SERVICEManual DVD RECEIVER AMP SYSTEM HT-Q20

SERVICEManual
DVD RECEIVER AMP SYSTEM
HT-Q20

Ch1 Precautions
1-1. Safety Precautions 1-1
1-2. Servicing Precautions 1-2
1-3. Precautions for Electrostatically
Sensitive Device (ESDs) 1-3
1-4. Special Precautions and Warning
Lables for Laser Products 1-4
1-5. Special Precautions for HDD 1-5
INDEX
Ch2 Product Descriptions
1. Product Feature 2-1
2. Specifications 2-2
3. Notes on Discs 2-3
4. Accessories 2-4
Ch3 Product Functions
HT-Q20
1. SPK Connection & Setup 3-1
2. Main Functions 3-2
3. New Functions 3-3
Ch4 Adjustments
Protection Mode Explanation 4-1
Ch5 How to disassemble
How to disassemble 5-1
Ch6 Troubleshooting
1. No Power 6-1
2. No Output 6-2
3. DVD MPEG 6-4
4. DVD SERVO 6-6
Ch7 Exploded View & Parts List
1. Total Exploded View 7-1
2. Parts List 7-5
Ch8 Electrical Parts List
Electrical Parts List 8-1
Ch9 Block Diagram
MAIN 9-1
DVD 9-2
Ch10 Wiring Diagram
Wiring Diagram 10-1
Ch11 PCB Diagram
1. MAIN 11-1
2. AMP 11-2
Ch12 Schematic Diagram
1. AMP 12-1
2. MAIN 12-2
3. FRONT 12-3
4. AUX 12-4
5. MPEG 12-5
6. KARAOKE 12-6
Ch13 Circuit Description
Circuit Board Description 13-1
Ch14 HTS Reference
1. HTS (Home Theater Sytsem) 14-1
2. About “Sound” 14-2
3. 5.1 Channel Sound 14-3
4. HTS Sound Format 14-4
5. HTS Devices 14-5

2. Product Description
1. Specifications
HT-Q20

2. Notes on discs
DVD (Digital Versatile Disc) offers fantastic audio and video, thanks to Dolby Digital surround
sound and MPEG-2 video compression technology. Now you can enjoy these realistic
effects in the home, as if you were in a movie theater or concert hall.
V I D E O
DVD players and the discs are coded by region. These regional codes must match in order
for the disc to play. If the codes do not match, the disc will not play.
The Region Number for this player is given on the rear panel of the player.
(Your DVD player will only play DVDs that are labeled with identical region codes.)
• LD, CD-G, CD-I, CD-ROM and DVD-ROM cannot be played on this player.
If such discs are played, a "WRONG DISC FORMAT" message appears on the TV screen.
• DVD discs purchased abroad may not play on this player.
If such discs are played, a "WRONG REGION CODE" message appears on the TV screen.
Copy Protection

HT-Q20
• Many DVD discs are encoded with copy protection. Because of this, you should only connect
your DVD player directly to your TV, not to a VCR. Connecting to a VCR results in a distorted picture
from copy-protected DVD discs.
• This product incorporates copyright protection technology that is protected by methods claims of certain
U.S. patents and other intellectual property rights owned by Macrovision Corporation and other rights
owners. Use of this copyright protection technology must be authorized by Macrovision Corporation, and
is intended for home and other limited viewing uses only unless otherwise authorized by Macrovision
Corporation. Reverse engineering or disassembly is prohibited.
Disc Recording Format

CD-R Discs
• Some CD-R discs may not be playable depending on the disc recording device (CD-Recorder or PC) and the
condition of the disc.
• Use a 650MB/74 minute CD-R disc.
Do not use CD-R disk over 700MB/80 minute as much as possible since it may not be played back.
• Some CD-RW (Rewritable) media, may not be playable.
• Only CD-Rs that are properly "closed" can be fully played. If the session is closed but the disc is left open, you
may not be able to fully play the disc.
CD-R JPEG Discs
• Only files with the ".jpeg" and ".JPEG" extensions can be played.
• If the disc is not closed, it will take longer to start playing and not all of the recorded files may be played.
• Only CD-R discs with JPEG files in ISO 9660 or Joliet format can be played.
• JPEG file names should be 8 characters or less in length and contain no blank spaces or special characters (. / = +).
• Only a consecutively written multisession disc can be played. If there is a blank segment in the multisession disc, the
disc can be played only up to the blank segment.
• A maximum of 9,999 images can be stored on a single CD.
• When playing a Kodak/Fuji Picture CD, only the JPEG files in the picture folder can be played.
• Picture discs other than Kodak/Fuji Picture CDs may take longer to start playing or may not play at all.

3. Accessories
AH39-40001V CABLE-AUDIO CABLE;1P-1P,3000MM,- COMMON
AH42-00021A ANT FM T;T18011F-1,75 ohm,1800mm COMMON
AH59-01643C REMOCON-ASSY;HT-Q20,EUR,AR-7060, EUROPE

8. Electrical Parts List
Location no. Code no. Description & Specification Remarks
***** HT-Q20R/XFU Parts List *****

AB235 AH61-01795A BRACKET-HOLDER;SDM-D12,SECC,0.6,-,-,-,-
AB260 AH61-10513A BRACKET-PCB;DAT7000,SUN,T2.0,W85,L105,GR
AC010 AH64-03781C CABINET-FRONT;HT-Q20,HIPS,2.5T,430,-,-,-
AC025 AH64-03790E CABINET-BOTTOM-REAR;HT-Q20,SECC 0.6T,-,-
AC080 AH64-03791B CABINET-TOP;HT-Q20,SECC 0.5T,-,-,-,-,-,-
AD150 AH64-03783C DECORATION-FRONT;HT-Q20/COM,ABS,-,-,-,-,
AD480 AH64-03782C DOOR-CD;HT-Q20,ABS,-,-,-,-,-,DVD A-VID
AD510 AH64-02320B DOOR-TRAY;MM-KT8,ABS,-,-,-,-,-,-
AG030 AH66-00216A GEAR-PULLEY;CMS-SD100,TPE,-,-,-,BLACK,-,
AH320 AH61-01825A HOLDER-MECHA;HT-P30,ABS,-,-,-,-,-
AK170 AH64-03816A KNOB-FUNCTION;HT-Q40,ABS,-,-,-,-,-,-,-
AK250 AH64-03687C KNOB-MIC;DVD-K170,ABS,-,-,17,-,-,-,BLAC
AK270 AH64-03795B KNOB-OPEN;HT-Q20,ABS,-,20,20,-,-,-,NATUR
AK290 AH64-03784A KNOB-POWER;HT-Q20,ABS,-,-,-,-,-,-,-
AL150 AH67-00398A LENS-REMOCON;HT-Q20,ABS,-,-,-,-,-
AM000 AH59-01198E MICROPHONE;-,-,-,-,-,-,-,-,-,SILVER, ANO
AM020 AH31-00039B MOTOR FAN;C151BK10A2430,RDM5015S,0.12A,-
AP090 AH66-00219A PULLEY-BELT;CMS-SD100,CR 1.5,-,-,-,-,-,-
AS000 6001-001257 SCREW-MACHINE;PWH,+,M1.7,L3,ZPC(YEL),SWR
AS030 6002-000126 SCREW-TAPPING;FH,+,-,2S,M3,L10,ZPC(BLK),
AS040 6003-000152 SCREW-TAPTITE;PH,+,B,M2,L10,ZPC(YEL),SWR
AS040 6003-001446 SCREW-TAPTITE;BH,+,,M2,L5,NI PLT
AS040 6003-001476 SCREW-TAPTITE;PWH,+,B,M2,L5,ZPC(YEL)
AS040 6003-000276 SCREW-TAPTITE;BH,+,-,B,M3,L10,ZPC(YEL),S
AS040 6003-000279 SCREW-TAPTITE;BH,+,-,B,M3,L20,ZPC(YEL),S
AS040 6003-001465 SCREW-TAPTITE;BWH,+,B,M3,L8,ZPC(YEL)
AS259 AH61-01474A SPRING ETC-DECK;CMS-SD100,SUS304,-,-,-,1
AS260 AH61-02122A SPRING ETC-DOOR;-,SUS304,-,-,-,-,-,-,Q20
AW140 AH64-03787C WINDOW-VFD;HT-Q20/TQ22,TQ25,ACRYL,-,-,-,
BC2 2203-000972 C-CER,CHIP;47nF,10%,16V,X7R,1608
BC4 2202-002037 C-CERAMIC,MLC-AXIAL;100nF,80-20%,50V,Y5V
BRKE AH61-02125A BRACKET-X-READY;HT-Q20,SPTE 0.5T,-,-,-,-
C13SW 2203-000787 C-CER,CHIP;0.33NF,5%,50V,C0G,TP,2012
C16SW 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,1608
C2 2401-000303 C-AL;100uF,20%,25V,GP,TP,6.3x11,5
C29FR 2401-003564 C-AL;1000uF,20%,35V,LZ,TP,12.5X25mm
C2RL 2203-005171 C-CER,CHIP;1000nF,10%,16V,X7R,2012
C37RR 2305-000407 C-FILM,LEAD-PEF;470nF,5%,100V,TP,-,5mm
C5FL 2203-001634 C-CER,CHIP;33nF,10%,50V,X7R,1608
C7RR 2401-002300 C-AL;47uF,20%,50V,GP,TP,6.3x11,5
CD000 AH61-01741A BASE-MAIN;K100,ABS,-,-,-,-,-
CD101 AH65-30010A CLAMP-WIRE;-,-,-,-,-,-
CD300 AH66-00217A GEAR-TRAY;CMS-SD100,POM,-,-,-,BLACK,-,-,
CD340 AH66-00262A LEVER-LIFT;-,ABS,-,-,-,-,BLK,-
CD380 AH66-00215A PULLEY MOTOR;CMS-SD100,POM,-,WHITE,-,-,-
CD520 3409-001138 SWITCH-DETECTOR;5V DC,1A,DPST,30GF,-
ECHV1 2101-001068 VR-ROTARY;10KB,-,1/20W,SIDE
EL6 3301-001069 BEAD-SMD;120ohm,1.6x0.8x0.8mm,200mA,TP,
FC2 2401-001975 C-AL;47uF,20%,16V,GP,TP,5x11mm,5mm
FC6 2401-000651 C-AL;2.2uF,20%,50V,GP,TP,4x7,5
FCON1 3708-000453 CONNECTOR-FPC/FFC/PIC;21P,1.25MM,STRAIGH
FCON2 3711-003409 HEADER-BOARD TO CABLE;BOX,3P,1R,2mm,STRA
FCW2 AH39-00858A WIRE HARNESS;HT-Q20,-,1007,3P,70mm,-,AWG
FCW3 AH39-00753A LEAD CONNECTOR;HT-P50,4P,2mm,490,2854#28
FD2 0401-001099 DIODE-SWITCHING;1N4148WS,75V,150mA,SOD-3
FJ1 3711-000820 HEADER-BOARD TO CABLE;BOX,2P,1R,2.5MM,ST
FJ1 3406-001047 SWITCH-ROTARY;5V DC,0.5mA,-,12mm
FQ1 0501-000422 TR-SMALL SIGNAL;KTA1273,PNP,-30V,-30V,-2
FQ2 0501-000341 TR-SMALL SIGNAL;KSC1623-L,NPN,200mW,SOTFQ2
0504-000156 TR-DIGITAL;KSR2103,PNP,200MW,22K/22K,SOT
FR1 2001-000022 R-CARBON(S);33OHM,5%,1/2W,AA,TP,2.4X6.4M
FR12 2001-000020 R-CARBON(S);22OHM,5%,1/2W,AA,TP,2.4X6.4M
FR15 2007-000023 R-CHIP;120ohm,5%,1/8W,TP,2012
FR16 2007-000572 R-CHIP;220ohm,5%,1/8W,TP,2012
FR2 2007-000241 R-CHIP;1.5Kohm,5%,1/8W,TP,2012
FR21 2007-000094 R-CHIP;22Kohm,5%,1/10W,TP,1608
FR22 2007-000116 R-CHIP;120ohm,5%,1/10W,TP,1608
FR3

Samsung Electronics
HT-Q20