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HD/SD PERSONAL VIDEO RECORDER & RECEIVER WITH GEMSTAR SERVICE MANUAL MODEL : HCS6000A(LST-4600A) CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. MAY, 2004 P/NO : 3829R Printed in Korea...
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SECTION 1 SUMMARY CONTENTS INTRODUCTION ......................1-2 PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS....1-3 SERVICING PRECAUTIONS..................1-4 SPECIFICATIONS .....................1-5 LOCATION OF CUSTOMER CONTROLS ...............1-7...
INTRODUCTION - Digital/Analog broadcasting recorder/receiver [HD/SD PERSONAL VIDEO RECORDER & RECEIVER] or PVR(Personal Video Recorder)-STB(Set-Top Box) receives the ground wave HD Digital broadcasting pro- gram /Analog NTSC or Cable broadcasting program and saves a video and audio signal at a HDD with a specific form or offers additional related services..
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS IMPORTANT SAFETY NOTICE A.C. Voltmeter This manual was prepared for use only by properly trained audio-video service technicians. When servicing this product, under no circumstances should the original design be modified or altered without permission from Zenith Electronics Corporation.
SERVICING PRECAUTIONS CAUTION: Before servicing the HD/SD PERSONAL VIDEO Electrostatically Sensitive (ES) Devices RECORDER & RECEIVER WITH GEMSTAR covered by Some semiconductor (solid state) devices can be damaged this service data and its supplements and addends, read and easily by static electricity. Such components commonly are follow the SAFETY PRECAUTIONS.
ELECTRICAL TROUBLESHOOTING GUIDE 1. CPU(SYSTEM CONTROL) TROUBLESHOOTING Start Power is supplied normally? (A) Power check Clock signals are OK? (B) Clock check Reset signals are OK at the time of (C) Reset check power-on reset? Chip selection signals are OK? (D) CS check IIC channels are OK? (E) IIC check...
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(A) Power check Power Supply Check 2.5V is supplied to L101? IC954(3) : 2.5V 3.3V is supplied to IC104(37), IC105(37), Power Supply Check IC950(2) : 3.3V IC102(1), IC103(1), and IC201(3)? Power Supply Check 3.3V is supplied to IC106(14)? IC950(2) : 3.3V (B) Clock check 25MHz clock is output from X101(3)? Check X101...
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Fig.01 X101(3) : 25MHz CPU Clock Fig.02 IC201(87) : 37.5MHz PERI Clock Fig.03 X102(3) : 3.6864MHz UART Clock...
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(D) CS check Logic low pulse is seen at R138? Check IC101, 104, 105 Fig.05 Logic low pulse is seen at R140? Check IC101, IC211 Logic low pulse is seen at R144? Check IC101, IC400 Logic low pulse is seen at R143? Check IC101, IC201 Fig.05 R138(1) : Flash CS signal...
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(E) IIC check IIC SDA and SCL signals are output Check IC211 from IC211(19 & 18)? Fig.06 & Fig.07 IIC SCL and SDA signals are output Check IC101 from IC101(W17 & U15)? Fig.06 IC211(19) : 3.3V IIC SDA signal Fig.07 IC211(18) : 3.3V IIC SCL signal...
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(F) Interrupt check Logic high is input to IC101(D18) or R418? Check IC100, IC400 Logic high is input to IC101(W20) or Check IC100, CN201(7) CN201(7)? Fig.08 IC101(D18) : No Interrupt signal...
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(G) RS-232C check RS-232C port setup is OK? Modify RS-232C port setup (Baudrate, Parity, Data Bit, Stop Bit) IC204(10) is OK?(TxD signal) Check IC101, IC204 Fig.09 IC204(9) is OK?(RxD signal) Check IC101, IC204 Fig.10 Fig.09 IC204(10) : TxD signal Fig.10 IC204(9) : RxD signal...
2. ATSC/QAM FRONT_END TROUBLESHOOTING Start Check the power lines(A9V, D5V_2, Power is supplied normally(TU300)? D3.3V_2, P_30V_TU) referring the circuit diagram. RF signal is detected? Check antenna connection. (using Spectrum Analyzer) Check the Voltage between L303 and Check error signal(TU300(22)). (using Ground.
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FIG.01 TU300(28,29,30,31,32,33,34,35) VSB/QAM DATA Outputs FIG.02 TU300(27) VSB/QAM DATA Packet Clock FIG.03 TU300(36) VSB/QAM DATA Byte Clock 3-11...
3. NTSC/FRONT_END TROUBLESHOOTING Start Check the power lines(A9V, D5V_2, Power is supplied normally? D3.3V_2, P_30V_TU) referring the circuit diagram RF signal is detected? Check antenna connection. (using Spectrum Analyzer) What Voltage is between L303 and ground ? Change Q300. 5V : NO 1V( below) : YES Check NIM Tuner(TU300)’s output signal Change TU300.
4. VIDEO TROUBLESHOOTING Start No HV sync OUT? Any problem in OSD ? What is the main picture source? Any problem in main picture? DTV or NTSC. NTSC Any problem in AV out? (C1) (C2)
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Power is supplied to IC400[HD2]? Check L400( 1.8V), IC950(2) (3.3V). Video display clock(IC600(7)) is supplied Check IC605(5) and IC600(1) FIG.02. to HD2? FIG.01 Check IC605(1,8) and X600 if there is sinusoidal 27MHz clock. FIG.03 Change Display Color select switch to If HV sync exists in IC607 (6,7) RGB/DVI side and check HV sync.
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FIG.02 VCXO 27MHz clock FIG.03 Crystal 27MHz clock FIG.04 H-sync signal FIG.05 V-sync signal 3-15...
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No OSD is not a problem. Check analog component mute ON? Check DVI output. Check analog buffers. Check A5V(L603) & A-5V(L604) are IC604 for composite out. supplied. IC609 for component YPbPr, IC610 for RGB analog out Jump to (A) flow (C1) When DTV is main Check input stream existence.
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FIG.06 Digital Stream Input to IC400 FIG.07 Interrupt Request Signal on R418 3-17...
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(C2) When NTSC is main Check tuner output composite signal Check tuner block(TU300) (C615) FIG.08 power check: L602 5V Analog input: IC606 (44) Check NTSC decoder. Reference clock oscillation : X601 FIG.09 Pixel clock: 13.5MHz continuous Clock in IC606 (28). FIG.10 Hsync out: 15.7KHz negative pulse in IC606 (36).
5. DVI TROUBLESHOOTING * : Please check that receiver supports this format. START DVI cable is connected? Connect DVI cable. DVI output is activated in STB ? * Check IC500(57(IDCK+), 2(DE), 480P picture is OK? 4(HSYNC), 5(VSYNC)) The IDCK_ clock shall be 27MHz. Fig.01 * Check IC500(57(IDCK+), 2(DE), 720P &...
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Display Type switch on rear panel is Change the switch to RGB/DVI side. RGB/DVI side ? Use other DVI cable or turn on the The emitter of Q500 is high volt ? monitor that is connected with DVI cable. IC500(11) is high volt ? Change the DVI chip.
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FIG.01 FIG.02 DVI output at 480p DVI output at 720p FIG.03 FIG.04 DVI output at 1080i even field DVI output at 1080i odd field 3-24...
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FIG.05 FIG.06 DVI output at 480i even field DVI output at 480i odd field 3-25...
6. AUDIO TROUBLESHOOTING (1) NO ATSC Audio 1) Check IC400 and Surroundings 1.8V & 3.3V are supplied to IC400? Check the Power Supply Part. Data is input from TU300 to IC400(A11, Check Tuner Part. E19, A20)? Data is output from R424? Check the surroundings of IC401.
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Fig.01 Data output from R424 Fig.02 3.072MHz clock from R422 Fig.03 48KHz clock from R421 3-27...
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2) Check MSP4448G and Surroundings 5V is supplied to IC701(10, 16, 49, 63)? Check Power Supply Part 8V is supplied to IC701(31)? 12V is supplied to IC703(1)? Check Power Supply Part 18.432MHz Clock is input to IC701(54, Check X701 55)? Data pulse is input to IC701(6)? Check IC400 48kHz clock is input to IC701(4)?
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6. AUDIO TROUBLESHOOTING 3) No SPDIF Out for ATSC 9V is supplied to IC702(8)? Check Power Supply Part Analog audio signal is output from Check IC702 and surroundings IC702(1, 7)? 6. AUDIO TROUBLESHOOTING 4) Check Output Jack and Surroundings Check Q702, Q703, Q704, Q705, JA600 and their surroundings 3-29...
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6. AUDIO TROUBLESHOOTING (2) No NTSC Audio ATSC Audio is OK? Go back to symptom #1 SIF signal is input to the Base of Q302? Check TU300 SIF signal is input to IC701(50)? Fig.05 Check Q302 Analog audio signal is output from Check IC701 and surroundings.
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6. AUDIO TROUBLESHOOTING (3) No SPDIF Out for ATSC ATSC Audio is OK? Go back to symptom #1 SPDIF pulse is output from R423? Fig.06 Check IC400 and surroundings. SPDIF pulse is output from IC704(4)? Check IC704 and surroundings. 5V is supplied to JA701(2)? Check Power Supply Part.
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6. AUDIO TROUBLESHOOTING (4) No SPDIF Out for ATSC ATSC Audio is OK? Go back to symptom #1 ATSC SPDIF is OK? Go back to symptom #3 NTSC Audio is OK? Go back to symptom #2 Analog audio is output from IC701 Check IC701.
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SECTION 4 REPLACEMENT PARTS LIST MODEL : LST-4600A.AA1ULL (LGEUS) AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION REMARKS *** INDIVIDUAL PARTS *** 3110R-V030A CASE TOP(LST-4600A) PRESS 1BK-0512391 BOLT,HEXAGON SOCKET HEAD D5.1 L7.0 STS 430 6410RADK10A POWER CORD KJP-120/KJC-303 3PIN KUKJE UL/...
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AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION REMARKS C112 0CN223AK948 CAPACITOR,TUBULAR(HIGH DIELEC) 0.022UF 50V Z F TA26 S C113 0CN4710K518 CAPACITOR TUBULA(HIGH DIELE) 470P TA26 C120 0CE1054K638 CAPACITOR,ELECTROLYTIC 1.0M SRA/SS50V M FM5 TP(5) C122 0CE2282F611 CAPACITOR,FIXED ELECTROLYTIC 2200UF KMF 16V 20% BK7.5 FL...
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AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION REMARKS R107 614-007A RESISTOR 2.7/2W CEMENT SMPS V R108 0RD4701F608 RESISTOR,FIXED CARBON FILM 4.7K OHM 1/6 W 5% TA26 R109 0RS0350K619 RESISTOR,FIXED METAL OXIDE FIL 0.35 OHM 2 W 5.00% TR R121...
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AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION REMARKS C217 0CK104CF96A CAPACITOR,FIXED CERAMIC(HIGH D 0.1UF 1608 16V 80%,-20% X7R R/ C218 0CK104CF96A CAPACITOR,FIXED CERAMIC(HIGH D 0.1UF 1608 16V 80%,-20% X7R R/ C219 0CH1224F516 CAPACITOR,FIXED CERAMIC(Temp.c 0.22UF 16V 10% B(5YP) 2012 R/T...
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AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION REMARKS R201 0RH1000C622 RESISTOR,METAL GLAZED(CHIP) 100 OHM 1 / 16 W 1608 5.00% D R202 0RH1000C622 RESISTOR,METAL GLAZED(CHIP) 100 OHM 1 / 16 W 1608 5.00% D R203 0RH1000C622 RESISTOR,METAL GLAZED(CHIP) 100 OHM 1 / 16 W 1608 5.00% D...
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AL LOCA. NO. LG PART NO. DESCRIPTION SPECIFICATION REMARKS AR135 0RRZVTA001J RESISTOR,DRAWING 4.7K OHM 1 / 16 W 3216 5% R/TP AR136 0RRZVTA001M RESISTOR,DRAWING 4.7K OHM 1 / 10 W 1608 4P 5% R AR136 0RRZVTA001J RESISTOR,DRAWING 4.7K OHM 1 / 16 W 3216 5% R/TP...