Sharp XL-505H User manual

– 1 –
XL-505H,505E,507E/CP-505,505E,507
SERVICE MANUAL
No. S7752XL505HE/
CONTENTS Page
SAFETY PRECAUTION FOR SERVICE MANUAL .......................................................................................................... 2
IMPORTANT SERVICE NOTES (XL-505E FOR UK/XL-507E ONLY)............................................................................. 3
SPECIFICATIONS ............................................................................................................................................................ 3
NAMES OF PARTS .......................................................................................................................................................... 4
OPERATION MANUAL..................................................................................................................................................... 6
DISASSEMBLY................................................................................................................................................................. 7
REMOVING AND REINSTALLING THE MAIN PARTS.................................................................................................... 8
ADJUSTMENT.................................................................................................................................................................. 9
BLOCK DIAGRAM .......................................................................................................................................................... 16
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD............................................................................................ 20
VOLTAGE ....................................................................................................................................................................... 26
NOTES ON SCHEMATIC DIAGRAM ............................................................................................................................. 27
TYPE OF TRANSISTOR AND LED ................................................................................................................................ 27
WAVEFORMS OF CD CIRCUIT..................................................................................................................................... 28
TROUBLESHOOTING (CD SECTION) .......................................................................................................................... 29
FUNCTION TABLE OF IC .............................................................................................................................................. 34
LCD SEGMENT .............................................................................................................................................................. 41
REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING OF METHOD (XL-505E FOR UK/XL-507E ONLY)
XL-505H
XL-505E
XL-507E
CP-505
CP-505E
CP-507
XL-505H and CP-505 constitute XL-505H.
XL-505E and CP-505E constitute XL-505E.
XL-507E and CP-507 constitute XL-507E.
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
SHARP CORPORATION
• Note for users in UK
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 Dramatic and Musical
Performers Protection Act 1956, the Performers Protection Acts
1963 and 1972 and to any subsequent statutory enactments and
orders.
Illustration: XL-505H/CP-505

XL-505H,505E,507E/CP-505,505E,507
– 2 –
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
forthismodelisspecifiedtobelowerthanClassIRequirements.
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
outerthanthelead-inposition,theLaserwilllightforseveral
seconds to detect a disc. Do not look into the Pickup Lens.
(2) The Laser Power Output of the Pickup inside the unit and
replacementservicepartshavealreadybeenadjustedprior
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-Useofcontrols oradjustments, orperformance
of procedures other than those specified herein may result
in hazardous radiation exposure.
LASER KLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
CAUTION-INVISIBLE LASER RADIATION WHEN OPEN. DO NOT STARE INTO
BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS.
VARNING-OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD. STIRRA
EJ IN I STRALEN OCH BETRAKTA EJ STRALEN MED OPTISKA INSTRUMENT.
ADVERSEL-USYNLIG LASERSTRALING VED ABNING. SE IKKE IND I
STRALEN-HELLER IKKE MED OPTISKE INSTRUMENTER.
VARO! AVATTAESSA OLET ALTTIINA NAKYMATON LASERSATEILYLLE.
ALA TUIJOTA SATEESEEN ALAKA KATSO SITA OPTISEN LAITTEEN LAPI.
VARNING-OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD.
STIRRA EJ IN I STRALEN OCH BETRAKTA EJ STRALEN GENOM OPTISKT
INSTRUMENT.
ADVERSEL-USYNLIG LASERSTRALING NAR DEKSEL APNES. STIRR IKKE
INN I STRALEN ELLER SE DIREKTE MED OPTISKE INSTRUMENTER.
VAROITUS! LAITTEEN KÄYTTÄMINEN MUULLA KUIN
TÄSSÄ
KÄYTTÖOHJEESSA MAINITULLA TAVALLA SAATTAA
ALTISTAA KÄYTTÄJÄN TURVALLISUUSLUOKAN 1
YLITTÄVÄLLE NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE.
VARNING - OM APPARATEN ANVÄNDS PÅ ANNAT SÄTT
ÄN I DENNA BRUKSANVISNING SPECIFICERAS. KAN
ANVÄNDAREN UTSÄTTAS FÖR OSYNLIG
LASERSTRÅLNING, SOM ÖVERSKRIDER GRÄNSEN
FÖR LASERKLASS 1.
(XL-505H)
(XL-505E/507E)

– 3 –
XL-505H,505E,507E/CP-505,505E,507
Cassette deck section
Frequency response: 50 - 14,000 Hz (Normal tape)
Signal/noise ratio: 55 dB
(XL-505H/505E)
Signal/noise ratio: 50 dB
(XL-507E)
Wow and flutter: 0.3 % (DIN 45 511)
(XL-505H/505E)
Wow and flutter: 0.25 % (WRMS)
(XL-507E)
Type: Full range speaker system
Speakers: 10 cm (4") full-range speaker
Rated input power: 5 W
Maximum input power: 10 W
Impedance: 4 ohms
Dimensions: Width; 145 mm (5-3/4")
(CP-505/507) Height; 240 mm (9-1/2")
Depth; 183 mm (7-1/4")
Dimensions: Width; 145 mm (5-3/4")
(CP-505E) Height; 240 mm (9-1/2")
Depth; 133 mm (5-1/4")
Weight: 1.1 kg (2.4 lbs.)/each
(CP-505/507)
Weight: 1.0 kg (2.2 lbs.)/each
(CP-505E)
General
Power source: AC 230 V, 50 Hz
Power consumption: 52 W
Dimensions: Width; 160 mm (6-5/16")
Height; 240 mm (9-1/2")
Depth; 250 mm (9-7/8")
Weight: 2.6 kg (5.7 lbs.)
Amplifier section
Output power: PMPO; 28 W (total)
(XL-505H/505E) MPO; 14 W (7 W + 7 W) (DIN 45 324)
RMS; 10 W (5 W + 5 W) (DIN 45 324)
Output power: MPO; 14 W (7 W + 7 W) (10 % T.H.D.)
(XL-507E) RMS; 10 W (5 W + 5 W) (10 % T.H.D.)
Output terminals: Speakers; 4 ohms
Headphones; 16-50 ohms
(recommended; 32 ohms)
Tuner section
Frequency range: FM; 87.5 - 108 MHz
AM; 522 - 1,620 kHz
Compact disc player section
Type: Compact disc player
Signal readout: Non-contact, 3-beam semi-conductor
laser pickup
D/A Converter: 1-bit D/A converter
Filter: 8-times oversampling digital filter
Frequency response: 20 - 20,000 Hz
Wow and flutter: Unmeasurable
(less than 0.001% W.peak)
SPECIFICATIONS
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
Beforereturningthe unitto thecustomer aftercompletion ofa
repairoradjustment itisnecessaryfor thefollowingwithstand
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 buzzor sounds.
SHORT-CIRCUIT
AC POWER
SUPPLY CORD
CONNECT THE PROBE
TO GND TERMINAL
OF PHONO TERMINAL
PROBE
AC
UNIT
WITHSTANDING
VOLTAGE TESTER
+
-
OUT
OF CHASSIS
SCREW
IMPORTANT SERVICE NOTES (XL-505E FOR UK/XL-507E ONLY)
Specifications for this model are subject to change without
prior notice.
XL-505H/505E/507E
CP-505/505E/507

XL-505H,505E,507E/CP-505,505E,507
– 4 –
NAMES OF PARTS
Front Panel
1. Function/Band/Track Number Indicator
2. Volume Indicator
3. Timer Indicator
4. Record Indicator
5. Sleep Indicator
6. Repeat Indicator
7. Play Indicator
8. Extra Bass/Equalizer Indicator
9. Random Indicator
10. Memory Indicator
11. FM Stereo Mode Indicator
12. FM Stereo Indicator
13. CD Compartment
14. On/Stand-by Switch
15. Remote Control Sensor
16. Record Pause/Beat Cancel Button
17. Memory/Set Button
18. (CD) Track Down/Review Button
(TAPE) Rewind Button
(TUNER) Preset Down Button
19. Headphones Socket
20. CD Eject Button
21. Function Selector Button
22. Band Selector Button
23. Extra Bass/Equalizer Mode Button
24. Volume Up/Down Buttons
25. (CD) Play/Pause Button
(TAPE) Play Button
(TUNER) Tuning Up Button
26. (CD/TAPE) Stop Button
(TUNER) Clear Button
27. (CD) Track Up/Cue Button
(TAPE) Fast Forward Button
(TUNER) Preset Up Button
28. Cassette Compartment
Rear Panel
1. AC Power Input Socket
2. FM/AM Loop Aerial Socket
3. Speaker Terminals
XL-505H/505E/507E
VOL
EQ
RANDOM MEMORY ST
REC SLEEP
kHz
MHz
2345
678 91011
12
13
1
20
22
15
16
17
18
19
23
24
25
26
27
14 21
28
2
3
1

– 5 –
XL-505H,505E,507E/CP-505,505E,507
Speaker Section
1. Full-Range Speaker
2. Bass Reflex Duct
3. Speaker Wire
Remote Control
1. Remote Control Transmitter LED
2. On/Stand-by Button
3. (CD) Repeat/Random Button
4. (CD/TUNER) Memory/Set Button
5. (CD/TUNER) Clear Button
6. Timer/Set Button
7. Sleep Button
8. (CD/TAPE) Stop Button
9. (CD) Play/Pause Button
(TAPE) Play Button
10. (CD) Track Up/Cue Button
(TAPE) Fast Forward Button
(TUNER) Preset Up Button
11. (CD) Track Down/Review Button
(TAPE) Rewind Button
(TUNER) Preset Down Button
12. Tuning Up/Down Buttons
13. Timer Button
14. Timer Up/Down Buttons
15. Function Selector Button
16. Band Selector Button
17. Extra Bass/Equalizer Mode Button
18. Volume Up/Down Buttons
CP-505/505E/507
XL-505H/505E/507E
1
23
ON/
STAND-BY
/RANDOM
TIMER/
SET
PRESET
MEMORY/
SET TUNING
TIMER
VOLUME
CLEAR
SLEEP
FUNCTION BAND
X-BASS/
EQUALIZER
TIMER
1
2
3
4
5
6
8
12
13
11
10
9
17
14
15 18
16
7

XL-505H,505E,507E/CP-505,505E,507
– 6 –
OPERATION MANUAL
SETTING THE CLOCK
1
Press the ON/STAND-BY switch to enter the stand-by mode.
2
Press the MEMORY/SET button.
3
Press the PRESET ( or ) button to select the time display mode. "0:00" →The 24-hour display will appear. (0:00 - 23:59) "AM 12:00" →The 12-hour display will appear. (AM 12:00 - PM 11:59)
Note that this can only be set when the unit is first installed or it has been reset (see page 14).
4
Press the MEMORY/SET button.
5
Press the PRESET ( or ) button to adjust the hour.
Press the PRESET button once to advance the time by 1 hour. Hold it down to advance continuously. When the 12-hour display is selected, "AM" will change auto- matically to "PM".
6
Press the MEMORY/SET button.
7
Press the PRESET ( or ) button to adjust the minutes.
Press the PRESET button once to advance the time by 1 minute. Hold it down to change the time in 5 minute intervals. The hour setting will not advance even if minutes advance from "59" to "00".
8
Press the MEMORY/SET button.
The clock starts operating from "0" seconds. (Seconds are not displayed.)
Note:
In the event of a power failure or when the AC power lead is disconnected, the clock display will go out. When the AC power supply is restored, the clock display will flash on and off to indicate the time when the power failure occurred or when the AC power lead was disconnected.
ON/ STAND-BY
ON/ STAND-BY
MEMORY/ SET
MEMORY/ SET
PRESET ( / )
PRESET ( / )
AM 12:000:00
2
3
4 5 6 7 8
If this happens, follow the procedure below to change the clock time.
To change the clock time: 1
Press the ON/STAND-BY switch to enter the stand-by mode.
2
Perform steps 4 - 8 above.
To change the time display mode:
1
Perform steps 1 - 3 in the section "RESETTING THE MICRO- COMPUTER", on page 14.
2
Perform steps 1 - 8 above.
In this example, the clock is set for the 24-hour (0:00) system.
PREPARATION FOR USE
15
15
Notes concerning use:
Replace the batteries if control distance decreases or operation becomes erratic. Periodically clean the transmitter LED on the remote control and the sensor on the main unit with a soft cloth. Exposing the sensor on the main unit to strong light may in- terfere with operation. Change the lighting or the direction of the unit. Keep the remote control away from moisture, excessive heat, shock, and vibrations.
0.2 m - 6 m (8" - 20')
RESETTING THE MICROCOMPUTER
Reset the microcomputer under the following conditions:
To erase all of the stored memory contents (clock and timer settings, tuner and CD presets). If the display is not correct. If the operation is not correct.
1
Press the ON/STAND-BY switch to enter the stand-by mode.
2
Unplug the AC power lead from the AC INPUT socket on this unit.
3
Whilst pressing down the MEMORY/SET button and the X- BASS/EQUALIZER button, plug the AC power lead into the AC INPUT socket on this unit.
1
2,3
3
3
Caution:
The operation explained above will erase all data stored in memory, such as clock and timer settings, tuner and CD pres- ets.

– 7 –
XL-505H,505E,507E/CP-505,505E,507
1 Top Cabinet 1. Screw...................(A1) x4 7-1
2. Socket..................(A2) x3
3. Screw...................(A3) x1
2 Side Panel 1. Screw...................(B1) x7 7-1
(Left/Right)
3 Back Board 1. Screw...................(C1) x2 7-1
4 Front Panel 1. Screw...................(D1) x9 7-2
2. Socket..................(D2) x2
5 Main PWB/ 1. Screw...................(E1) x1 7-2
Display PWB/ 2. Socket..................(E2) x3
CD Servo PWB
6 Power Supply PWB 1. Screw...................(F1) x4 7-2
7 Tape Mechanism 1. Screw...................(G1) x4 7-3
8 CD Mechanism 1. Screw...................(H1) x3 7-4
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 cassette tape and compact 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.Takeoffnylonbandsorwireholderswheretheyneedbe
removed when disassembling the unit. After servicing
theunit, besureto rearrangethe leadswhere theywere
before disassembling.
4. Take suffcient care on static electricity of integrated
circuits and other circuits when servicing.
Figure 7-2
Figure 7-3
STEP REMOVAL PROCEDURE FIGURE
Figure 7-1
XL-505H/505E/507E
STEP REMOVAL PROCEDURE FIGURE
1 Speaker 1. Net....................... (A1) x1 7-5
2. Screw .................. (A2) x4
CP-505/505E/507
(A1)x1
ø3x10mm
(A1)x1
ø3x10mm
(B1)x2
ø3x10mm (C1)x2
ø3x10mm
(B1)x2
ø3x10mm
(B1)x3
ø3x10mm
(A1)x2
ø3x10mm
(A2)x2
(A2)x1
CD
Mechanism
(A3)x1
ø3x10mm
Swicth
PWB
Top Cabinet
Top
Cabinet
Side Panel
Front
Panel
Rear Panel
(D1)x6
ø3x10mm
(E1)x1
ø3x10mm
(D1)x1
ø3x10mm
CD Servo PWB
Main PWB
Power Supply
PWB
Power
Transformer
Front Panel
Display PWB
(F1)x3
ø4x8mm
(F1)x1
ø3x10mm
(D1)x2
ø3x10mm
(D2)x1
(E2)x1
(D2)x1
(E2)x2 CD Servo
PWB
Main
PWB
Tape MechanismOpen
(G1)x4
ø3x10mm
Front Panel
CD Mechanism
(H1)x3
ø2.6x10mm
Top Cabinet
(A2)x4
ø4x15mm
Net
(A1x1)
Speaker
Speaker Box
Screw
driver
Direction of handle
XL-505H/505E/507E
Figure 7-4
CP-505/505E/507
Figure 7-5

XL-505H,505E,507E/CP-505,505E,507
– 8 –
Figure 8
How to remove the pickup (See Fig. 8)
1. Remove the mechanism cover, paying attention to the
pawls (A1) x 4 pcs.
2. Remove the screws (A2) x 2 pcs., to remove the shaft (A3)
x 1 pc.
3. Remove the stop washer (A4) x 1 pc., to remove the gear
(A5) x 1 pc.
4. Remove the pickup.
Note:
After removing the optical pickup connector wrap the front
end of connector in conductive aluminium foil so as to
prevent damage of optical pickup by static electricity.
REMOVING AND REINSTALLING THE MAIN PARTS
CD MECHANISM SECTION
Perform steps 1 and 8 of the disassembly method to remove
the CD mechanism.
Pickup Unit
( A2 ) x2
ø2.6 x6mm
( A1 ) x2
CD Mechanism
Shaft
( A3 ) x1
Gear
( A5 ) x1
StopWasher
( A4 ) x1
Mechanism Cover ( A1 ) x2

– 9 –
XL-505H,505E,507E/CP-505,505E,507
MECHANISM SECTION
• Driving Force Check
Torque Meter Specified Value
Play: TW-2412 Over 80 g
• Torque Check
Torque Meter
Play: TW-2111 30 to 70 g. cm
Fast forward: TW-2231 50 to 140 g.cm
Rewind: TW-2231 50 to 140 g.cm
Specified
Value
Adjusting
Point Instrument Connection
Test Tape
MTT-111 In Motor 3,000 ±Headphones
90 Hz
ADJUSTMENT
Specified Value
• Tape Speed
fL: Low-range frequency
fH: High-renge frequency
IF 450 kHz 1,620 kHz T351 *1
Band — 522 kHz (fL): T306 *2
Coverage 1.1 ±0.1 V
Tracking 990 kHz 990 kHz (fL): T302 *1
Test Stage Frequency Frequency
Display Setting/
Adjusting
Parts
Instrument
Connection
Adjusting
Parts Instrument Connection
Display
Frequency
98.00 MHz 98.00 MHz VR351*1 Input: CNP301
(25 dBµV) Output: Speaker
Terminal
Figure 9-1 ADJUSTMENT POINT
TUNER SECTION
TAPE MECHANISM
M901
Motor
Volume in motor
• FM RF
Signal generator: 1 kHz, 75 kHz dev., FM modulated
Band — 87.50 MHz (fL): L303 *1
Coverage 3.4 ±0.1 V
RF 98.00 MHz 98.00 MHz L302 *2
(10~30 dB)
Test Stage Frequency Frequency
Display Setting/
Adjusting
Parts
Instrument
Connection
*1. Input: Antenna, Output: TP301
*2. Input: Antenna, Output: Speaker Terminal
• Detection
Signal generator: 10.7 MHz, FM sweep generator
IF 10.7 MHz 98.00 MHz T304(Turn Input: Pin 1 of
the core of IC301
T304 fully Output: TP302
counter-
clockwise.
Test
Stage Frequency Frequency
Display Setting/
Adjusting
Parts
Instrument
Connection
*1. Input: Antenna, Output: Speaker Terminal
*2. Input: Input is not connected, Output: TP301
• Setting the Test Mode
KeepingtheBANDbuttonandMEMORYbuttonpressed,turn
on POWER. Then, the frequency is initially set in the memory
as shown in Table. Call it with the , button to use it
for adjustment and check of tuner circuit.
Preset No. FM Preset No. AM
1 87.50 MHz 6 522 kHz
2 108.00 MHz 7 1,620 kHz
3 98.00 MHz 8 603 kHz
4 90.00 MHz 9 1,404 kHz
5 106.00 MHz 10 990 kHz
11~40
• FM Mute Level
Signal generator: 1 kHz, 40 kHz dev., FM modulated
Adjust so that an output signal appears.
Figure 9-2 ADJUSTMENT POINTS
CNP301
ANTENNA
MAIN PWB
L302
IC301
1
T302
TP301
TP302
T304
FM IF
AM IF
AM
TRACKING
T306 AM BAND
COVERAGE
FM MUTE
LEVEL
T351
VR351
L303
FM BAND
COVERAGE
FM RF
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated

XL-505H,505E,507E/CP-505,505E,507
– 10 –
Figure 10-1 Figure 10-2
1. This CD unit need adjustment as follow.
CD SECTION
Figure 10-3
CD Test Mode Adjustment Part Value/Adjusting Method Instrument Connection
Step 1 VR803 (Focus Offset) DC + 40 mV (FEL>RFO) FEI (R826) and VRO
(1-Pin of TP801)
Step 4 VR802 (Tracking Error Balance) *1 (See Fig. 10-1) TSO (3-Pin of TP801)
and VRO (1 Pin of TP801)
*1: Adjust to obtaiin vertically symmetrical waveform (Fig. 10-1) with respect toreference DC level. The reference level is VRO
(Approx DC 2.1V).
2. This CD unit have the following automatic adjustment function. Automatic adjustment item.
2-1: Focus Servo Gain (Fig. 10-2)
Focus Gain Adjustment is performed when disc is changed.
2-2: Tracking Servo Gain (Fig. 10-3)
Tracking Gain Adjustment is performed when disc is changed and disc is playbacked.
TSO
VRO 1SYMMETRICAL
UP AND DOWN
FET
FSO
1
2
TSO
TS2O
1
2
Figure 10-4 ADJUSTMENT POINTS
VR802 VR803 TP801
TRACKING
ERROR
BALANCE
FOCUS
OFFSET T
S
O
N
CV
R
O
321
321
CD SERVO PWB