Sharp XL-HP737 (serv.man4) Service Manual ▷ View online
SERVICE MANUAL
XL-HP737
No. XXXXXXXXXXXXX
MICRO COMPONENT SYSTEM
XL-HP737
MODEL
SHARP CORPORATION
CONTENTS
CHAPTER 1. GENERAL DESCRIPTION
[1] IMPORTANT SERVICE NOTES (FOR
[1] IMPORTANT SERVICE NOTES (FOR
U.S.A. ONLY) ................................................. 1-1
[2] SPECIFICATIONS ......................................... 1-1
[3] NAMES
[3] NAMES
OF
PARTS........................................ 1-2
CHAPTER 2. ADJUSTMENTS
[1] ADJUSTMENT ............................................... 2-1
[2] TEST
[1] ADJUSTMENT ............................................... 2-1
[2] TEST
MODE .................................................. 2-3
[3] Standard Specification of Stereo System
Error Message Display Contents ................... 2-5
CHAPTER 3. MECHANICAL DESCRIPTION
[1] REMOVING AND REINSTALLING THE
[1] REMOVING AND REINSTALLING THE
MAIN PARTS ................................................. 3-1
[2] DISASSEMBLY .............................................. 3-3
CHAPTER 4. DIAGRAMS
[1] BLOCK
[1] BLOCK
DIAGRAM ......................................... 4-1
CHAPTER 5. CIRCUIT DESCRIPTION
[1] WAVEFORMS OF CD CIRCUIT .................... 5-1
[2] VOLTAGE....................................................... 5-2
[1] WAVEFORMS OF CD CIRCUIT .................... 5-1
[2] VOLTAGE....................................................... 5-2
CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS
LAYOUT
[1] NOTES ON SCHEMATIC DIAGRAM ............6-1
[2] TYPES OF TRANSISTOR AND LED ............6-1
[3] WIRING SIDE OF P.W.BOARD/SCHE-
LAYOUT
[1] NOTES ON SCHEMATIC DIAGRAM ............6-1
[2] TYPES OF TRANSISTOR AND LED ............6-1
[3] WIRING SIDE OF P.W.BOARD/SCHE-
MATIC DIAGRAM ..........................................6-2
CHAPTER 7. FLOWCHART
[1] TROUBLESHOOTING ..................................7-1
[1] TROUBLESHOOTING ..................................7-1
CHAPTER 8. OTHERS
[1] FUNCTION TABLE OF IC .............................8-1
[2] FL
[1] FUNCTION TABLE OF IC .............................8-1
[2] FL
DISPLAY ................................................8-15
Parts Guide
XL-HP737 Micro Component System consisting of XL-
HP737 (main unit) and CP-HP737 (speaker system).
HP737 (main unit) and CP-HP737 (speaker system).
•
In the interests of user-safety the set should be restored to its origi-
nal condition and only parts identical to those specified be used.
nal condition and only parts identical to those specified be used.
XL-HP737
1 – 1
Audio
XL-HP737
Service Manual
XLHP737
Market
E
CHAPTER 1.
GENERAL DESCRIPTION
[1] IMPORTANT SERVICE NOTES (FOR
U.S.A. ONLY)
U.S.A. ONLY)
BEFORE RETURNING THE AUDIO PRODUCT
(Fire & Shock Hazard)
Before returning the audio product to the user, perform the following
safety checks.
safety checks.
1. Inspect all lead dress to make certain that leads are not pinched or
that hardware is not lodged between the chassis and other metal
parts in the audio product.
parts in the audio product.
2. Inspect all protective devices such as insulating materials, cabinet,
terminal board, adjustment and compartment covers or shields,
mechanical insulators etc.
mechanical insulators etc.
3. To be sure that no shock hazard exists, check for leakage current in
the following manner.
*
Plug the AC line cord directly into a 120 volt AC outlet.
*
Using two clip leads, connect a 1.5k ohm, 10 watt resistor paral-
leled by a 0.15µF capacitor in series with all exposed metal cabinet
parts and a known earth ground, such as conduit or electrical
ground connected to earth ground.
leled by a 0.15µF capacitor in series with all exposed metal cabinet
parts and a known earth ground, such as conduit or electrical
ground connected to earth ground.
*
Use a VTVM or VOM with 1000 ohm per volt, or higher, sensitivity
to measure the AC voltage drop across the resistor (See diagram).
to measure the AC voltage drop across the resistor (See diagram).
*
Connect the resistor connection to all exposed metal parts having a
return path to the chassis (antenna, metal cabinet, screw heads,
knobs and control shafts, escutcheon, etc.) and measure the AC
voltage drop across the resistor.
return path to the chassis (antenna, metal cabinet, screw heads,
knobs and control shafts, escutcheon, etc.) and measure the AC
voltage drop across the resistor.
All check must be repeated with the AC line cord plug connection
reversed.
reversed.
Any reading of 0.3 volt RMS (this corresponds to 0.2 milliamp. AC.) or
more is excessive and indicates a potential shock hazard which must
be corrected before returning the audio product to the owner.
more is excessive and indicates a potential shock hazard which must
be corrected before returning the audio product to the owner.
[2] SPECIFICATIONS
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
TO THE OPERATION MANUAL.
TO EXPOSED
METAL PARTS
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
KNOWN EARTH
GROUND
TEST PROBE
0.15 µ F
1.5k ohms
10W
VTVM
AC SCALE
Specifications for this model are subject to change without
prior notice.
prior notice.
■
General
■
Amplifier
■
CD player
■
Tuner
■
Cassette deck
■
Speaker
Power source
AC 120 V, 60 Hz
Power
consumption
consumption
92 W
Dimensions
Width: 7-1/4" (185 mm)
Height: 10-1/4" (260 mm)
Depth: 12" (307 mm)
Height: 10-1/4" (260 mm)
Depth: 12" (307 mm)
Weight
14.5 lbs. (6.6 kg)
Output power
100 watts minimum RMS per channel into 6
ohms from 100 Hz to 20 kHz, 10% total har-
monic distortion
ohms from 100 Hz to 20 kHz, 10% total har-
monic distortion
Output terminals
Speakers: 6 ohms
Headphones: 16 - 50 ohms
(recommended: 32 ohms)
(recommended: 32 ohms)
Subwoofer pre-out (audio signal):
200 mV/10 k ohms at 70 Hz
200 mV/10 k ohms at 70 Hz
Input terminals
Video/Auxiliary (audio signal):
500 mV/47 k ohms
500 mV/47 k ohms
Type
5-disc multi-play compact disc player
Signal readout
Non-contact, 3-beam semiconductor laser
pickup
pickup
D/A converter
1-bit D/A converter
Frequency
response
response
20 - 20,000 Hz
Dynamic range
90 dB (1 kHz)
Frequency range
FM: 87.5 - 108.0 MHz
AM: 530 - 1,720 kHz
Frequency
response
response
50 - 14,000 Hz (normal tape)
Signal/noise ratio
50 dB (recording/playback)
Wow and flutter
0.3 % (WRMS)
Type
2-way type speaker system
2" (5 cm) tweeter
5-7/8" (15 cm) woofer
Maximum input
power
power
200 W
Rated input power
100 W
Impedance
6 ohms
Dimensions
Width: 7-1/8" (180 mm)
Height: 10-1/4" (261 mm)
Depth: 10-3/16" (259 mm)
Height: 10-1/4" (261 mm)
Depth: 10-3/16" (259 mm)
Weight
6.8 lbs. (3.1 kg)/each
XL-HP737
1 – 2
[3] NAMES OF PARTS
■ Front panel
1. Disc Trays
2. Timer Indicator
3. Power On/Stand-by Button
4. Clock/Timer Button
5. Disc Track Down or Fast Reverse, Tape Fast Wind,
2. Timer Indicator
3. Power On/Stand-by Button
4. Clock/Timer Button
5. Disc Track Down or Fast Reverse, Tape Fast Wind,
Tuner Preset Down, Time Down Button
6. Tape Reverse Play Button
7. Tape Reverse Mode Select Button
8. Cassette Compartment
9. Headphone Jack
7. Tape Reverse Mode Select Button
8. Cassette Compartment
9. Headphone Jack
10. Disc Tray Open/Close Button
11. Disc Number Select Buttons
12. Disc Direct Play Button
13. Illumination Light
14. Volume Control
15. Disc Track Up or Fast Forward, Tape Fast Wind,
11. Disc Number Select Buttons
12. Disc Direct Play Button
13. Illumination Light
14. Volume Control
15. Disc Track Up or Fast Forward, Tape Fast Wind,
Tuner Preset Up, Time Up Button
16. Memory/Set Button
17. Equalizer Mode Select Button
18. Extra Bass/Demo Mode Button
19. Disc Play or Repeat, Tape Forward Play Button
20. Disc or Tape Stop Button
21. CD Button
22. Tuner (Band) Button
23. Tape Button
24. Video/Auxiliary Button
25. Tape Record Pause Button
26. Tuning Up Button
27. Tuning Down Button
17. Equalizer Mode Select Button
18. Extra Bass/Demo Mode Button
19. Disc Play or Repeat, Tape Forward Play Button
20. Disc or Tape Stop Button
21. CD Button
22. Tuner (Band) Button
23. Tape Button
24. Video/Auxiliary Button
25. Tape Record Pause Button
26. Tuning Up Button
27. Tuning Down Button
1
11
12
14
15
16
17
18
19
20
15
16
17
18
19
20
10
2
3
4
13
9
5
6
7
6
7
8
23
24
21
26
27
25
22
■ Display
1. Disc Number Indicators
2. MP3 Folder Indicator
3. MP3 Title Indicators
4. MP3 Total Indicator
5. Sleep Indicator
6. Timer Play Indicator
7. Timer Recording Indicator
8. Tape Record Indicator
9. Daily Timer Indicator
2. MP3 Folder Indicator
3. MP3 Title Indicators
4. MP3 Total Indicator
5. Sleep Indicator
6. Timer Play Indicator
7. Timer Recording Indicator
8. Tape Record Indicator
9. Daily Timer Indicator
10. FM Stereo Mode Indicator
11. FM Stereo Receiving Indicator
12. Memory Indicator
13. Tape Reverse Play Indicator
14. Tape Forward Play Indicator
15. Tape Reverse Mode Indicator
16. MP3 Disc Indicator
17. Extra Bass Indicator
18. Disc Repeat Play Indicator
19. Disc Pause Indicator
20. Disc Play Indicator
11. FM Stereo Receiving Indicator
12. Memory Indicator
13. Tape Reverse Play Indicator
14. Tape Forward Play Indicator
15. Tape Reverse Mode Indicator
16. MP3 Disc Indicator
17. Extra Bass Indicator
18. Disc Repeat Play Indicator
19. Disc Pause Indicator
20. Disc Play Indicator
■ Rear panel
1. Cooling Fan
2. Speaker Terminals
3. AC Power Cord
4. FM 75 Ohms Antenna Terminal
5. FM Antenna Ground Terminal
6. AM Loop Antenna Jack
7. Video/Auxiliary (Audio Signal) Input Jacks
8. Subwoofer Pre-output Jack
2. Speaker Terminals
3. AC Power Cord
4. FM 75 Ohms Antenna Terminal
5. FM Antenna Ground Terminal
6. AM Loop Antenna Jack
7. Video/Auxiliary (Audio Signal) Input Jacks
8. Subwoofer Pre-output Jack
■ Speaker system
1
4
5
7
6
8
3
2
9
13 14
11
10
12
4 5
3
2
1
7 8
15
16 17 18
19
20
1. Tweeter
2. Woofer
3. Bass Reflex Duct
4. Speaker Wire
2. Woofer
3. Bass Reflex Duct
4. Speaker Wire
1
3
4
2
6
XL-HP737
1 – 3
■ Remote control
1. Remote Control Transmitter
2. Disc Number Select Buttons
3. Cursor Buttons
4. Character Input/Disc Direct Search Buttons
5. Equalizer Mode Select Button
6. Extra Bass Button
7. Power On/Stand-by Button
8. CD Button
9. Tuner (Band) Button
2. Disc Number Select Buttons
3. Cursor Buttons
4. Character Input/Disc Direct Search Buttons
5. Equalizer Mode Select Button
6. Extra Bass Button
7. Power On/Stand-by Button
8. CD Button
9. Tuner (Band) Button
10. Tape Button
11. Video/Auxiliary Button
12. Volume Up and Down Buttons
13. Disc Random Button
14. Disc Clear/Dimmer Button
15. Disc Stop Button
16. Tape Reverse Play Button
17. Tape Stop Button
18. Memory/Set Button
19. Disc Pause Button
20. Disc Play or Repeat Button
21. Tape Forward Play Button
22. Tape Record Pause Button
23. MP3 Disc Navigation Mode Select Button
24. MP3 Disc Display Button
25. Enter Button
26. Clock/Timer Button
27. Character Button
28. Disc Track Down or Fast Reverse, Tape Fast Wind,
11. Video/Auxiliary Button
12. Volume Up and Down Buttons
13. Disc Random Button
14. Disc Clear/Dimmer Button
15. Disc Stop Button
16. Tape Reverse Play Button
17. Tape Stop Button
18. Memory/Set Button
19. Disc Pause Button
20. Disc Play or Repeat Button
21. Tape Forward Play Button
22. Tape Record Pause Button
23. MP3 Disc Navigation Mode Select Button
24. MP3 Disc Display Button
25. Enter Button
26. Clock/Timer Button
27. Character Button
28. Disc Track Down or Fast Reverse, Tape Fast Wind,
Tuner Preset Down, Time Down Button
29. Disc Track Up or Fast Forward, Tape Fast Wind,
Tuner Preset Up, Time Up Button
1
2
10
11
12
8
9
7
4
3
5
6
13
18
19
21
22
14
15
16
17
20
23
26 27 28 29
24 25
