
the SHARPNESS effect is OK or not.
1) All Ch (1~99) will have an OSD display of the
channel number in green colour under AFT ON
condition.
Once in PICTURE or SOUND Mode, and the NOR-
1)
MAL key is pressed, all the settings will be preset to
normal setting accordingly.
(Normal setting value for every mode)
PICTURE MODE
CONTRAST
COLOUR
BRIGHTNESS
TINT
SHARPNESS
WHITE TEMP
1) Receive "Monoscope Pattern" signal.
2) Set MENU, then go into PICTURE mode to se-
lect WHITE TEMP.
3) Press Volume Up/Down key to check WHITE
TEMP function The back ground will change to
(shift right) bluish and (shift left) reddish.
:MAX
:CENTER
:CENTER
:CENTER
:CENTER
:CENTER
*SOUND MODE
SURROUND
TREBLE
BASS
BALANCE
: OFF
:CENTER
:CENTER
:CENTER
In NORMAL Mode, when press
NORMAL key, willappear
NORMAL OSD and all setting
PICTURE, SOUND functions
set to NORMAL.
3 – 24
Page 28
21L-FG1SA/SF/SM/RU
No.
Adjustment point
COLOUR
9
SYSTEM
Adjustment procedure/conditionsWaveform and others
Receive the "PAL COLOUR BAR" signal, press
1)
MENU, choose CH-SETTING to select COLOR
modes except PAL, check the COLOUR is not
working properly. Then, select the "PAL" mode.
Check again its colour so that it is working properly.
Receive "SECAM COLOUR BAR" signal, press
2)
MENU, choose CH-SETTING to selectCOLOR
modes except SECAM, check the COLOUR is not
working properly. Then, select the "SECAM" mode.
Check again its colour so that it is working properly.
Receive "NTSC 4.43" signal, press MENU, choose
3)
CH-SETTING to select COLOR modes except
N443, check the COLOUR is not working properly.
Then, select the N443 mode. Check again its colour so that it is working properly.
Receive "NTSC 3.58" signal thru AV, press MENU,
4)
choose CH-SETTING to select COLOR modes except N358, check the COLOUR is not working
properly. Then, select the N358 mode. Check again
its colour so that it is working properly.
10
14
SURROUND
TREBLE11
BASS12
BALANCE13
NOISE MUTE
CHECKING
1)
Receive "music" sound signal.
2)
Set MENU, then go into SOUND MENU to select
SURROUND.
3)
PressVOLUME UP/DOWN key to check SURROUND I, II and OFF effect.
1)
Receive "music" sound signal.
2)
Set MENU, then go into SOUND MENU to select
TREBLE.
3)
Press VOLUME UP/DOWN key to check whether
the TREBLE effect is OK or not.
1)
Receive "music" sound signal.
2)
Set MENU, then go into SOUND MENU to select
BASS.
3)
Press VOLUME UP/DOWN key to check whether
the BASS effect is OK or not.
1)
Receive mono-tone signal.
2)
Set MENU, then go into SOUND MENU to select
BALANCE.
3)
Press VOLUME UP/DOWN key to check whether
the left to right BALANCE effect is OK or not.
1)
Receive "PAL COLOUR BAR" signal.
2)
Turn up the volume control to maximum, make sure
the sound is heard from the speakers. Then put the
unit in no signal state.
3)
Check the sound mute is effective.
4)
Finally turn sound level of CTV to minimum.
Note:
1. AV STEREO MODELS ONLY
2. IF SURROUND l/ll ON, BALANCE
FUNCTION CANNOT BE
ADJUST.
Note:
1. AV STEREO MODELS ONLY
Note:
1. AV STEREO MODELS ONLY
Note:
1. AV STEREO MODELS ONLY
2. IF BALANCE ARE ADJUSTED,
AND NOT AT '0', SURROUND
CANNOT BE ON.
1)
then go into SOUND mode to select B/G, I, M. Check the sound
output is not working properly. Select D/K and check the sound
output to make sure it is working properly.
Receive "PAL-I" signal, press MENU, choose CH-SETTING then
2)
go into SOUND mode to select B/G, D/K, M. Check the sound output is not working properly. Select I and check the sound output to
make sure it is working properly.
3)
then go into SOUND mode to select I, D/K, M. Check the sound
output is not working properly. Select B/G and check the sound
output to make sure it is working properly.
21L-FG1SA/SF/SM/RU
Waveform and others
16OSD
LANGUAGE
QUANTITY
CHECK
1)Check OSD LANGUAGE quantity and type for respect model.
MODEL
21L-FG1SF
21L-FG1SA/SM
21L-FG1RU2OO----
13. SHOCK TEST CHECKING
No.
Adjustment point
SHOCK TEST1) Hit at the top of TV set for two time.
1
2) Check TV set not damage and TV operation operate correctly.
14. ROOM CORRECTION CHECKING
QUANTITY
ENGLISH RUSSIAN CHINESE FRENCH ARABIC MALAY
6
5
O
O
O
-
O
O
O
O
O
O
O
O
Adjustment procedure/conditionsWaveform and others
No.
Adjustment point
ROM CORRECTION
1
CHECK
Adjustment procedure/conditionsWaveform and others
Go to SERVICE mode, press "MENU" key until the
1)
SERVICE mode display as in Figure 1 appeared.*
Check the ROM CORRECTION status by monitoring the
2)
screen, follow the model's setting.
MODELMicon Version
ALL MODELS
RH-IXB725WJN1(Software Ver. 1.25)ACTNO
CHK1CHK2FIGURE
CHK1: 1a. During channel changing, set Halfh-Killer
(21h:D6) to "L" during AV mute.
1b. Fix Killer-Level (15h:D0) to "1".
3 – 26
* OTHERS:
INFO
SLV100
SLV200
SLV300
SLV800
MICON : N1CHK1 : ACT
SOFT : 1.25 CHK2 : NO
Figure 1
Page 30
21L-FG1SA/SF/SM/RU
15. ROOM CORRECTION DATA
MCU:R2J10162GC-A09FP
Soft Ver. V1.25
Date17/04/2006
ROMCORRECT1 ...1a. During Channel changing, set Halfh-Killer (21h:D6) to “L” during av mute.
1.
LET BEFORE REPLACING PARTS.
SEMICONDUCTOR HEAT SINKS SHOULD BE RE-
2.
GARDED AS POTENTIAL SHOCK HAZARDS
WHEN THE CHASSIS IS OPERATING.
IMPORTANT SAFETY NOTICE:
PARTS MARKED WITH "" () ARE IMPOTANT FOR MAINTAINING THE SAFETY OF THE SET.
BE SURE TO REPLACE THESE PARTS WITH SPECIFIED ONES FOR MAINTAINING THE SAFETY AND
PERFORMANCE OF THE SET.
SERVICE PRECAUTION:
THE AREA ENCLOSED BY THIS LINE (-) IS DIRECTLY CONNECTED WITH AC MAINS VOLTAGE.
WHEN SERVICING THE AREA, CONNECT AN ISOLATING TRANSFORMER BETWEEN TV RECEIVER AND
AC LINE TO ELIMINATE HAZARD OF ELECTRIC
SHOCK.
NOTES:
The unit of resistance "ohm" is omitted.
1.
(K = 1000 ohms, M = Mega ohm).
All resistors are 1/16 watt, unless otherwise noted.2.
All capacitors are µF, unless otherwise noted.
3.
(P = µµF).
VOLTAGE MEASUREMENT CONDITIONS:
Voltages in parenthesis measured with no signal.1.
Voltages without parenthesis measured with 3mV B & W
2.
or Colour signal.
All the voltages in each point are measured with VTVM.3.
WAVEFORM MEASUREMENT CONDITIONS:
The colour bar generator signal of 1.0V peak applied at
1.
pin (41) of IC801.
32
Approximately 4V AGC bias.2.
CAUTION:
This circuit diagram is a standard one, prited circuits may
be subject to change for product improvement without prior notice.
Parts marked with "" are important for maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and performance of the set.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
DUNTKD746WEA0--[MAIN Unit ( 21L-FG1SA )]
DUNTKD746WEA1--[MAIN Unit ( 21L-FG1SF )]
DUNTKD746WEA5--[MAIN Unit ( 21L-FG1SM )]
DUNTKD746WEA3--[MAIN Unit ( 21L-FG1RU )]
DUNTKD747WEA0--[CRT Unit (21L-FG1SA )]
DUNTKD747WEA1--[CRT Unit (21L-FG1SF )]
DUNTKD747WEA5--[CRT Unit (21L-FG1SM )]
DUNTKD747WEA3--[CRT Unit (21L-FG1RU )]
RJ1 VRS-CY1JF000JYAAR[0 1/16W Metal Oxide]
RJ2 VRS-CY1JF000JYAAR[0 1/16W Metal Oxide]
RJ5 VRS-CY1JF000JYAAR[0 1/16W Metal Oxide]
RJ6 VRS-CY1JF000JYAAR[0 1/16W Metal Oxide]
DESCRIPTION
4
Page 71
21L-FG1SA/SF/SM/RU
NO.PARTS CODE
[3] MAIN UNIT
RJ7 VRS-CY1JF000JYAAR[0 1/16W Metal Oxide]
RJ8 VRS-CY1JF000JYAAR[0 1/16W Metal Oxide]
RJ12 VRS-CY1JF000JYAAR[0 1/16W Metal Oxide]
RJ13 VRS-CY1JF000JYAAR[0 1/16W Metal Oxide]
RJ15 VRS-CY1JF000JYAAR[0 1/16W Metal Oxide]
RJ16 VRS-CY1JF000JYAAR[0 1/16W Metal Oxide]
R201 VRS-CY1JF101JYAAR[100 1/16W Metal Oxide]
R202 VRS-CY1JF101JYAAR[100 1/16W Metal Oxide]
R204 VRS-CY1JF332JYAAR[3.3K 1/16W Metal Oxide]
R216 VRS-RG3LB393J+ACR[39K 3W Metal Oxide]
R301 VRD-RA2BE102JYAAR[1K 1/8W Carbon]
R302 VRN-RL3DBR56J+ABR[56 2W Metal Film]
R303 VRS-CY1JF473JYAAR[47K 1/16W Metal Oxide]
R304 VRD-RA2BE683JYAAR[68K 1/8W Carbon]
R305 VRS-CY1JF274JYAAR[270K 1/16W Metal Oxide]
R307 VRS-CY1JF102JYAAR[1K 1/16W Metal Oxide]
R308 VRD-RA2BE562JYAAR[5.6K 1/8W Carbon]
R314 VRD-RA2BE562JYAAR[5.6K 1/8W Carbon]
R315 VRS-CY1JF102JYAAR[1K 1/16W Metal Oxide]
R353 VRS-CY1JF102JYAAR[1K 1/16W Metal Oxide]
R356 VRD-RA2BE102JYAAR[1K 1/8W Carbon]
R362 VRS-CY1JF332JYAAR[3.3K 1/16W Metal Oxide]
R366 VRS-CY1JF332JYAAR[3.3K 1/16W Metal Oxide]
R372 VRS-CY1JF104JYAAR[100K 1/16W Metal Oxide]
R373 VRS-CY1JF103JYAAR[10K 1/16W Metal Oxide]
R374 VRS-CY1JF104JYAAR[100K 1/16W Metal Oxide]
R376 VRD-RA2BE472JYAAR[4.7K 1/8W Carbon]
R391 VRN-RL3ABR22J+ABR[22 1W Metal Film]
R458 VRS-CY1JF103JYAAR[10K 1/16W Metal Oxide]
R459 VRD-RA2EE750JYAAR[75 1/4W Carbon]
R461 VRS-CY1JF750JYAAR[75 1/16W Metal Oxide]
R462 VRD-RA2BE101JYAAR[100 1/8W Carbon]
R503 VRN-RL3DB1R0J+ABR[1 2W Metal Film]
R504 VRS-CY1JF222JYAAR[2.2K 1/16W Metal Oxide]
R506 VRS-RG3AB331J+ABR[330 1W Metal Film]
R507 VRD-RM2HD1R0JYAAR[1 1/2W Carbon]
R513 VRD-RM2HD333JYAAR[33K 1/2W Carbon]
R514 VRD-RM2HD682JYAAR[6.8K 1/2W Carbon]
R520 VRS-CY1JF103JYAAR[10K 1/16W Metal Oxide]
R523 VRD-RA2BE103JYAAR[10K 1/8W Carbon]
R524 VRD-RA2BE103JYAAR[10K 1/8W Carbon]
R525 VRD-RA2BE122JYAAR[1.2K 1/8W Carbon]
R601 VRD-RM2HD270JYAAR[27 1/2W Carbon]
R602 VRD-RA2BE393JYAAR[39K 1/8W Carbon]
R603 VRD-RA2BE393JYAAR[39K 1/8W Carbon]
R604 VRD-RA2BE473JYAAR[47K 1/8W Carbon]
R605 VRD-RM2HD104JYAAR[100K 1/2W Carbon]
R606 VRN-RL3LBR22J+ADR[22 3W Metal Oxide]
RDA301 PRDARA171WJFWACR[Heat Sink for IC301]
RDA501 PRDARA120WJFWADR[Heat Sink for IC501]
RDA601 PRDARA167WJFWADR[Heat Sink for IC601]
RDA602 PRDARA361WJFWR[Heat Sink for Q602]
RDA701 PRDARA119WJFWAFR[Heat Sink for IC701]