Onida 21BLACK FGL (FTG) User manual

3G
ONIDA
SERVICE MANUAL
COLOUR TELEVISION
14XS / 20XS / 21IQ
14TVE / 20TVE / 21TVE
21BLACK FGL (FTG)
BASIC CHASSIS
3G(UE-DLX)
CONTENTS
• FEATURES
• ADJUSTMENT MANUAL
• STANDARD CIRCUIT DIAGRAM
COPYRIGHT OCT’2003 MIRC ELECTRONICS LTD., MUMBAI.
1

• Type : Colour Television Receiver
• Receiving System : PAL - BG or
PAL - BG/I or
PAL - BG/H, SECAM - BG/DK/K1
NTSC Playback (IN AV MODE)
• Channel Coverage : VHF (Low) : Channel 2 to 4
VHF (High) : Channel 5 to 12
UHF : Channel 21 to 69
CATV (Middle): X-Z+2 S1-S10
CATV (Super) : S11-S20
CATV (Hyper) : S21-S41
• Aerial Input Impedance : 75 ohms unbalanced
• Power input
Rated Voltage : 230V AC, 50/60 Hz
• A/V Terminal connections
Line Input – Video : 1 Vp-p, 75 ohms (RCA Pin Jack)
– Audio : 500 mV rms (-4dBs) High
impedance RCA Pin Jack
Line Output – Video : 1 Vp-p, 75 ohms (RCA Pin Jack)
– Audio : 500 mV rms (-4 dBs) High
impedance RCA Pin Jack
14TVE 14XS 14 Profile 20TVE 20XS 21TVE 20 Profile 21IQ 21 Profile 21FGL
•Power Consumption 70 W 65W 70W 80 W 80W 90 W 85 W 90W 90 W 95 W
• Picture Tube 14” 14” 14” 20” 20” 21” 20” 21” 21” 21”
(36 cm) (36 cm) (36 cm) (51 cm) (51 cm) (53 cm) (51 cm) (53 cm) (53cm) (53cm)
• Audio output
W PMPO 120 60 120 200 100 200 200 120 200 200
• Dimensions
Width (mm) 390 365 373 547 506 553 504 553 632 596
Height (mm) 322 365 367 444 469 458 469 458 460 465
Depth (mm) 376 405 385 470 470 477 467 477 477 481
• Weight (Approx.) 11 kg 10kg 10kg 20 kg 19kg 23 kg 19 kg 23kg 23 kg 26 kg
• Accessories : Remote control,
AA size Dry cell battery x 2 Units
Design & specifications subject to change without notice
S
PECIFICATIONS
1-A

FEATURES:
14XS –
• 250 PROGRAMS
• 60W PMPO
• DIGINET
• HALF MUTE
• BLACK STRETCH
• CHILD SAFE
• DIGITAL CLOCK
• ZAP
• MUSIC MODE
• GAMES
• MONO 2 SPK
20XS –
• 250 PROGRAMS
• 100W PMPO
• DIGINET
• HALF MUTE
• BLACK STRETCH
• CHILD SAFE
• DIGITAL CLOCK
• ZAP
• MUSIC MODE
• GAMES
• MONO 2 SPK
21IQ –
• 250 PROGRAMS
• 120W PMPO
• DIGINET
• HALF MUTE
• BLACK STRETCH
• CHILD SAFE
• DIGITAL CLOCK
• ZAP
• MUSIC MODE
• GAMES
• MONO 2 SPK
2

14TVE –
• 250 PROGRAMS
• CHILD SAFE
• ZAP
• AUDIO STATUS MEMORY
• 120 W PMPO
• CHANNEL LOCK
• MUSIC MODE
• DIGITAL EYE
• BASS / TREBLE / BALANCE
• GAMES
• STEREO PLAYBACK
20TVE –
• 250 PROGRAMS
• CHILD SAFE
• ZAP
• AUDIO STATUS MEMORY
• 200 W PMPO
• CHANNEL LOCK
• MUSIC MODE
• DIGITAL EYE
• BASS / TREBLE / BALANCE
• GAMES
• STEREO PLAYBACK
21TVE –
• 250 PROGRAMS
• CHILD SAFE
• ZAP
• AUDIO STATUS MEMORY
• 200 W PMPO
• CHANNEL LOCK
• MUSIC MODE
• DIGITAL EYE
• BASS / TREBLE / BALANCE
• GAMES
• STEREO PLAYBACK
3

4
21BLACK FGL (FTG) –
• FLAT SCREEN
• 250 PROGRAMS
• CHILD SAFE
• ZAP
• AUDIO STATUS MEMORY
• 200 W PMPO
• DIGINET
• CHANNEL LOCK
• MUSIC MODE
• DIGITAL EYE
• BASS / TREBLE / BALANCE
• GAMES
• DIGITAL CLOCK

ADJUSTMENT MANUAL
3G (UE-DLX) CHASSIS
NO. MODEL NAME
1.
14XS, 14TVE
2.
20XS, 20TVE
3.
21IQ, 21TVE
4.
21FLAT3G
NOTE :
A) Digits specified for the various parameters (not specified as FIX)
are closer to the values to be adjusted. The final adjustment
should be as per the procedure specified.
B) Digits mentioned in the Service Menu should not be changed
wherever ‘Fix’ is mentioned, elsewhere they are subject to
change as per procedure specified.
DATE APPROVED BY CHECKED BY ISSUED
5

ADJUSTMENT MANUAL
3G (UE-DLX) CHASSIS
INDEX
.No. Particulars
1 Service Menu
2 Center Values/VSM Presets/SSM PRESETS
3 VCO Adjustment
4 Low light Adjustment
5 High light Adjustment
6 Bright Adjustment
7 Contrast Adjustment
8 Colour Adjustment (PAL)
9 Tint Adjustment(NTSC)
10 Focus Adjustment
11 Vertical Size Adj.
12 Vertical Centering
13 Horizontal Centering
14 RFAGC Adjustment
15 High Voltage Confirmation
6

A d j u s t m e n t M a n u a l
S e r v i c e m e n u Adj.Process
3G(UE-DLX) M o d e l ALL
[1] The following display comes on the screen by pressing DISPLAY key
and VSM key at the same time.
FACTORY
SERVICE MODE
Then, press CURSOR UP OR DOWN key to be in Service menu.
To select Service Menu parameters use CURSOR UP OR DOWN
key and to adjust these parameters use CURSOR LEFT OR
RIGHT key
H-LINE
1) To get H-line press VSM and DISPLAY Simultaneously.
2) Press CURSOR UP KEY to get R CUTOFF.
3) Press '0' to get H-line.
4) To come out of H-line again press '0'.
VSM PRESET
There are FOUR VSM
PRESETS.(CARTOON,FILM/POP,NEWS,)
For the setting of individual VSM PRESETS
1. Press VSM and DISPLAY at the same time.
2. Press CURSOR DOWN key to get the Setting for the
VSM PRESET.
3. Press CURSOR DOWN key for the selection of each
parameter.
4. Use CURSOR LEFT/RIGHT key for their setting as per
the table given below.
5. Press VSM Key for selection of VSM PRESETS.
7

VSM BRI CONT COLR SHRP TINT
CARTOON 25 25 32 32 32
NEWS 32 60 39 48 32
SPORTS 25 50 30 42 32
FILM/POP 48 60 52 63 32
DIGITAL
EYE
STAGE1 15 25 26 32 32
STAGE2 17 35 32 32 32
STAGE3 20 40 32 32 32
STAGE4 25 50 32 32 32
STAGE5 32 55 32 32 32
SSM BASS TREBBLE
CARTOON 08 08
NEWS 12 08
SPORTS 12 12
FILM/POP 16 16
8

A d j u s t m e n t M a n u a l
S e r v i c e m e n u Adj.Process
3G(UE-DLX) M o d e l ALL
PARAMETER CENTER VALUE’S
R CUTOFF 75 *
G CUTOFF 75 *
B CUTOFF 75 *
R DRIVE 43 *
B DRIVE 43 *
SUB CONTRAST 17 *
SUB COLOR 0A *
SUB BASS 10(FIX)
SUB TREBLE 10(FIX)
SUB BRIGHT 70 *
SUB BASS 10FIX
SUB TREBLE 10 FIX
SUB TINT 15 *
VERTICAL SIZE 33 *
ZOOM SIZE 55 *
VERTICAL POS 02 *
H- CENTER 50 07 *
H- CENTER 60 08 *
RF AGC 56 *
VCO 7F Fix
D TRAP 00 Fix
F TRAP 00 Fix
HR 03 *
CV 09 *
DT PAL 07 Fix
DT SECAM 05 Fix
DT NTSC 05 Fix
DT BW 07 Fix
AV TINT 0F Fix
AV SHARPNESS 0F Fix
B,G 01 Fix
I 01 Fix
D,K,K1 01 Fix
SECAM 01 Fix
N3.58 01 Fix
VIDEO GAIN 05 Fix
BGPSW 01 Fix (00 FOR SECAM)
BPF 01Fix
STEREO 01FIX
POWER BASS 00 FIX
SURROUND 00FIX
SOFT TONE 10 FIX
GLOWING TONE 10 FIX
SOUND CURVE 00 FIX
DIGITAL EYE 01 FIX
SPRITE 01 FIX
WHITEBACK 00 Fix
9

A d j u s t m e n t M a n u a l I2C
Item VCO Adjustment Adj.Process 2AL
3G(UE-DLX) M o d e l ALL
Measuring
Equipment
* SG (Signal Generator)
* Digital multimeter
* CRO
Preparation
before Adj.
Adjustment
Procedure 1) Switch ON the TV Set.
2) Select colour bar pattern {carrier frequency
of 38.9MHz} from pattern generator.
3) Connect this signal to the input of Saw
Filter(after disconnecting IF output of
Tuner)
4) Connect Digital Multimeter to AFC
out(pin no. 2 of VCD IC52771, IC201)
5) Adjust VCO coil in such a way that
Digital Multimeter shows 4V(sudden
change in voltage reading from 8V)
This voltage should be adjusted whenever
there is sudden fall from 8V to 1V as
shown
NOTE
* use non-metallic adjustment tool (eg~ceramic) for adjustment.
* Correct AFT voltage alignment can be confirmed by monitoring
proper waveform at pin no. 38 of VCDIC 52771 IC no. 201./CRO
can be also connected to Video OUT terminal.
8V
10

A d j u s t m e n t M a n u a l I2C
Item Low light Adjustment Adj.Process 2AL
3G(UE-DLX) M o d e l ALL
Measuring
Equipment
Preparation
before Adj.
* Warm up the receiver for more than 30 minutes.
Adjustment 1) Receive the monoscope pattern signal .
Procedure 2) Select either R CUTOFF , G CUTOFF
B CUTOFF in the Service menu.
4) Push 0 key on any mode to make a
horizontal line.
5) Turn the screen knob (the Bottom of FBT)
gradually from fully left to the right &
search for the first appearing colour.
6) Adjust two colours except for the first
colour which appears by the adjustment 5)
to the white colour with the following 1~ 6
key.
7) Turn the screen knob so that a horizontal
line appear slightly.
8) Change the normal screen by pushing 0
key again.
9) Receive the pedestal pattern signal
10) Readjust the Colour of the pattern to white
colour by varying 1~ 6
11

A d j u s t m e n t M a n u a l I2C
Item High light Adjustment Adj.Process 2AL
3G(UE-DLX) M o d e l ALL
Measuring
Equipment
* Colour Analyzer
Preparation
before Adj.
* Warm up the receiver for more than 30 minutes.
* The low light adjustment should be done in advance.
Adjustment 1) Receive the monoscope pattern signal .
Procedure 2) Select R-DRIVE &/OR BDRIVE in the
Service Menu.
3) Adjust R-DRIVE & B-DRIVE so that the
white balance is at the directed value
(Adjustment point “A”).
4) Check if the tracking of white balance
from Low light till High light is good.
Model Adjustment point A
Colour temperature X Y
ALL 9300° K 0.290 0.291
5) Receive the pedestal pattern signal .
6) Check if the white balance of low light is
good. If the white balance of the low light
is not good, adjust the low light again.
7) Receive the monoscope pattern signal.
Repeat step (4) onwards till perfect white
balance is achieved in low light and high
light paterns.
12

A d j u s t m e n t M a n u a l I2C
Item Bright Adjustment Adj.Process 2AL
3G(UE-DLX) M o d e l ALL
Measuring
Equipment
Preparation
before Adj.
* Warm up the receiver for more than 30 minutes.
* The low light & high light adjustment should be done in
advance.
Adjustment 1) Receive the Black pedestal pattern signal .
Procedure 2) Select Sub Bright in the Service Menu.
3) Adjust the Sub Bright so that the point of
below table gradation value does not shine.
Model Adj.Point
14/20/21" 0%
Note :
While entering in Service Menu ,by default it takes the values of
VSM cartoon, hence the above parameter is adjusted with respect to
cartoon condition.
13

A d j u s t m e n t M a n u a l I2C
Item Contrast Adjustment Adj.Process 2AL
3G(UE-DLX) M o d e l ALL
Measuring
Equipment
* Oscilloscope
Preparation
before Adj.
* Warm up the receiver for more than 30 minutes.
Adjustment 1) Receive the Black pedestal pattern signal.
Procedure 2) Connect the probe of the oscillocsope to.
green catthode.
3) Select Sub Contrast in the Service
Menu.
4) Adjust it so that the value between the dot
line & white peak of the signal waveform
as mentioned below to be the directed
voltage as mentioned in the Table below.
Model Adj.Point
14" 70V
20/21” 80V
Note :
While entering in Service Menu ,by default it takes the values of
VSM-cartoon,hence the above parameter is adjusted with respect to
cartoon condition.
14

A d j u s t m e n t M a n u a l I2C
Item Colour Adjustment (PAL) Adj.Process 2AL
3G(UE-DLX) M o d e l ALL
Measuring
Equipment
* Oscilloscope
Preparation
before Adj.
* Warm up the receiver for more than 30 minutes.
* Adjust the PICTURE MODE to [DYNAMIC] mode.
Adjustment 1) Receive the PAL colour bar pattern signal .
2) Connect the probe of the oscilloscope to
green cathode.
3) Select Sub color in the Service Menu.
4) Adjust the Sub color so that the value
between the white peak & blue as per
below table.
Model Adj.Point
14/20/21” +3V
Note: While entering in the SERVICE MENU by default it takes the
value of VSM cartoon, hence the above parameter is adjusted with
respect to cartoon condition.
15

A d j u s t m e n t M a n u a l I2C
Item Colour Tint Adjustment
(NTSC3.58,NTSC4.43)
Adj.Process 2AL
3G(UE-DLX) M o d e l ALL
Measuring
Equipment
* Oscilloscope
Preparation
before Adj.
* Warm up the receiver for more than 30 minutes.
* Adjust the PICTURE MODE to [DYNAMIC] mode.
Adjustment 1) Connect the NTSC Video Colour bar
pattern signal
Procedure (White 75%) to Video input Terminal.
2) Connect the probe of the oscilloscope to
BLUE CATHODE.
3) Adjust the Sub Tint so that the value
between the white peak and Magenta is
as per the table shown below.
Model Adj.point
(TINT)
14/20/21” +5V
Note: While entering in the SERVICE MENU by default it takes the
value of VSM cartoon ,hence the above parameter is adjusted with
respect to cartoon condition.
16

A d j u s t m e n t M a n u a l I2C
Item Focus Adjustment Adj.Process 2AL
3G(UE-DLX) M o d e l ALL
Measuring
Equipment
Preparation
before Adj.
* Adjustment of Brightness & Contrast should be done in
advance.
Adjustment 1) Receive the monoscope pattern signal .
Procedure Turn the focus control knob clockwise and
anticlockwise (on FBT) watching the
screen & adjust it so as to get good, clear
and Focused picture.
17

A d j u s t m e n t M a n u a l
Item Vertical Size Adj. Adj.Process 2AL
3G(UE-DLX) M o d e l ALL
Measuring
Equipment
Preparation
before Adj.
Adjustment 1) Receive the monoscope pattern signal.
Procedure 2) Select Vertical Size in the Service
menu.
Adjust Vertical Size by varying cursor
left/right keys to get 92% of picture size.
3) When both up & down lines are located
within the 88% ~ 96% range of the
standard lines on the monoscope pattern
signal, it is OK.
18

A d j u s t m e n t M a n u a l I2C
Item Vertical Centering Adj.Process 2AL
3G(UE-DLX) M o d e l ALL
Measuring
Equipment
Preparation
before Adj.
Adjustment 1) Receive the monoscope pattern signal.
Procedure 2) Select Vertical Pos. option in the
Service menu Adjust Vertical Pos using
cursor left/right in such a way that the
centre of monoscope to be the nearest
position of CRT centre line.
19