Read Sharp XL-UR27H (serv.man2) Service Manual online
XL-UR27H
7
SERVICE MANUAL
No. S7837XLUR27HH
PRECAUTIONS FOR USING LEAD-FREE SOLDER
CHAPTER 1. GENERAL DESCRIPTION
[1] Safety
CHAPTER 1. GENERAL DESCRIPTION
[1] Safety
Precaution
For Service Manual........... 1-1
[2] Important Service Notes (for U.K. only) ......... 1-2
[3] Specifications ................................................. 1-2
[4] Name
[3] Specifications ................................................. 1-2
[4] Name
Of
Parts ............................................... 1-4
CHAPTER 2. ADJUSTMENTS
[1] Mechanism
[1] Mechanism
Section........................................ 2-1
[2] Test
Mode....................................................... 2-2
[3] CD
Section ..................................................... 2-4
CHAPTER 3. MECHANISM BLOCKS
[1] Caution On Disassembly................................ 3-1
[2] Removing And Reinstalling The Main Parts ..... 3-4
[1] Caution On Disassembly................................ 3-1
[2] Removing And Reinstalling The Main Parts ..... 3-4
CHAPTER 4. DIAGRAMS
[1] Main Block Diagrams ..................................... 4-1
[2] CD
[1] Main Block Diagrams ..................................... 4-1
[2] CD
Block
Diagrams....................................... 4-3
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] Schematic
LAYOUT
[1] Notes On Schematic Diagram .......................6-1
[2] Types Of Transistor And LED ........................6-1
[3] Schematic
Diagram .......................................6-2
[4] Charts Of Connecting Wires ........................6-24
[5] Wiring Side Of PWB ....................................6-26
[5] Wiring Side Of PWB ....................................6-26
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......................................................8-7
PARTS GUIDE
MICRO COMPONENT SYSTEM
XL-UR27H
MODEL
XL-UR27H Micro Component System consisting of
XL-UR27H (main unit) and CP-UR27H (speaker
system).
XL-UR27H (main unit) and CP-UR27H (speaker
system).
CONTENTS
RECORDING
SHARP CORPORATION
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.
specified ones for maintaining the safety and performance of the set.
[ For Europe, U.K.]
• In the interests of user-safety the set should be restored
to its original condition and only parts identical to those
specified be used.
specified be used.
l
Note for users in U.K.
Recording and playback of any material may require
consent which SHARP is unable to give. Please refer
particularly to the provisions of Copyright Act 1956, the
Performers Protection Acts 1963 and 1972 and
subsequent statutory enactments and orders.
consent which SHARP is unable to give. Please refer
particularly to the provisions of Copyright Act 1956, the
Performers Protection Acts 1963 and 1972 and
subsequent statutory enactments and orders.
XL-UR27H
– i –
PRECAUTIONS FOR USING LEAD-FREE SOLDER
1. Employing lead-free solder
Example:
Indicates lead-free solder of tin, silver and copper.
Lead-free wire solder for servicing
Ref No.
Description
Parts No.
"MAIN, POWER, DISPLAY, USB, USB WASHER, CD PWB" of this model employs lead-free solder. The LF
symbol indicates lead-free solder, and is attached on the PWB and service manuals. The alphabetical character
following LF shows the type of lead-free solder.
symbol indicates lead-free solder, and is attached on the PWB and service manuals. The alphabetical character
following LF shows the type of lead-free solder.
2. Using lead-free wire solder
When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional
lead wire solder may cause damage or accident due to cracks.
As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40°C, we recommend
you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering
bit, contact our service station or service branch in your area.
lead wire solder may cause damage or accident due to cracks.
As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40°C, we recommend
you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering
bit, contact our service station or service branch in your area.
3. Soldering
As the melting point of lead-free solder (Sn-Ag-Cu) is about 220°C which is higher than the conventional lead
solder by 40°C,and as it has poor solder wet ability, you may be apt to keep the soldering bit in contact with the
PWB for extended period of time. However, since the land may be peeled of for the maximum heat-resistance
temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady
soldering condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corrected. Make sure to turn
on and off the power of the bit as required. If a different type of solder stays on the tip of the soldering bit, it is
alloyed with lead-free solder. Clean the bit after every use of it.
When the tip of the soldering bit is blackened during use, file it with steel wool or fine sand paper.
Be careful when replacing parts with polarity indication on the PWB silk.
solder by 40°C,and as it has poor solder wet ability, you may be apt to keep the soldering bit in contact with the
PWB for extended period of time. However, since the land may be peeled of for the maximum heat-resistance
temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady
soldering condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corrected. Make sure to turn
on and off the power of the bit as required. If a different type of solder stays on the tip of the soldering bit, it is
alloyed with lead-free solder. Clean the bit after every use of it.
When the tip of the soldering bit is blackened during use, file it with steel wool or fine sand paper.
Be careful when replacing parts with polarity indication on the PWB silk.
PWB-A
92LPWB7307MANS
MAIN (A1), POWER (A2), DISPLAY (A3) , USB (A4), USB WASHER (A5)
PWB-B 92LPWB7307CDUS CD
XL-UR27H
–2
CHAPTER 1: GENERAL DESCRIPTION
[1] Safety Precaution For Service Manual
This product is classified as a CLASS 1 LASER PRODUCT.
WARNINGS
THE AEL (ACCESSIBLE EMISSION LEVEL) OF LASER POWER OUTPUT FOR THIS MODEL IS SPECIFIED TO
BE LOWER THAN CLASS
BE LOWER THAN CLASS
I
REQUIREMENTS. HOWEVER, THE FOLLOWING PRECAUTIONS MUST BE OBSERVED
DURING SERVICING TO PROTECT YOUR EYES AGAINTS 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.
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.
HAVE ALREADY BEEN ADJUSTED PRIOR TO SHIPPING.
3-
NO ADJUSTMENT TO THE LASER POWER SHOULD BE ATTEMPTED WHEN REPLACING OR SERVICING
THE PICKUP.
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.
THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
[2] 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.
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
Test voltage
4,240 VPEAK
3,000 VRMS
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.
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
AC POWER
SUPPLY CORD
CONNECT THE PROBE
TO GND OF CHASSIS
SCREW
TO GND OF CHASSIS
SCREW
WITHSTANDING
VOLTAGE TESTER
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL.
1 – 1
XL-UR27H
– 4
[3]
Specifications
XL-UR27H
XL-UR27H for U.K.
Amplifier
Output power
PMPO: 52 W
MPO: 26 W (13 W + 13 W) (10% T.H.D.)
RMS: 20 W (10 W + 10 W) (10% T.H.D.)
RMS: 14 W (7 W + 7 W) (1% T.H.D.)
MPO: 26 W (13 W + 13 W) (10% T.H.D.)
RMS: 20 W (10 W + 10 W) (10% T.H.D.)
RMS: 14 W (7 W + 7 W) (1% T.H.D.)
Output terminals
Speakers: 8 ohms
Headphones: 16 - 50 ohms
(recommended: 32 ohms)
Headphones: 16 - 50 ohms
(recommended: 32 ohms)
Input terminals
Audio In (audio signal):
250 mV
250 mV
General
USB
Power source
AC 220 - 240 V ~ 50 Hz
Power consumption
Power on: 35 W
Power stand-by: 0.6 W(*)
Power stand-by: 0.6 W(*)
Dimensions
Width: 200 mm (7-7/8")
Height: 130 mm (5-1/8")
Depth: 221 mm (8-3/4")
Height: 130 mm (5-1/8")
Depth: 221 mm (8-3/4")
Weight
2.7 kg (5.95 lbs.)
(*) This power consumption value is obtained when the
demonstration mode is cancelled in the power stand-by mode.
USB host interface
Complies with USB 1.1 (Full Speed)/ 2.0
Mass Storage Class.
Support Bulk only and CBI protocol.
Mass Storage Class.
Support Bulk only and CBI protocol.
Support file
MPEG 1 Layer 3
WMA (Non DRM)
WMA (Non DRM)
Bitrate support
MP3 (32 ~ 320 kbps)
WMA (64 ~ 160 kbps)
WMA (64 ~ 160 kbps)
Other
Maximum total number of MP3/WMA
files is 65280.
Maximum total number of folders is 255
INCLUSIVE of root directory.
The ID3TAG information supported are
TITLE, ARTIST and ALBUM only.
Supports ID3TAG version 1 and version 2.
Maximum number of folders that can be
recorded is 254.
Maximum number of files in a folder that
can be recorded is 256.
files is 65280.
Maximum total number of folders is 255
INCLUSIVE of root directory.
The ID3TAG information supported are
TITLE, ARTIST and ALBUM only.
Supports ID3TAG version 1 and version 2.
Maximum number of folders that can be
recorded is 254.
Maximum number of files in a folder that
can be recorded is 256.
File system support
Support USB devices with Microsoft
Windows/DOS/FAT 12/ FAT16/ FAT 32.
2 kbyte block length for sector.
CD player
Type
1 disc top loading
Signal readout
Non-contact, 3-beam semiconductor laser
pickup
pickup
D/A converter
Multi bit D/A converter
Frequency response 20 - 20,000 Hz
Dynamic range
90 dB (1 kHz)
Amplifier
Output power
MPO: 26 W (13 W + 13 W) (10% T.H.D.)
RMS: 20 W (10 W + 10 W) (10% T.H.D.)
RMS: 14 W (7 W + 7 W) (0.9% T.H.D.)
RMS: 20 W (10 W + 10 W) (10% T.H.D.)
RMS: 14 W (7 W + 7 W) (0.9% T.H.D.)
Output terminals
Speakers: 8 ohms
Headphones: 16 - 50 ohms
(recommended: 32 ohms)
Headphones: 16 - 50 ohms
(recommended: 32 ohms)
Input terminals
Audio In (audio signal):
250 mV
250 mV
General
Power source
AC 220 - 240 V ~ 50 Hz
Power consumption
Power on: 35 W
Power stand-by: 0.6 W(*)
Power stand-by: 0.6 W(*)
Dimensions
Width: 200 mm (7-7/8")
Height: 130 mm (5-1/8")
Depth: 221 mm (8-3/4")
Height: 130 mm (5-1/8")
Depth: 221 mm (8-3/4")
Weight
2.7 kg (5.95 lbs.)
(*) This power consumption value is obtained when the
demonstration mode is cancelled in the power stand-by mode.
CD player
Type
1 disc top loading
Signal readout
Non-contact, 3-beam semiconductor laser
pickup
pickup
D/A converter
Multi bit D/A converter
Frequency response 20 - 20,000 Hz
Dynamic range
90 dB (1 kHz)
Tuner
Speaker
Frequency range
FM: 87.5 - 108 MHz
Other
Maximum station can be stored is 40 preset.
Type
2-way speaker system
10 cm (4") Woofer, 5 cm (2") Tweeter
10 cm (4") Woofer, 5 cm (2") Tweeter
Maximum input power 20 W
Rated input power
10 W
Impedance
8 ohms
Dimensions
Width: 211 mm (8-1/4")
Height: 136 mm (5-5/16")
Depth: 184 mm (7-3/16")
Height: 136 mm (5-5/16")
Depth: 184 mm (7-3/16")
Weight
1.7 kg (3.75 lbs.)/each
USB
USB host interface
Complies with USB 1.1 (Full Speed)/ 2.0
Mass Storage Class.
Support Bulk only and CBI protocol.
Mass Storage Class.
Support Bulk only and CBI protocol.
Support file
MPEG 1 Layer 3
WMA (Non DRM)
WMA (Non DRM)
Bitrate support
MP3 (32 ~ 320 kbps)
WMA (64 ~ 160 kbps)
WMA (64 ~ 160 kbps)
Other
Maximum total number of MP3/WMA
files is 65280.
Maximum total number of folders is 255
INCLUSIVE of root directory.
The ID3TAG information supported are
TITLE, ARTIST and ALBUM only.
Supports ID3TAG version 1 and version 2.
Maximum number of folders that can be
recorded is 254.
Maximum number of files in a folder that
can be recorded is 256.
files is 65280.
Maximum total number of folders is 255
INCLUSIVE of root directory.
The ID3TAG information supported are
TITLE, ARTIST and ALBUM only.
Supports ID3TAG version 1 and version 2.
Maximum number of folders that can be
recorded is 254.
Maximum number of files in a folder that
can be recorded is 256.
File system support
Support USB devices with Microsoft
Windows/DOS/FAT 12/ FAT16/ FAT 32.
2 kbyte block length for sector.
Tuner
Speaker
Frequency range
FM: 87.5 - 108 MHz
Other
Maximum station can be stored is 40 preset.
Type
2-way speaker system
10 cm (4") Woofer, 5 cm (2") Tweeter
10 cm (4") Woofer, 5 cm (2") Tweeter
Maximum input power 20 W
Rated input power
10 W
Impedance
8 ohms
Dimensions
Width: 211 mm (8-1/4")
Height: 136 mm (5-5/16")
Depth: 184 mm (7-3/16")
Height: 136 mm (5-5/16")
Depth: 184 mm (7-3/16")
Weight
1.7 kg (3.75 lbs.)/each
1 – 2
