Sharp XL-HP700 User manual

XL-HP700
No. S1304XLHP700/
CONTENTS
Page
IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)....................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................. 2
NAMES OF PARTS ........................................................................................................................................................... 3
DISASSEMBLY.................................................................................................................................................................. 5
REMOVING AND REINSTALLING THE MAIN PARTS..................................................................................................... 7
ADJUSTMENT ................................................................................................................................................................... 9
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 12
TYPES OF TRANSISTOR AND LED............................................................................................................................... 12
BLOCK DIAGRAM ........................................................................................................................................................... 13
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD............................................................................................. 16
VOLTAGE ........................................................................................................................................................................ 33
WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 34
TROUBLESHOOTING ..................................................................................................................................................... 35
FUNCTION TABLE OF IC................................................................................................................................................ 39
FL DISPLAY..................................................................................................................................................................... 46
REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING OF THE SET (FOR U.S.A. ONLY)
SERVICE MANUAL
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
SHARP CORPORATION
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
MICRO COMPONENT SYSTEM
MODEL XL-HP700
XL-HP700MicroComponentSystemconsistingofXL-HP700
(main unit) and CP-HP700 (speaker system).

XL-HP700
– 2 –
SPECIFICATIONS
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.
IMPORTANT SERVICE NOTES (FOR 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.
1. Inspect all lead dress to make certain that leads are not pinched
orthathardwareisnotlodgedbetweenthechassisandothermetal
parts in the audio product.
2. Inspectallprotectivedevicessuchasinsulatingmaterials,cabinet,
terminal board, adjustment and compartment covers or shields,
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.
* Usingtwoclipleads,connecta1.5kohm,10wattresistorparalleled
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
tomeasuretheACvoltagedropacrosstheresistor(Seediagram).
* Connect the resistor connection to all exposed metal parts having
areturn path tothe chassis (antenna,metal cabinet, screwheads,
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.
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.
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
TEST PROBE
0.15 µ F
1.5k ohms
10W
VTVM
AC SCALE
■General
■Amplifier
Power source AC 120 V, 60 Hz
Power
consumption 176 W
Dimensions Width: 8-1/8" (205 mm)
Height: 10-1/4" (260 mm)
Depth: 14-7/16" (366 mm)
Weight 16.8 lbs. (7.6 kg)
Output power 100 watts minimum RMS per channel into 6
ohms from 60 Hz to 20 kHz, 10% total har-
monic distortion
Output terminals Speakers: 6 ohms
Headphones: 16 - 50 ohms (recommended:
32 ohms)
Subwoofer pre-out (audio signal): 200 mV/
10 k ohms at 70 Hz
Input terminals Video/Auxiliary (audio signal): 500 mV/47 k
ohms
■CD player
■Tuner
■Cassette deck
■Speaker
Type 3-disc multi-play compact disc changer
player
Signal readout Non-contact, 3-beam semiconductor laser
pickup
D/A converter 1-bit D/A converter
Frequency
response 20 - 20,000 Hz
Dynamic range 90 dB (1 kHz)
Frequency range FM: 87.5 - 108 MHz
AM: 530 - 1,720 kHz
Frequency
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 200 W
Rated input power 100 W
Impedance 6 ohms
Dimensions Width: 7-1/16" (180 mm)
Height: 10-1/4" (260 mm)
Depth: 11-1/4" (285 mm)
Weight 7.9 lbs. (3.6 kg)/each

– 3 –
XL-HP700
NAMES OF PARTS
■Front panel
1.Disc Trays
2.Power On/Stand-by Button
3.Timer/Sleep Button
4.Clock Button
5.Tuning and Time Down Button
6.Tuning and Time Up Button
7.Timer Set Indicator
8.Headphone Jack
9.CD Eject Buttons
10.CD Direct Play Buttons
11.Equalizer Mode Select Button
12.Extra Bass/Demo Mode Button
13.Volume Control
14.Cassette Compartment
15.Tape Reverse Play Button
16.CD or Tape Stop Button
17.CD Play or Repeat, Tape Forward Play Button
18.CD Track Down or Fast Reverse, Tape Fast Wind,
Tuner Preset Down Button
19.CD Track Up or Fast Forward, Tape Fast Wind,
Tuner Preset Up Button
20.CD Button
21.Tape Record Pause Button
22.Video/Auxiliary Button
23.Tape Reverse Mode Select Button
24.Memory/Set Button
25.Tuner (Band) Button
26.Tape Button
3
2
1
4
5
6
7
8
10
9
11
13
12
14
15 17 18 19
22
20
21
23 24 2625
16
■Display
1.Disc Number Indicators
2.CD Play Indicator
3.Tape Reverse Mode Indicator
4.Tape Reverse Play Indicator
5.Tape Forward Play Indicator
6.FM Stereo Mode Indicator
7.FM Stereo Receiving Indicator
8.Memory Indicator
9.Extra Bass Indicator
10.Timer Recording Indicator
11.Timer Play Indicator
12.CD Pause Indicator
13.CD Repeat Play Indicator
14.Tape Record Indicator
15.Sleep Indicator
■Rear panel
1.Cooling Fan
2.Subwoofer Pre-output Jack
3.AC Power Cord
4.FM/AM Loop Antenna Jack
5.Video/Auxiliary (Audio Signal) Input Jacks
6.Speaker Terminals
Note:
This product is equipped with a cooling fan inside, which begins to
run at a specified volume level for better heat radiation.
■Speaker system
1.Tweeter
2.Woofer
3.Bass Reflex Duct
4.Speaker Terminals
1
2
3
5
4
21345 6789
10
11
151412 13
6
13
4
2

XL-HP700
– 4 –
■Remote control
1.Remote Control Transmitter
2.CD Direct Play Buttons
3.CD Track Down or Fast Reverse, Tape Fast Wind,
Tuner Preset Down Button
4.Clock Button
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.CD Track Up or Fast Forward, Tape Fast Wind,
Tuner Preset Up Button
13.Volume Up and Down Buttons
14.Direct Search Buttons
15.Program Clear Button
16.CD Memory Button
17.CD Stop Button
18.CD Pause Button
19.Tape Reverse Mode Select Button
20.Tape Reverse Play Button
21.Tape Stop Button
22.CD Play or Repeat Button
23.Tape Record Pause Button
24.CD Random Button
25.Tape Forward Play Button
1
2
3
4
5
6
7
8
9
10
11
12
14
13
15
16
22
23
24
25
17
18
19
20
21
Buttons with " " mark in the illustration can be operated on the re-
mote control only.

– 5 –
XL-HP700
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.Takeoffnylonbandsorwireholderswheretheyneedto
beremovedwhendisassemblingtheunit.Afterservicing
theunit,besuretorearrange the leads where they were
before disassembling.
4. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
Figure 5-2
Figure 5-1
(A1) x2
ø3x12mm
(A1) x2
ø3x12mm
(A1) x1
ø3x10mm
(B1) x3
ø3x10mm
(B1) x2
ø3x10mm
(B1) x2
ø3x10mm
(B1) x2
ø3x10mm
(B1) x1
ø3x10mm
Side Panel
(Left)
Front Panel
Top Cabinet
Side Panel
(Right)
Rear
Panel
(E1) x1
ø3x10mm
(G1) x1
ø3x10mm
(D2) x1
(C2) x2
ø3x10mm
Front Panel
CD Servo PWB
Main PWB
Hook
(D1)x1
Pull
Display PWB
Pull
Hook
(D1)x1
(D3) x2
CD Changer
Mechanism Unit
(F1) x2
ø3x6mm
Rear
Panel
(C1) x7
ø3x10mm
(C3) x1
Jack PWB
Figure 5-3
(E1) x2
ø3x10mm
(E3) x1
Front Panel
Hook
(E2)x1
(E3) x1
(E4) x2
Main PWB
Power PWB
Display PWB
Pull
Pull
Hook
(E2)x1
Tape
Mechanism
Note 1:
After removing the connector for the optical pickup from the
connector,wraptheconductivealuminiumfoilaroundthefrontend
of the connector so as to protect the optical pickup from electro-
static damage.
1 Top Cabinet 1. Screw ...................... (A1) x5 5-1
2 Side Panel 1. Screw .................... (B1) x10 5-1
(Left/Right)
3 Rear Panel 1. Screw ...................... (C1) x7 5-2
2. Screw ...................... (C2) x2
3. Flat Cable ............... (C3) x1
4 CD Changer 1. Hook........................ (D1) x2 5-2
Mechanism Unit 2. Socket ..................... (D2) x1
3. Flat Cable ............... (D3) x2
5 Front Panel 1. Screw ...................... (E1) x3 5-2,5-3
2. Hook........................ (E2) x2 5-3
3. Socket ..................... (E3) x2
4. Flat Cable ............... (E4) x2
6 Cover, Heat Sink 1. Screw .......................(F1) x4 5-2,6-1
7 Main PWB 1. Screw ...................... (G1) x2 5-2,6-1
2. Socket ..................... (G2) x2 6-1
8 Power PWB 1. Screw ...................... (H1) x4 6-1
9 Display PWB 1. Knob......................... (J1) x1 6-2
2. Screw ....................... (J2) x9
3. Flat Cable ................ (J3) x1
10 Tape Mechanism 1. Screw ...................... (K1) x4 6-2
11 Headphones PWB 1. Screw .......................(L1) x1 6-2
12 CD Servo PWB 1. Screw ......................(M1) x3 6-3
(Note 1) 2. Socket .....................(M2) x6
13 CD Changer 1. Screw ...................... (N1) x4 6-3
Mechanism Unit 2. Screw ...................... (N2) x2 6-4
3. Top Board ............... (N3) x1
4. Stabilizer Holder ..... (N4) x1
5. Disk Tray................. (N5) x3
6. Screw ...................... (N6) x3
7. Guide,Mecha Holder .. (N7) x1
8. Screw ...................... (N8) x1
9. Stopper ................... (N9) x1
10. Holder,Mecha ..... (N10) x1
11. Screw .................. (N11) x4
STEP REMOVAL PROCEDURE FIGURE

XL-HP700
– 6 –
Figure 6-1
Figure 6-2
Figure 6-3
(G1) x1
ø3x6mm
(H1) x4
ø4x8mm
(G2) x1
Main PWB
Power PWB
(G2) x1
(F1) x2
ø3x6mm
Cover,Heat Sink
(J2) x9
ø2.6x10mm
(K1) x4
ø3x10mm
(J3) x1
(L1) x1
ø3x10mm
(J1) x1
Front Panel
Display PWB
Tape
Mechanism
Open
Cassette
Holder Headphones
PWB
(M1) x3
ø3x10mm
(N1) x2
ø3x10mm
(N1) x2
ø3x10mm
(M2) x6
CD Servo PWB
CD Changer
Mechanism Unit
1 Woofer 1. Net Frame ............... (A1) x1 6-5
2. Catching Holder ...... (A2) x4
3. Screw ...................... (A3) x4
4. Screw ...................... (A4) x4
2 Tweeter 1. Screw ...................... (B1) x2 6-5
STEP REMOVAL PROCEDURE FIGURE
Figure 6-5
Net Frame
(A1) x1
(A2) x2(A3) x2
ø3x12mm
(A3) x2
ø3x12mm
(A4) x4
ø4x12mm
Woofer
Tweeter
(B1) x2
ø3x10mm
(A2) x2
Figure 6-4
(N2) x2
ø2 x7mm (N6) x1
ø2.6 x12mm
(N6) x2
ø2 x6mm
(N11) x4
ø2.6 x10mm
(N4) x1
Stabilizer Holder
Push
Spring
Disc Tray 1
Disc Tray 2 Press in turns the arrow
parts, starting with the
uppermost one, to
withdraw the disc trays.
Disc Tray 3
Pawl
CD
Mechanism
Top Board
(N3) x1
(N7) x1
(N10) x1
1
(N8) x1
ø3 x3mm
(N5) x3 2
3
(N9) x1
Turn clockwise the
main cam to raise the
CD mechanism up to
the uppermost position.

– 7 –
XL-HP700
REMOVING AND REINSTALLING THE MAIN PARTS
TAPE MECHANISM SECTION
Perform steps 1 to 10 of the disassembly method to remove
the tape mechanism.
How to remove the Record/Playback Head
(See Fig. 7-1)
1.Whenyouremovethescrews (A1)x2pcsand (A2)x1pc.,
the record/playback head can be removed.
How to remove the Pinch Roller
(See Fig. 7-2)
1. Carefully bend the pinch roller pawl in the direction of the
arrow <A>, and remove the pinch roller (B1) x 1 pc., in the
direction of the arrow <B>.
Note:
When installing the pinch roller, pay attention to the spring
mounting position.
How to remove the Belt
(See Fig. 7-3)
1. Remove the main belt (C1) x 1 pc., from the motor side.
2. Remove the FF/REW belt (C2) x 1 pc.
How to remove the Motor (See Fig. 7-4)
1. Remove the screws (D1) x 2 pcs., to remove the motor.
Figure 7-1
Figure 7-2
Figure 7-3
Figure 7-4
(A1)x2
Ø2x6mm
(A2)x1
Ø2x9mm
Record/Playback
Head
Erase Head
Clutch Ass'y
Pinch Roller
(B1)x1 <A>
<B>
Pinch
Roller
Pawl
Pull
Main Belt
(C1)x1
FF/REW
Belt
(C2)x1
Motor
FF/REW
Clutch
Flywheel
(D1)x2
Ø2.6x5mm
Motor
Clutch Ass'y

XL-HP700
– 8 –
HowtoremovetheTrayMotorandtheMainCam
Motor (See Fig. 8-2)
1. Remove the CD changer mechanism unit by the method
described in page 7, and disassemble as shown in the
figure.
2. Remove the belt (B1) x 2 pcs from the motor side.
3. Remove the screws (B2) x 4 pcs.
4. Remove the tray motor and the main cam motor.
Figure 8-2
CD MECHANISM SECTION
Perform steps 1 to 4 and 12 to 13 of the disassembly method
to remove the CD mechanism.
How to remove the Optical Pickup
(See Fig. 8-1)
1. Remove the screws (A1) x 2 pcs and shaft (A2) x 1 pc.
2. Remove the stop washer (A3) x 1 pc and gear (A4) x 1 pc.
3. Remove the optical pickup.
Note:
After pulling out the optical pickup connector, wrap the tip of
it with conductive aluminium foil or the like to protect the
optical pickup from the static electricity.
Figure 8-1
Tray Motor
Main Cam
Motor
Belt
(B1) x1 Belt
(B1) x1
(B2) x2
ø2.6 x4mm
(B2) x2
ø2.6 x4mm
(A1) x2
ø2.6 x5mm
CD
Mechanism
Stop Washer
(A3) x1
Optical Pickup
Gear
(A4) x1
Shaft
(A2) x1
CD Disk
Disk Holder
Turn the main cam clockwise
and raise the CD mechanism
and disk holder up to the
uppermost position.
CD Changer
Mechanism Unit
(When CD is in playback state)
Disk Tray 1
Disk Tray 2
Disk Tray 3
Disc Holder
CD Mechanism
Press in turns the arrow
parts, starting with the
uppermost one, to
withdraw the disc trays
Turn the main cam clockwise
and raise the CD mechanism
and disk holder up to the
uppermost position.
CD Changer
Mechanism unit
(When CD exists in the tray)
1
2
3
CD Disk
Figure 8-3
Figure 8-4
How to remove the CD Disc
(When CD is in the playback state) (See Fig. 8-3 )
1. Remove the cabinet and front panel.
2. Disassemble as shown in the figure so that the CD disc of
CD changer becomes visible.
3. Remove the CD disc as shown in the figure.
How to remove the CD Disc
(When CD exists in the tray) (See Fig. 8 -4)
1. Remove the cabinet and front panel.
2. Disassemble as shown in the figure so that the CD disc of
CD changer can be taken out.
3. Remove the CD disc from the tray as shown in the figure.

– 9 –
XL-HP700
CD ERROR CODE DESCRIPTION
Error Explanation
01 When Pickup set inner position, inner switch
cannot detect 'ON' level for 10 secs.
10* CAM error. Can't detect CAM switch when CAM is
moving.
11* When it detect CAM operation error during initialize
process.
20* TRAY error. Can't detect TRAY switch when TRAY is
moving.
21* When it detect TRAY operation error during initialize
process.
22* When it detect invalid TRAY switch during normal
operation.
23* When it detect invalid TRAY switch during initialize
procecss.
31 When it change to CD function, DSP cannot read
initial data.
Test Stage Frequency Frequency
Display Setting/
Adjusting
Parts
Instrument
Connection CD SECTION
••
••
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
*1. Input: Antenna Output: TP302
*2. Input: Antenna Output: TP301
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
AM IF 450 kHz 1,602 kHz T351 *1
AM Band — 531 kHz (fL): T306 *2
Coverage 1.1 ±0.1 V
AM Tracking 990 kHz 990 kHz (fL): T303 *1
Figure 9-2 ADJUSTMENT POINTS
Items adjusted automatically
(1)Offset adjustment (The offset voltage between the head
amplifier output and the VREF reference voltage is
compensated inside the IC.)
* Focus offset adjustment
* Tracking offset adjustment
(2) Tracking balance adjustment
(3)Gainadjustment(ThegainiscompensatedinsidetheIC
sothattheloopgainat the gain crossover frequency will
be 0 dB.)
* Focus gain adjustment
* Tracking gain adjustment
•Adjustment
Since this CD system incorporates the following automatic
adjustment functions, readjustment is not needed when
replacingthepickup.Therefore,different PWBsandpickups
can be combined freely.
Each time a disc is changed, these adjustments are
performed automatically. Therefore, playback of each disc
can be performed under optimum conditions.
R357
FM/AM
LOOP
ANTENNA
IC302
T351
IC303
T303
T306
T301
T302
L312
CNP302
IC301
MAIN PWB-A1
TP302
TP301
AM TRACKING fL
AM BAND
COVERAGE fL
AM IF
FM IF
FM RF
FM OSC
* 'CHECKING'
If Error is detected, 'CHECKING' will be displayed instead of
'ER-CD**'.'ER-CD**'displaywillonlybedisplayedwhenerror
had been detected for the 5th times.
ADJUSTMENT
MECHANISM SECTION
••
••
•Driving Force Check
Torque Meter Specified Value
Play: TW-2111 Over 80 g
•Torque Check
Torque Meter
Play: TW-2111 30 to 80 g.cm
Fast forward: TW-2231 70 to 180 g.cm
Rewind: TW-2231 70 to 180 g.cm
Specified Value
Specified
Value
Adjusting
Point Instrument Connection
Test Tape
Normal MTT-111 Variable 3,000 ±30 Hz Speaker
speed Resistor in Terminal
motor. (Load
resistance:
6 ohms)
••
••
•Tape Speed
Figure 9-1
TAPE MECHANISM
Tape
Motor
Variable Resistor in motor
*1. Input: Antenna Output: TP301
*2. Input: Antenna Output: Speaker terminal
••
••
•FM RF
Signal generator: 1 kHz, 40 kHz dev., FM modulated
FM Band — 87.50 MHz T301 (fL): *1
Coverage 1.3 V ±0.1 V
FM RF 98.00 MHz 98.00 MHz L312 *2
(10-30 dB)
Test Stage Instrument
Connection
Frequency Frequency
Display Setting/
Adjusting
Point
••
••
•FM IF
Signal generator: 10.7 MHz, FM modulated
IF 10.7 MHz 98 MHz T302 *1
(Turn the
core of trans-
former T302
fully counter-
clock wise)
Test Stage Instrument
Connection
Frequency Frequency
Display Setting/
Adjusting
Point
*1. Input: Antenna Output: TP301

XL-HP700
– 10 –
TEST MODE
•Setting the test mode
Any one of test mode can be set by pressing several keys as follows.
<X-BASS> + <CD> + <ON/STAND-BY> TEST: CD operation test.
Function: -CD test mode.
-Enter test 4 mode.
C D T E S T
OPEN/CLOSE operation is using manual.
<< >>,<< >>buttonsmakepick'sslidepossible.
Do TOC IL. Do normal play.
When these following key is input
into PLAY key, track number can
be appoint directly.
<<PLAY>> key input. <<MEMORY>> key input.
<< 1>> key: Track 4
<< 2>> key: Track 9
<< 3>> key: Track 15
<<STOP>> key input.
STOP
Laser ON.
<<MEMORY>> key input.
Tracking OFF play at that
specific point.
<<MEMORY>> key input.
Tracking ON play from
that specific point.
<<STOP>> key input.
STOP
IL isn't done
VOL — Last memory
BAL — CENTER
P.GEQ — FLAT
X-BASS — OFF
To cancel : Power OFF
Sliding the PICKUP with
<< >>, << >> button
must only be in STOP mode.
<<MEMORY>>
key input.
Adjustment result
automatically will
display as below.
for each 2 sec :
a) "FOFF_XX"
b) "TOFF_XX"
c) "TBAL_XX"
d) "TGAN_XX"
f) "FGAN_XX"
g) "RFLS_XX"
explanation:
a) Focus off set = "FOFF_XX"
b) Tracking off set = "TOFF_XX"
c) Tracking balance = "TBAL_XX"
d) Tracking Gain = "TGAN_XX"
f) Focus Gain = "FGAN_XX"
g) RF level shift = "RFLS_XX"
Adjustmentresultautomaticallywill
display as below for each 2 sec :
a) "FOFF_XX"
b) "TOFF_XX"
c) "TBAL_XX"
d) "TGAN_XX"
f) "FGAN_XX"
g) "RFLS_XX"
<<MEMORY>> key input.