Sharp 21F-PA330I Service Manual

Page 1
SERVICE MANUAL
COLOUR TALEVISION
Chassis No. GA-4
MODEL
In the interests of user-safety (Required by safety regulaton in some countries) the set should be restored to its original condition and only part identical to those specified should be used.
PAL B/G System 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 Noise Mute Front AV IN & Rear AV IN / OUT Terminals Front Headphone Jack Aperture Control Circuit
FEATURE
Auto Fine Tuning Colour Comp Filter (NTSC Only) High Contrast Picture Hotel Mode 2 Language OSD (English / Thai ) White Temperature Select Component In Surround Sound Effect <With Bass / Treble / Balance> AV Stereo
SPECIFICATIONS...................................................
IMPORTANT SERVICE NOTES..............................
ADJUSTMENT PRECAUTIONS..............................
TROUBLE SHOOTING FLOWCHART....................
SOLID STATE DEVICE BASE DIAGRAM...............
WAVEFROMS.........................................................
CHASSIS LAYOUT..................................................
BLOCK DIAGRAMS
MAIN UNIT.......................................................
CRT UNIT.........................................................
HEADPHONE UNIT.........................................
S-CONTROL UNIT...........................................
DESCRIPTION OF SCHEMATIC DIAGRAM.........
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g g g g g g
g g g g g
g g g
g
n
n n
g g g
g
Page
2 2
3 13 15 16 17
18 19 19 20 21
SCHEMATIC DIAGRAM
MAIN UNIT............................................
CRT UNIT..............................................
HEADPHONE UNIT...............................
S-CONTROL UNIT................................
PRITED WIRING BOAD ASSEMBLIES.......
REPLACEMENT PARTS LIST
ELECTRICAL PARTS............................
MISCELLANEOUS PARTS...................
ACCESSORIES PARTS.......................
CABINET PARTS..................................
PACKING PARTS..................................
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n
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g
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22 23 23 24 25
29 33 33 33 34
CONTENTS
WARNING
The chassis in this receive is partially hot. Use an isolation transformer between the line cord plug and power receptable, when servicing this chissis. To prevent eletriv shock, do not remove cover. No user­servieable parts inside. Refer servicing to qualified service personnel.
SHARP MENUFACTURING (THAILAND) CO.,LTD.
21F-PA330I
Page 2
IMPORTANT SERVICE NOTES
Maintenance and repairing 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 change 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).
2).
3).
4).
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).
2).
3).
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 proteative devices such as non - mrtallic control knobs,insulating fishpapers, cabinet backs, adjustment and compartment covers or shields, isolation resistor - capacitty networks, mechanical insulators etc.
Convergence..........................................................................................................Self Convergence System
Focus.....................................................................................................Electrostatic Focus High Bi-Potential
Sweep Deflection...............................................................................................................................Magnetic
Intermediate Frequencies
Picture IF Carrier..............................................................................................................................38.9 MHz
Sound IF Carrier Frequency
6.5 MHz...........................................................................................................................................32.4 MHz
6.0 MHz...........................................................................................................................................32.9 MHz
5.5 MHz...........................................................................................................................................33.4 MHz
4.5 MHz...........................................................................................................................................34.4 MHz
Colour Sub - Carrier Frequency......................................................................................................34.47 MHz
Power Input.................................................................................................................110 ~ 240V AC 50/60 Hz
Power Consumption..................................................................................................................................97 W
Audio Power Output Rating.......................................................................................................4 W(RMS) x 2
Speaker
Size..................................................................................................................................... 12 x 6 cm (2 pcs)
Voice Coil Impedance...........................................................................................................16 ohm at 400 Hz
Aerial Input Impedance
VHF/UHF.........................................................................................................................75 ohms Unbalanced
Receiving System..................................................................................................................................PAL B/G
Tuner Ranges
VHF - Channels..............................................................................................................................E2 thru E12
UHF - Channels............................................................................................................................E21 thru E69
CATV - Channels............................................................................................................................S1 thru S20
Receiving Frequency...............................................................................................48.5 MHz thru 863.25 MHz
Dimensions (approx.) .............................................................................................................Width: 618.0 mm
Height: 473.0 mm Depth: 482.0 mm Weight(approx): 23.0 kg
Cabinet material.................................................................................................................................All Plastics
Specifications are subject to change without prior notice.
SPECIFICATIONS
2-1 2-2
2
Picture tube in this receiver employs integral implosion protection. Replace with tube of the same type number for continued safety. Do not lift picture tube by the neck. Handle the picture tube only when wearing shatterproof goggles and after discharging the high voltage completely.
When repairing the circuit, be sure not to increase the high voltage to more than
30.0kV(at beam 0 µA) for the set. To keep the set in the in a normal opeartion, be sure to make it function on 27.0kV
1.5kV (at beam 1,000 µA) in the case of the set.The set has been factory ­Adjusted to the above mentioned high voltage. *If there is a possibililty that the high voltage fluctuates as a result of the repairs, never forget to check for such high voltage after the work. Do not substitute a picture tube with unauthorizerd types and/or brands which may cause excess X - ray radiation.
+
_
Page 3
ADJUSTMENT PRECAUTIONS
This model’s setting in two different ways: through the I2C bus control and in the convention analog manner. The adjustments via the I2C bus control include preset - only items and variable data.
CAUTION: Make sore TV set in “Normal condition” before swich to Service Mode for adjustment.
1. Setting the service mode by the microprocessor.
2. Factory Presetting.
3. For reference please check with memory map RH - IXB225WJZZ (See attachment)
Note:
Setting the service mode by the microprocessor to set the TV set to SERVICE mode position, and the microprocessor is in input mode. (Adjustment trough the I2C bus control). 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. Press the CH DOWN/UP key on the remove controller to select the item in Adjustment mode or Option mode. 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. In check mode the data cannot be changes. Press the SERVICE key agian, it will swich to the NORMAL mode position, and the microprocessor is out of the SERVICE mode.
(1).
(2).
(3).
(4).
(5). (6).
Power ON the set, press the SERVICE key on the remote controller, then press both CH UP and VOL UP button on the set simultaniously for 5 secs. Intial values are automatically preset, only when a new EPROM is used. The inital data are preset as listed in page 5-1 to 7-1. Make sure the data need modification or not (Initial data) Precaution: If haven’t done this initialization, it may possibly generate excessive Beam cerrent.
(1).
(2). (3).
Presetting SERVICE mode (MANUAL)
Short JA301 & JA410, then TV set will switch to the service mode position, and the microprocessor is in input mode. (Adjustment through the I2C bus control) 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. Press the CH UP/DOWN key on the remote controller select the item in Adjustment mode, Setting mode and Option mode. Using the VOLUME UP/DOWN key on the remote controller, the data can be modified. Please wait approximately 200 msec for data storge in the EEPROM before select to another mode. In check mode the data can not be changed. Disable the short of JA301 & JA410, it will switch to the normal mode (OFF) position, and the microprocessor is out of the sevice mode.
(1).
(2).
(3).
(4).
(5). (6).
ADJUSTMENT ITEM
**Below are the adjustment items the should be done, PLS FOLLOW THE PROCEDURE. Otherwise some adjustment items will not be accurate.
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45
BUS SETUP
OPTION SET UP
H - VCO VIF - VCO S - TRAP fo RF - AGC PURITY ADJ CONVERGENCE ADJ FOCUS ADJ V - SHIFT (50 Hz) H - SHIFT (50 Hz) V - SIZE (50 Hz) SCREEN WHITE BALANCE SUB - BRIGHTNESS SUB - CONTRAST BEAM CURRENT CHECK SUB - TINT SUB - COLOR BEAM PROTECTOR CHECK HV PROTECTOR CHECK OTHER PROTECTOR CHECK AV OUT CHECK AV IN CHECK COMPONENT IN CHECK CONTRAST CONTROL CHECK COLOR CONTROL CHECK BRIGHTNESS CONTROL CHECK TINT CONTROL CHECK SHARPNESS CONTROL CHECK CH DISPLAY COLOR CHECK NORMAL DISPLAY CHECK WHITE TEMP CONTROL CHECK COLOR SYSTEM CHECK SURROUND CHECK TREBLE CHECK BASS CHECK BALANCE CHECK SOUND SYSTEM CHECK NOISE MUTE CHECK OSD LANGUAGE QUANTITY CHECK HEAD PHONE CHECK BILINGUAL FUNCTION CHECK SHOCK TEST CHECK ROM CORRECTION CHECK
NO ***
ADJUSTMENT ITEM
EFFECTIVE MODEL
REVISION
21F-PA330I
3-1 3-2
3
Page 4
The flow of mode list as following, *Direct Key - in Mode for Service Items in Service Mode
USER DATA IN SERVICE MODE
1). While SERVICE mode ON,EEPROM DATA will swich to the service data. Also, once SERVICE mode OFF, EEPROM will swich back to previous USER DATA.
2). In the service mode, the user data establish as below,
RC CODE(HEX)
80 40 C0 20 A0 60 E0 10 50 E4 E4 75 F5 C2 8D D6 0D 36 46 C6 26 24 54 74 66 E6 C4
4C CC 2C AC EC
80
40 C0
20 A0
60 E0
10
50 E4 C1 CA
81
R/C KEY NAME
POS 1 POS 2 POS 3 POS 4 POS 5 POS 6 POS 7 POS 8 POS 0 FLASHBACK FLASHBACK WHITE TEMP UP WHITE TEMP DOWN TUNE DOWN SHARPNESS DOWN BALANCE LEFT SHARPNESS UP BALANCE RIGHT TREBLE UP TREBLE DOWN BASS UP COLOUR UP BRIGHTNESS DOWN TINT DOWN SURROUND UP SURROUND DOWN CONTRAST DOWN PICTURE HOLD TEXT CANCEL SIZE POS 1 POS 2 POS 3 POS 4 POS 5 POS 6 POS 7 POS 8 POS 0 FLASHBACK
SERVICE - ITEM
R-C UP (IN SERVICE MODE VOO) G-C UP (IN SERVICE MODE VOO) B-C UP (IN SERVICE MODE VOO) R-C DOWN (IN SERVICE MODE VOO) G-C DOWN (IN SERVICE MODE VOO) B-C DOWN (IN SERVICE MODE VOO) R-D UP (IN SERVICE MODE VOO) B-D UP (IN SERVICE MODE VOO) B-D DOWN (IN SERVICE MODE VOO) R-D DOWN (IN SERVICE MODE VOO) Y-MUTE (BESIDES OF SERVICE MODE VOO) RF-AGC (V01) VIF-VCO (V02) H-VCO (V03) SUB-CON (V04) SUB-COL (V05) SUB-BRIGHT (V06) SUB-TINT (V07) SUB-SHP (V08) SUB-COL-YUV (V09) SUB-TINT-YUV (V10) V-SIZE (V11), V-SIZE60 (V17) V-SHIFT (V12), V-SHIFT60 (V18) H-SHIFT (V13), H-SHIFT60 (V19) SCM-BR (V14) SCM-BB (V15) SUB-VOL (V16) S-TRAP-BG (V20) S-TRAP-I (V21) S-TRAP-DK (V22) S-TRAP-M (V23) S-TRAP-574 (V24) R-C UP YUV (IN SERVICE MODE V25) G-C UP YUV (IN SERVICE MODE V25) B-C UP YUV (IN SERVICE MODE V25) R-C DOWN YUV (IN SERVICE MODE V25) G-C DOWN YUV (IN SERVICE MODE V25) B-C DOWN YUV (IN SERVICE MODE V25) R-D UP YUV (IN SERVICE MODE V25) B-D UP YUV (IN SERVICE MODE V25) B-D DOWN YUV (IN SERVICE MODE V25) R-D DOWN YUV (IN SERVICE MODE V25) AUTO ADJ FOR V01, V02, V03, V20, V21, V22, V23, V24 T-SET SERVICE MODE
CONTRAST
COLOUR
BRIGHTNESS
TINT SHARPNESS WHITE TEMP
S-VOLUME SURROUND
TREBLE
BASS
BALANCE
BLUE BACK
C SYSTEM S SYSTEM
USER DATA
MAX (60) CENT (0) CENT (0) CENT (0) CENT (0)
STANDARD
MIN
OFF CENT (0) CENT (0) CENT (0)
OFF
AUTO
*1
*1: For each CH, data is same as before swich to Service mode.
After set the MCL to MCL4, pease set the INITIAL SETTING to INITIAL 9.
INITIAL 9: For Thai (ALL channel Sound System are set to B/G)
CH-No
0 1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35
Fv (MHz)
55.25
175.25
189.25
203.25
217.25
535.25
48.25
62.25
196.25
210.25
224.25
471.25
855.25
223.95
224.55
223.85
224.65
223.75
224.75
91.25
103.25
171.25
183.25
193.25
Sound Sys
B/G B/G B/G B/G B/G B/G
B/G B/G B/G B/G B/G B/G B/G
B/G B/G B/G B/G B/G B/G B/G
M M M M M
CH-No
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70
MCL4 (HEX D5)
Fv (MHz)
193.25
205.25
217.25
621.25
Sound Sys
M M M M
MCL4 (HEX D5)
PLL DATA OF ABOVE FREQ SHOULD TAKE THE ACCOUNT OF PIF SETTING IN SERVICE OPTION O04 (VIF) BEFORE STORING INTO EEPROM.
*NOTE :
4
4-1 4-2
Page 5
SHIPPING SETTING & CHECKING
(1) The following default data has been factory-set for the E2PROM follow by INITIAL DATA selected.
**AFTER INITIALIZED THE EEPROM (REFER TO FACTORY PRESETTING), READ DATA FROM EEPROM ADDRESS 00H ~ 03H, AND COMPARE TO THE LIST BELOW, IF DEFERENT, INITIALIZE THE EEPROM. ADDRESS DATA ADDRESS DATA 00H : 7BH 02H : 72H 01H : 72H 03H : 75H
***There are four stages of service mode data. First stage 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 srevice 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 - O30 (Option Mode)
*NOTE FOR OSD TYPE: 2: THAI & ENGLISH ONLY
LAST POWER LAST TV/AV MODE LAST POSITION FLASHBACK CHANNEL 1/2 DIGIT ENTRY VOLUME BLUE BACK OFF TIMER ON TIMER ON TIMER POSITION ON TIMER VOLUME REMINDER AFT COLOR SYSTEM SKIP NICAM ON/OFF NICAM STEREO MODE NICAM BILINGUAL MODE NICAM MONO MODE A2 ON/OFF A2 STEREO MODE A2 BILINGUAL MODE CONTRAST COLOR BRIGHTNESS TINT SHARPNESS WHITE TEMP SURROUND TREBLE BASS BALANCE
DATA SETTING
ON
TV MODE
CH 1 CH 1
2 DIGIT ENTRY
0 (Min)
OFF
--:--
--:--
--
--
--:--
ALL CH ON
ALL CH AUTO
ALL CH OFF
N/A N/A N/A N/A N/A N/A N/A
60
0 0 0 0 0
OFF
0 0
0 (CENTER)
ITEMS
INITIAL LANGUAGE
SOUND SYSTEM
9 ENGLISH
B/G
FACTORY SETTING BY MODEL
(Reference : Geomagnetism Adjustment)
MODEL MAGNETIC FIELD(V,H) nT BACKGROUND
LANG. S-SYS
LANG Q’TY
THAI 10,000 40,000 12300K
THAI
B/G
2
IN V00 CONDITION
NOTE-1
R-DRI UP R-DRI DN B-DRI UP R-DRI DN
NOTE-2
R-CUT UP R-CUT DN G-CUT UP G-CUT DN B-CUT UP B-CUT DN
07/07 27/39 08/08 0A/10
01/01 04/04 02/02 05/05 03/03 06/06
EEPROM ITEMS R-DRIVE B-DRIVE R-CUT G-CUT B-CUT RF-AGC VIF-VCO H-VCO SUB-CONTRAST SUB-COLOR SUB-BRIGHT SUB-TINT SUB-SHARPNESS SUB-COLOR-YUV SUB-TINT-YUV V-SIZE 50Hz V-SHIFT 50 Hz H-SHIFT 50 Hz SECAM-BR SECAM-BB SUB-VOL V-SIZE 60 Hz V-SHIFT 60 Hz H-SHIFT 60 Hz S-TRAP (BG) S-TRAP (I) S-TRAP (DK) S-TRAP (M) S-TRAP (5.74) CUTOFF/BKGD YUV R-DRI YUV B-DRI YUV R-CUT YUV G-CUT YUV B-CUT YUV SUB-CON YUV SUB-BRIGHT YUV VS-CORRECT VC-CORRECT OFFSET V LINEARITY V LINEARITY
OSD
V00 V00 V00 V00 V00 V01 V02 V03 V04 V05 V06 V07 V08 V09 V10 V11 V12 V13 V14 V15 V16 V17 V18 V19 V20 V21 V22 V23 V24 V25 V25 V25 V25 V25 V25 V26 V27 V28 V29 V30 V31
DATA LENGTH
0~127 0~127 0~255 0~255 0~255 0~127
0~63
0~7 0~127 0~127 0~255 0~127
0~63 0~127 0~127
0~63
0~7 0-31 0-63 0-63 0~60
-31~0~+31
-7~0~+7
-15~0~+15 0~15 0~15 0~15 0~15 0~15
0~127 0~127 0~255 0~255 0~255 0~127 0~255
0~63
-13~+13 0~63
-13~+13
ADJUSTMENT MODE (FIRST STAGE)
INTIAL DATA
63
63 127 127 127
50
31
3
100
63 127
63
43
90
63
38
3
9 37 22 60
0
-1 +2
7
7
7
7
7
63 63
127 127 127 100 127
32
0 32
0
FiX/ADJ/AUTO
ADJ ADJ ADJ ADJ ADJ ADJ ADJ ADJ ADJ ADJ ADJ ADJ
43
105
63 ADJ ADJ ADJ ADJ ADJ
60
0
-1
+2 ADJ ADJ ADJ ADJ ADJ
63
63 127 127 127 100 127
36
0
10
0
RC CODE (HEX)
NOTE-1 NOTE-1 NOTE-2 NOTE-2 NOTE-2
AE/174 AF/175
43/67 B1/177 6B/107 B0/176 6C/108
62/98
63/99 64/100
24/36
2A/42
2E/46 66/102 67/103
23/35
32/50
33/51
34/52
35/53
37/55
R/C KEY NAME
SERVICE DAC ONE COLUOR(RGB) BLUEBACK MCL4 FEATURE TIMER CONT UP CONT DOWN COL UP COL DOWN BRI UP BRI DOWN TINT UP TINT DOWN SHARPNESS UP SHARPNESS DOWN
R/C CODE (DEC/HEX)
129/81 119/77 126/7E
59/3B
171/AB
95/5F 83/53 34/22 35/23 36/24 37/25 41/29 42/2A 45/2D
46/2E 176/BO 177/B1
R/C KEY NAME
MPX/BIL INITIAL-9 P-NORMAL SYSTEM AUTO S-MUTE (V-MUTE/RGBINITAIL)
-/-- (V-MUTE/RGB ADJ DATA) SURROUND
R/C CODE (DEC/HEX)
24/18
238/EE
33/21 111/6F 131/83
23/17
60/3C 110/6E
5
5-1 5-2
Page 6
DATA LENGTH
0~15
0~3 0~3 0~3 0~3
0/1 0~63 0~63
0~127
0/1
0/1
0~7
0~7
0~4
0/1 0~31
-15~0~+15
-15~0~+15
-15~0~+15
-15~0~+15
-15~0~+15 0~255 0~255
-6~0~+7 0~3 0/1 0~3
0~3 0~3 0~3 0~2 0/1
0/1
0/1
0/1
0~255
0~3
0~3
0/1
0~255 0~255 0~255
0~255 0~255 0~255 0~255 0~255 0~255
0~60 0~60 0~60
0/1
-30~0~+30
-30~0~+30
-30~0~+30
-30~0~+30
INITIAL
DATA
14
0 0 1 0
0 30 34
9
1
0
6
0
0
1 16
0 +1
-2 +3
-1 35 70
0
1
0
1
0
3
3
0
1
0
0
1
255
2
2
1
0
0 70
150 156 163 165 170 180
21 60
7
1
+15
+15
+30
+30
VD2/VD1/AS/FBP-YUV
VDL UDL AUTO-SCM-KIL-TV SECAM-BGP N45 TXT-POS-H TXT-POS-V OSD-POS CP SMALL-SURR SUB-BASS SUB-TREB AGC-ADJ AGC-SW-OFF AGC-GAIN-ADJ FM-LEVEL-ADJ IGR-LEVEL-ADJ NICAM-BG-LVL-ADJ NICAM-I-LVL-ADJ NICAM-DK-LVL-ADJ NICAM-LOW-ERR-LIM NICAM-UPP-ERR-LIM IGR-GAIN-ADJ FM-ID-SPEED NICAM-AUTO-MUTE AUTO-SCM-KIL-AV-YUV
AFC1-GAIN-TV AFC1-GAIN-AV AFC1-GAIN-YUV CON-REDUCE TAKE-OFF-TV
TAKE-OFF-AV
TAKE-OFF-YUV
C-ANGLE AC-FALL-WO-BRIGHT
FORCED-SCM-KIL-TV
FORCED-SCM-KIL-AV­YUV R-Y ADJ V-DEMUTE-DELAY S-DEMUTE-DELAY MER
MEL1 MEL2 MEL3 MEL4 MEL5 MEL6 S-ST-POINT S-SP-POINT S-STEP POW-STORAGE
S-B-BASS
S-B-TREB
S-BASS
S-TREB
C.CLIP-LVL RGB-CLIP BS ABCL ABCL-GAIN S-OUT-LVL VIF-G SHPG SHPG-P SHPG-S SHPG-N4 SHPG-N3 YDL YDL-P YDL-S YDL-N4 YDL-N3 YDL-AV YDL-AV-P YDL-AV-S YDL-AV-N4 YDL-AV-N3 YDL-YUV COL-AV COL-P COL-S COL-N4 COL-N3 COL-ADJ SHP-AV SHP-YUV SHP-P SHP-S SHP-N4 SHP-N3 TINT-AV TINT-ADJ TINT-YUV-ADJ R-R B-R R-B B-B TRAP TRAP-P
TRAP-S
TRAP-N4
TRAP-N3
1W-TV
1W-AV
V-FREE (NO SYNC) AFC2 (NO SYNC) GAMMA BS-D/C BS-GAIN OM-DET SL-TV SL-AV SL-YUV VD2/VD1/AS/FBP-TV
VD2/VD1/AS/FBP-AV
CLIP LEVEL CONTRAST CONTROL OF RGB INPUT CLIPPING OF RGB CONTRAST CONTROL BLACK STRECH ABCL PROCESSING (ACL PROCESSING) ABCL PROCESSING GAIN AUDIO OUTPUT GAIN CONTROL P-IF DETETION GAIN OUTPUT SHARPNESS GAIN SHARPNESS GAIN PAL SHARPNESS GAIN SECAM SHARPNESS GAIN N443 SHARPNESS GAIN N358 Y SIGNAL DELAY Y SIGNAL DELAY PAL Y SIGNAL DELAY SECAM Y SIGNAL DELAY N443 Y SIGNAL DELAY N358 Y SIGNAL DELAY AV Y SIGNAL DELAY PAL (AV) Y SIGNAL DELAY SECAM (AV) Y SIGNAL DELAY N443 (AV) Y SIGNAL DELAY N358 (AV) Y SIGNAL DELAY YUV COLOUR OFFSET AV COLOUR OFFSET PAL COLOUR OFFSET SECAM COLOUR OFFSET N443 COLOUR OFFSET N358 COLOUR OFFSET ADJUST SHARPNESS OFFSET AV SHARPNESS OFFSET YUV SHARPNESS OFFSET PAL SHARPNESS OFFSET SECAM SHARPNESS OFFSET N443 SHARPNESS OFFSET N358 TINT OFFSET AV TINT OFFSET ADJUST TINT YUV OFFSET ADJUST R-DRIVE OFFSET WHEN WHITE TEMP IS RED B-DRIVE OFFSET WHEN WHITE TEMP IS RED R-DRIVE OFFSET WHEN WHITE TEMP IS BLUE B-DRIVE OFFSET WHEN WHIYE TEMP IS BLUE CENTER VALUE OF CHROMA TRAP CENTER VALUE OF CHROMA TRAP PAL CENTER VALUE OF CHROMA TRAP SECAM CENTER VALUE OF CHROMA TRAP N443 CENTER VALUE OF CHROMA TRAP N358 VERT SYNC DETECTION MODE FOR AV (1 WINDOW/2WINDOW) VERT SYNC DETECTION MODE FOR TV (1 WINDOW/2WINDOW) SET VERTICAL TO FORCED FREE RUN MODE HORIZONTAL AFC2 GAIN GAMMA CORRECTION QTY BLACK STRETCH CONTROL LEVEL BLACK STRETCH LEVEL OVER MODULATION DETECT SLICE LEVEL OF SYNC DETECTION SLICE LEVEL OF SYNC DETECTION TV SLICE LEVEL OF SYNC DETECTION YUV VD2 & VD1-VERT SYNC DETECT MIN WIDTH MSB & LSB RESPECTIVELY, AS-TV/AV/YUV SWICH & CHCHANGE, FBP-FLYBACK PULSE SLICE LEVEL (TV) VD2 & VD1-VERT SYNC DETECT MIN WIDTH MSB & LSB RESPECTIVELY, AS-TV/AV/YUV SWICH & CHCHANGE, FBP-FLYBACK PULSE SLICE LEVEL (AV)
OSD
F01 F02 F03 F04 F05 F06 F07 F08 F09 F10 F11 F12 F13 F14 F15 F16 F17 F18 F19 F20 F21 F22 F23 F24 F25 F26 F27 F28 F29 F30 F31 F32 F33 F34 F35 F36 F37 F38 F39 F40 F41 F42 F43 F44
F45
F46
F47
F48
F49
F50 F51 F52 F53 F54 F55 F56 F57 F58 F59
F60
DATA LENGTH
0/1 0/1 0/1 0/1 0/1
0~127
0~7 0/1 0/1 0/1 0/1 0/1 0~7 0~7 0~7 0~7 0~7 0~7 0~7 0~7 0~7 0~7 0~7
-31~0~+31
-31~0~+31
-31~0~+31
-31~0~+31
-31~0~+31
-31~0~+31
-31~0~+31
-31~0~+31
-31~0~+31
-31~0~+31
-31~0~+31
-31~0~+31
-63~0~+63
-63~0~+63
-63~0~+63
-63~0~+63
-63~0~+63
-63~0~+63
-63~0~+63 0~3 0~3
0~3
0~3
0~3
0/1
0/1
0/1 0/1 0~3
0~15
0/1 0/1 0~7 0~7 0~7
0~15
0~15
INITIAL
DATA
0 0 0 0 0
95
4 0 0 0 0 1 5 5 7 5 5 6 6 7 6 6 6
+10
0
+9
-8
-7 0
+5
0 0
-5 0 0 0 0 0
+8
-10
-3
+13
2 2
2
2
2
0
1
0 0 0
10
0 0 2 4 4 6
14
SET UP
(DEC)
0 0 0 0 0
95
4 0 0 0 0 1 5 5 7 5 5 6 6 7 6 6 6 0 0
+9
-8
-7 0
+1
0 0
-5 0 0
-3
-5 0 0
-9
-6
+8
2 2
2
2
2
0
1
0 0 0
10
0 0 2 4 4 6
14
VD2 & VD1-VERT SYNC DETECT MIN WIDTH MSB & LSB RESPECTIVELY, AS-TV/AV/YUV SWICH & CHCHANGE, FBP-FLYBACK PULSE SLICE LEVEL (YUV) COLOUR DIFF. INPUT PHASE ADJ COLOUR DIFF. INPUT PHASE ADJ SECAM COLOUR KILLER SENSITIVITY (TV) INTERNAL SECAM BGP TIMING INHIBIT 50Hz NTSC 4.43 TELETEXT HORIZONTAL POSITION TELETEXT VERTICAL POSITION OSD POSITION CHARGE PUMP SURROUND MODE SELECT SUB BASS CONTROL SUB TREBLE CONTROL AGC LEVEL ADJUST NICAM AGC SWICH OFF NICAM AGC GAIN ADJUST FM LEVEL ADJUST IGR LEVEL ADJUST NICAM B/G LEVEL ADJUST NICAM I LEVEL ADJUST NICAM D/K LEVEL ADJUST NICAM LOWER ERROR LIMIT NICAM UPPER ERROR LIMIT IGR GAIN ADJUST FM SOUND IDENTIFICATION MODE NICAM AUTO DETECTION SECAM COLOUR KILLER SENSITIVITY (AV/YUV) MSB OF HORIZONTAL AFC GAIN1 (TV) MSB OF HORIZONTAL AFC GAIN1 (AV) MSB OF HORIZONTAL AFC GAIN1 (YUV) CONTRAST (PICTURE LEVEL) CONTROL TAKEOFF/BPF OF CHROMA BPFPROCESSING TV TAKEOFF/BPF OF CHROMA BPFPROCESSING AV TAKEOFF/BPF OF CHROMA BPFPROCESSING YUV CHROMA MODULATION ANGLE PICTURE BLACK LEVEL (BRIGHT) CONTROL­AC FAILURE FORCED SECAM COLOUR KILLER SENSITIVITY(TV) FORCED SECAM COLOUR KILLER SENSITIVITY(AV/YUV) COLOUR EDGE IMPROVEMENT VIDEO DEMUTE DELAY SOUND DEMUTE DELAY S-BOOSTER FREQ. CHARACTERISTIC CONTROL S-BOOSTER LEVEL1 S-BOOSTER LEVEL2 S-BOOSTER LEVEL3 S-BOOSTER LEVEL4 S-BOOSTER LEVEL5 S-BOOSTER LEVEL6 S-BOOSTER START POINT S-BOOSTER STOP POINT S-BOOSTER STEP CONTRAST/BRIGHTNESS INCREASE GRADUALLY S-BOOSTER BASS LIMITER (WHEN S-BOOSTER ON) S-BOOSTER TREBLE LIMITER (WHEN S-BOOSTER ON) S-BOOSTER BASS LIMITER (WHEN S-BOOSTER OFF) S-BOOSTER TREBLE LIMITER (WHEN S-BOOSTER OFF)
OSD
F61
F62 F63 F64 F65 F66 F67 F68 F69 F70 F71 F72 F73 F74 F75 F76 F77 F78 F79 F80 F81 F82 F83 F84 F85 F86 F87
F88 F89 F90 F91 F92
F93
F94
F95 F96
F97
F98
F99 F100 F101 F102
F103 F104 F105 F106 F107 F108 F109 F110 F111 F112
F113
F114
F115
F116
SET UP
(DEC)
14
0 0 1 0
0 30 34
9
1
0
6
0
3
1 16
0 +1
-2 +3
-1 35 70
0
1
0
1
0
3
3
0
1
0
0
1
255
2
2
1 25 40 70
150 156 163 165 170 180
21 60
7
1
+15
+15
+30
+30
SETTING MODE (SECOND STAGE)
EEPROM ITEMS
FUNCTION
SETTING MODE (SECOND STAGE)
EEPROM ITEMS
FUNCTION
6
6-2
6-1
PRESS MENU KEY (x1) IN SERVICE MODE , LIST BELOW WILL APPEAR
Page 7
PRESS MENU (x2) IN SERVICE MODE, LIST BELOW WILL APPEAR
CHECK MODE (THIRD STAGE)
INFO
SVL1 ** *** SVL2 ** *** SVL3 ** *** SVL4 ** ***
MICON : ZZ CHK1 : ACT SOFT : 0.79 CHK2 : NO
INITIAL
DATA
0 0
0 255 127 255 127
0
1
0
0
0
0
0
0
0
0
2
0
0
8
8
0
+7
SET UP
(DEC)
0 0
0 255 127 255 127
0
1
0
0
0
0
0
+3
-8 0 2
-7
-23 8 8 0
+7
V-STD-TV V-STD-AV V-STD-YUV WO-BRI-AFT-WO-TIME WO-CONT-AFT-WO-TIME WO-BRI-BEF-WO-TIME WO-CONT-BEF-WO-TIME WO-TIME A2-ID-RESPONSE R-DRI YUV OFFSET B-DRI YUV OFFSET R-CUT YUV OFF-SET G-CUT YUV OFF-SET B-CUT YUV OFF-SET CON YUV OFFSET BRT YUV OFFSET SHP ANT-ONII OFFSET WAIT MD TIME CONT-OFFSET BRI-OFFSET CR-PEDESTEL-ADJ CB-PEDESTEL-SDJ SIF-PAL AV2-BRIGHT-OFFSET
OSD
F117 F118 F119 F120 F121 F122 F123 F124 F125 F126 F127 F128 F129 F130 F131 F132 F133 F134 F135 F136 F137 F138 F139 F140
DATA LENGTH
0/1 0/1
0/1 0~255 0~127 0~255 0~127 0~31
0/1
-63~0~+63
-63~0~+63
-63~0~+63
-63~0~+63
-63~0~+63
-63~0~+63
-63~0~+63
-31~0~+31 0~4
-63~0~+63
-63~0~+63
0~15 0~15
0/1
-15~0~+15
SETTING MODE (SECOND STAGE)
EEPROM ITEMS FUNCTION
OSD
O01 O02 O03 O04 O05 O06 O07 O08 O09 O10 O11 O12 O13 O14 O15 O16 O17 O18 O19 O20 O21 O22 O23 O24 O25 O26 O27 O28 O29 O30
DATA LENGTH
0/1 0~99 0~60
0/1
0/1
0/1
0/1
0/1 1~15
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
1~255
1~5
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
INITIAL
DATA
0
--
-­1 1 1 1 0
15
1 1 1 1 0 0 0 0
63
3 0 0 0 0 0 1 0 0 0 0 0
SET UP
(DEC)
0
--
-­1 0 0 0 0 1 1 1 1 1 0 0 0 1
65
3 0 0 0 0 0 0 0 0 0 0 1
OPTION MODE (FOURTH STAGE)
EEPROM ITEMS
***HOTAL MODE ***HTL-POS ***HTL-VOL VIF SECAM N443(RF) N358(RF) FORCE-COL S-SYS AV AV2 YUV S-CTRL NICAM A2 TELETEXT BILLINGUAL LANGUAGE SEARCH-SPEED R/C-MENU LED-CONT S-BOOSTER SHARP-LOGO YUV BKGD ADJ WHITE BACK BOOSTER MESSAGE MESSAGE SCROLL TIME LNA TUNER ONE CHIP IC
***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 on 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.
PRESS MENU (x3) IN SERVICE MODE, LIST BELOW WILL APPEAR
7
7-2
7-1
Page 8
ADJUSTMENT PRECAUTION:
Make sure TV Set is in “Normal Condition” before witch to service mode for adjustment.
PIF ADJUSTMENT
No.
1
2
Adjusting point Tuner IFT (PRESET)
RF-AGC TAKE OVER POINT ADJUSTMENT (I2C BUS CONTROL)
(AUTO & MANUAL ADJ)
Get the tuner ready to receive the CH. - 9 signal, but with no signal input. Adjust the PLL data. Connect the sweep genertor’s output cable to the tuner antenna. (RF SWEEP) Adjust the sweep genertor’s to 80dBµV. Connect the response lead (use LOW IMPEDANCE probe with wave detector. (This terminal must have the probe alone connected). Set the RF AGC to 0 - 6 V with no saturation with the waveform. Adjust the tuner IF coil to obtain the wavefrom as show in Fig. 2.
NOTE: Be sure to keep the tuner cover in posi­ tion during this adjustment.
Receive “PAL COLOUR BAR” signal. Signal Strength: 56 1 dBµV (75 ohm open) Connect the oscilloscope to TP201 (Tuner’s AGCTerminal) as show in Fig. 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. Change the antenna input signal to 63~67dBµV, and make sure there is no noise. Turn up the input signal to 90~95 dBµV to be sure that there is no cross modulation beat.
Wavefrom and others
for Auto ADJ
Receive “PAL COLOUR BAR” signal. Signal strength : 56 1 dBµV (75 ohm open) Go to service mode. Go to service data V01, press R/C to operate auto key (Hex C1) and confirm the ‘OK’ display on the screen. If appear NG, increase data some step and pis repeat step2. Preceed step 4&5 in manual mode.
PURITY ADJUSTMENT
No.
1
Adjusting point PURITY ADJ.
Receive the GREEN-ONLY signal. Adjust the beam current to ~700 µA. Degauss the CRT enough with the degauss coil. Note: Follow the Job Instruction Sheet to adjust the magnetic field. Vertical Bv: +0.030 mT (0.30 gauss) Horizontal Bh: +0.20 mT (0.20 gauss) Maintain the purity magnet at the zero magnetic field and keep the static convergence roughly adjusted. Observe the points a, b, as show in Fig. 1-1 through the microscope. Adjust the landings to A rank requirement. Orient the raster rotation to 0 eastward. Tighten up the deflection coil screws. Tightening torque: 108 20 N (11 2 kgf) 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
µµ
µµ
µA.
Note: Set to service mode by remote con­ troller then press factory process R/C RGB key to change to RGB mono col­ our mode.
* For the following colour press R/C RGB(Hex 7E) key to change.
Wavefrom and others
* Press R/C RGB key for 1 sec­ ond in NORMAL MODE, the colour will change to RGB mono colour mode.
Signal-colour
screen cleared
GREEN
ONLY
BLUE ONLY
RED
ONLY
E-9 CH
PC
-1.5+/-0.8dB
10k
100k
1n60
75ohm
IFOUT
1000p
1000p
Oscilloscope
Fig. 2
Fig. 1
1.
2.
3.
4.
5
6.
Adjusting procedure/conditions
1.
2.
3.
4.
5
Bias box: About 4.5 V
Oscilloscope
0.1V
TV Set
Bias box
TP201+
+
Fig. 3
1.
2.
3.
4.
1.
2.
3.
4.
5
6.
7.
Adjusting procedure/conditions
a
b
30mm 30mm
A
B
A=B
A
B
A=B
Fig. 1-1
Fig. 1-2
Rank “A”
(on the right of the CRT)
Fig. 1-3
Rank “A”
(on the left of the CRT)
8
8-2
8-1
+
_
+
_
+
_+
_
Page 9
CONVERGENCE ADJUSTMENT
No.
1
Adjusting point CONVERGENC ADJ. (To be done after the purity adjustment.
1. Receive the “Crosshatch Pattem” signal.
2. Using the remote controller, call NORMAL mode.
Static convergence
Turn the 4-pole magnet to a proper opening angle in order to superpose the blue and red colours. 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
Adjust the convergenc on the fringes of the screen in the following steps. a) Fig. a: Driver 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 downmard. c) Fig: c: Drive the the “c” wedge deeper and swing the deflection coil rightward. d) Fig. d: Drive the “b” wedge deeper and swing the deflection coil leftward. Fix all the wedges on the CRT and apply glass tape over them. Apply lacquer to the deflection yoke lock screw, magnet unit (purity, 4-pole, 6-pole magnets) and magnet unit lock screw.
Finally received the Red-only and Blue-only signals to make sure there is no other colours on the screen.
Wavefrom and others
H-VCO, VIF-VCO & S-TRAP for ADJUSTMENT
No.
1
2
3
Adjusting point H-VCO ADJ (I2C BUS CONTROL) (AUTO & MANUAL ADJ)
VIF-VCO ADJ (I2C BUS CONTROL) (AUTO & MANUAL ADJ)
S-TRAP fo ADJ (I2C BUS CONTROL) (AUTO & MANUAL ADJ)
Adjusting procedure/conditions
(MANUAL ADJ)
In No signal (RASTER) condition. Go to service mode, choose service data V03. Connect oscilloscope to IC801 pin11, adj V03 until freq become 15.625 0.15 KHz
(AUTO ADJ)
In No signal (RASTER) condition. Go to service mode. Choose service data V03, by pressing R/C Auto (Hex C1) key, OSD will appear “OK” at screen. If appear “NG” pls repeat step 3.
(MANUAL ADJ)
In No signal (RASTER) condition. Go to service mode, choose service data V02. Connect oscilloscope to IC801 pin2, adj V02 until voltage become 2.5 1V.
(AUTO ADJ)
In No signal (RASTER) condition. Go to service mode, choose service data V02. Press the R/C Auto (Hex C1) key, OSD will appear “OK” at screen. If appear “NG” pls repeat step 3.
(Manual ADJ)
In No signal (RASTER) condition. Go to service mode, choose service data V21. Connect oscilloscope to TP 801, adj V21 until voltage become Min (below 5 V). After that pls adj service data V20 & V24 same as “V21”, V22 to “V21-1”, V23 to V21+2”.
(Auto Adj)
In No signal (RASTER) condition. Go to service mode, choose service data V21. Press the R/C Auto (Hex C1) key, OSD will appear “OK” at screen. If appear “NG” pls repeat step 3.
Wavefrom and others
This adjustment must be done after aging at least 3 minutes.
9
9-2
9-1
Adjusting procedure/conditions
1.
2.
1.
2.
3.
4-pole magnet
6-pole magnet
CRT neck
20mm
Lacquer
Purity magnet
RGB
BGR
R G B
R G B
B G R
B G R
RGB
BGR
Lacquer
Wedge "a"
Wedge "b"
Wedge "c"
About
100Deg
About 100Deg
Fig. a
Fig. b
Fig. c
Fig. d
1.
2.
3.
1.
2.
3.
4.
1.
2.
3.
1.
2.
3.
4.
1.
2.
3.
4.
1.
2.
3.
4.
+
_
+
_
Page 10
SCREEN, WHITE BALANCE, SUB-BRIGHTNESS & SUB-CONTRST ADJUSTMENT
No.
1
2
3.
In window pattem signal condition.
Go to service mode, then select V00.
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, Sub-brightness V06 auto switch to 127. Y-mute & Vertical off, screen will be invertical cut-off condition.
Adjust the Screen so that cut-off line appear in low bright, then judge that whether the cut-off the 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 Y-mute & V-cut so that picture appear in normal mode.
WHITE (HIGHT BEAM) (In Window Pattern Signal) First use Minolta Color Analyzer CA100, let the gun point at Dark White position (as drawing attach), Adj V06 until LUMINANCE Y become 5 cd/m2, then let the gun point at White position (as drawing attach), Adj V04 until LUMINANCE Y become: 200 cd/m2. Adj the R-D & B-D until the axis of color temperature become X=300, Y=310 7500K
DARK WHITE (LOW BEAM) (In Window 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.
In Window Pattern Signal condition.
Using Minolta Color Analyzer CA-100, let the gun point at Dark White position (as attach drawing), adjust V06 Bus data until LUMINANCE Y = 3 0.5 cd/m2.
Wavefrom and others
Adjusting point SCREEN ADJUSTMENT (I2C BUS CONTROL)
WHITE BAL­ANCE ADJ (to be done after screen adj) (I2C BUS CONTROL)
SUB­BRIGHTNESS (to be done after screen, white balance adj) (I2C BUS CONTROL)
SignalusingW/B Pattern Generator SX-1006 (IWATSU) or equivalent. Window Pattern Signal outputlevel are asabove:
10
10-2
10-1
Adjusting procedure/conditions
1.
2.
3.
4.
5.
1.
2.
1.
2.
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
RC key “1” (HEX 80) RC key “4” (HEX 20) RC key “2” (HEX 40) RC key “5” (HEX A0) RC key “3” (HEX C0) RC key “6” (HEX 60) RC key “7” (HEX E0) RC key “Flashback” (HEX E4) RC key “8” (HEX 10) RC key “0” (HEX 50)
Dark WhiteWhite
9.5% IRE
50% IRE
5.5% IRE
*Note:
Dark White
WINDOW PATTERN SIGNAL
In Window Pattern Signal condition.
Using Minolta Color Analyzer CA-100, let the gun point at White position (as attach drawing), adjust V04 Bus data until LUMINANCE Y= 200 10cd/m2.
Recive the “Monoscope Pattern” signal. Press R/C to set Picture Normal condition. Connect the DC miliammeter between TP 603 (+) & TP 602 (-). (Full Scale: 3mA Range) Beam current must be within 1000 100 µA.
Receive Monoscope Pattern Signal (PAL 50 Hz) Choose the service data V13. Adjust the V13 bus data to have a balance position to spec of A=B (as attach drawing) If cannot make it to A=B, adjust from the best point so that b slightly smaller than A.
Recceive Monoscope Pattern Signal (PAL 50 Hz) Choose the service data V12. Adjust 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.
Receive Monoscope Pattern Signal (PAL 50 Hz) Choose the service data V11. Adjust V11 bus data until the overscan become 10 1.5%
Confirm Service data V08 is 43.
Receive the “Monoscope Pattern” signal. Press R/C to set Picture NORMAL condition. Adjust the focus control to get the best focusing.
Wavefrom and others
No.
4
5
No.
1
2.
3.
4.
5.
Adjusting point SUB­CONTRAST (to be done after screen, white balance adj, sub-brightness adj) (I2C BUS CONTROL)
Beam Current Check
Adjusting point H-SHIFT (I2C BUS CONTROL) (to be done after purity adj)
V-SHIFT (I2C BUS CONTROL) (to be done after purity adj)
V-SIZE (I2C BUS CONTROL) (to be done after purity, V-shift adj)
SUB­SHARPNESS Focus
Adjusting procedure/conditions
1.
2.
1.
2.
3.
4.
1.
2.
3.
4
1.
2.
3.
1.
2.
3.
1.
1.
2.
3.
White
WINDOW PATTERN SIGNAL
HORIZONTAL, VERTICAL, DEFLECTION LOOP and FOCUS ADJUSTMENT
Wavefrom and others
Adjusting procedure/conditions
Caution1: Pls aging TV more than 10 minutes before adjustment. Caution2: for H-shift & V-shift & V-size adj, after adj pls switch to Monoscope pattern signal (NTSC 60 Hz) to confirm all position are the same.
A
B
AB
OK OK NG
Figure:
+
_
+
_
+
_
+
_
Page 11
A/V INPUT, OUTPUT & COMPONENT IN CHECKING
Receive the “PAL Colour Bar” signal (100%White Colour Bar, Sound 400Hz 100% Mod.) Terminate the Video output with a 75 ohm impedance. Make sure the output is as specified (1.0 Vp-p 3dB). Terminate the Audio output with a 10K ohm impedance. Make sure the O/P is as specified (1.5 Vp-p 3dB).
Using the TV/VIDEO key on the remote controller, make sure that the modes change in order of TV, AV1, AV2 & TV again and the video & audio output are according to the input terminal for each mode.
Using the TV/AV 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. If connect input to front and rear AV terminal, input terminal of front AV will be selected.
Connect YUV & Audio signal to Component In terminal and Audio terminal. Using the TV/VEDIO key on the remote controller, press it until the modes change to COMPONENT, confirm output is appear.
Wavefrom and others
Adjusting point VIDEO AND AUDIO OUTPUT CHECK
VIDEO AND AUDIO INPUT CHECK
COMPONENT IN CHECK
No.
1
2
3
No.
1
NTSC CHROMA ADJUSTMENT
Recive the “NTSC3.58 Colour Bar “ signal thru AV in. Connect the osilloscope to B-Amp Transistor Base (TP853). n Range :100mV/Div(AC) (User Probe10:1) n Sweep Time : 10 µsec/Div. In Service mode, go to V07, press R/C Y- mute (Hex E4) or FLASHBACK Key. Call the “V07” data in service mode. Adjust the “V07” bus data to obtain the waveformshown as Fig. 1-1. Disable Y-Mute by pressing key(Hex E4) or FLASHBACK, then clear the SERVICE mode.
Adjusting point SUB-TINT (I2C BUS CONTROL)
Wavefrom and others
Adjusting procedure/conditions
1.
2.
3.
4.
5.
WYCyGMgRB
Fig. 1-1
PAL CHROMA ADJUSTMENT
Recive the “PAL Colour Bar “ signal Press R/C to set Picture Normal condition. Connect the osilloscope to R-Amp Transistor Base (TP851). n Range :100mV/Div(AC) (User Probe10:1) n Sweep Time : 10 µsec/Div. Using the R/C call V05 in Service mode. Adjust V05 bus data, so that the 75% White & Red portions of PAL Colour Bar be at the same level shown as Fig 1-1. Clear the Service mode.
Adjusting point SUB-COLOUR (I2C BUS CONTROL) (to be done after sub-picture, sub tint adj)
Wavefrom and others
Adjusting procedure/conditions
1.
2.
3.
4.
5.
Fig. 1-1
No.
1
Cy G B
W
Y 100% W Mg R
75%
No.
1
2
3
PROTECTOR OPERATION CHECKING
Receive “Monoscope Pattern” signal. Set CONTRAST MAX. Set BRIGHT MAX. During the Collector & Emitter of Q853/4/5 short, make sure the protector ON and switch to standby mode.
Receive “Monoscope Pattern” signal. Connect output of Bias Box to D602 cathode (C602 positive). Set voltage of Bias Box to 18V and make sure the protector is not working. Set voltage of Bias Box to 27V, and make sure the protector is working.
Once finish rectified Electrolytic Capacitor short testing in +B line, check all possible damaged components on +B line. (Use random selected set for inspection)
Wavefrom and othersAdjusting point BEAM PROTECTOR
H, V PROTECTOR
OTHER PROTECTOR
Adjusting procedure/conditions
1.
2.
3.
4.
1.
2.
3.
4.
1.
Adjusting procedure/conditions
1.
2.
3.
1.
1.
1.
2.
+
_
+
_
FUNCTION OPERATION CHECKING (VIDEO AND AUDIO)
No.
1
2
3
4
5
Adjusting point CONTRAST key
COLOUR key
BRIGHTNESS key
TINT key
SHARPNESS key
Receive “Monoscope Pattern” signal. Set MENU, then go into PICTURE mode to select CONTRAST. Press Volume UP/Down key to check whether the CONTRAST effect is OK or not.
Receive “Colour Bar” signal. Set MENU, then go into PICTURE mode to select COLOUR. Press Volume UP/Down key to check whether the COLOUR effect is OK or not.
Receive “Monoscope Pattern” signal. Set MENU, then go into PICTURE mode to select BRIGHTNESS. Press Volume UP/Down key to check whether the BRIGHTNESS effect is OK or not.
Receive “NTSC Colour Bar” signal thru AV in. Set MENU, then go into PICTURE mode to select TINT. Press Volume UP/Down key to check TINT, UP for GREEN direction and DOWN for PURPLE direction whether is OK or not.
Receive “Monoscope Pattern” signal. Set MENU, then go into PICTURE mode to select SHARPNESS. Press Volume UP/Down key to check whether the SHARPNESS effect is OK or not.
Wavefrom and others
Adjusting procedure/conditions
1.
2.
3.
1.
2.
3.
1.
2.
3.
1.
2.
3.
1.
2.
3.
11
11-2
11-1
*Select one of Q853/4/5 to do each short.
Page 12
No.
6
7
8
9
10
11
12
13
Adjusting point CH DISPLAY COLOUR
NORMAL key
WHITE TEMP
COLOUR SYSTEM
SURROUND
TREBLE
BASS
BALANCE
All Ch (1~99) will have an OSD display of the channel number in green colour under AFT ON ondition.
Once in PICTURE or SOUND Mode, and the NORMAL key is pressed, all the settings will be preset to normal setting accordingly. (Normal setting value for every mode)
Receive “Monoscope Pattern” signal. Set MENU, then go into PICTURE mode to select WHITE TEMP. Press Volume Up/Down key to check WHITE TEMP function The back ground will change to (shift right) bluish and (shift left) reddish.
Receive the “PAL COLOUR BAR” signal, press MENU, choose CH-SETTING to select COLOUR mode except PAL, check the COLOUR is not working properly. Then, sclect the “PAL” mode. Check again its colour so that it is working properly. Receive “NTSC 3.58/4.43 COLOUR BAR” signal thru AV, press MENU, choose CH-SETTING to select COLOUR modes except N3.58/4.43, check the COLOUR is not working properly.Then, select the N3.58/4.43 mode. Check again its colour so that it is working properly.
Receive “music” sound signal. Set MENU, then go into SOUND MENU to select SURROUND. Press Volume UP/DOWN key to check SURROUND I, II and OFF effect.
Receive “music” sound signal. Set MENU, then go into SOUND MENU to select TREBLE. Press Volume UP/DOWN key to check whether the TREBLE effect is OK or not.
Receive “music” sound signal. Set MENU, then go into SOUND MENU to select BASS. Press Volume UP/DOWN key to check whether the BASS effect is OK or not.
Receive mono-tone signal. Set MENU, then go into SOUND MENU to select BALANCE. Press Volume UP/DOWN key to check whether the left to right BALANCE effect is OK or not.
Wavefrom and others
In NORMAL Mode, when press NORMAL key, will appear NORMAL OSD and all setting PICTURE, SOUND functions set to NORMAL.
No.
14
15
16
No.
1
Adjusting point SOUND SYSTEM
NOISE MUTE CHECKING
OSD LANGUAGE QUANTITY CHECK
Adjusting point HEADPHONE OUTPUT CHECKING
Receive “PAL-B/G” signal, press MENU, choose CH-SETTING to make sure there is NO sound system selection and check the sound output is working properly.
Receive “PAL COLOUR BAR” signal. Turn UP the volume control to maximum, make sure the sound is head from the speakers. Turn put the until in no signal state. Check the sound mute is effective. Finally turn sound level of CTV to minimum.
Check OSD LANGUAGE quantity and type for respect model.
Receive PAL COLOUR BAR with SOUND 400Hz, 100% MODULATION ( 50KHz Dev). Maximum volume, and ckeck the headphone output with 400Hz sound and no sound output from speaker.
Wavefrom and others
Adjusting procedure/conditions
1.
1.
1.
2.
3.
1.
2.
1.
2.
3.
1.
2.
3.
1.
2.
3.
1.
2.
3.
: MAX : CENTER : CENTER : CENTER : CENTER : CENTER
PICTURE MENU
CONTRAST COLOUR BRIGHTNESS TINT SHARPNESS WHITE TEMP
SOUND MENU
SURROUND : OFF TREBLE : CENTER BASS : CENTER BALANCE : CENTER
Adjusting procedure/conditions
1.
2.
1.
2.
3.
4.
1.
1.
2.
QUANTITY
ENGLISH
THAI
2
OO
SHOCK TEST CHECKING
Hit at the top of TV set for two time. Check TV set not damage and TV operation operate correctly.
Receive bilingual channel. Press R/C “MPX” button, and the sound will change SOUND1 to SOUND2.
Wavefrom and others
Adjusting point SHOCK TEST
Adjusting point BILINGUAL FUNCTION CHECKING
BILINGUAL CHECKING
Wavefrom and others
No.
1
No.
1
Adjusting procedure/conditions
1.
2.
1.
2.
Adjusting procedure/conditions
HEADPHONE JACK CHECKING
Adjusting procedure/conditions
Wavefrom and others
12
12-2
12-1
+
_
Page 13
TROUBLE SHOOTING FLOWCHART
TROUBLE SHOOTING FLOWCHAT (Continued)
NO RASTER
Blown out.
Replace the fuse.
Check IC701, D701 and C705.
The fuse is blown out again.
Does horizontal circuit oscillate ?
Check T701 pin (17) voltage (Approx. 310V at 220V AC)
Check F701.
Check Secondary Main+B (Approx. 125V)
Check CRT connector K­wire and the signal on it.
Check Q601 and
Q602.
Check 185V Bias on CRT
board.
Check IC801.
Checking the protector
circuit.
Check Q752 for 8V regulator circuit and Q751, Q754 for 5V regulator
circuit.
Check D751, IC702 and IC703.
Check
NR701.
NO PICTURE, NO SOUND
No snow noise.
Does noise or signal appear at pin (41) of IC801 ?
Noise increases but no signal is received.
Check the tuner supply voltage LB must approx. 5V. BT must be approx. 33V. And check the CH preset
data.
Check the tuner AGC at TP201.
Does noise or signal appear at pin (58) of IC801
?
Check IC801 and related
circuit.
Check IC401 and related
circuit.
Check pin (1) of SF201, Tuner and related
circuit.
Check pin (60) at IC801 and related circuit.
Check pin (59) of IC801, Tuner and related
circuit.
Check pin(58) of IC801.
Does the noise level increase at max. Contrast, Brightness and Sound controls ?
CIRCUITS TO BE CHECKED:
» Tuner. » PIF. » Automatic Gain Control. » (5V), (32V) Power Source.
Does noise or signal appear at pin (63) and (64) of IC801 ?
Does signal appear at pins (10) and (23) of IC3501 ?
NO SOUND
CIRCUITS TO BE CHECKED:
» Sound Detector Circuit. » Sound Switch and Att.
Control.
» Audio Output
Circuit.
Does signal appear at pins (6) and (8) of IC301 ?
Check TV sound from pin (54) of IC801.
Check Speaker.
Check IC301 and peripheral circuit.
13
13-2
13-1
Page 14
TROUBLE SHOOTING FLOWCHART (Continued) TROUBLE SHOOTING FLOWCHART (Continued)
NEITHER VERTICAL NOR
HORIZONTAL SYNCHRONIZATION
CIRCUIT TO BE CHECKED:
» Sync. Separator
Circuit.
Check pins(5), (6), (10) and (11) of
IC801.
Vertical linearity and size are abnormal.
DEFECTIVE VERTICAL AMP.
AND VERTICAL
LINEARITY
Re-adjust vertical size. (Bus
Data)
Check R503, R506, R513, R520 and
C515.
NO VERTICAL SCAN
Check IC501.
Check C511.
Check IC501 bias.
NO SPECIFIC COLOUR
Is some colour produced in B/W broadcast reception ?
Is the white balance properly adjusted ?
Re-adjust the white balance.
The picture colour is yellow.The picture colour is magenta.The picture colour is cyan.
Check Q855 and its adjacent circuits.
Check Q854 and its adjacent circuits.
Check Q853 and its adjacent circuits.
Check
IC801.
14
14-2
14-1
Page 15
8 5
14
AT24W08
CATHODE
ANODE
A2
EX1393C
42
IXB225WJZZ
22
21
SHARP
IXB225W
30 16
1
5
NJW1142
CATHODE
ANODE
P1
EX0263T
64
13
M1501XN
46
31
IMX1C/C
64
M61266F
1
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
646362616059585756555453525150
49
171819202122232425262728293031
32
16 33
48
49
17
32
M61266F
1
2
4
3
PC123
S4
FXA003WJ
COLLECTOR
BASE
EMITTER
C3928
COLLECTOR
BASE
EMITTER
A1530
46
31
IMZ1A
CATHOD
ANODE
(RED)
PX0013
17
AN15525
+~ ~
_
DX0476CE
12
1
2
EC
B
2SC3198
ECB
2SD468-C 2SC2235
GND
COLLECTOR
V
out
SE125N AN17820B
ECB
TT2140
LOTNo.
TT2140
123
PQ09RDA
14
DX0452CE
CATHOD ANODE
STRW6753
17
2SC3789
ECB
C3789
1
1
1
1
SOLID STATE DEVICE BASE DIAGRAM
TOP VIEW
15
SIDE VIEW
Page 16
WAVE FROMS
16
ServiceManual
1) 0.976 Vp-p Horiz. Rate
2) 4.520 Vp-p Horiz. Rate
3) 4.760 Vp-p Horiz. Rate
4) 4.360 Vp-p Horiz. Rate
5) 6.12 Vp-p Horiz. Rate
6) 6.24 Vp-p Horiz. Rate
7) 1.80 Vp-p Vert. Rate
8) 1.76 Vp-p Vert. Rate
9) 5.63 Vp-p Horiz. Rate
10) 51.6 Vp-p Horiz. Rate
11) 1040 Vp-p Horiz. Rate
12) 53.6 Vp-p Vert. Rate
13) 4.8 Vp-p Vert. Rate
14) 126 Vp-p Horiz. Rate
15) 508 Vp-p
16) 5.28 Vp-p Horiz. Rate
17) 5.36 Vp-p Vert. Rate
18) 88.8 Vp-p Horiz. Rate
19) 96.8 Vp-p Horiz. Rate
20) 99.2 Vp-p Horiz. Rate
Page 17
CHASSIS LAYOUT
17
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BLOCK DIAGRAM
PWB A : MAIN UNIT
18
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19
PWB B : CRT UNIT
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PWB C : HEADPHONE UNIT
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20
PWB E : SOUND CONTROL UNIT
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DESCRIPTION OF SCHEMATIC DIAGRAM
IMPORTANT SAFETY 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.
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.
NOTE :
1. The unit of resistance “ohm” is omitted. (K = 1000 ohm, M = Mage ohm).
2. All resistors are 1/16 watts, unless otherwise noted.
3. All capacitor are
µ
F, unless otherwise noted.
(P =
µµ
F).
VOLTAGE MEASUREMENT CONDITIONS :
1. Voltages in parenthesis measured with no signal.
2. Voltage without parenthesis measured with 3mV B & W or colour signal.
3. All the voltages in each point are measured with VTVM.
WAVE FORM MEASUREMENT CONDITIONS :
1. The colour bar generator signal of 1.0V peak applied at pin (41) of IC801.
2. Approximately 4V AGC bias.
DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE REPLACING PARTS. SEMICONDUCTOR HEAT SINKS SHOULD BE REGARDED AS POTENTIAL SHOCK HAZARDS WHEN THE CHASSIS IS OPERATING.
SAFETY NOTE :
1.
2.
21
!
Page 22
PWB A : MAIN UNIT
SCHEMATIC DIAGRAM
22
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PWB B : CRT UNIT
23
PWB C : HEADPHONE UNIT
A
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24
PWB E : SOUND CONTROL UNIT
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PWB A : MAIN UNIT (COMPONENT SIDE)
PRINTED WIRING BOARD ASSEMBLIES
25
Page 26
Z3Z3
R617R617
R624R624
R623R623
R618R618
R626R626
C439C439
RJ21RJ21
R458R458
R363R363
C453C453
RJ33RJ33
R362R362
R461R461
R366R366
R365R365
R433R433
R434R434
R435R435
RJ1RJ1
A2A2
Z2Z2
D202D202
RJ28RJ28
RJ27RJ27
C203C203
R202R202
R201R201
C205C205
R373R373
IC305IC305
IC401IC401
R374R374
IC403IC403
C436C436
C401C401
R353R353
Q803Q803
R846R846
R372R372RJ39RJ39
RJ19RJ19
RJ2RJ2
RJ6RJ6
R438R438
RJ9RJ9
R431R431
IC402IC402
R432R432
FDC2FDC2
C519R515R515C519
R520R520
R504R504
C518C518
IC1003IC1003
R437R437
RJ18RJ18
RJ12RJ12
RJ10RJ10
R1041R1041
D1041D1041
C1862C1862
C1864C1864
R1867R1867
C1863C1863
C1861C1861
IC1007IC1007
C212C212C1896C1896
R213R213
RJ11RJ11
R205R205
Q202Q202
RJ44C207C207RJ44
C213C213R209R209
R208R208
RJ5RJ5
R206R206
C209C209
R212R212
RJ3RJ3
Q201Q201
R211R211
C210C210RJ45RJ45
C208C208
R220R220
R830R830
R210R210
R207R207
RJ22RJ22
RJ20RJ20
R439R439
R440R440
RJ7RJ7
R441R441
Q1001Q1001
R1039R1039
R301R301
R1077R1077
R1059R1059
R1049R1049
D1089D1089
R1091R1091
R1033R1033
R1076R1076
R1096R1096
D1085D1085
R1047R1047
R1048R1048
R1038R1038
R1090R1090
R1034R1034
R1036R1036
R1037R1037
R1044R1044
R1046R1046
IC1001IC1001
R1074R1074
R1066R1066
R1032R1032
R1072R1072
R1043R1043
C1004C1004
C1015C1015
R528R528
RJ32RJ32
RJ31RJ31
RJ30RJ30
R801R801
RJ34RJ34
C1011C1011
R842R842
R1064R1064
R1065R1065
C1008C1008
C826C826
C1009C1009
C813C813
R1061R1061
R1055R1055
C757C757
D1086D1086
RJ25RJ25
R1855R1855C1856C1856
R1854R1854
R845R845
C832C832
C828C828
C830C830
R844R844
C831C831
C833C833
C821C821
R832R832
C815C815
C819C819
R814R814
R816R816
R812R812
R1063R1063
C823C823
R815R815
R817R817
Q804Q804
C814C814
R807R807
FDC3FDC3
Q801Q801
R1081R1081
Q604Q604
R714R714
Q701Q701
C717C717
R716R716
R715R715
R1802R1802
RJ29RJ29
Q702Q702
R709R709
R708R708
R719R719
R1895R1895
R1896R1896
R1852R1852
R1851R1851
R1853R1853
D810D810
C810C810
D811D811R804R804
C808C808
R818R818
D801D801
R805R805
D812D812
R806R806
C809C809
R843R843
R840R840
R803R803
R802R802
C806C806
C802C802
C804C804
IC801IC801
C847C847
C841C841
R833R833
C1867C1867
C839C839
R1856R1856
RJ43RJ43
C1869C1869
RJ42RJ42
RJ13RJ13
RJ26RJ26RJ4RJ4
C845C845
R835R835
R1850R1850
R1171R1171
IC1170IC1170
R1172R1172
R307R307
R303R303
C308C308
R315R315
R305R305
C313C313
R1078R1078
R1085R1085
R1087R1087
R821R821
R1849R1849
R827R827
Q805Q805
C3081C3081
IC3002IC3002
RJ24RJ24
R3009R3009
RJ23RJ23
B1B1
FDC1FDC1
R382R382
R381R381
R384R384
R383R383
R3006R3006
R1056R1056
Q1002Q1002
Q1072Q1072
R1079R1079
R1083R1083
Q1070Q1070
R1002R1002R1003R1003
R1009R1009
R1008R1008
R1007R1007
R1006R1006
R1024R1024
RJ14RJ14
RJ15RJ15
R1027R1027
RJ16RJ16
C1016C1016
RJ17RJ17
RJ8RJ8
RJ37RJ37
RJ35RJ35
R371R371
A1A1
R370R370
RJ38RJ38
Z1Z1
:
26
Page 27
PWB B : CRT UNIT
27
PWB C : HEADPHONE UNIT
A
C
B
D
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COMPONENT SIDE CHIP PART SIDE
A
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D
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COMPONENT SIDE
Page 28
28
PWB E : SOUND CONTROL UNIT
A
C
B
D
12345678
9
1
0
COMPONENT SIDE CHIP PART SIDE
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