Color Television Chassis L04.6HU CA G_16430_000.eps 260406 Contents Page 1. Technical Specifications, Connections, and Chassis Overview 2 2. Safety Instructions, Warnings, and Notes 4 3. Directions for Use 6 4. Mechanical Instructions 7 5. Service Modes, Error Codes, and Fault Finding 10 6.
EN 2 1. Technical Specifications, Connections, and Chassis Overview L04.6HU CA 1. Technical Specifications, Connections, and Chassis Overview 1.2 Index of this chapter: 1.1 Technical Specifications 1.2 Connections 1.3 Chassis Overview Note: The following connector color abbreviations are used (acc. to DIN/IEC 757): Bk= Black, Bu= Blue, Gn= Green, Gy= Grey, Rd= Red, Wh= White, Ye= Yellow. Notes: • Figures can deviate due to the different set executions.
Technical Specifications, Connections, and Chassis Overview 0.5 VRMS / 10 kohm jq AV2 - Cinch: Video CVBS - In, Audio - In Ye - Video CVBS 1 VPP / 75 ohm Wh - Audio L 0.5 VRMS / 10 kohm Rd - Audio R 0.5 VRMS / 10 kohm jq jq jq Rd - Audio R AV2 - SVHS (Hosiden): Video Y/C - In 1 - Ground Y Gnd 2 - Ground C Gnd 1.3 H H 3 4 1.2.2 L04.6HU CA - Video Y - Video C 1. EN 3 j j 1 VPP / 75 ohm 0.
EN 4 2. L04.6HU CA Safety Instructions, Warnings, and Notes 2. Safety Instructions, Warnings, and Notes 1. Perform the 'general repair instruction' noted above. 2. Clean the power supply and deflection circuitry on the chassis. 3. Clean the picture tube panel and the neck of the picture tube. Index of this chapter: 2.1 Safety Instructions 2.2 Maintenance Instructions 2.3 Warnings 2.4 Notes 2.1 Safety Instructions 2.
Safety Instructions, Warnings, and Notes • • • 2.4.2 Where necessary, measure the waveforms and voltages with (D) and without (E) aerial signal. Measure the voltages in the power supply section both in normal operation (G) and in standby (F). These values are indicated by means of the appropriate symbols. The picture tube panel has printed spark gaps. Each spark gap is connected between an electrode of the picture tube and the Aquadag coating.
EN 6 3. L04.6HU CA Directions for Use 3. Directions for Use You can download this information from the following websites: http://www.philips.com/support http://www.p4c.philips.
Mechanical Instructions L04.6HU CA 4. EN 7 4. Mechanical Instructions 1. Disconnect the degaussing coil [1]. 2. Release the two fixation clamps (at the mid left and mid right side of the bracket), and remove the bracket from the bottom tray, by pulling it backwards [2]. 3. Turn the chassis tray 90 degrees counter clockwise. 4. Move the panel bracket somewhat to the left and flip it 90 degrees [3], with the components towards the CRT. 5. Turn the panel bracket with the rear I/O toward the CRT. 6.
EN 8 4.3.3 4. Mechanical Instructions L04.6HU CA 4.3.5 ATSC Module/Panel Removal Interface Module/Panel Removal 3 3 2 1 2 F_15760_009.eps 151105 1 Figure 4-4 ATSC bracket G_16430_004.eps 210406 1. Disconnect all cables that lead to the module. 2. Unlock the clip [1] at the left side of the bracket and pull out the ATSC module [2]. 3. Release the fixation clips that hold the panel [3] and take out the panel (it hinges at the bottom). 4.3.
Mechanical Instructions 4.3.6 SP/LS Module/Panel Removal 1 G_16430_006.eps 210406 Figure 4-8 SP/LS Module 1. Loosen the screw [1] that fixes the bracket with the Interface module to the TV chassis, and position the bracket in such a way that it no longer blocks access to the SP/LS module (see Figure “Bracket with Interface Module”). 2. Unlock the connector [1] that fixes the SP/LS module to the chassis, and take out the SP/LS module (see Figure “SP/ LS Module”). 3.
EN 10 5. L04.6HU CA Service Modes, Error Codes, and Fault Finding 5. Service Modes, Error Codes, and Fault Finding Index of this chapter: 5.1 Test Points 5.2 Service Modes 5.3 ComPair 5.4 Error Codes 5.5 The Blinking LED Procedure 5.6 Protections 5.7 Fault Finding and Repair Tips 5.1 5.2 Software version. Option settings. Error buffer reading and erasing. Software alignments. This chassis is equipped with test points in the service printing.
Service Modes, Error Codes, and Fault Finding 5. Option bytes Shows the actual settings of the options; seven codes possible. 6. Clear Erases the contents of the error buffer. Select the CLEAR menu item and press the MENU RIGHT key. The content of the error buffer is cleared 7. ISP Mode Can be used to switch on the television to ISP mode (for uploading software) 8. Options To set the Option Bytes. See chapter 8 for a detailed description. 9. Deflection To align the Deflection.
EN 12 5. Service Modes, Error Codes, and Fault Finding L04.6HU CA the Force/SearchMan electronic manual of the defective chassis, schematics and PWBs are only a mouse click away. 5.3.2 The ComPair fault finding program is able to determine the problem of the defective television. ComPair can gather diagnostic information in two ways: • Automatically (by communicating with the television): ComPair can automatically read out the contents of the entire error buffer. Diagnosis is done on I2C/UART level.
Service Modes, Error Codes, and Fault Finding L04.6HU CA 5.
Service Modes, Error Codes, and Fault Finding L04.6HU CA Addr. (DEC) Bit 27HT7210D/27 (HEX) 5. 27HT4000D/27 (HEX) EN 14 OIF (IF-PLL Offset) 68 26 26 H60 (60 Hz Horizontal Shift) 150 00 00 PWL (Peak White Limit) 74 60 Hz Vertical amplitude 152 00 NVM_CVI_BLOR 71 24 24 NVM_CVI_BLOG 72 1F 1F TXT Brightness 128 20 20 V60 offset (60Hz Vert. Ampl.
Service Modes, Error Codes, and Fault Finding 5.7.4 L04.6HU CA EN 15 Blank Screen Deflection One Thin Vertical Line Quick check: • Set in protection mode. • LED blinking with error “3”. Blank Screen Check Vg2 (fine tune) One Thin Vertical Line LED Blinking Ok Not Ok Check all connection and peripheral at Deflection Circuit in place Picture appears? Picture not appearing Check Beam Current Limit (voltage is 1.
EN 16 5. Service Modes, Error Codes, and Fault Finding L04.6HU CA 6. If Tuner IF is present and yet still no picture in RF mode, go to Video Processing troubleshooting section.
Service Modes, Error Codes, and Fault Finding 5.7.7 Controller Below are some guidelines for troubleshooting of the Micro Controller function. Normally Micro Controller should be checked when there is a problem of startup. 1. Check that both +3.3 V_dc and +1.8 V_dc are present. 2. Check that crystal oscillator is working. 3. Check that Power Good signal is at “high” logic, normal operation. 4. Check that Hercules is not in standby mode. Pin 15 of Hercules should be 0 V_dc. 5.
EN 18 5. L04.
Block Diagrams, Test Point Overviews, and Waveforms L04.6HU CA 6. 19 6.
Block Diagrams, Test Point Overviews, and Waveforms L04.6HU CA 6. 20 Block Diagram Supply and Deflection SUPPLY AND DEFLECTION DEFLECTION t 4 3 1 ENERGIZING CIRCUIT (optional) V_DG 7200-H (SYNC) 112 EHTinfo 2 3507 1 A2 7541 2240 Degaussing Coil 1503 113 A2 LINE + FRAME DEFLECTION A2 Vguard A4 HERCULES 1504 2 3232 A1 POWER SUPPLY Vbatt +6VA LINE 116 7408 1505 5500 : 5501 1500 VERTICAL GUARD DETECTOR VIDEO IDENT 6500 AC F508 T4E R.G.B. BLANKING TO RGB PROC.
Block Diagrams, Test Point Overviews, and Waveforms L04.6HU CA 6.
Block Diagrams, Test Point Overviews, and Waveforms L04.6HU CA 6. 22 Block Diagram Video VIDEO J1 A5 INTERFACE MODULE (VIDEO PART) - for “SYSTEM” version only - 1219 1219 VIDEO INTERFACE 1 6 N.C. 2 7 N.C.
Block Diagrams, Test Point Overviews, and Waveforms L04.6HU CA 6. 23 Testpoint Overview CRT Panel SERVICE TEST POINT 3139 123 5674.3 F_15760_039.
Block Diagrams, Test Point Overviews, and Waveforms L04.6HU CA 6.
Block Diagrams, Test Point Overviews, and Waveforms L04.6HU CA 6. 25 I2C and Supply Voltage Overview SUPPLY LINES DIAGRAM A2 LINE + FRAME DEFLECTION A1 POWER SUPPLY 3 4 2 1 1503 7541 B1 CRT ENERGIZING CIRCUIT (optional) V_DG Vbatt 5445 5402 SUPPLY PRIMARY SIDE 7405 EHT 17 8 18 4 14 5 13 3 5551 6551 5552 A4 Vbatt A7 AUDIO_AMPLIFIER 5562 6563 1543 -Vaudio +Vaudio 7 AUDIO OUTPUT A4 LINE OUTPUT CIRCUIT + E/W CORR.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 26 7. Circuit Diagrams and PWB Layouts Mono Carrier: Power Supply 1 2 3 5 6 POWER SUPPLY 3 RES 2507 2505 2n2 6572 I575 3563 6564 220R BAS316 POWER-UP RESET + 10X + 100p 2K2 2549 3537 4n7 2533 1 1u0 4535 * 8V2 10n 2572 +6VA +6V 1m0 6.
Circuit Diagrams and PWB Layouts L04.6HU CA 7.
Circuit Diagrams and PWB Layouts 4 5 6 F402 I445 I432 22R F414 F415 3452 * * 22K I424 4492 3492 RES VDRA A4 I415 +9V 100R 3493 3V3 4K7 3498 J 56n 2428 7484 BC847B I434 0V2 1453 RES RES 2425 1V3 10K RES 3483 3K3 3494 3482 BAV21WS *6483 100n 3481 RGP10D * 6454 * 15K 3474 1u0 3437 -0V8 2K0 6458 7454 BC847B I471 2464 -11V8 G 4437 7453 BD136 3470 -1V9 22R 2469 7452 BF422 -1V1 F458 I472 -1V6 1451 1 2 -12V4 220n VERTICAL DEFLECTION COIL H F459 3461
Circuit Diagrams and PWB Layouts Mono Carrier: Diversity Table for [A2] 1 2 3 4 L04.6HU CA 5 7.
Circuit Diagrams and PWB Layouts Mono Carrier: Tuner IF 1 2 4 3 7.
4K7 3282 F270 3283 4K7 I235 4K7 3279 GND121 4K7 3262 0V0 A5 100R 3264 C A5 3265 100R D A5 E A5 100u 10V 2V 7209 BSH103 GND_1 I204 4 2V 2V6 1R0 27K 3210 F200 1R0 7203 2V9 GND_1 I201 BC327-25 7201-2 7201-1 IMX1 3 IMX1 2V 2 5 2V 2V6 for ITV only 6201 7202 22n 3203 150K F 7204 BC327-25 2V8 6 2V G 2V 12V I224 +1.8V_A I225 F209 5K6 3296 +1.
Circuit Diagrams and PWB Layouts Mono Carrier: Features & Connectivity 2 1 3 A L04.6HU CA 4 7. 5 32 6 8 7 9 10 12 11 FEATURES & CONNECTIVITIES A5 13 A5 A 1212 INTF_U_OUT F225 INTF_Y_OUT F226 A4 3616 INTF_Pb|BLUE_IN 100R 3617 A4 3618 100R INTF_Pr|RED_IN 47u 16V A4 GND_1 F216 F250 3619 +3.
Circuit Diagrams and PWB Layouts L04.6HU CA 7.
Circuit Diagrams and PWB Layouts L04.6HU CA 7.
Circuit Diagrams and PWB Layouts Mono Carrier: Rear I/O Cinch 2 3 1 4 5 7.
Circuit Diagrams and PWB Layouts L04.6HU CA 7.
Circuit Diagrams and PWB Layouts L04.6HU CA 7.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 38 Layout Mono Carrier: (Top Side) 1000 1001 1002 1003 1004 1005 1010 1011 1012 1013 1137 E7 E5 E5 E5 E7 E7 E7 E7 E6 E7 C7 1138 1204 1205 1206 1207 1208 1212 1213 1219 1220 1221 E7 C5 D5 D4 E6 D6 C6 D5 C7 E4 C5 1222 1223 1227 1228 1229 1230 1234 1236 1237 1240 1241 3139 123 5673.
Circuit Diagrams and PWB Layouts L04.6HU CA 7.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 40 Layout Mono Carrier (Part 1 Bottom Side) Part 1 F_15760_022a.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 41 Layout Mono Carrier (Part 2 Bottom Side) Part 2 F_15760_022b.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 42 Layout Mono Carrier (Part 3 Bottom Side) Part 3 F_15760_022c.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 43 Layout Mono Carrier (Part 4 Bottom Side) Part 4 F_15760_022d.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 44 ATSC Panel: Power 5 ATSC2 4 3 2 1 POWER ATSC2 10VDC E-L5973D DC-DC CONVERTOR,2.5A U200 8 VCC 2 SYNC 4 + CE200 + CE201 CB200 470UF_16V 10UF_50V 0.1uF ELEC_DIP 8X11.5 ELEC_DIP 5x11 0603 20% 5mm pitch 20% 2.5mm pitch X7R,K 1C-YXA-470-M-TA-8x11.5 EKM-106-M-1H-5-11-TU C200 220pF 0603 NPO,J 5VDC VREF OUT 1 FB 5 L200 33UH 12x12 20%, 2.1A, 0.057Rdc MSCDRI-125-330-M L203 4.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 45 ATSC Panel: Reset, Pads, Spade Lug, I2C EEPROM 5 ATSC3 4 3 2 RESET, PADS, SPADE LUG, I2C EEP-ROM ATSC3 Reset Cir D 1 cuit D I2C EEP-ROM 3V3DC 3V3DC 3V3DC U300 CAT811TTBI-T CB300 0.
Circuit Diagrams and PWB Layouts L04.6HU CA 7.
Circuit Diagrams and PWB Layouts L04.6HU CA 7.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 48 ATSC Panel: Tuner 5 4 3 2 1 TUNER & OREN CASCADE DEMODULATOR ATSC6 ATSC6 +5VT1 don`t stuff TU601 C650 X7R,K FB608 MLB-201209-012 0P-N2 CB600 0.1uF 0603 X7R,K 0 C603 22pF 0603 NPO,K IF_AGC TD1336OZ/FGHP C600 10nF 0603 X7R,K R617 75 0603 FB603 0603 FB604 0603 + C601 47UF_16V 100pF ELEC_DIP 5X11 0603 20% 2.5mm pitch NPO,5% 1C-YXA-47-M-T1-5x11 + CE600 10UF_50V ELEC_DIP 5X11 20% 2.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 49 ATSC Panel: Connectors 5 ATSC7 4 3 2 1 CONNECTORS Super I/O ATSC7 TP700 U69D 1 U700 R732 5% 3V3DC 0 0603 UART_SW 4 7 9 12 1A 2A 3A 4A 1 S 16 R733 5% 5VDC CB710 0.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 50 ATSC Panel: Video Out 5 4 3 2 1 VIDEO OUT ATSC8 ATSC8 U69G Component Video AVID_PR D PR / RED G17 R801 75 0603 1% AVID_Y D Don`t stuff Y / GREEN H17 R802 75 0603 1% DAC Gain PR / RED R821 5% 0 0603 PR Y / GREEN R822 5% 0 0603 Y PB / BLUE R823 5% 0 0603 PB Don`t stuff Don`t stuff AVID_PB J17 TP802 OSDP K16 R803 75 0603 1% 5VDC FB800 MLB-201209-0120P-N2 Don`t stuff C HSYNC VSYNC R807 R808 27 27 TP801 CB826 0.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 51 ATSC Panel: Audio Output 5 4 3 2 1 AUDIO OUTPUT ATSC9 ATSC9 AUDP 10VDC R960 5% + CE917 470UF_16V ELEC_DIP 8X11.5 20% 5mm pitch Low ESR NXC 470uF16V AUDP (DDX Audio Out Left) S/PDIF T1 4.75K 0603 1% 1 2 C907 150pF 0603 NPO,J 4.75K 0603 1% R916 AUDP 4.75K 0603 1% R928 1% C911 7.5K 0603 150pF 0603 NPO,J don`t stuf (DDX Audio Out Right) 1 C910 150pF 0603 NPO,J IEC958 DDXRA R922 4.75K 0603 1% R924 4.
Circuit Diagrams and PWB Layouts L04.6HU CA 7.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 53 ATSC Panel: YUV Converter 3 2 YUV CONVERTER R1103 100K 0603 1% R1100 75 0603 1% CE1100 C1103 22pF 0603 NPO,K CB1102 0.1uF 0603 X7R,K 10VDC ATSC11 MLB-201209-0120P-N2 CE1101 + 220UF_16V ELEC_DIP 6.3X11 20% 5mm pitch EKM-227-M-1C-E11-TU D TR1101 BC857B 3 1 FB1100 0603 MLB-160808-0120A-N2 C1102 390pF 0603 NPO,5% FB1103 R1105 820 0603 1% 1 TR1100 BC847B 1 P1212 R1101 1uF50V 75 0603 ELEC_DIP 5X11 1% 20% 2.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 54 Layout ATSC Panel (Top Side) 3139 267 2819.1 Layout ATSC Panel (Bottom Side) G_16430_024.eps 100506 3139 267 2819.1 G_16430_025.
Circuit Diagrams and PWB Layouts CRT Panel 1 3 4 7. 55 6 5 8 7 CRT PANEL B1 ITEM 3328 3329 3330 3337 4328 4329 4330 4337 5351 9351 9 I357 3356 B1 12 13 ROW THE REST RGB+DISPL-29FS_IN 100R 100R 100R 100R 100R 100R ------------------JMP IND FXD LAL04A 22U PM10 --JMP JMP B EHTb 11 10 B1 A B AQUADAG WIRE 1332 10R +200VA 0330 MECHPART 100R 140V I333 OUT2 8 BC2 3335 140V I334 100R Vref 2.
Circuit Diagrams and PWB Layouts L04.6HU CA 7.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 57 Layout CRT Panel (Top Side) 3139 123 5674.3 F_15760_025.
Circuit Diagrams and PWB Layouts Side AV + Headphone Panel 3 1 2 4 5 7.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 59 Layout Side AV + Headphone Panel (Top Side) 1232 A4 1250 A3 1251 A2 1252 A1 1254 A3 1277 A2 1278 A4 1279 A4 2171 A1 2172 A2 2173 A3 2174 A2 2175 A2 2180 A1 3150 A2 3151 A2 3152 A3 3153 A3 3154 A1 3155 A1 3156 A4 3157 A4 3158 A1 3159 A1 3160 A1 6161 A1 9152 A3 Personal Notes: 9175 A2 9180 A1 9181 A1 F_15760_028.eps 161105 3139 123 5718.1 Layout Side AV + Headphone Panel (Bottom Side) 2176 A1 3139 123 5718.
Circuit Diagrams and PWB Layouts L04.6HU CA 7.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 61 SP/LS Module (NA-LA) I1 SP/LS MODULE (NA-LA) +5V R6 100R R7 100R R2 10K +5V R5 100R R3 U1 1 Data_in 2 +5V 3 Data_out 4 Gnd 5 IR_data 6 +5V D6 C6V8 R11 10K R13 10K 1259 D4 C6V8 100R D5 C6V8 2 2 1 2 2 1 R20 1 1 Q9 BC857B R33 0R 47R D9 C6V8 Q6 BC847B R21 1K0 R23 Q7 BC847B 100K 1 Data_out 2 Data_i n 3 Cl ock 4 Gnd 5 IR_out 6 +3.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 62 Layout SP/LS Module (NA-LA) (Top Side) 3139 123 6155.1 Layout SP/LS Module (NA-LA) (Bottom Side) G_16430_020.eps 050506 3139 123 6155.1 G_16430_021.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 63 Interface Module J1 INTERFACE MODULE +3V3 +5V +12V N N Y 4012 Y N N +5V 3700 4K7 +5V 1 1K 3748 150K 3 PRLL5817 +5V 4013 0R0 6708 PRLL5817 3760 10K 3749 2 AGND 1 10K 3758 10K 100n 7718 BC847B3 3761 2704 1u 2 +3V3 2717 4u7 3747 10K 6707 PRLL5 817 2 7717 BC847B 3759 1K 2718 6.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. 64 Layout Interface Module (Top Side) 3139 123 6164.1 Layout Interface Module (Bottom Side) G_16430_022.eps 050506 3139 123 6164.1 G_16430_023.
Circuit Diagrams and PWB Layouts L04.6HU CA 7.
Circuit Diagrams and PWB Layouts L04.6HU CA 7. Layout Main Switch Panel (For SL5 Styling) (Top Side) Layout Main Switch Panel (For SL5 Styling) (Bottom Side) 0201 0202 0241 0242 1002 1003 1004 1005 1006 1031 1032 1693 2001 2003 2030 3001 3007 3010 3011 3013 3014 3015 3016 3017 3018 3019 3020 3030 3031 3032 6001 6002 6003 6004 6006 6007 9010 9011 9013 9015 9017 9019 9020 9031 9032 9040 9041 9043 9044 9045 9046 9047 9048 3139 123 6015.3 F_15760_031.
Alignments L04.6HU CA 8. EN 67 8. Alignments 8.2.1 Index of this chapter: 8.1 General Alignment Conditions 8.2 Hardware Alignments 8.3 Software Alignments and Settings 1. Activate the SAM. 2. Go to the WHITE TONE sub menu. 3. Set the values of NORMAL RED, GREEN, and BLUE to “32”. 4. Go, via the MENU key, to the normal user menu and set 5. SATURATION/COLOR to “0”. 6. CONTRAST to “0”. 7. BRIGHTNESS to minimum (OSD just visible). 8. Return to the SAM via the MENU key. 9.
EN 68 8.3 8. Alignments L04.6HU CA Software Alignments and Settings S Options . OP1 34 . OP2 4 . OP3 161 . OP4 9 . OP5 117 . OP6 Remarks: 0 . LOAD DEFAULT type 062596 M to to enter > press standby to exit 80 L06HU1 0.5D S ERR 0 0 0 0 0 OP 34 4 161 9 60 117 0 S DEFLECTION HRM SW H3.03B . CLEAR . ISP MODE . AKB CLEARED . BRIGHTNESS OFF . CONTRAST ON ||||||----- 31 ||||||----- 31 . OPTIONS . DEFLECTION . TUNER . WHITE TONE . GEOMETRY . 60HZ OFFSET S TUNER . IFPLL 38 .
Alignments Enter the Service Alignment Mode (see also chapter 5 “Service Modes, ....”). The SAM menu will now appear on the screen. Select one of the following alignments: • Options • Tuner • White Tone • Geometry • Audio 8.3.1 Options Options are used to control the presence/absence of certain features and hardware. How to change an Option Byte An Option Byte represents a number of different options. Changing these bytes directly, makes it possible to set all options very fast.
EN 70 8. Alignments L04.
Alignments L04.6HU CA 8.
EN 72 8.3.2 8. L04.6HU CA Alignments Tuner Note: Described alignments are only necessary when the NVM (item 7601) is replaced. IF PLL This adjustment is auto-aligned. Therefore, no action is required. AGC (AGC take over point) 1. Set the external pattern generator to a color bar video signal and connect the RF output to aerial input. Set amplitude to 10 mV and set frequency to 61.25 MHz (channel 3). 2. Connect a DC multimeter to pin 1 of the tuner (item 1000 on the main panel). 3. Activate the SAM. 4.
Alignments Horizontal • Horizontal Parallelogram (HP). Align straight vertical lines in the top and the bottom; vertical rotation around the center. • Horizontal Bow (HB). Align straight horizontal lines in the top and the bottom; horizontal rotation around the center. • Horizontal Shift (HS). Align the horizontal center of the picture to the horizontal center of the CRT. • East West Width (EW). Align the picture width until the complete test pattern is visible. • East West Parabola (PW).
EN 74 9. Circuit Descriptions, List of Abbreviations, and IC Data Sheets L04.6HU CA 9. Circuit Descriptions, List of Abbreviations, and IC Data Sheets Notes: • Only new circuits compared to the L04 chassis are described in this chapter. For the other circuit descriptions, see the L04 manual. • Figures can deviate slightly from the actual situation, due to different set executions. • For a good understanding of the following circuit descriptions, please use the diagrams in sections “Block Diagrams, ...
Circuit Descriptions, List of Abbreviations, and IC Data Sheets 9. EN 75 the secondary side of the power supply and the rest of the chassis. the settings for favorite stations, customer-preferred settings, and service / factory data. The on-screen graphics and closed caption decoding are done within the microprocessor where they are added to the main signal. The chassis uses a Switching Mode Power Supply (SMPS) for the main voltage source.
EN 76 9. Circuit Descriptions, List of Abbreviations, and IC Data Sheets L04.6HU CA Connector P701 1 Tx 3.3V TTL (RS232 Tx for Service port) 2 GND GND 3 Rx 3.3V TTL (RS232 Rx for Service port) 9.3 Supply Architecture 9.3.1 Block Diagram SWITCH FILTER & MH COIL Vbatt ( To def lection ) RECTIF IER -Vaudio MAINS SMPS +Vaud io Stdby_Con (From Hercules) +3.3V ( To Hercules) AUX SMPS +12V (To ATSC panel) DEGAUSS RELAY F_15760_041.
Circuit Descriptions, List of Abbreviations, and IC Data Sheets B (Hercules Port) This port is used to switch “on” the +12V of the ATSC panel. It is logic “High” (3.3V) under normal operation and in Semi Stand-by of the TV, and “Low” (0V) during Standby. 9.4 9.5 2CS ACI ADC AFC “STANDBY” Keypad, Remote Controller, Timer, I2C. Plug out AC Power cable Protection circuit Plug in/out AC Power cable “OFF” “PROTECTION” “ON” F_15760_042.
EN 78 9. IIC ITV LATAM LED L/L' LS M/N NC NICAM NTSC NVM OB OC OP OSD PAL PCB PLL 9.6 IC Data Sheets Not applicable L04.6HU CA Circuit Descriptions, List of Abbreviations, and IC Data Sheets Integrated IC bus Institutional TV Latin American countries like Brazil, Argentina, etc. Light Emitting Diode Monochrome TV system. Sound carrier distance is 6.5 MHz. L' is Band I, L is all bands except for Band I Large Screen or Loudspeaker Monochrome TV system. Sound carrier distance is 4.
Spare Parts List 10. Spare Parts List Not available at the time of publishing L04.6HU CA 10.
EN 80 11. L04.6HU CA 11. Revision List Manual xxxx xxx xxxx.0 • First release.