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AKAI CT 2867 UNT
General Information Also Covers CT 2567 UNT CT 2865 UNT CT 2161 UNT CT 2565 UNT
1
Service Adjustments
Note! Before other adjustments U1 voltage must be adjusted. Display Note V.MID-POS. ............................. Adjust centre of the test picture vertical to ................................................. a centred pos. (bottom half is black). V.TOP-POS. ............................ Adjust top edge (bottom half is black). V.AMPL. .................................. Adjust bottom edge. H.SHIFT ................................... Adjust centre of the test picture horizontal ................................................. to a centred position. H.AMPL. .................................. Horizontal amplitude P.AMPL. ................................... Horizontal cushion P.TILT ....................................... Horizontal trapeze R.CORN. .................................. Corner correction (starting SPL21 R 02) S.COR. .................................... Vertical linearität (starting SPL21 R 02) GREEN .................................... See adj. "G2- and colour temperature" BLUE ....................................... See adj. "G2- and colour temperature" RED ......................................... See adj. "G2- and colour temperature" ACl ........................................... (ON/OFF)SPL70 EQUALIZER ............................ (ON/OFF)SPL70 OSD SHIFT IN VAR: .................................... (ON/OFF) starting SPL50 R 01 FRONT AV: .............................. (ON/OFF) LOUDNESS: ........................... (ON) C4 BIT CHECK: ...................... (ON) NICAM: .................................... (ON/OFF) CARRIER-MUTE: .................... (OFF) VT CHAR: ............................... West / East1 / West Turkey / East2 FLYB MODE: ........................... (ON=NTSC) as from SPL21 R02 AGC ......................................... See adjustment "AGC". ZOOM ...................................... (ON/OFF) CORING .................................. (ON/OFF) 1. Press the blue MENU button twice. 2. Activate TV-PROGR option by pressing the cursor button v or w . 3. Enter one of the mid range UHF channels by using the number buttons, e.g. ch. 38 (607.25 MHz). 4. Select the frequency tuning menu by pressing the green button. 5. Select AFC option and change it to ON by using the cursor buttons or . 6. Adjust the frequency to 607.25 MHz with ZL22 (even with other channels, always set to xxx.25 MHz). 7. Return to normal TV mode by pressing the TV button. Audio IF calibration 1. Feed in a test picture. 2. Connect an oscilloscope to pin 12 of TDA 2545. 3. Adjust for minimum picture content with the ZL02.
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Recommended Safety Parts
Item
RK 55 RK 56 RK 60 RK 72 RK 73 RO 30 CK 51 CK 52 CK 61 CO 01 CO 07 CO 30 CO 32 NE 50 FO 01 FO 02 TK 60 TK 60 (4800) TK 60 (4876) TO 30, 40 NE 50 SE 01 SE 01 XH 01 (CT2565/2865) 4) 28" 4) 25" 8) 25" 8) 28" 15) (CT2567/2867) 14) 25" 4364 2503 4364 2803 4588 0813 4588 0814 4131 4380 4774 0006 (CT2161) 15) 21" 19) 21" 4364 2104 4588 0811 4774 0006 7000 3707 PICTURE TUBE A59CCY13X01 PICTURE TUBE A66ECY13X01 DEGAUSSING COIL DEGAUSSING COIL MAINS CABLE 2,25M UK HIGH VOLTAGE CABLE TUBE90 Vid A51EFS83X191 DEGAUSSING COIL HIGH VOLTAGE CABLE 620MM UK POWER CORD + CONNECTOR 2,25m 14) 28" 18) 25" 18) 28" 4362 9071 4364 2511 4588 0813 4588 0814 4131 4380 4774 0006 TUBE VID A66EAS13X01 TUBE VIDAS9EAS13X01 DEGAUSSING COIL DEGAUSSING COIL MAINS CORD 2,25M UK HIGH VOLTAGE CABLE
Part No.
3151 4519 3151 4511 3722 2010 3151 4516 3151 4513 3156 0970 3345 0024 3345 0026 3324 0835 3345 0004 3324 0822 3261 0932 3261 0931 3684 1033 4375 1251 4157 0485 8681 7340 4536 0031 4536 0018 4523 1110 3684 1033 4121 0002 4193 0009 4155 4034
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Description
SRES 1 K 0,25WW SRES 2,2E 0,25W FOCUS G2 REGULATOR ES 100E 0,25W RES 10 E 0,25W RES 8,2M 0,54W SCAP 8,7NF1600V SCAP 1,8 NF1600V SCAP 27NF 400V CAP 0,33MF 275V CAP 0,1 MF 250V SCAP 2,2 NF 4KV SCAP 1 NF 4KV PHOTO COUPLE FUSE 2,5A T FUSE HOLDER ANODENCLIP 4MM DST ELDOR 1192.6002 NO 1/97 OST ELDOR 1192.6003 LINE TRANSFORMER TRANSFORMER OPTOTCDT 1020G MAINSWITCH SAVE PUSH CONN CRIPLET CRT SOCKET METALLO
Specifications
Mains power ........................................................................................................... 176-264 V Power consumption ................................................................................................ ca. 90 W Stand by ......................................................................................................................... 0,1 W ...................................................................................................................... 28"/71 cm (110°) Programme memory loc. ................................................................................................... 99 AV memory locations ........................................................................................................... 2 AV memory locations (CT-25/2867 UNT, CT-2867 UNT DPL) ................................................................................. 3 Sound output ........................................................................................ 2 x 6,5 W RMS (8 ) Dolby Surround: Surround channel Centre channel
mains isolated Connections: on the front panel ...................................................................................................................... 16 3,5 mm ................................................................................................................ AV (Cinch/Hosiden) Connections: on the rear panel Audio out: 0,5 V/1 k Scart 1/ Scart 2 ................................................................................... Audio in: 0,5 V/10 k ................................................................................................................. Video out: 1 V/75 ................................................................................................................... Video in: 1 V/75 ................................................................................................................ SVHS: Y/C (Scart 1) ...................................................................................................... RGB: 0,7 V/75 (Scart 1) OSCAR 5 Commander Aerial ................................................................................................................................ 75
X-ray regulations The picture tube type and the maximum permissible high-voltage ensure that the X-ray intensity within the set remains far below the permissible value. The high-voltage must not exceed 28 kV. The high voltage is within the permissible limits when the operating voltage of the horizontal deflection stage equals 150 V ± 0.5 V (110° 25"/28"), 130 V± 0.5V (90° 21") or 120 V± 0.5V (90° 17") at minimum beam current. During servicing, check and adjust this U1 voltage to the nominal value. By following the service adjustments, check and adjust this voltage to the nominal value with R080. Service mode Select the service mode by pressing the Mute, OK and TV buttons on the remote control unit. Use the cursor button v or w to select required adjustment and adjust it by using the cursor buttons and . Store into memory by pressing the red OK button. Return to normal TV mode by pressing the TV button.
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Chassis:
Warning! Service and repair work to be performed only in accordance with existing safety regulations.
7. Use a colour neutral picture and adjust the light areas in green, blue and red drives to white (lower the OSD valuel with the cursor button or . At least one of the level controls should be remain at 60. 8. Store by pressing the OK button. 9. Return to normal TV mode by pressing the TV button. AGC 1. Feed in a RF signal (70 dBµV) tuned on a mid range UHF channel and without sound carrier via the aerial input. 2. Set the TV set to the service mode (see "Service mode"). 3. Select the AGC-adjustment with the cursor button v or w. 4. Connect an oscilloscope (bandwidth > 50 MHz) to the IF output on the tuner (TL01 or TL02). 5. Press the yellow button on the remote control unit (OSD = OKAY). 6. Adjust the signal to 450 mVpp ± 50 mV. (with reference to the signals synchronizing peaks) with the cursor button or . 7. Store the value in the memory by pressing the red OK button. 8. Return to normal TV mode by pressing the TV button.
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G2 - and colour temperature 1. Set the TV set to the service mode (see "Service mode"). 2. Adjust the green, blue and red OSD values to 60 with the cursor button or 3. Set the G2 trimmer (RK60) to its centre position. 4. Adjust the brightness to normal level (black bar of the grey scale is black). 5. By using an oscilloscope (Probe 100:1) determine the highest black value at the picture-tube cathodes (R, G, B). 6. Adjust with G2 (RK60) the highest black value to 150 V.
U1 voltage 1. Set the contrast and brigthness to minimum. 2. Connect an universal voltmeter to the capacitor C043. 3. Adjust the U1 voltage to 150 V ± 0.5 V (110° 25"/28"), 130 V ± 0.5V (90° 21") or 120 V ± 0.5V (90° 17") with the trimmer R080 by black picture. Focus Adjust the focus to optimum with the focus trimmer (RK60). Other service adjustments Picture reference calibration
Specifications / Adjustments / Variable Components for Picture Tube / Dolby Module / SP BG/DK/I Chassis / SP BG/DK/I Chassis Cont'd SP BG/DK/I Chassis Waveforms / SP Multinorm Chassis / SP Multinorm Chassis Cont'd / SP Multinorm Chassis Waveforms / Safety Parts List
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TK 60 (4870,74,76) 4536 0032
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AKAI CT 2867 UNT
2
Dolby Module Diagram
Specifications / Adjustments / Variable Components for Picture Tube / Dolby Module / SP BG/DK/I Chassis / SP BG/DK/I Chassis Cont'd SP BG/DK/I Chassis Waveforms / SP Multinorm Chassis / SP Multinorm Chassis Cont'd / SP Multinorm Chassis Waveforms / Safety Parts List
AKAI CT 2867 UNT
Variable Components for Picture Tube
*POS U1 CO09 CS26 CK51 CK52 CK53 CK55 CKS6 CK61 CK65 LK5S LK61 LK65 RK02 RK06 RK50 RK58 RK63 RK65 RK70 RK80 RK85 RK88 RO19 RO21 RO42 RO43 RO44 RO75 Hotel R078 Hotel RS11 RS12 RS13 8514 RS20 RS25 8526 RS28 TK60 C.R.T. RH20 RH30 RH40 A59/66 EAF10X01 150V 220U 33N 8N7 1N5 120N 400N 33N 27N 4N7 227U 490UH 82U 383 10K 1R0 16K 66K 39R 1R0 150K 3M3 100K 2K7 0K36 15K 2K2 18K 27K 51K 59K 300R 300R 380 380 68K 560K 150K 10K M1015 board 2k2 2k2 2k2 A59/66 ECY13X01 150V 220U 15N 8N2 1N5 120N 300N 33N 27N 4N7 227U 480UH 82U 182 10K 1R0 16K 56K 39R 1R0 470K 2M2 100K 2K7 0K36 15K 2K2 18K 27K 51K 59K 220R 220R 4R7 4R7 68K 330K 100K M1015 2k2 2k2 2k2 A59/66 EAS13X01 150V 220U 33N 8N7 1N5 120N 400N 33N 27N 4N7 227U 490UH 82U 3R3 10K 1R0 16K 56K 39R 1R0 150K 3M3 220K 2K7 0K36 15K 2K2 18K 27K 51K 59K 300R 270R 380 380 100K 560K 150K 10K M1015 2k2 2k2 2k2 A59/66 ECF20X12 150V 220U 33N 8N7 1N5 120N 360N 33N 27N 4N7 227U 490UH 82U 3R3 10K 1R0 16K 56K 39R 1R0 150K 2M2 100K 2K7 0K36 15K 2K2 18K 51K 220R 220R 2R0 2R0 68K 560K 82K 10K M1015 2k2 2k2 2k2 A51 ECQ10X01 130V 150U 1SN 6N8 1N5 120N 360N 47N 4N7 227U 360UH 75U 2R7 330K 1R0 16K 22R 1R0 150K 3M3 100K 3K6 0K43 15K 100K 15K 3K3 12K 51K 59K 220R 220R 2R0 68K 560K 100K 10K M1009 2k2 2k2 2k2 A51 EFS43X191 130V 150U 15N 6N2 1N5 47N 360N 47N 4N7 227U 360UH 75U 1R2 330K 1R0 16K 22R 1R0 150K 3M3 100K 3K6 0K43 15K 100K 15K 3K3 12K 51K 59K 220R 220R 383 68K 560K 100K 100K M1009 2k2 2k2 2k2 A51 EBV13X01 130V 150U 15N 5N6 1N5 120N 360N 27N 4N7 227U 490UH 75U 182 330K 1R5 16K 22R 0R0 150K 3M3 100K 3K6 0K43 15K 100K 15K 3K3 12K 51K 59K 220R 220R bR 68K 560K 100K 100K M1009 2k2 2k2 2k2 A41 EAM40X01 120V 150U 15N 4N7 2N2 120N 360N 33N 18N 15N 227U 610UH 25U 182 330K 1R5 20K 62R 0R0 150K 3M3 220K 3K9 0K47 12K 820K 12K 2K2 51K 59K 220R 220R 68K 560K 100K 100K M1016 3k0 3k0 3k0 A48 EEV13X01 120V 150U 15N 6N2 2N2 120N 220N+270N 33N 18N 15N 227U 610UH 25U R39 330K 185 16K 628 ORG 150K 3M3 100K 3K9 0K47 12K 820K 12K 2K2 51K 59K 220R 220R 68K 560K 100K 100K M1016 2k2 2k2 2k2
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SP BG/DK/I Chassis Diagram
Waveforms
Specifications / Adjustments / Variable Components for Picture Tube / Dolby Module / SP BG/DK/I Chassis / SP BG/DK/I Chassis Cont'd SP BG/DK/I Chassis Waveforms / SP Multinorm Chassis / SP Multinorm Chassis Cont'd / SP Multinorm Chassis Waveforms / Safety Parts List
AKAI CT 2867 UNT
4
SP BG/DK/I Chassis Diagram Cont'd
Specifications / Adjustments / Variable Components for Picture Tube / Dolby Module / SP BG/DK/I Chassis / SP BG/DK/I Chassis Cont'd SP BG/DK/I Chassis Waveforms / SP Multinorm Chassis / SP Multinorm Chassis Cont'd / SP Multinorm Chassis Waveforms / Safety Parts List
AKAI CT 2867 UNT
Variable Components for Picture Tube
*POS U1 CO09 CS26 CK51 CK52 CK53 CKSS CK56 CK61 CK65 LK55 LK61 LK65 RK02 RK06 RK50 RK58 RK63 RK70 K80 RK85 RK88 RO19 RO21 RO42 RO43 RO44 RO75 Hotel RO78 Hotel RS11 RS12 RS13 RS20 RS25 RS26 RS28 TK60 CRT board RH20 RH30 RH40 A59/66 EAF10X01 150V 220U 33N 8N7 1N5 120N 400N 33N 27N 4N7 227U 490UH 82U 383 10K 180 16K 56K 1R0 150K 3M3 100K 2K7 0K36 15K 2K2 18K 27K 51K 59K 300R 300R 3R0 68K 560K 150K 10K M1015 2k2 2k2 2k2 A59/66 ECY13X01 150V 220U 15N 8N2 1N5 120N 300N 33N 27N 4N7 227U 490UH 82U 182 10K 180 16K 56K 1R0 470K 2M2 100K 2K7 0K36 15K 2K2 18K 27K 51K 59K 220R 220R 4R7 68K 330K 100K M1015 2k2 2k2 2k2 A59/66 EAS13X01 150V 220U 33N 8N7 1N5 120N 400N 33N 27N 4N7 227U 490UH 82U 383 10K 1R0 16K 56K 1R0 150K 3M3 220K 2K7 0K36 15K 2K2 18K 27K 51K 59K 300R 270R 3R0 100K 560K 150K 10K M1015 2k2 2k2 2k2 A59/66 ECF20X12 150V 220U 33N 8N7 1N5 120N 360N 33N 27N 4N7 227U 490UH 82U 383 10K 1R0 16K 56K 1R0 150K 2M2 100K 2K7 0K36 15K 2K2 18K 12K 51K 59K 220R 220R 2R0 68K 560K 82K 10K M1015 2k2 2k2 2k2 A51 ECQ10X01 130V 150U 1SN 6N8 1N5 120N 360N 47N 4N7 227U 360UH 75U 287 330K 1R0 16K 1R0 150K 3M3 100K 3K6 0K43 15K 100K 15K 3K3 12K 51K 59K 220R 220R 2R0 68K 560K 100K 10K M1009 2k2 2k2 2k2 A51 EFS43X191 130V 150U 15N 6N2 1N5 47N 360N 47N 4N7 227U 360UH 75U 182 330K 180 16K 1R0 150K 3M3 100K 3K6 0K43 15K 100K 15K 3K3 12K 51K 59K 220R 220R 3R3 68K 560K 100K 100K M1009 2k2 2k2 2k2 A51 EBV13X01 130 150U 15N 5N6 1N5 120N 360N 27N 4N7 227U 490UH 75U 182 330K 180 16K 0R0 150K 3M3 100K 3K6 0K43 15K 100K 15K 3K3 2K2 51K 59K 220R 220R 10R 68K 560K 100K 100K M1009 2k2 2k2 2k2 A41 EAM40X01 120V 150U 15N 4N7 2N2 120N 360N 33N 18N 15N 227U 610UH 25U 182 330K 185 20K 0R0 150K 3M3 220K 3K9 0K47 12K 820K 12K 2K2 51K 59K 220R 220R 68K 560K 100K 100K M1016 3kG 3kG 3kG A48 EEV13X01 120V 150U 15N 6N2 2N2 120N 220N+270N 33N 18N 15N 227U 610UH 25U 839 330K 185 16K 0R0 150K 3M3 100K 3K9 0K47 12K 820K 12K 51K 220R 220R 68K 560K 100K 100K M1016 2k2 2k2 2k2
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SP Multinorm Chassis Diagram
Specifications / Adjustments / Variable Components for Picture Tube / Dolby Module / SP BG/DK/I Chassis / SP BG/DK/I Chassis Cont'd SP BG/DK/I Chassis Waveforms / SP Multinorm Chassis / SP Multinorm Chassis Cont'd / SP Multinorm Chassis Waveforms / Safety Parts List
AKAI CT 2867 UNT
6
SP Multinorm Chassis Diagram Cont'd
Specifications / Adjustments / Variable Components for Picture Tube / Dolby Module / SP BG/DK/I Chassis / SP BG/DK/I Chassis Cont'd SP BG/DK/I Chassis Waveforms / SP Multinorm Chassis / SP Multinorm Chassis Cont'd / SP Multinorm Chassis Waveforms / Safety Parts List