Sharp QT-V5E User manual

QT-V5E/QT-V5H
SERVICE MANUAL
No. XXXXXXXXXXXXX
SHARP CORPORATION
CONTENTS
Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for
maintaining the safety and performance of the set.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
CHAPTER 1. GENERAL DESCRIPTION
[1] Specifications ................................................. 1-1
[2] Names of parts............................................... 1-2
CHAPTER 2. MECHANISM BLOCKS
[1] Caution on disassembly ................................. 2-1
CHAPTER 3. DIAGRAMS
[1] Block diagrams............................................... 3-1
CHAPTER 4. CIRCUIT DESCRIPTION
[1] Notes on schematic diagram.......................... 4-1
[2] Types of transistor and LED........................... 4-1
[3] Voltage ........................................................... 4-2
CHAPTER 5. CIRCUIT SCHEMATICS AND PARTS
LAYOUT
[1] Schematic diagram........................................5-1
[2] Wiring side of PWB......................................5-13
CHAPTER 6. OTHERS
[1] Function table of IC .......................................6-1
Parts Guide
In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
DVD/CD SYSTEM
QT-V5E
MODEL
DVD/CD SYSTEM
QT-V5H
MODEL

QT-V5E/QT-V5H
– i –
SAFETY PRECAUTION FOR SERVICE MANUAL
Precaution to be taken when replacing and servicing the Laser Pickup.
The AEL (Accessible Emission Level) of Laser Power Output for this model is specified to be lower than Class 1 Requirements.
However, the following precautions must be observed during servicing to protect your eyes against exposure to the Laser beam.
(1) When the cabinet has been removed, the power is turned on without a compact disc, and the Pickup is on a position outer than
the lead-in position, the Laser will light for several seconds to detect a disc. Do not look into the Pickup Lens.
(2) The Laser Power Output of the Pickup inside the unit and replacement service parts have already been adjusted prior to shipping.
(3) No adjustment to the Laser Power should be attempted when replacing or servicing the Pickup.
(4) Under no circumstances look directly into the Pickup Lens at any time.
(5) CAUTION - Use of controls or adjustments, or performance of procedures other than those specified herein may result in
hazardous radiation exposure.
IMPORTANT SERVICE NOTES (FOR U.K. ONLY)
Before returning the unit to the customer after completion of a
repair or adjustment it is necessary for the following withstand
voltage test to be applied to ensure the unit is safe for the
customer to use.
Setting of Withstanding Voltage Tester and set.
Set name set value
Withstanding Voltage Tester
Test voltage 4,240 VPEAK
3,000 VRMS
Set time 6 secs
Set current (Cutoff current) 4 mA
Unit
Judgment
OK: The "GOOD" lamp lights.
NG: The "NG" lamp lights and the buzzer sounds.
PROBE
AC
OUT
UNIT
SHORT-CIRCUIT
AC POWER
SUPPLY CORD
CONNECT THE PROBE
TO GND OF CHASSIS
SCREW
WITHSTANDING
VOLTAGE TESTER

QT-V5E/QT-V5H
1 – 1
AudioQT-V5E/QT-V5HService ManualQT-V5E/QT-V5HMarketE
CHAPTER 1. GENERAL DESCRIPTION
[1] Specifications
Power source AC 230 - 240 V, 50 Hz
DC 12 V ["D" size (UM/SUM-1, R20 or HP-2) battery 8]
DC 3 V ["AA" size (UM/SUM-3, R6 or HP-7) battery 2 for
memory]
Power consumption 23 W
Output power RMS: 10 W (5 W + 5 W) (10 % T.H.D., 1 kHz)
Speakers Full range speaker system 8 cm 1/each
Dimensions Width: 420 mm
Height: 150 mm
Depth: 260 mm
Weight 4.6 kg
Signal system PAL/NTSC color
Supported disc types DVD (region number 2 or ALL), SVCD, VCD, audio CD,
CD-R, CD-RW, MP3
Video signal Horizontal resolution: 500 lines
S/N ratio: 70 dB
Audio signal Frequency character-
istics
Linear PCM DVD:
20 Hz to 20 kHz (sampling rate:
48 kHz)
20 Hz to 20 kHz (sampling rate:
96 kHz)
CD:20Hzto20kHz
S/N ratio CD: 80 dB (1 kHz)
Dynamic range Linear PCM DVD: 70 dB
CD: 70 dB
Total harmonic distor-
tD:ion ratio
0.01 % maximum
Audio output termi-
nals
Headphones: 16 - 50 ohms (recommended: 32 ohms)
Optical digital output: Square type 1
Analog output: RCA type 1 pair (L/R)
Video output termi-
nals
SCART output: SCART terminal 1
Video output: RCA type 1
S-video output: S-terminal 1
Frequency range FM: 87.5 - 108 MHz
AM: 522 - 1,620 kHz
Specifications for this model are subject to change without
prior notice.
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
Power source AC 230 - 240 V, 50 Hz
DC 12 V ["D" size (UM/SUM-1, R20 or HP-2) battery 8]
DC 3 V ["AA" size (UM/SUM-3, R6 or HP-7) battery 2 for
memory]
Power consumption 23 W
Output power RMS: 10 W (5 W + 5 W) (10 % T.H.D., 1 kHz)
Speakers Full range speaker system 8 cm 1/each
Dimensions Width: 420 mm
Height: 150 mm
Depth: 260 mm
Weight 5.2 kg
Signal system PAL/NTSC color
Supported disc types DVD (region number 2 or ALL), SVCD, VCD, audio CD,
CD-R, CD-RW, MP3
Video signal Horizontal resolution: 500 lines
S/N ratio: 70 dB
Audio signal Frequency character-
istics
Linear PCM DVD:
20 Hz to 20 kHz (sampling rate:
48 kHz)
20 Hz to 20 kHz (sampling rate:
96 kHz)
CD:20Hzto20kHz
S/N ratio CD: 80 dB (1 kHz)
Dynamic range Linear PCM DVD: 70 dB
CD: 70 dB
Total harmonic distor-
tion ratio
0.01 % maximum
Audio output termi-
nals
Headphones: 16 - 50 ohms (recommended: 32 ohms)
Optical digital output: Square type 1
Analog output: RCA type 1 pair (L/R)
Video output termi-
nals
SCART output: SCART terminal 1
Video output: RCA type 1
S-video output: S-terminal 1
Frequency range FM: 87.5 - 108 MHz
AM: 522 - 1,620 kHz
QT-V5HQT-V5E

QT-V5E/QT-V5H
1 – 2
[2] Names of parts
Main unit
1. On/Stand-by Switch
2. Volume Up and Down Buttons
3. Stop Button
4. Play/Pause Button
5. Chapter (track) Skip Down or Tuning Down Button
6. Chapter (track) Skip Up or Tuning Up Button
7. Tuner (Band) Button
8. Disc Tray Open/Close Button
9. Remote Sensor
10. Disc Tray
11. Timer Set Indicator
12. Extra Bass Indicator
13. Random Indicator
14. Repeat Indicator
15. Memory Indicator
16. Track Indicator
17. Surround Indicator
18. Stereo Indicator
19. Sleep Indicator
20. Timer Indicator
21. Preset Equalizer Indicators
22. CD Indicator
23. MP3 Indicator
24. FM Telescopic Rod Aerial
25. SCART Output Socket
26. S-video Output Socket
27. Video Output Socket
28. Audio Output Sockets
29. Headphone Socket
30. Optical Digital Audio Output Socket
31. Battery Compartment cover
32. AC Power Input Socket
12 13 14 15 16 17 18 19 20
24
31 32
25 26 27 2928 30
21 22 23
9 10 11
1 2 3 4 5 6 7 8
Remote control
1. Remote Control Transmitter
2. On-Screen Display Select Button
3. On/Stand-by Button
4. Subtitle Select Button
5. Audio Language Select or Audio Output Select Button
6. Angle Select Button
7. Top Menu Button
8. Clear Button
9. Return Button
10. Cursor Buttons
11. 1/ALL Repeat Button
12.A-BRepeat Button
13. PBC On/Off Button
14. Slow-motion Play Buttons
15. Fast Reverse/Tuner Preset Down and Fast Forward/
Tuner Preset Up Buttons
16. Programme Button
17. Clock Button
18. Shift Button
19. Timer/Sleep Button
20. Sound Mode Select Button
21. Tuner (Band) Button
22. Dimmer Button
23. Disc Tray Open/Close Button
24. Direct Number Buttons
25. Menu Button
26. Enter Button
27. GOTO Button
28. Random Play Button
29. Still/Frame Advance Buttons
30. Chapter (Track) Skip Up and Down Buttons
31. Play/Pause Button
32. Stop Button
33. Volume Up and Down Buttons
1
32
22
23
24
25
26
27
28
33
31
29
30
9
7
6
5
4
3
2
10
11
12
13
14
18
15
16
17
19
20
21
8
This button works as the ZOOM button when pressed with the SHIFT button.
This button works as the NTSC/PAL select button when pressed with the SHIFT
button.
QT-V5E/QT-V5H

QT-V5E/QT-V5H
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AudioQT-V5E/QT-V5HService ManualQT-V5E/QT-V5HMarketE
CHAPTER 2. MECHANISM BLOCKS
[1] Caution on disassembly
Caution on Disassembly
Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure excellent performance:
1. Take compact disc and DVD disc out of the unit.
2. Be sure to remove the power supply plug from the wall outlet before starting to disassemble the unit.
3. Take off nylon bands or wire holders where they need to be removed when disassembling the unit. After servicing the unit, be sure to rearrange
the leads where they were before disassembling.
1 Front Cabinet 1. Screw .................... (A1) x8
2. Socket ................... (A2) x1
2 Top Cabinet 1. Screw ...................... (B1) x6
2. Socket ..................... (B2) x1
3 Switch PWB 1. Screw ...................... (C1) x4
4 Tuner PWB 1. Screw ...................... (D1) x2
2. Socket ..................... (D2) x2
3. Tip .......................... (D3) x1
4. Screw ..................... (D4) x4
5 Display PWB 1. Screw ...................... (E1) x4
2. Socket ..................... (E2) x4
6 Amp. PWB 1. Screw .......................(F1) x5
2. Socket .................... (F2) x6
3. Flat Cable (G3) x1
7 MPEG PWB Unit 1. Screw....................
................
(G1) x10
2. Socket...................... (G2) x2
8 DVD Unit 1. Screw...................... (H1) x4
9 Power
Switch PWB
1. Screw ....................... (J1) x1
2. Socket ...................... (J2) x1
10 Power PWB 1. Screw ...................... (K1) x2
2. Socket ..................... (K2) x1
STEP REMOVAL PROCEDURE
QT-V5E/QT-V5H
Note:
After removing the connector for the optical pickup from the
connector, wrap the conductive aluminium foil around the front end
of the connector so as to protect the optical pickup from electro-
static damage.
Rear Cabinet
Front Cabinet
(B1)x2
φ3x14mm
(B1)x2
φ3x14mm
(A1)x2
φ3x10mm
(G1)x6
φ3x8mm
(A1)x3
φ3x35mm
(A1)x3
φ3x35mm
(A2)x1
Switch PWB
Top Cabinet
Display PWB (C1)x4
φ2.5x8mm
(B2)x1
(B1)x2
φ3x10mm
Amp.
PWB
(F2)x1
(D1)x2
φ3x10mm
(D4)x4
φ3x10mm
(E1)x4
φ3x8mm
(F1)x5
φ3x8mm
(D2)x2
(E2)x1
(D3)x1
(F2)x1
(E2)x1
(E2)x1 (F2)x1
(F2)x3
(E2)x1
Power
Switch
PWB
MPEG
PWB Unit
Tuner PWB Display PWB
Tuner Holder

QT-V5E/QT-V5H
2 – 2
(G2)x2
(K2)x1
(J2)x1
(K1)x2
φ 3x10mm
(J1)x2
φ 3x8mm
(G1)x4
φ 3x8mm
(H1)x4
φ 3x10mm
Power PWB
Power Switch PWB
(G3)x1
MPEG PWB Unit
DVD Unit
Pull
Pull
DSP PWB

QT-V5E/QT-V5H
3 – 1
AudioQT-V5E/QT-V5HService ManualQT-V5E/QT-V5HMarketE
CHAPTER 3. DIAGRAMS
[1] Block diagrams
Figure 3-1 BLOCK DIAGRAM
DVD+12V +5.6V DVD+3.5V DVD+5V
AC POWER SUPPLY CORD
AC 230-240 V, 50 Hz
CVBS-VIDEO
JK1
S-VIDEO
JK3
SCART OUT
AUDIO OUT
OPTICAL OUT
LCH
RCH LCH
SPEAKER
RCH
FM
J6
HEAD PHONE
LCH
RCH
DVD
MECHANISM UNIT
UU2
ES6603
DVD SERVO
CONTROL
UU3
DVD
MOTOR
DRIVER
FANB024D
U1
ES6629
MPEGII DECODER
DTS DECODER
DOLBY DIGITAL DECODER
DOLBY PRO LOGIC DECODER
WMA DECODER
MP3 DECODER
TV ENCODER
PROGRESSIVE SCAN
U5
SD RAM
U2
FLASH
U3
EEPROM
U10
DA1132
AUDIO DAC
VIDEO SW
& FILTER
BUFFER
IC103
TUNER FM/AM
RF,IF MPX : LA1823
IC101
PLL : BU2616
AM LCD301
KEY
SW501-
SW508
IC205
PT2313L
AUDIO
PROCESSOR
IC204
TA8229K
POWER AMP
AC TRANS
FORMER
POWER SUPPLY
RECTIFIER
DCDC CONVERTER
REGULATOR
SW1
POWER SW
IC301
UPD78F9418AGC
MICROCOMPUTER

QT-V5E/QT-V5H
4 – 1
AudioQT-V5E/QT-V5HService ManualQT-V5E/QT-V5HMarketE
CHAPTER 4. CIRCUIT DESCRIPTION
[1] Notes on schematic diagram
•Resistor:
To differentiate the units of resistors, such symbol as K and M are
used: the symbol K means 1000 ohm and the symbol M means
1000 kohm and the resistor without any symbol is ohm-type resis-
tor. Besides, the one with “Fusible” is a fuse type.
• Capacitor:
To indicate the unit of capacitor, a symbol P is used: this symbol P
means pico-farad and the unit of the capacitor without such a sym-
bol is microfarad. As to electrolytic capacitor, the expression
Ocapacitance/withstand voltageO is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
• Schematic diagram and Wiring Side of P.W.Board for this model are
subject to change for improvement without prior notice.
• The indicated voltage in each section is the one measured by Digi-
tal Multimeter between such a section and the chassis with no sig-
nal given.
1. In the tuner section,
indicates AM
indicates FM stereo
2. In the main section, a tape is being played back.
3. In the deck section, a tape is being played back.
( ) indicates the record state.
4. In the power section, a tape is being played back.
5. In the CD section, the CD is stopped.
• Parts marked with “ “ ( ) are important for main-
taining the safety of the set. Be sure to replace these parts with
specified ones for maintaining the safety and performance of the
set.
[2] Types of transistor and LED
REF. NO DESCRIPTION POSITION
SW1 POWER ON—OFF
SW501 VOLUME DOWN ON—OFF
SW502 VOLUME UP ON—OFF
SW503 STOP ON—OFF
SW504 PLAY ON—OFF
SW505 SKIP DOWN ON—OFF
SW506 SKIP UP ON—OFF
SW507 TUNER (BAND) ON—OFF
SW508 OPEN/CLOSE ON—OFF
REF. NO DESCRIPTION POSITION
MMBT9014 C
8050C
KTC3199 GR
VIEW
FRONT
ECB
(S)(G)(D)
(1)(2)(3)
FRONT
VIEW
7811B

QT-V5E/QT-V5H
4 – 2
[3] Voltage
IC201 IRF7313
IC202 IRF7313
IC203 IRU3048
1 3.51V
1 5.17V
1 0V 9 8.0V
2 5.8V
2 0.99V
2 1.23V 10 4.53V
30V
30V
3 1.58V 11 5.8V
4 4.53V
43.6V
4 1.80V 12 15.99V
5 3.51V
5 5.17V
5 17.63V 13 6.6V
6 3.51V
6 5.17V
6 0.99V 14 1.12V
7 13.24V
7 13.24V
7 3.53V 15 2.94V
8 13.24V
8 13.24V
8 0V 16 1.23V
IC204 TA8229K IC205 PT2313L
1 0V 9 6.77V 1 4.14V 9 4.14V 17 4.16V 25 4.19V
2 12.34V 10 0.6V 2 8.35V 10 4.14V 18 4.14V 26 0V
3 6.54V 11 0V 3 0V 11 4.15V 19 4.16V 27 5.15V
4 13.36V 12 0V 4 4.15V 12 4.15V 20 4.16V 28 5.20V
5 6.5V 13 0.6V 5 4.18V 13 4.17V 21 4.15V
6 12.3V 14 0V 6 4.18V 14 4.17V 22 4.16V
7 0V 15 0V 7 4.16V 15 4.16V 23 4.18V
8 12.66V 8 4.16V 16 4.17V 24 4.17V
Q203 8050C Q211 9014C Q210 HE8550 Q212 HE8550
C 5.93V C 0.45V C 0.18V C 10.08V
B 6.57V B 0V B 13.40V B 9.35V
E 0V E 0V E 13.41V E 10.10V
Q213 9014C Q214 9014C Q215 9014C Q206 9014C
C 0.05V C 0.45V C 0.9V C 0V
B 0.68V B 0V B B 0V
E 0V E 0V E 0V
0V
E0V
Q2079014C Q205 9014C Q216 HE8550 Q202 HE8550
C 0V C 0V C 0V C 13.87V
B 0V B 0.7V B 13.87V B 13.20V
E 0V E 0V E 13.87V E 13.87V
Q201 9014C Q204 9014C Q208 9014C Q209 9014C
C 2.94V C 0V C 4.40V C 4.50V
B 0V B 0.70V B 0V B 0V
E 0V E 0V E 0V E 0V
IC301 D789406A
1 5.16V 21 1.40V 41 0.18 61 5.18V
2 2.75V 22 1.40V 42 0.39V 62 5.16V
3 2.75V 23 1.40V 43 0.35V 63 0V
4 1.79V 24 1.40V 44 0.29V 64 0V
5 0.96V 25 1.40V 45 0V 65 5.12V
6 0V 26 1.39V 46 3.24V 66 5.18V
7 1.36V 27 1.39V 47 3.87V 67 5.18V
8 1.37V 28 1.39V 48 0V 68 5.05V
9 1.36V 29 1.37V 49 5.18V 69 3.0V
10 1.37V 30 1.37V 50 5.18V 70 0V
11 1.39V 31 1.37V 51 0.68V 71 5.18V
12 1.40V 32 1.37V 52 5.11V 72 3.11V
13 1.39V 33 1.37V 53 0V 73 2.52V
14 1.40V 34 1.37V 54 1.95V 74 0V
15 1.38V 35 1.37V 55 1.85V 75 5.17V
16 1.36V 36 1.40V 56 3.3V 76 0V
17 1.37V 37 1.40V 57 0V 77 0V
18 1.37V 38 1.37V 58 0V 78 5V
19 1.40V 39 5.45V 59 0V 79 5.13V
20 1.40V 40 5.45V 60 4.35 80 5.15V
Q301 9014C
Q303 9014C
Q302 9014C
C0V
C3.99V
C 4.49V
B 0.7V
B0V
B0V
E0V
E0V
E0V
1 1.26V 7 0.05V 13 4.19V 19 1.05V
2 1.26V 8 0.1V 14 4.28V 20 4.93V
3 4.96V 9 4.96V 15 4.25V 21 4.89V
4 4.96V 10 1.25V 16 1.16V 22 4.89V
5 2.51V 11 1.25V 17 1.17V 23 0V
60V121.08V18 1.25V 24 0.82V
IC103 LA1823 IC101 BU2616
1 2.33V 7 0.08V 13 0V
2 1.93V 8 0V 14 2.25V
3 0V 9 0.05V 15 4.88V
40V100V16 1.13V
5 0V 11 0.05V 17 1.11V
6 0.05V 12 0.07V 18 0V
Q101 8050C Q102 8050C Q100 8050C
13.65V C 13.8V C 13.72V
5.77V B 5.59V B 11.52V
5.14V E
C
B
E 4.97V E 11V
Q103 3199GR Q104 3199GR Q109 3199GR
Q1103 199GR
C 1.15V C 1.96V C 1.33V
C1.33V
B 1.96V B 0.65V B 1.25V
B0.65V
E 0.65V E0V E 0.65V
E0V
Q106 9014C Q107 9014C Q108 9018G
C 4.25V C 0.05V C 4.72V
B 0.05V B 2.88V B 2.88V
E 0.82V E 2.17V E 2.17V

QT-V5E/QT-V5H
5 – 1
AudioQT-V5E/QT-V5HService ManualQT-V5E/QT-V5HMarketE
CHAPTER 5. CIRCUIT SCHEMATICS AND PARTS LAYOUT
[1] Schematic diagram
Figure 5-1 SCHEMATIC DIAGRAM (1/12)
10k 10k 10k
MMBT9014C MMBT9014C
220/16
0.1 4.7/50
0.1 22P 22P
10k
UPD78F9418AGC
SW504
PLAY
SW506
SKIP UP
SW505
SKIP
DOWN
SW507
TUNER
(BAND)
SW503
STOP
SW508
OPEN
SW502
VOLUME
UP
SW501
VOLUME
DOWN
220µH
DISPLAY PWB-E
CN202
P5-9 5-F
TO
AMP. PWB
NOTES ON SCHEMATIC DIAGRAM can be found on page 4-1.
A
B
C
D
E
F
G
H
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