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JVC TH-A30 Service Manual

Dvd digital cinema system
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Download this manual See also: Instruction Manual
SERVICE MANUAL
DVD DIGITAL CINEMA SYSTEM
SP-XSA30 2
STANDBY/ON
AUDIO
TV
VCR
TV/VIDEO PROGRESSIVE
DISPLAY
STEP
TV CHANNEL
AUDIO/
FM MODE SUBTITLE
TV VOLUME
VCR
DVD
FM/AM
AUX
CONTROL
TUNER PRESET
DOWN
UP
REW
FF
VCR CHANNEL
TUNING
B.SEARCH
F.SEARCH
ENTER
VOLUME
TOP MENU
MENU
RETURN
MUTING
STANDBY
STANDBY/ON
RM-STHA30U
DVD CINEMA SYSTEM
Contents
Safety precautions
Preventing static electricity
Important for laser products
TH-A30
SP-XA30 3
AUDIO/FM MODE
DSP
VOLUME
SOURCE
DVD DIGITAL CINEMA SYSTEM TH-A30
XV-THA30
1-2
1-3
1-4
COPYRIGHT
2002 VICTOR COMPANY OF JAPAN, LTD.
UB ------------- Hong Kong
D I G I T A L
Disassembly method
Wiring connection
Description of major ICs
TH-A30
Area suffix
US -------------- Singapore
UW -- Brazil,Mexico,Peru
UG - Turkey,South Africa,
Egypt
A ------------------ Australia
SP-WA30
1-5
1-12
1-13~28
No.21172
Dec. 2002

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Summary of Contents for JVC TH-A30

  • Page 1 VOLUME TOP MENU MENU RETURN MUTING STANDBY AUDIO/FM MODE STANDBY/ON VOLUME SOURCE DVD DIGITAL CINEMA SYSTEM TH-A30 D I G I T A L RM-STHA30U DVD CINEMA SYSTEM XV-THA30 SP-WA30 Contents Safety precautions Disassembly method Preventing static electricity Wiring connection...
  • Page 2 TH-A30 1. This design of this product contains special hardware and many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be performed by qualified personnel only.
  • Page 3 TH-A30 Preventing static electricity 1.Grounding to prevent damage by static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
  • Page 4 TH-A30 Important for laser products 5.CAUTION : If safety switches malfunction, the laser is able 1.CLASS 1 LASER PRODUCT to function. 2.DANGER : Invisible laser radiation when open and inter 6.CAUTION : Use of controls, adjustments or performance of lock failed or defeated. Avoid direct exposure to beam.
  • Page 5 TH-A30 Top cover Disassembly method Removing the top cover (See Fig.1) Remove the four screws A attaching the top cover on both sides of the body. Remove the three screws B on back of the body. (both sides) Fig.1 Remove the top cover from behind in the direction of the arrow while pulling both sides outward.
  • Page 6 TH-A30 Removing the DVD mechanism assembly DVD mechanism assembly MPEG (See Fig.5 and 6) board Prior to performing the following procedure, remove the top cover. Disconnect the card wire from the connector J14 and J21 on the DVD MPEG board.
  • Page 7 TH-A30 Removing the DSP board (See Fig.9) Harness band DSP board Prior to performing the following procedure, remove the top cover, front panel assembly, DVD mechanism assembly and jack board. Remove the harness band fixing the harness. Disconnect the harness from the connector J9 and J10 on the DSP board.
  • Page 8 TH-A30 Heat sink 3 The power ICs fixed to the heat sink 3 can be (to which power removed individually that it is easy to remove IC is attached) screws (in meaning that a screw driver reaches). It is Screws not necessary to remove whole like above- mentioned 1.
  • Page 9 TH-A30 <DVD mechanism assembly section> DVD mechanism assembly (top side) Removing the DVD loader board (See Fig.1 to 3) Prior to performing the following procedure, remove the top cover and DVD mechanism assembly. Disconnect the card wire from the connector J6 on DVD MPEG board the DVD MPEG board.
  • Page 10 TH-A30 DVD loading mechanism Removing the DVD traverse mechanism (top side) (See Fig.5) Prior to performing the following procedure, remove DVD traverse the top cover, DVD mechanism assembly, DVD mechanism loader board and DVD loading mechanism. Remove the four screws D attaching the DVD traverse mechanism to DVD loading mechanism.
  • Page 11 TH-A30 Woofer (Bottom side) <Speaker section> One point These slots are used. Front panel [SP-XA30 / Satellite speaker] The tool with a flat tip It is exchange in a unit. [SP-XSA30 / Rear satellite speaker] It is exchange in a unit.

  • Page 12: Wiring Connection

    TH-A30 Color codes are shown below. Wiring connection Brown Blue 3809-001273 Violet 3809-001305 Orange Gray Yellow White Green Black DSP BOARD 3809-001334 1-12...
  • Page 13 TH-A30 Description of major ICs BA5954 (MU9) : Motor driver 1. Block diagram PreGND PGND 7.5k STAND LOADING ACTUATOR DRIVER DRIVER 7.5k DET.AMP. THERMAL SHUT DOWN DET.AMP. 7.5k SLED ACTUATOR DRIVER DRIVER 7.5k PGND 2. Pin function Pin No. Symbol...
  • Page 14 TH-A30 ZiVA-5 (U8) : DVD controller 1. Pin layout DAI-DATA VDD_3.3 DAI-BCK/SYSCLKBP MDATA31 DAI-LRCK/IEC958BP MDATA30 C_CL MDATA29 C_DA MDATA28 RTS1 VDD_3.3 RXD1 TXD1 MDQM3 CTS1 MDATA27 MDATA26 VDD_3.3 MDATA25 SD-DATA7 MDATA24 SD-DATA6 MDATA23 SD-DATA5 SD-DATA4 MDATA22 MDATA21 MDATA20 VDDC VDD_3.3...
  • Page 15 TH-A30 2. Pin function (2/4) Name Pin No. Type Description Power 5-V supply voltage for 5V-tolerant I/O signals. VDDP 12, 20, 111, 152, 167, 181, 196 Power 3.3-V supply voltage for I/O signals VDD25 32, 44, 55, 63, 74, 87, 98, 104 Power 3.3-V supply voltage for SDRAM I/O signals...
  • Page 16 TH-A30 2. Pin function (3/4) Name Pin No. Type Description SDDATA[7]/VDATA2[7] Compressed data from DVD DSP. Bit 7. In parallel mode, bit 7 is the first /HDMARQ/GPIO24 (earliest in time) bit in the bitstream, while bit 0 is the last bit.
  • Page 17 TH-A30 2. Pin function (4/4) Name Pin No. Type Description IRRX1/GPIO0 IR Remote Receive. This input connects to an integrated (photo diode, band pass, demodulator) IR receiver. General Purpose I/O 0 IDC_CL/GPIO18 Serial clock signal for IDC data transfer. It should be pulled up to the positive supply voltage, depending on the device) using an external pull-up resistor.
  • Page 18 TH-A30 LC86P6548 (UIC1) : Microcontroller 1.Pin layout S48/PG0 S19/PC3 S18/PC2 S49/PG1 S17/PC1 S50/PG2 S51/PG3 S16/PC0 VDD3 S15/T15 S14/T14 S13/T13 S12/T12 VSS2 S11/T11 VDD2 S10/T10 S9/T9 S8/T8 S7/T7 P10/SO0 S6/T6 S5/T5 P11/SI0/SB0 S4/T4 P12/SCK0 S3/T3 P13/SO1 P14/SI1/SB1 S2/T2 S1/T1 P15/SCK1 2.Block diagram...
  • Page 19 TH-A30 3. Pin function Pin No. Symbol Function P16/BUZ Buzzer output P17/PWM0 Timer 1 output (PWM0 output) 8bit input/output port Input/output in bit unit 15V withstand at N-channel open drain output P70/INT0 INT0 input /HOLD release/N-channel Tr. ouptput forwatchdog timer...
  • Page 20 TH-A30 SST39VF800A (U6) : 8M Flash memory 1. Pin layout DQ15 DQ14 DQ13 DQ12 DQ11 DQ10 2. Block diagram EEPROM X-Decoder Cell Array Memory Address Address Buffer & Latches Y-Decoder Control Logic I/O Buffers & Data Latches DQ15-DQ0 3. Pin function...
  • Page 21 TH-A30 AK4355 (U6) : DAC 1.Pin layout 2.Block diagram Audio LOUT1+ DATT LOUT1- MCLK LRCK ROUT1+ DATT BICK ROUT1- LOUT2+ DATT Control LOUT2- CCLK Register CDTI ROUT2+ DATT ROUT2- LOUT3+ DATT LOUT3- SDTI1 SDTI2 ROUT3+ SDTI3 DATT ROUT3- 3.Pin function Pin No.
  • Page 22 TH-A30 M62463AFP (U11) : Surround decoder 1. Pin layout RLC8 FBIN RLC6 LPF2 OUT LBPF2 LPF2 IN2 LBPF1 LOF2 IN1 RBPF2 DAINT OUT RBPF1 DAINT IN DACONT ADCONT ADINT OUT ADINT IN ABcc LPF1 OUT VREF LPF1 IN2 IREF LPF1 IN1...
  • Page 23 TH-A30 SP3721A (RU1) : DVD anlog front end chip 1.Pin layout 64-49 2.Pin function Pin No. Symblo Function 17-32 DVDRFP,VDVDRFN RF Signal Inputs PD1,PD2 CD Photodetector Interface Inputs A2,B2,C2,D2 Photo Detector Interface Inputs Differential Phase tracking LPF pin Differential Phase tracking LPF pin...
  • Page 24 TH-A30 M12L64164A (AU13, AU14) : SDRAM 1.Pin layout 2.Pin function Symbol Function DQ15 System Clock VDDQ VSSQ Chip Select DQ14 DQ13 Clock Enable VSSQ VDDQ A0 ~ A11 Address DQ12 A12 , A13 Bank Select Address DQ11 VDDQ VSSQ Row Address Strobe...
  • Page 25 TH-A30 BA4560 (AIC2, IC5, IC6, IC7, U1, U3, U5, U9, U13) : Dual op amp. 1.Pin layout OUT1 – IN1 OUT2 – + IN1 – IN2 – + IN2 74LVT573 (U10, U11, U12) : Latch 1. Pin layout 2. Pin function 3.
  • Page 26 TH-A30 74HCT245 (U15) : Transceiver 1.Pin layout 2.Truth table ENABLE Control Operation Inputs B data to A bus A data to B bus isolation H = HIGH Level L = LOW Level X = Irrelevant M5705 (DU3) : DVD-ROM controller 1.Block diagram...
  • Page 27 TH-A30 BA7612F (VIC3) : Video signal switcher 1. Block diagram 2. Truth table CTL A CTL B MUTE L (OPEN) L (OPEN) CTLA 75Ω L (OPEN) CTLB LOGIC L (OPEN) MUTE TDA7440D (U2) : Audio processor 1. Terminal layout 2. Block diagram...
  • Page 28 TH-A30 TDA7449L (U7, U12) : Audio processor 1.Pin layout 2.Block diagram MUXOUTL CREF L-IN1 100K PGND DIG_GND ROUT N.C. L-IN2 LOUT N.C. SPKR ATT VOLUME LOUT LEFT 100K R_IN2 N.C. R_IN1 N.C. L_IN1 N.C. 0/30dB L_IN2 N.C. CBUS DECODER + LATCHES...
  • Page 29 TH-A30 < M E M O > 1-29...
  • Page 30 TH-A30 VICTOR COMPANY OF JAPAN, LIMITED AUDIO & COMMUNICATION BUSINESS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan 200212 (No.21172)
  • Page 31 VOLUME TOP MENU MENU RETURN MUTING STANDBY AUDIO/FM MODE STANDBY/ON VOLUME SOURCE DVD DIGITAL CINEMA SYSTEM TH-A30 D I G I T A L RM-STHA30U DVD CINEMA SYSTEM XV-THA30 SP-WA30 Contents Block diagrams Standard schematic diagrams Printed circuit boards 2-6~10 No.21172SCH...
  • Page 32 TH-A30 In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( diode ( ) and ICP ( ) or identified by the " " mark nearby are critical for safety.
  • Page 33 TH-A30 DVD mecha block section Block diagrams Main section...
  • Page 34 TH-A30 TH-A30 Standard schematic diagrams Main section /Power supply section To J7 To J2 To DJ6 To Tuner Pack Sheet 2/4 Sheet 2/4 Sheet 3/4 To J21 Sheet 4/4 To J10 Sheet 2/4 To FCW1 To J5 To J6 Sheet 2/4...
  • Page 35 TH-A30 FL display & System control section / DSP section Tuner signal Digital audio signal Front signal Center signal Rear signal To J14 To FCW1-1 Sheet 4/4 Sheet 1/4 To J10-1 Sheet 1/4 LOUT(PLL) MUX-OUT(L) To FAN To PW3 Sheet 1/4...
  • Page 36 TH-A30 TH-A30 DVD loader section DR146 PLLVCC To PW4 10 (2012) Sheet 1/5 DC76 DTC12 DC75 0.1U 100U/16V 0.1U PAGND PLLGND CIC21(2012) DTC10 DTC11 DC73 DC74 MVCC DC89 CON6_2.54M 0.01U 0.1U 0.1U 220U/16V 100U/16V RD15 DQ15 CIC21(2012) RD14 DQ14 RFVCC...
  • Page 37 TH-A30 DVD MPEG section IEC_958 +5V_VID +5V_VI D +5V_VI D +5V_VID +5V_VID PLL_VDD RXD_MDATA FBSMT RRQ_MCE RRQ_MCE REF_VDD SRQ_SCE FBSMT VR16 FBSMT(DEL) CON_WAFER_1m/m_SMD_ST 0.1u CLK_MCK RXD_MDATA COMP TXD_SDATA COMP_ O UT DVDD IEC_958 OPT_OUT VR17 FBSMT PLL_GND FBSMT S_VIDEO_Y COMP_OUT...
  • Page 38 TH-A30 TH-A30 Printed circuit boards Front board Switch board Display board...
  • Page 39 TH-A30 Main board Jack board...
  • Page 40 TH-A30 TH-A30 DVD loader board (Forward side) DVD MPEG board (Forward side)
  • Page 41 TH-A30 DVD loader board (Reverse side) DVD MPEG board (Reverse side)
  • Page 42 TH-A30 TH-A30 DSP board (Forward side) (Reverse side) 2-10...
  • Page 43 TH-A30 < M E M O >...
  • Page 44 TH-A30 VICTOR COMPANY OF JAPAN, LIMITED AUDIO & COMMUNICATION BUSINESS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan 200212 No.21172SCH...

  • Page 45: Parts List

    TH-A30 PARTS LIST [ TH-A30 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix US ---------------------- Singapore UB --------------------- Hong Kong UW ---------- Brazil,Mexico,Peru UG - Turkey,South Africa,Egypt A ------------------------- Australia - Contents - 3- 2 Exploded view of general assembly and parts list (Block No.M1)
  • Page 46 TH-A30 Exploded view of general assembly and parts list Block No.
  • Page 47 TH-A30 Parts list (General assembly) Block No. M1MM Item Parts number Parts name Q'ty Description Area 6002-000126 SCREW 2 FH 3X10 BLK 6003-000398 SCREW 20 BH 2S 3X6 YEL 6003-000276 SCREW 3 BH M3X10 YEL AH60-10107A SCREW 4 M4X6 YEL...
  • Page 48 TH-A30 DVD mechanism assembly and parts list Block No. CMSD100 DVD MPEG board DVD loader board...
  • Page 49 TH-A30 Parts list (DVD mechanism) Block No. MJMM Item Description Parts number Parts name Q'ty Area AH61-00746A BASE-MAIN 1 BLK AH63-00294A TRAY-DISC 1 D/GRAY AH66-00159A LEVER-LIFT 1 BLK AH66-00160A PULLEY-MOTOR AH66-00161A GEAR-PULLEY AH66-00162A GEAR-MIDDLE AH66-00163A GEAR-TRAY AH66-00164A CLAMPER-UPPER 1 UPPER...
  • Page 50 TH-A30 Electrical parts list (Main&jack board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area ABD1 0402-001408 DIODE KBP005G 50V 1.5A 2001-000435 CARBON RESISTOR 1M 5% 1/8W ABD2 0402-001258 BRIDGE DIODE GBU606 600V 6A...
  • Page 51 TH-A30 Electrical parts list (Main&jack board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area C43FR 2401-001645 E.CAPACITOR 0.68UF 20% 50V D35RL 0401-001090 DIODE 1SS355 80V C43RL 2401-000759 E.CAPACITOR 220NF 20% 50V...
  • Page 52 TH-A30 Electrical parts list (Main&jack board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area JW055 2007-000029 CHIP RESISTOR 0 5% 1/10W 0501-000303 TRANSISTOR KSA733 JW122 2007-000029 CHIP RESISTOR 0 5% 1/10W...
  • Page 53 TH-A30 Electrical parts list (Main&jack board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area Q31FR 0502-001048 POWER TRANSISTOR KSD1691 R127 2007-000572 CHIP RESISTOR 220 5% 1/10W Q31RL 0502-001048 POWER TRANSISTOR KSD1691...
  • Page 54 TH-A30 Electrical parts list (Main&jack board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area R38RL 2007-001039 CHIP RESISTOR 56K 5% 1/10W R80FR 2007-001039 CHIP RESISTOR 56K 5% 1/10W R38RR 2007-001039 CHIP RESISTOR...
  • Page 55 TH-A30 Electrical parts list (Main&jack board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area R94FL 2007-000766 CHIP RESISTOR 330 5% 1/10W ZD6C 0403-001079 ZENER DIODE UDZ3.9B R94FR 2007-000766 CHIP RESISTOR 330 5% 1/10W...
  • Page 56 TH-A30 Electrical parts list (Front board) Block No. 02 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area FCW1 3708-000454 CONNECTOR 22P 1.25MM 2007-000941 CHIP RESISTOR 47K 5% 1/10W FCW2 3708-000452 CONNECTOR 19P 1.25MM UR30...
  • Page 57 TH-A30 Electrical parts list (DSP board) Block No. 03 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area BBC1 2401-001975 E.CAPACITOR 47UF 20% 16V BC195 2203-000840 CHIP CAPACITOR 0.39NF 5% 50V BC01 2203-000979 CHIP CAPACITOR...
  • Page 58 TH-A30 Electrical parts list (DSP board) Block No. 03 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area BC81 2203-000203 CHIP CAPACITOR 100NF 10% 16V 2007-000468 CHIP RESISTOR 1K 5% 1/10W BC82 2203-000979 CHIP CAPACITOR...
  • Page 59 TH-A30 Block No. 03 Electrical parts list (DSP board) Item Remarks Parts number Parts name Area BR97 2007-000282 CHIP RESISTOR 100K 5% 1/10W BR98 2007-001177 CHIP RESISTOR 8.2K 5% 1/10W BR99 2007-000449 CHIP RESISTOR 180 5% 1/10W 3708-001601 CONNECTOR 19P 1.25MM...
  • Page 60 TH-A30 Electrical parts list (DVD loader board) Block No. 04 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area CPUR6 2007-000113 CHIP RESISTOR 33 5% 1/16W DR101 2007-000113 CHIP RESISTOR 33 5% 1/16W CPUR7 2007-000113...
  • Page 61 TH-A30 Electrical parts list (DVD loader board) Block No. 04 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area DR51 2007-000962 CHIP RESISTOR 5.1K 1% 1/16W MR173 2007-000102 CHIP RESISTOR 100K 5% 1/16W DR52 2007-000113...
  • Page 62 TH-A30 Block No. 04 Electrical parts list (DVD loader board) Item Parts number Parts name Remarks Area RTC2 2401-001893 E.CAPACITOR 100UF 20% 16V RTC4 2401-001893 E.CAPACITOR 100UF 20% 16V RTC5 2401-001893 E.CAPACITOR 100UF 20% 16V 1201-001790 SP3721A 64P 1201-001842 TL3472CD 8P...
  • Page 63 TH-A30 Electrical parts list (DVD MPEG board) Block No. 05 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area 2203-000178 CHIP CAPACITOR 100NF +80-20% 25V 2007-000074 CHIP RESISTOR 100 5% 1/16W 2203-000178 CHIP CAPACITOR 100NF +80-20% 25V...
  • Page 64 TH-A30 Block No. 05 Electrical parts list (DVD MPEG board) Item Parts number Parts name Remarks Area 2007-000113 CHIP RESISTOR 33 5% 1/16W 2007-000113 CHIP RESISTOR 33 5% 1/16W 2007-000113 CHIP RESISTOR 33 5% 1/16W 2007-000113 CHIP RESISTOR 33 5% 1/16W...
  • Page 65 TH-A30 < M E M O > 3-21...
  • Page 66 TH-A30 Packing materials and accessories parts list Block No. Block No. P 5 A2~A10 A13~A17 A11,A12 (Short cord) SP-XTHA30 FRONT L FRONT R CENTER (Long cord) REAR L REAR R SP-WA30 P10 A18,A19 3-22...
  • Page 67 TH-A30 Parts list (Packing) Block No. M3MM Item Parts number Parts name Q'ty Description Area PACKING CASE AH69-00761C AH69-00740A CUSHION L 1 SET AH69-00741A CUSHION R 1 SET AH69-10081J POLY BAG 1 SET POLY BAG AH69-00525B AH81-00841H CUSHION TOP 1 SPEAKER BOX...