Page 1 Date 151 th Jul 2003 Index C of 10 Pages Name ITC008 product development Singapore 1.1 RF AGC Alignment ( Europe) ( a ) Apply RF signal of 210.25MHz (BG CH 10) modulated with color bar at 3mVrms to Tuner NH001 RF input. ( b ) Tune to CH10 ( c ) Go to service mode & set RF AGC -CHIP control = 00 (max). ( d ) Monitor 38.9MHz IF frequency response at NH001 pin11 with spectrum analyser by using high impedance probe or equivalent. e) Increase RF AGC -CHIP control until IF frequency response 8 + 1/ - 2 dB down from maximum . 1.2 IF demodulator Off-set Alignment ( Europe) Go to service mode & set OIF -CHIP control = 32 .
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Page 1 Date 151th Jul 2003
Index C
of 10 Pages Name ITC008
product development Singapore
1.1 RF AGC Alignment ( Europe)
( a ) Apply RF signal of 210.25MHz (BG CH 10) modulated with color bar at 3mVrms to Tuner
NH001 RF input.
( b ) Tune to CH10
( c ) Go to service mode & set RF AGC -CHIP control = 00 (max).
( d ) Monitor 38.9MHz IF frequency response at NH001 pin11 with spectrum analyser by using
high impedance probe or equivalent.
e) Increase RF AGC -CHIP control until IF frequency response 8 + 1/ - 2 dB down from maximum .
1.2 IF demodulator Off-set Alignment ( Europe) Go to service mode & set OIF -CHIP control = 32 .
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Geometry
Special connector BR002 gives direct access to the I2C-bus and video-input in AV-mode for production purpose.
4:3 standard mode, overscan:
V=107% (line #32 to #301 visible = 270 lines) H=107% (48.6μsec of 52 us visible)
0,8MHz
0% 20%
1,8MHz
100%
3,8MHz
2,8MHz
40% 60% 80%
4,8MHz
1.3 Alignment of vertical slope
• This alignment can be done on test jig without final tube • Apply Full White pattern (625 lines/50Hz) at chassis test-jig, monitor R output and trigger the
scope by TV line 168. • Set AKB = 1 (enable Auto Black Current)
Set SBL = 1 (to blank the bottom half video) Set VS = 0
Remark: For the 21"-XF-4/3, 25"/28"-MP-4/3 and 29”XF picture tubes the preferred alignment
procedure for V-Slope alignment has to be used!
1.4 Preferred alignment procedure for V-Slope alignment: • Monitor R output (IV001 pin 51) at line 168. The level should be high. • Increase VS until the blanking happens at line 168. • Save VS and set SBL and AKB back to 0.
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R output corresponding to VS=18, 20 and 22(decimal). Input is Full White with horizontal centre line shown that is triggered at line 168. 1.5 Optional alignment for V-Slope At chassis test-jig, monitor the voltage at item pos IV001 pin 26. Adjust VS value through the external computer until the voltage at pin 26 is at 2.9Vpp (a.c.) +/- 5% as shown in the figure below. The probe to be used is 10Mohm probe. Save VS and set SBL and AKB back to 0.
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a) This alignment must be done on chassis with final tube.
b) Make sure that UB1 voltage level according to page 5 table for respective tube.
c) Use a 50/60Hz test pattern with markings for correct horizontal and vertical overscan.
d) Adjust horizontal centring (HSH) via I2C bus for optimum overscan symmetry
e) Adjust vertical centring (VSH) via I2C bus for optimum overscan symmetry
f) Adjust picture height (VA) via I2C bus for optimum overscan.
g) Adjust vertical linearity (SC) for minimum error via I2C bus.
h) If necessary repeat VSH and VA alignment to 7% overscan and best overscan symmetry
Default values for s-correction
Picture tube Default value S-correction dec
19V THAI CRT 25
19V CHUNGHWA 25 21” OT 17 20V TF-orion 24 20V TF/21” XF LGS 25 21”XF-Toshiba 24 21”XF-TTD GEN II 28 27V 1R 35 27V VHP 25 25” XF 25 28’’MP TTD 24 27V TF /29”XFSamsung 28 27V TF /29” XF TTD GEN II 31 33” MP TTD 24 32V VHP 25 36V VHP 25 32V TF Toshiba 31 32V TF / 34” XF TTD 25 36V TF Toshiba 28 24” SF 16/9 22 28” SF 16/9 22 28” XF 16/9 GEN II 22 32’” XF 16/9 GEN II 22 Note In case of misalignment/out of range of VS and VA causes the protection signal from E/W module activated and shut down the set, connector BF001 on main board or BL101 on E/W board can be temporary disconnected to start up and realign VS and VA to proper setting. Connector is reinserted to perform E/W alignment.
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2. Part IV – Video (EU) 2.1 ALIGNMENTS OF ITC008 (EU) 2.1.1 Alignments on tube (EU)
BR002
focus
G2/cutoff
For cut-off - and focus - alignment the chassis must be matched to the finally used tube.
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2.1.1.1 Alignment of G2 voltage:
With the existing continuous cathode calibration loop, one has to take care, that the right pulse is used for quasi-cut-off measurement. With this concept two different measurement pulses are inserted field alternating. For correct alignment the pulse, which corresponds to the low current insertion, has to be measured. At the cathodes this is the pulse with the higher level:
Procedure: Insert a black level test pattern via RF or AV input. Measure with a 100:1 probe at the R, G and B pins of the CRT socket. The time base of the oscilloscope should be 2ms/div, set Y-scale to 20V/div DC-coupled and use frame triggering. Adjust the cut off pulse of the highest cathode with the SCREEN potentiometer on the focus block to:
Tube size Quasi cut off 19V THAI CRT 125V ± 3V 19V CHUNGHWA 21" OT 20V TF-orion 20V TF/21" XF LGS 21"XF-Toshiba 21"XF-TTD GEN II 27V 1R 27V VHP 25" XF 28''MP TTD 27V TF /29"XFSamsung 27V TF /29" XF TTD GEN II 33" MP TTD 140V ± 3V 32V VHP 36V VHP 32V TF Toshiba 32V TF / 34" XF TTD 36V TF 24" SF 16/9 28" SF 16/9 28" XF 16/9 32'" XF 16/9
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Note: Signal is triggered at start of vertical scan, the position of the cut off pulse is dependent on the stage selected. Alternative Method Insert a black level pattern via RF or AV input.. Select VG2 mode from service mode. Align VG2 to get 03. 2.1.2 Video (EU) 2.1.2.1 Colour Temperature Alignment (EU)
It is necessary to calibrate the TV Colour Analyser periodically (light unit = cd/m2) Tune either to a spot test pattern with adjustable amplitude or to a test pattern with three spots in the middle of a black screen. The middle spot corresponds to 100IRE, one to 25IRE and one to 50IRE:
adjustable amplitude
100IRE
50IRE 25IRE
Apply external degaussing. Set Contrast 50%and Brightness at 50%; set Colour Saturation to 50%. Attached TV Colour Analyser sensor onto the centre (for spot with adjustable amplitude) or use a colour analyser with three probes and set them onto the three pads of the TV screen. Align RF mode, RGB Mode and DVD mode (if available) separately. For DVD mode, use the DVD alignment DISC or DVD building pattern No.5 . First method with adjustable spot test pattern and one analyser probe:
First provide the test pattern in PAL B/G. Start with the alignment of the 50IRE by adjusting WPR and WPG registers. Then adjust Input to 25IRE and align with BLOR and BLOG registers and realign the 50IRE level. When both probes show results within the tolerances to get x = 0.288 ± 0.01 (0.278...0.298) y = 0.301 ± 0.01 (0.291...0.311) Do the iteration until the alignment is within the spec.
Repeat this procedure for SECAM L
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Second method with three-spots-test-pattern and three analyser probes: First provide the test pattern in PAL B/G. Do an iterative measurement between the probe on the 50IRE-pad and the one on the 25IRE-pad. The third pad is necessary for Peak White Alignment in the following chapter. Start with the alignment of the 50IRE pad by adjusting WPR and WPG registers. Then align the 25IRE pad with BLOR and BLOG registers and realign the 50IRE pad. When both probes show results within the tolerances to get x = 0.288 ± 0.01 (0.278...0.298) y = 0.301 ± 0.01 (0.291...0.311) Do the iteration until the alignment is within the spec. Repeat this procedure for SECAM L
2.1.2.2 Brightness Preset
- Apply a ± 4% test pattern at RF input. - RF-standard selection: Use standard BG for TVs without L’. - Use standard L for TVs with L’ - Adjust with Sub Brightness (OS_B) to correct black level (+4% bar just visible).
2.1.2.3 Peak White alignment
It is necessary to calibrate the TV Colour Analyser periodically (light unit = cd/m2). Tune to a Peak White pattern. Separate alignment has to be done for PAL BG and SECAM L system for Europe Chassis. Attach TV Colour Analyser sensor onto the centre of the Peak White pattern. Set Brightness and Contrast at 50%, Colour Saturation to 50% Increase or decrease the three WPA red, green and blue registers in parallel to achieve a peak white reading as listed in following table:
In Field Service Mode use PKWP (PAL) respectively PKWS (SECAM) for alignment. If Peak-White cannot be attained by increasing/decreasing WPA-registers (or PWP/PWS in Field Service Mode), then increase/decrease CDL-register.
Align RF mode, Component mode (if available) and DVD mode (if available) separately.
Repeat this procedure for SECAM L..
For DVD mode, use the DVD alignment DISC
Or use build in Test Pattern from DVD by the following step. a. From TV service mode select DVD factory mode by pressing DVD local key.
b. Press RCU Key Number 2(Peak white Pattern). c. Then activate service menu and do alignment.
2.1.2.4 Peak White Limiting When using there is an additional register under UOC-subaddress 04H, which is called “Peak White Limiting”. This function must not be aligned, but can be modified in the Field Service Mode (SOC). The actual default value is 2FH.
For 29”XF Samsung the default value is 2D hex. For 21”XF TTD the default value is 2D hex.
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3. Appendix B - Service Menu (EU).
To enter service mode:
1. Go to standby and switch off the set. 2. Press Magenta key on the Remote Control Unit 3. Press Power Switch To turn on the set..
To exit from service mode, press EXIT. Current parameter available in ITC008 EU software. Description parameters in ITC008 EU service menu... Format:display name (range:decimal) ...description Init SOC 0-63 PeakWhiteLimiting OIF 0-63 Off-set IF Demodulator HSH 0-63 Horizontal Shift Alignment VS 0-63 Vertical Shift Alignment VA 0-63 Vertical Amplitude Alignment SC 0-63 S-Correction VSH 0-63 Vertical Shift CL 0-63 Cathode Drive Level BLORP 0-63 Black Level offset Red PAL (for SECAM...BLORS) BLOGP 0-63 Black Level offset Green PAL (for SECAM...BLOGS) WPRP 0-63 White point offset Red PAL (for SECAM...WPRS) WPGP 0-63 White point offset Green PAL (for SECAM...WPGS) WPBP 0-63 White point offset Blue PAL (for SECAM...WPBS) PKWP 0-63 stop when any one of
the alignment reach limit)…Peak White Alignment (for SECAM...PKWS)
OS_B 0-15 Sub-Brightness Alignment BKS 0-1 Black Stretch On/Off AGC 0-63 Automatic Gain Control Alignment VG2 0-03 VG2 Screen Alignment Limit 0 - 63 Limit for Volume control Lock On - Off Lock for hotel mode Key On - Off Lock Pr+ and Pr- on the front panel
ITC008First issue 04 / 03
KEYBOARD - CIRCUITS DE COMMANDES - SCHALTBILD BEDIENTEIL - SCHEMADEI CIRCUITI TASTIERA - ESQUEMA DE LOS CIRCUITOS MANDOS
FRONT CONNECTOR BOARD - PRISES EN FACADE ET INTERCONNEXION DUCLAVIER -FRONT ANSCHLUSSPLATTE - PIASTRA CONNESSIONE FRONTALE -PLÁTINA MANDOS FRONTAL
WHITE
RED
YELLOW
DEV?
ITC008
CJ106INF
CJ105INF
BV004B
BV004A
VIDEO V_G
ND
R
LTo B
X004
B (S
CI)
To B
S004
(AU
DIO
MAI
N)
100R0RJ102
6K8RJ101
47K0RJ103
BJ111
RJ10447K0
330PFCJ103
BAV21
DJ121
150RRJ106
150RRJ105
LJ0011UH
ALT
BS001A
V_GND
CINCHBJ110
FCB_GND
JQ10
3
JQ10
1
JQ110
JJ00
2
JQ10
2
R_INR_OUT
L_OUT
RQ104220R0
L_IN
CQ10210UF
CQ10110UF
RQ103220R0
CQ1043N3F
CQ1033N3F
BQ112
220R0RQ106
220R0RQ105
220R
0R
Q10
2
RQ
101
220R
0
BAV21
DJ120
470PFCQ106
470PFCQ105
CJ104330PF
V_GNDV_GND
V_GND V_GND
23
87
54
1
56
43
12
123456
3
2
1
4 5
654321
123456
FCB
PIDN?
PIDN?
PIDN?VSOUTGND
PIDN?
VOL+
VOL-
PR+
PR-
1K5RK104
390RRK103
RK102390R
JK001
RK106220R0
REDGE101
JK002
GND_KB
BR001A
IR
LED_R
SK104
47UFCK102
IR
GK101
SK103
SK102
SK101
KEYB
KEYB
GND_KB GND_KB
GND_KB
GND_KB
GND_KB
GND_KB
LED_GGND_KB
+5V_STBY
+3V3UPTo B
R00
1 (M
AIN
)
1234
4 32 1
4 32 1
132
1234
87654321
KB
COMPONENT SIDE - CÖTE COMPOSANTS - BESTÜCKUNGSSEITE -LATO COMPONENTI - LADO COMPONENTES
SOLDER SIDE - CÔTE SOUDURES - LÖTSEITE - LATO SALDATURE - LADO SOLDADURAS SOLDER SIDE - CÔTE SOUDURES - LÖTSEITE - LATO SALDATURE - LADO SOLDADURAS
COMPONENT SIDE - CÖTE COMPOSANTS - BESTÜCKUNGSSEITE -LATO COMPONENTI - LADO COMPONENTES
ITC008First issue 04/ 03
VIDEO AMPLIFIER BOARD - PLATINE AMPLIFICATEURS VIDEO - VIDEOVERSTÄRKERPLATTE - PIASTRA AMPLIFICATORE VIDEO - PLATINA AMPLIFICADOR VIDEO
2.2Vpp-H
I_CUT
3.5Vpp-H 90Vpp-H
90Vpp-H
98Vpp-H2.2Vpp-H
2.2Vpp-H
!
!
!
!
!
!!
3
2
+VS1
!
13
F1
R G1 G2GB
12
BRG1 2
!
!
!
EHTVH
VG2 VG2
FOCUS
BL002A => BL002 (MAIN SCAN.)
BB00
3
BB00
2
DB0041N4004GP
U_VIDEO
IB001A
I_CU
T
HEATER
BG
CRTGND
10N
F
CB00
1G2
BB00
4
BV002A=>BV002MAIN OS
*BB006SO-CONTROL
BB005CONN-CRTSO
CRTGND
*RB073100R0
*RB033100R0
100R0RB032
RB0041K5
RB051560R0
47NFCB005
IB001TDA6107Q/N2
CRTGND
CRTGNDCRTGNDCRTGND
CRTGND
100R0RB072
560R0RB071RB070
1K0
RB052100R01K0
RB050
RB031560R01K0
RB030
RB01310R0
RB0111K0
560K0RB002
1K5RB001
DB071BAV21
DB070BAV21
DB051BAV21
DB050BAV21
DB031BAV21
DB030BAV21
10UFCB006
47NFCB004 10UF
CB003
CRTG
ND
CRTGND
CRTGND CRTGND
CRTG
ND
CRTGND
CRTGND
R
CRTGND
CRTGND
4
6
8
5
7
9
12
9
8
7
6
5 2
11
10
1
9
54
86
37
21
54321
654321
* Mini
CRT
2.8
2.8
2.8
5.4
185 185
185
116
114
112
COMPONENT SIDE - CÖTE COMPOSANTS - BESTÜCKUNGSSEITE -LATO COMPONENTI - LADO COMPONENTES
SOLDER SIDE - CÔTE SOUDURES - LÖTSEITE - LATO SALDATURE- LADO SOLDADURAS
Part of board connected to mainssupply.Partie du chassis reliée au secteur.Primärseite des Netzteils.Parte dello châssis collegata alla rete.Parte del chasis conectada a la red.
Note :Power Supply primary circuit measurements.- Use only (H) connection point.Attention :Mesure dans la partie primaire de l'alimentation- Utiliser la masse du bloc alimentation (H).Achtung :Bei Messungen im Primärnetzteil- Primärnetzteilmasse verwenden (H).Attenzione :misure nell'alimentatore primario - usare massa alimentazione primario (H).Cuidado :Medida en el bloque de alimentacion- Utilizar la masa del bloque de alimentacion (H).
Use isolating mains transformerUtiliser un transformateur isolateurdu secteurEinen Trenntrafo verwendenUtilizar un transformador aislador de redUtilizzare un transformatore per isolarvi dalla rete
!
Indicates critical safety components, and identical components should be used for replacement. Only then can the operational safety be garanteed. !
!
!Wenn Sicherheitsteile (mit dem Symbol gekennzeichnet) durch nicht normgerechte Teile ersetzt werden, erlischt die Haftung des Herstellers.
Le remplacement des éléments de sécurité (repérés avec le symbole par des composants non homologués selon la Norme CEI 65 entraine la non-conformité de l'appareil. Dans ce cas, la responsabilité du fabricant n'est plus engagée.
Part of board connected to mainssupply.Partie du chassis reliée au secteur.Primärseite des Netzteils.Parte dello châssis collegata alla rete.Parte del chasis conectada a la red.
Note :Power Supply primary circuit measurements.- Use only (H) connection point.Attention :Mesure dans la partie primaire de l'alimentation- Utiliser la masse du bloc alimentation (H).Achtung :Bei Messungen im Primärnetzteil- Primärnetzteilmasse verwenden (H).Attenzione :misure nell'alimentatore primario - usare massa alimentazione primario (H).Cuidado :Medida en el bloque de alimentacion- Utilizar la masa del bloque de alimentacion (H).
Use isolating mains transformerUtiliser un transformateur isolateurdu secteurEinen Trenntrafo verwendenUtilizar un transformador aislador de redUtilizzare un transformatore per isolarvi dalla rete
!
Indicates critical safety components, and identical components should be used for replacement. Only then can the operational safety be garanteed. !
!
!Wenn Sicherheitsteile (mit dem Symbol gekennzeichnet) durch nicht normgerechte Teile ersetzt werden, erlischt die Haftung des Herstellers.
Le remplacement des éléments de sécurité (repérés avec le symbole par des composants non homologués selon la Norme CEI 65 entraine la non-conformité de l'appareil. Dans ce cas, la responsabilité du fabricant n'est plus engagée.