Sharp XL-70V User manual

– 1 –
XL-70V
CONTENTS
Page
SAFETY PRECAUTION FOR SERVICE MANUAL ............................................................................................................ 2
VOLTAGE SELECTION...................................................................................................................................................... 2
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR .................................................................................................. 2
SPECIFICATIONS .............................................................................................................................................................. 3
NAMES OF PARTS ............................................................................................................................................................ 4
OPERATION MANUAL ....................................................................................................................................................... 6
DISASSEMBLY................................................................................................................................................................... 8
TEST MODE .................................................................................................................................................................... 10
ERROR LIST.................................................................................................................................................................... 12
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 14
TYPES OF TRANSISTOR AND LED............................................................................................................................... 14
VOLTAGE ........................................................................................................................................................................ 15
BLOCK DIAGRAM ........................................................................................................................................................... 16
SCHEMATIC DIAGRAM .................................................................................................................................................. 22
WIRING SIDE OF P.W.BOARD....................................................................................................................................... 31
FUNCTION TABLE OF IC................................................................................................................................................ 36
LCD SEGMENT ............................................................................................................................................................... 38
PARTS GUIDE/EXPLODED VIEW
SERVICE MANUAL
SHARP CORPORATION
No. S0082XL70V///
• In the interests of user-safety the set should be restored to its original
condition and only parts identical to those specified should be used.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
XL-70VVideoCDMicroSystemconsistingofXL-70V(mainunit)and
CP-XL70U (speaker system).
XL-70V
VIDEO CD MICRO SYSTEM
MODEL
NTSC/PAL
ThisServiceManualisfortheXL-70V,whichisaminor-modification
model of the XL-30V. This manual, therefore, describes only the
changedpointsfromtheservicemanual.PleaserefertotheXL-30V
service manual (No.S0081XL30V///) together with this manual.
XL-30V Page
REMOVING AND REINSTALLING THE MAIN PARTS ...... 10
ADJUSTMENT................................................................ 12
WAVEFORMS OF CD CIRCUIT..................................... 41
TROUBLESHOOTING (CD SECTION) .......................... 42
FUNCTION TABLE OF IC .............................................. 49

XL-70V
– 2 –
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) TheLaserPowerOutputofthePickupinsidetheunitandreplacementservicepartshavealreadybeenadjustedpriortoshipping.
(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.
SAFETY PRECAUTION FOR SERVICE MANUAL
VOLTAGE SELECTION
Before operating the unit on mains, check the preset voltage. If the voltage is different from your local voltage, adjust the voltage
as follows. Turn the selector with a screwdriver until the appropriate voltage number appears in the window (110/127/220/230-
240V AC). AC POWER SUPPLY CORD AND AC PLUG ADAPTOR
QACCE0001SJZZ
QACCA0001SJ00
QACCB0001SJ00 QPLGA0253AFZZ
CAUTION
●This Video CD Micro System is classified as
a CLASS 1 LASER product.
●The CLASS 1 LASER PRODUCT label is lo-
cated on the rear cover.
●Use of controls or adjustments or perform-
ance of procedures other than those speci-
fied herein may result in hazardous radiation
exposure.
As the laser beam used in this compact disc
player is harmful to the eyes, do not attempt
to disassemble the cabinet. Refer servicing
to qualified personnel only.
Laser Diode Properties
Material: GaAIAs
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
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.

– 3 –
XL-70V
Type: 2-way [10 cm (4") woofer and
2.5cm(1")semidometweeter]
Rated input
power: 20 W
Maximum input
power: 40 W
Impedance: 4 ohms
Dimensions: Width; 160 mm (6-5/16")
Height; 240 mm (9-1/2")
Depth; 189 mm (7-1/2")
Weight: 2.3 kg (5.1 lbs.)/each
●Cassette deck section
Frequency
response: 50 - 14,000 Hz (Normal tape)
Signal/noise ratio: 50 dB
Wow and flutter: 0.25 % (WRMS)
●General
Power source: AC 110/127/220/230-240V,
50/60 Hz
Power
consumption: 55 W
Dimensions: Width; 160 mm (6-5/16")
Height; 241 mm (9-1/2")
Depth; 298 mm (11-3/4")
Weight: 4.3 kg (9.5 lbs.)
●Amplifier section
Output power: MPO; 60 W (30 W + 30 W)
(10 % T.H.D.)
RMS; 40 W (20 W + 20 W)
(10 % T.H.D.)
Output terminals: Speakers; 4 ohms
Headphones; 16-50 ohms
(recommended; 32 ohms)
Video out: 1 Vp-p (75 ohms)
Input terminals: Video/Auxiliary(audiosignal);
500 mV/47 kohms
●Video CD section
Video output
format: PAL / NTSC
●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)
●Tuner section
Frequency range: FM; 88-108 MHz
AM; 531-1,602 kHz
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
SPECIFICATIONS
XL-70V
Specifications for this model are subject to change without
prior notice.
CP-XL70U

XL-70V
– 4 –
NAMES OF PARTS
XL-70V
1. Voltage Selector
2. AC Power Input Socket
3. FM 75 ohms Aerial Socket
4. AM Loop Aerial Socket
5. Video/Auxiliary (Audio Signal) Input Sockets
■Rear panel
7. Speaker Terminals
■Front panel
1. Timer Indicator
2. Record Indicator
3. Sleep Indicator
4. (VCD/CD) Random Indicator
5. (VCD/CD/TUNER) Memory Indicator
6. FM Stereo Mode Indicator
7. (VCD/CD) Play Indicator
8. (VCD/CD) Repeat Indicator
9. FM Stereo Indicator
10. Surround Indicator
11. VCD/CD Compartment
12. On/Stand-by Button
13. Surround Button
14. (VCD/CD) Open/Close Button
15. Remote Control Sensor
16. Volume Select Button
17. (VCD) Stop/Return Button
(CD/TAPE) Stop Button
(TUNER) Memory Clear Button
18. (TAPE) Record Pause Button
19. Bass/Treble Selector Button
20. Memory/Set Button
21. Clock/Timer/Sleep Button
22. Band Selector Button
23. (VCD) Skip/Previous Button
(CD) Track Down Button
(TAPE) Rewind Button
(TUNER) Tuning Down Button
24. Function Selector Button
25. Headphones Socket
26. (VCD/CD/TAPE) Play Button
27. Volume/Jog Dial
28. (VCD) Skip/Next Button
(CD) Track Up Button
(TAPE) Fast Forward Button
(TUNER) Tuning Up Button
29. Volume/Jog Dial Selector Button
30. Cassette Compartment
6. Video Output Socket
2
3
4
5
7
16
123 456
8
10
79
11
12
13
14
15
16
17
18
19
20
26
27
28
29
30
21
22
23
24
25

– 5 –
XL-70V
CP-XL70U
1
2
4
3
■Remote control
1. Tweeter
2. Woofer
3. Bass Reflex Duct
4. Speaker Wire
12 13 14 15
1
2
3
4
5
6
7
8
9
10
11
16 17 1918
20 21 22 23
24
26
27
28
29
30
25
1. Remote Control Transmitter LED
2. Timer Button
3. (VCD/CD) Audio Mode Button
4. (VCD/CD) Direct Search Buttons
5. (VCD/CD) Display Button
6. (VCD) Video Intro Button
7. Sleep Button
8. On/Stand-by Button
9. (VCD) TV Type Button
10. (VCD) Track Digest Button
11. (VCD) Time Search Button
12. (VCD/CD) Memory Button
13. (VCD/CD) Clear Button
14. (VCD/CD) Random Button
15. (VCD) Playback Control Auto/Off Button
16. (VCD) Skip/Previous Button
(CD) Track Down Button
17. (VCD) Skip/Next Button
(CD) Track Up Button
18. (VCD/CD) Repeat Button
19. (VCD/CD) Pause Button
20. (VCD/CD) Review Button
(TAPE) Rewind Button
21. (VCD/CD) Cue Button
(TAPE) Fast Forward Button
22. (VCD) Stop/Return Button
(CD/TAPE) Stop Button
23. (VCD/CD/TAPE) Play Button
24. (TAPE) Record Pause Button
25. Surround Button
26. Function Buttons
27. Treble Buttons
28. Bass Buttons
29. (TUNER) Preset Up/Down Buttons
30. Volume Up/Down Buttons

XL-70V
– 6 –
OPERATION MANUAL
PREPARATION FOR USE
(Continued)
■
Connecting the AC power lead
Checkthesettingof theACvoltageselectorlocated on the rear panel before plugging the unit into an
A
C socket. If necessary, adjust the selector to cor-
respondtotheACpowervoltageused in your area. Selector adjustment:
T
urn the selector with a screwdriver until the ap-
propriate voltage number appears in the window (110/127/220/230 - 240V AC). Notes: ●Unplug theAC power lead from theAC socket if
the unit is not to be used for a prolonged period of time.
●Never use a power lead other than the one sup-
plied. Otherwise, a malfunction or an accident may occur.
●AC Plug Adaptor In areas (or countries) where an AC socket as shown in illustration
2
is used, connect the unit
using the AC plug adaptor supplied with the unit, as illustrated. The AC plug adaptor is not included in areas where the AC wall socket and AC power plug can be directly connected (see illustration
1
).
1
2
RATED
LINE VOLTAGE
230V
ı
240V
To an AC socket.
Precautions for battery use: ●Insert the batteries according to the direction in-
dicated in the battery compartment.
●Replace all old batteries with new ones at the
same time.
●Do not mix old and new batteries. ●Remove the batteries if they are weak or if the
unitwillnotbeusedfor long periods of time.This willpreventpotentialdamage duetobatteryleak- age.
Caution: Donotuserechargeable batteries (nickel-cadmium battery, etc.). Notes concerning use: ●Replacethebatteriesiftheoperatingdistanceis
reduced or if the 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 interfere with operation. Change the lighting or the direction of the unit.
●Keep the remote control away from moisture,
excessive heat, shock, and vibrations.
■Remote control
15
15
●2 “AA” size batteries (UM/SUM-3, R6, HP-7
or similar)
0.2m - 6m (8"- 20')
●When inserting or removing the batteries, push
them towards the
-
battery terminals.
●Installingthebatteriesincorrectlymay cause the
unit to malfunction.
■AM/FM interval (span) The International Telecommunication Union (ITU) has established that member countries should maintain either a 10 kHz or a 9 kHz interval be- tween broadcasting frequencies of anyAM station. The illustration shows the 9 kHz interval zones (re- gions 1 and 3), and the 10 kHz interval zone (re- gion 2). This product is not equipped with a span selector. However, it will be adjusted to 9 kHz AM interval (50 kHz FM interval) when shipped from the fac- tory. Before using the unit, be sure to set it for the AM tuning interval (span) used in your area. To check the tuning span currently selected: 1
Press the ON/STAND-BY button to turn the power on.
2
Press the FUNCTION button until “FM” or “AM” appears in the display.
3
Press the BAND button to select the AM band.
●If “AM 531 kHz” is displayed, it means that the
radio has been adjusted for a 9 kHz span. If “AM 530 kHz” is displayed, it means that the radio has been adjusted for a 10 kHz span.
To change from a 9 kHz AM (50 kHz FM) interval to a 10 kHz AM (100 kHz FM) interval:
1
Press the ON/STAND-BY button to enter the stand-by mode.
2
Hold down the button and the MEMORY/ SET button for at least 4 seconds. Release the buttons when “AM SP 10 kHz” and “FM SP 100 kHz” are displayed alternately.
●The unit will return to the clock display. To return to a 9 kHz AM (50 kHz FM) interval:
1
Press the ON/STAND-BY button to enter the stand-by mode.
2
Hold down the button and the MEMORY
/
SET button for at least 4 seconds. Release the buttons when “AM SP 9 kHz” and “FM SP 50 kHz” are displayed alternately.
●The unit will return to the clock display. Caution: ●When the unit is left for a few hours after the
span has been switched andAC power lead dis- connected, it will be automatically returned to a 9 kHz span. If this happens, set the span again.
●Whenthespanisswitched,anystationsthat are
MEMORY/
SET
FUNCTION
BAND
ON/ STAND-BY
kHz kHz kHz
kHz
kHz kHz kHz
kHz
memorised will be cancelled.

– 7 –
XL-70V
RESETTING THE MICROCOMPUTER
SETTING THE CLOCK
(Main unit operation) 1
Press the CLOCK/TIMER/SLEEP button.
2
Within 3 seconds, press the MEMORY/SET button.
3
Turnthejogdialtoselectthetimedisplaymode.
0:00 AM 12:00
“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.
4
Press the MEMORY/SET button.
5
Adjust the hour by turning the jog dial.
●When the jog dial is turned one click clockwise,
thetimewillincrease by 1hour. When itisturned one click anti-clockwise, the time will decrease by 1 hour. Keepturningthejog dial tochangethetimecon- tinuously.
●When the 12-hour display is selected, “AM” will
change automatically to “PM”.
7
Adjust the minutes by turning the jog dial.
●When the jog dial is turned one click clockwise,
the time will increase by 1 minute. When it is turned one click anti-clockwise, the time will de- crease by 1 minute. Keepturningthejog dial tochangethetimecon- tinuously.
●The hour setting will not advance even if min-
utes advance from “59” to “00”.
8
Press the MEMORY/SET button.
●The clock starts operating from “0” seconds.
(Seconds are not displayed.)
Note: ●The clock display will flash on and off when the
AC power supply is restored after a power fail- ure occurs or after the AC power lead is discon- nected. If this happens, follow the procedure below to change the clock time.
To change the clock time: Perform steps 1, 2 and 5 - 8 above. To change the time display mode:
➀
Perform steps 1 - 3 in the section “RESETTING THE MICROCOMPUTER”.
➁
Perform steps 1 - 8 above.
In this example, the clock is set for the 24-hour (0:00) system.
6
Press the MEMORY/SET button.
CLOCK/TIMER/ SLEEP MEMORY/SET
Jog dial
Reset the microcomputer under the following conditions: ●To erase all ofthestoredmemorycontents (clock
and timer settings, and tuner and CD presets).
●If the display is not correct. ●If the operation is not correct. 1
Press the ON/STAND-BY button to enter the stand-by mode.
2
Unplug the AC power lead from the AC IN- PUT socket on this unit.
3
Whilst pressing down the MEMORY/SET but- ton and the button, plug theAC power lead into the AC INPUT socket on this unit.
Caution: ●Theoperationexplainedabovewill erase all data
stored in memory, such as clock and timer set- tings, and tuner and CD presets.
1
3
2,3
AC INPUT
3

XL-70V
– 8 –
1 Side Panel (Left/Right) 1. Screw .................. (A1) x8 8-1
2 Top Cabinet 1. Screw .................. (B1) x1 8-1
2. Socket ................. (B2) x5
3 Rear Panel 1. Screw .................. (C1) x3 8-1
2. Screw .................. (C2) x2
4 Power Amp. PWB 1. Screw .................. (D1) x1 8-2
2. Socket ................. (D2) x2
5 Main PWB/ 1. Screw .................. (E1) x4 8-3
Headphones PWB 2. Screw .................. (E2) x1
3. Bracket ................ (E3) x1
4. Socket ................. (E4) x3
5. Flat wire............... (E5) x1
6. Socket ................. (E6) x1
6 Jog Switch PWB 1. Socket ................. (F1) x1 8-3
2. Screw .................. (F2) x2
7 Display PWB/ 1. Screw .................. (G1) x3 8-3
LED PWB 2. Screw .................. (G2) x3
(With Jog Motor 3. Bracket ................ (G3) x1
Holder) 4. Socket ................. (G4) x1
5. Knob .................... (G5) x1
6. Hook .................... (G6) x2
7. Hook .................... (G7) x2
8 Front Panel 1. Screw .................. (H1) x1 8-3
2. Socket ................. (H2) x1
3. Screw .................. (H3) x1
9 Power PWB 1. Screw .................. (J1) x4 8-3
2. Screw .................. (J2) x1
3. Screw .................. (J3) x1
4. Bracket ................ (J4) x1
10 Tape Mechanism 1. Open the cassette holder. 9-1
2. Screw .................. (K1) x4
11 Video PWB 1. Screw .................. (L1) x4 9-2
2. Socket ................. (L2) x3
12 CD PWB/ 1. Screw .................. (M1) x7 9-2
Open Close Switch 2. Bracket ................ (M2) x3
PWB/CD Lid PWB 3. Socket ................. (M3) x4
(Note) 4. Hook .................... (M4) x1
13 CD Mechanism 1. Screw .................. (N1) x3 9-3
2. Screw .................. (N2) x3
DISASSEMBLY
Figure 8-2
Figure 8-3
STEP REMOVAL PROCEDURE FIGURE
Figure 8-1
XL-70V
XL-70V
Note:
After removing the connector for the optical pickup from the
connector, wrap the conductive aluminium foil around the
front end of connector remove to protect the optical pickup
from electrostatic damage.
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. 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.
4. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
(A1)x2
ø3x10mm
(B2)x1 (C1)x2
ø3x10mm
Side Panel (Right)
Front
Panel
Rear Panel (C1)x1
ø3x10mm
Side Panel
(Left)
(B2)x1
(A1)x4
ø3x10mm
(A1)x1
ø3x10mm
(A1)x1
ø3x10mm
(B1)x1
ø3x10mm
Top Cabinet
CD PWB
Display
PWB
Main PWB
(C2)x2
ø3x8mm
(B2)x1
Power
PWB
(B2)x2
(D1)x1
ø3x8mm Main PWB
Power
PWB
Power Amp.
PWB
(D2)x2
(G2)x2
ø2.5x10mm
(G2)x1
ø2.5x10mm
(G1)x3
ø2.5x14mm
(F2)x2
ø2.5x12mm
(E1)x1
ø3x8mm
Main PWB
Power
PWB
Power PWB
Sub Power
Transformer
Front Panel
Display PWB
LED PWB
(J1)x4
ø4x6mm
(E2)x1
ø3x8mm
(E3)x1
(H2)x1
(J2)x1
ø3x10mm
(J3)x1
ø3x6mm
(H1)x1
ø3x8mm
(H3)x1
ø3x6mm
(E4)x1
(E4)x1
(G3)x1
(E5)x1
(G6)x2
(G7)x2
(G5)x1
(E4)x1
(J4)x1
Tape
Mechanism
PWB
(G4)x1
Headphones
PWB
(F1)x1
(E1)x2
ø3x10mm
Jog Motor
Holder
Jog Switch
PWB
(E6)x1
(E1)x1
ø3x8mm

– 9 –
XL-70V
Tape
Mechanism
Open
(K1)x4
ø2.5x10mm
Front Panel
Cassette
Holder
Figure 9-1
Figure 9-2
Figure 9-3
Figure 9-4
1 Woofer/Tweeter 1. Net Frame ........... (A1) x1 9-4
2. Screw .................. (A2) x4
3. Woofer Ring ........ (A3) x1
4. Screw .................. (A4) x4
STEP REMOVAL PROCEDURE FIGURE
CP-XL70U
(A1)x1
(A3)x1
(A4)x4
ø3x12mm
Woofer
Tweeter
(A2)x4
ø4x20mm
Speaker Box
(M1)x2
ø2.5x8mm
(M1)x1
ø2.5x10mm
(M3)x1 (M3)x2
Top Cabinet
Open/Close
Switch PWB
CD Motor PWB CD Mechanism
CD Lid
PWB
(M4)x1
(M2)x1
(M2)x1
CD PWB
(M2)x1
(M1)x4
ø2.5x14mm
(L1)x4
ø2x10mm
(L2)x1 (L2)x2
Video PWB
(M3)x1
CD Mechanism
CD Lid
Motor
CD Lid
Motor
Holder
(N2)x3
ø2.5x10mm
(N1)x3
ø2.5x10mm PWB
Washer x3
Top Cabinet

XL-70V
– 10 –
The test mode applied to this microcomputer has three modes, namely ordinary test mode to be used for adjustment or
measurement, aging test mode to be used for aging test, and self-diagnosis test mode for self-inspection in case of final product
inspection.
1. Turning on the test mode
To turn on the specific test mode, press the POWER button, holding down the following two buttons in the ordinary stand-by
mode (power off state). In this case only the main unit button is valid. Even when the POWER of remote control button is set
to on, the test mode is not turned on.
[Ordinary test mode]
1. Tuner Test Mode (TEST 2)............................... Volume/JOG Dial Selector + Volume Select
2. Electronic volume Test Mode (TEST 3) ........... REW/REV + FF/FWD
3. Timer Test Mode (TEST 4) ............................... FUNCTION + Volume Select
4. LCD Test Mode (TEST 5) ................................. FUNCTION + FF/FWD
[Self-diagnosis test mode]
1. Button input diagnosis test mode (TEST 6)...... REW/REV + Volume Select
TEST MODE
2. Tuner Test Mode (TEST 2)
1. Outline of tuner (radio) test mode
The tuner test mode is intended to store the adjustment and measurement frequencies in the preset memory CH without
frequency setting by adjusting personnel when the tuner section is adjusted in the production line.
2. Details of tuner test mode
When the power is turned on by using the "POWER" button while the "Volume/JOG Dial Selector" and "Volume Select"
buttonsareheld downin POWEROFFstate, thefrequencyfor adjustmentand measurementofdestination specifiedbythe
AREAterminal ispreset andstoredinthepreset memoryCH. However,Ordinary1andOrdinary2are setto thedesignation
(destinationselectedbySPANswitchingoperation)setwhenthetestmodeisset.(Asforfrequenciestobepresetandstored
for each destination, refer to item 3.)
The tuner test mode is started from preset No.1.
The operations of test mode are identical with the ordinary operations of TUNER function. However, FUNCTION switching
is invalid.
Since it is necessary to discard the content of preset memory when the tuner test mode is ended, "0000" or "1111" bits are
writteninthememorytobecheckedincaseofmemorycheck(incaseofinitialsetting)sothatmemoryabnormalityisdetected
in case of initial setting so as to ensure memory initialization.
When the tuner test mode is turned on, the following indication lights for one second.
•TheTUNER TEST2mode isset as aresult ofVolumeSelect +POWER.-> IFAC is setto OFFinthe TEST2mode, theinitial
state is restored.
When POWER is set to OFF, the memory of TEST 2 mode is protected.
When the power is turned on again, the ordinary operation is enabled while the data is stored in the
memory (besides TUNER).
If AC OFF state is maintained in this state for about 1/2 day, start is executed in the initial state.
• To clear the whole memory, insert the AC cord, holding down MEMORY + PLAY.

– 11 –
XL-70V
3. Preset frequencies for various destinations (random preset memory)
• The hatched sections of the table are not stored in memory.
3. Electronic volume Test Mode (TEST 3)
When the test mode is set, the following indication lights for one second.
When this mode is set, BASS/TREBLE is set to 0 (0 dB) and SURROUND mode is set to off, and start-up function is set to CD
whenvolumeis-14dB(STEP17).Thebuttonoperationsinthetestmodearethesameasthoseofordinaryoperationexcepting
sound volume UP/DOWN.
(1) The indication is the same as that of ordinary operation excepting test mode setting.
(2) The sound volume control with the sound volume UP/DOWN button is only the following 3 steps unlike the ordinary state.
Volume- ∞(STEP 0) <-> Volume-14 dB (STEP 23) <-> Volume-0 (STEP 30)
(3) BASS/TREBLE and SURROUND are switched when button operation is performed.
4. Timer test Mode (TEST 4)
When the test mode is set, the following indication lights for one second.
The current time and timer time are set in the following procedure to perform the timer playback.
1. Set the current time to 1:00, set the timer to ON time 1:02, set the function to Tape, and set volume STEP 8. One minute is
counted as one second, and the timer playback operation is performed. The fade-in (when playback is started) is executed
at a rate of one step for 0.5 sec. After completion of fade-in the fade-out is executed at a rate of one step for 0.5 sec (WAIT
1 sec inserted). After completion of fade-out the power is turned off (after WAIT 1 sec), and the mode is changed to the stand-
by mode.
The indication during operation is the same as that of ordinary timer operation.
5. LCD Test Mode (TEST 5)
When the LCD test mode is set, all the LCD segments are lighted. After that the indication is changed as follows according to
the "PLAY" button input.
Lighting of all segments Lighting of odd segments Lighting of even segments
BAND
16
17
18
19
20
21
22
23
24
25
26 FM106.00 MHz
27 FM 90.00 MHz
28 FM MONO FM 98.00 MHz
29 FM108.00 MHz
30 FM 87.50 MHz
Ordinary 1, ChinaCHBAND
1 FM 87.50 MHz
2 FM108.00 MHz
3 FM STEREO FM 98.00 MHz
4 FM 90.00 MHz
5 FM106.00 MHz
6 AM 531 kHz
7 AM1602 kHz
8 AM AM 990 kHz
9 AM 603 kHz
10 AM1404 kHz
11
12
13 LW
14
15
Ordinary 1, ChinaCH

XL-70V
– 12 –
6. Button input diagnosis Test Mode (TEST 6)
When the test mode is set, the following indication appears.
This test mode is intended to check whether all the main unit buttons can be detected. Accordingly, in this test mode checking
as to whether the "POWER" button was pressed after all the buttons shown below were pressed is performed. If the result is
OK, is indicated. Even any one of keys was not pressed, an error is indicated. In case of OK termination or error termination
exit from this mode occurs when the "POWER" button is pressed next time, and the stand-by mode is set.
1. In case of "Review" + "Volume/Jog Dial Select Button"
The following 14 buttons are detected as all buttons.
The OK/NG indication of test result is as follows.
ERROR LIST
PU-IN SW detection error display
Error contents ............................ DisplayedwhentheONofdetectionSWcouldnotbedetectedevenafteracertainperiodoftime
passed, even though controlled to return the CD pickup to the most inside periphery in
microcomputer.
Major causes ............................. Failure of PU-IN SW or connection failure, and failure of slide motor or connection failure
Recovery method from error ..... Remove the cause of the error and turn on the power again.
CD Read error display
Error contents ............................ Displayed when the data of the DISC can not be read correctly, or can be read however the
standard of the disc is impossible to be played back.
Major cause ............................... The disc is back to front. Other disc than CD-DA/VCD1.1/VCD2.0 is inserted.
The flaw or contamination of the disc is great and the data cannot be read.
Recovery method from error ..... Open the CD cover and insert a correct disc correctly. Remove the contamination or flaw of the
disc.
NO DICS display
Error contents ............................ Displayed when impossible to focus on the disc.
Major cause ............................... The disc is back to front. Other disc than CD-DA/VCD1.1/VCD2.0 is inserted. The flaw or
contamination of the disc is great and the data cannot be read.
Recovery method from error ..... Open the CD cover and insert a correct disc correctly. Remove the contamination or flaw of the
disc.

– 13 –
XL-70V
TAPE mechanism error display (1)
Error contents ............................ Displayed when not becomes "ON" while the mechanism operating detection SW "CAM-SW" is
beingoperatedeventhoughthemotororsolenoidarecontrolledtooperatethetapeforplayback/
FF/REW/Recording.
Major cause ............................... When displayed even though the mechanism is working, failure of CAM-SW and connection
failure.
When the mechanism is not working, failure of the motor and solenoid and connection failure.
Recovery method from error ..... Remove the cause of the error and turn on the power again.
TAPE mechanism error display (2)
Error contents ............................ Displayed whenthe initializationcannot becompleted, eventhough themicrocomputer controls
the motor or the solenoid to initialize the tape mechanism (set the mechanism to the stop
condition.) (Mechanism operating detection SW "CAM-SW" is stopped and does not become
"OFF".)
Major cause ............................... When displayed even though the mechanism is working, failure of CAM-SW and connection
failure.
When the mechanism is not working, failure of the motor and solenoid and connection failure.
Recovery method from error ..... Remove the cause of the error and turn on the power again.
VCD unit communication error
Error contents ............................ The systemcomputercannot communicatewith VCDunitmicrocomputer.Orcan communicate
however the contents are not as specified in the specification.
Major cause ............................... VCD microcomputer or the CD servo microcomputer are in abnormal operation.
The power is not supplied to the VCD unit and CD servo unit.
The communication line between the system microcomputer and the VCD unit are short-circuit
or open.
Recovery method from error ..... Remove the cause of the error and turn on the power again.

XL-70V
– 14 –
NSW801 PICKUP IN ON—OFF
SW651 VOLTAGE SELECTOR 230-240V
SW700 JOG ON—OFF
SW709 ON/STAND-BY ON—OFF
SW710 CLOCK/TIMER/SLEEP ON—OFF
SW711 TUNING UP ON—OFF
SW712 PLAY/CD PAUSE ON—OFF
SW713 VOLUME SELECT ON—OFF
SW718 SURROUND ON—OFF
SW721 MEMORY/SET ON—OFF
SW722 BASS/TREBLE ON—OFF
•The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas-
sis with no signal 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
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
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 resistor. 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 symbol is microfarad. As to electrolytic
capacitor, the expression “capacitance/withstand voltage”
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.
REF. NO DESCRIPTION POSITION POSITIONREF. NO DESCRIPTION
SW723 BAND ON—OFF
SW724 REC. PAUSE ON—OFF
SW725 STOP/CLEAR ON—OFF
SW726 TUNING DOWN ON—OFF
SW727 FUNCTION ON—OFF
SW728 VOLUME JOG ON—OFF
SW730 CD LID OPEN/CLOSE ON—OFF
SW802 CD LID ON—OFF
SW901 FOOL PROOF ON—OFF
SW902 CAM ON—OFF
TYPES OF TRANSISTOR AND LED
ECB
(S)(G)(D)
FRONT
VIEW
FRONT
VIEW
BCE
FRONT
VIEW
2SA933 SR
2SB562 C
2SC2001 K
2SC535 C
2SD1858 R
2SK246 GR
KRA102 M
KRC102 M
KRC104 M
KRC107 M
KTA1266 GR
KTC3199 GR 2SD2012 Y MPG3372X
HY2043 SVC348S
KDV147B
1 2 3
(1) (2) (3)

– 15 –
XL-70V
VOLTAGE
0V
11.4V
0.4V
0V
—
11.4V
0.4V
3.2V
0V
9
8
7
6
5
4
3
2
1
PIN
NO. VOLTAGE
IC805
3.3V
4.6V
2.8V
3.7V
0V
0V
0V
0.2V
0.2V
0.3V
0.3V
0.1V
0.2V
5V
9
8
7
6
5
4
3
2
1
14
13
12
11
10
PIN
NO. VOLTAGE
IC17V
6.1V
5.3V
5.3V
0V
5.3V
5.3V
6.1V
10.9V
8
7
6
5
4
3
2
1
PIN
NO. VOLTAGE
IC11V 8V
0V
5V
3
2
1
PIN
NO. VOLTAGE
IC807
6.4V
4.9V
1.6V
1.6V
2.8V
2.8V
0V
0V
0V
2.8V
2.8V
1.6V
1.6V
3.3V
5.7V
—
—
1.6V
1.6V
2.8V
2.8V
0V
0V
0V
2.8V
2.8V
1.6V
1.6V
1.6V
6.4V
9
8
7
6
5
4
3
2
1
24
23
22
21
20
19
30
29
28
27
26
25
18
17
16
15
14
13
12
11
10
PIN
NO. VOLTAGE
IC804
2.5V
2.5V
2.7V
3.1V
3.8V
2.9V
—
—
5V
—
—
5V
0V
5V
1.7V
2.1V
0V
0V
—
—
—
—
0.5V
—
—
—
—
—
—
—
—
5V
—
—
—
—
—
—
—
5V
5V
5V
5V
5V
9
8
7
6
5
4
3
2
1
24
23
22
21
20
19
30
29
28
27
26
25
18
17
38
37
36
35
34
33
44
43
42
41
40
39
32
31
16
15
14
13
12
11
10
PIN
NO. VOLTAGE
IC806
5V
1.3V
2.9V
0.5V
0.4V
5V
2.7V
2.8V
1.5V
2.2V
—
—
3.5V
3.5V
—
1.8V
1.7V
1.8V
1.4V
5V
0V
1.8V
1.8V
1.7V
1.8V
1.8V
0.1V
3.3V
3.3V
—
1.3V
2.9V
0.7V
0.4V
0V
2.4V
2.4V
0.9V
2.4V
0V
9
8
7
6
5
4
3
2
1
24
23
22
21
20
19
30
29
28
27
26
25
18
17
38
37
36
35
34
33
40
39
32
31
16
15
14
13
12
11
10
PIN
NO. VOLTAGE
IC16V
5V
3.4V
1.6V
1.6V
1.8V
1.8V
1.9V
1.9V
1.9V
2.0V
1.9V
1.7V
1.2V
1.3V
1.6V
0V
1.4V
1.4V
1.4V
1.5V
1.2V
0.3V
1.9V
0V
1.6V
1.6V
1.7V
1.3V
2.0V
3.2V
5V
5V
9
8
7
6
5
4
3
2
1
24
23
22
21
20
19
30
29
28
27
26
25
18
17
32
31
16
15
14
13
12
11
10
PIN
NO. VOLTAGE
IC10V
2.6V
2.5V
0V
2.6V
5V
3.3V
0V
0V
—
—
—
—
5V
5V
3.3V
1.6V
0V
1.1V
3.2V
1.6V
1.1V
0V
1.5V
1.6V
3.3V
1.6V
1.6V
0.7V
1.6V
0.7V
1.6V
1.6V
1.6V
1.6V
1.6V
1.3V
1.7V
0V
3.3V
1.6V
1.6V
0V
3.3V
0V
0V
1.4V
1.5V
3.2V
0V
1.3V
2.7V
1.3V
1.3V
0V
5V
0V
3.1V
2.7V
2.6V
2.5V
3.8V
2.8V
5V
5V
9
8
7
6
5
4
3
2
1
24
23
22
21
20
19
30
29
28
27
26
25
18
17
38
37
36
35
34
33
44
43
42
41
40
39
32
31
50
49
48
47
46
45
58
57
56
55
54
53
64
63
62
61
60
59
52
51
16
15
14
13
12
11
10
PIN
NO. VOLTAGE
IC802
3.3V
1.6V
1.6V
1.6V
1.6V
0V
2.6V
0V
1.7V
1.6V
1.6V
0.7V
0.3V
1.6V
1.6V
1.6V
0.7V
1.6V
1.2V
1.3V
2.4V
1.1V
1.6V
0V
9
8
7
6
5
4
3
2
1
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
PIN
NO. VOLTAGE
IC801
2.5V
2.5V
2.5V
2.5V
0V
1.7V
3.3V
5V
2.5V
2.5V
0V
2.3V
2.4V
0V
0V
5V
5V
5V
5V
0.8V
—
5V
—
5V
0V
5V
5V
0V
0.3V
5V
0.2V
5V
5V
0V
—
5V
5V
5V
5V
3.9V
5V
—
0V
0V
0V
1.9V
0V
0V
5V
5V
9
8
7
6
5
4
3
2
1
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
PIN
NO. VOLTAGE
IC701
—
4.8V
4.8V
4.8V
4.8V
5V
5V
5V
—
5V
0V
0V
0V
0V
0V
—
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
PIN
NO. VOLTAGE
51
64
63
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
62
61
60
59
58
57
56
55
54
53
52
85
84
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
83
82
81
0V
—
—
—
5V
3.5V
0V
1.2V
0V
3.5V
0V
2.7V
5V
0V
5V
5V
1.5V
—
2.1V
—
0.1V
1.8V
5V
5V
0V
0V
—
—
—
—
0V
5V
0V
—
—
—
0V
5V
—
—
0V
2.3V
0V
5V
2.3V
2.3V
2.3V
2.3V
—
—
9
8
7
6
5
4
3
2
1
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
PIN
NO. VOLTAGE
IC14V
0V
1.3V
—
5V
2.3V
0V
0V
0V
5V
5V
0V
0V
0V
0.8V
2V
5V
—
—
—
—
2.4V
0V
5V
2.3V
0V
—
0V
5V
2.3V
2.2V
1.2V
4.5V
1.5V
4.8V
1.4V
1.0V
1.2V
1.9V
1.9V
5V
0V
2.3V
1.4V
0.6V
1.4V
0.8V
1.6V
0.8V
1.3V
0V
PIN
NO. VOLTAGE
51
64
63
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
62
61
60
59
58
57
56
55
54
53
52
85
84
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
83
82
81
3.6V
3.5V
3.5V
1.8V
1.7V
1.8V
1.4V
1.8V
1.8V
1.7V
1.8V
1.8V
1.3V
2.9V
0.5V
0.4V
2.7V
2.8V
1.5V
2.2V
1.3V
2.9V
0.7V
0.4V
2.4V
2.4V
0.9V
2.4V
5V
0V
3.6V
1.8V
0.6V
0.6V
2.3V
1.9V
1.9V
1.2V
1.0V
4.8V
4.5V
0.2V
2.2V
2.3V
5V
5V
0.2V
5V
0.2V
0V
9
8
7
6
5
4
3
2
1
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
PIN
NO. VOLTAGE
IC15V
3.6V
2.7V
3.5V
3.3V
1.2V
1.3V
1.6V
1.4V
1.4V
1.4V
1.5V
1.2V
3.5V
0V
0.3V
3.5V
3.5V
1.7V
1.9V
2.0V
1.9V
1.9V
1.9V
1.8V
1.8V
1.7V
1.6V
1.9V
1.6V
0V
5V
1.6V
1.3V
2.0V
1.6V
3.4V
3.2V
1.5V
0.1V
1.8V
2.1V
0.1V
0V
0V
5V
2.6V
0V
3.5V
3.0V
0V
PIN
NO. VOLTAGE
51
64
63
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
62
61
60
59
58
57
56
55
54
53
52
85
84
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
83
82
81

XL-70V
– 16 –
Figure 16 BLOCK DIAGRAM (1/6)
1 2 3 4 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
5 6
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
515253545556575859606162636465666768697071727374757677787980
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
IC15V
ES3880F
VIDEO CD DECODER
IC16V
IX0025SJ
D-RAM 256K x 16
123456789
21
20 19 18 17 16 15 14 13 12 11 10
22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
3
2
1
2
2
3
1
1
4
5
6
7
8
9
10
11
12
13
14
15
16
23
24
25
26
27
28
29
30
31
32
22
21
20
19
18
17
IC10V
IX0035SJ
ROM256Kx16
1 2 3 4 5 6 7
8
9
1011121314
IC17V
74HC07A
BUFFERAMP.
IC13V
KIA7036P
RESET
V_GND
MPACK
MPDATA
MPSTB
MPRST
DATA
LRCK
BCK
D_GND
VPP
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
D0
D1
D2
VSS
VCC
A18
A17
A14
A13
A8
A9
A11
OE
A10
CE
D7
D6
D5
D4
D3
VSS A4 A5 A6 A7 A8 OE LCAS NC D8 D9 D10 D11 VSS D12 D13 D14 D15 VSS
D0 D1 D2 D3
VCC
D4 D5 D6 D7
NC NC
WE
RAS
NC
A0 A1 A2 A3
VCC
UCAS
VCC
LA12
LA13
LA14
LA15
LA16
LA17
AUDIO_CLK
AUDIO_DATA
BCLK
LR
DRAS1/DOE
RSD
RBCLK
RWS
TDMCLK
TDMDR
TDMFS
DCAS
VSS
VCC3
DRAS DWE DA0 DA1 DA2 DA3 DA4 DA5 DA6 DA7 DA8 DBUS0 DBUS1 DBUS2 DBUS3 DBUS4 DBUS5 DBUS6 DBUS7 DBUS8 DBUS9 DBUS10 DBUS11 DBUS12 DBUS13 DBUS14 DBUS15 RESET
VSS
LD1 LD2 LD3 LD4 LD5 LD6 LD7
LWR
LOE
LA0 LA1 LA2 LA3 LA4 LA5 LA6 LA7 LA8 LA9
LA10 LA11
VSS
VCC3
YUV0
YUV1
YUV2
YUV3
YUV4
YUV5
YUV6
YUV7
VSYNC
HSYNC
DCLK
PCLK2XSCN
PCLKQSCN
AUX0/DSAACK
AUX1/DSADATA
AUX2/DATA
AUX3/DSASTB
AUX4
/BUSY
VSSK
VCC3
AUX6
/MRQ
AUX7/SCK
AUX5
DSC_STB
LDO
LROMCE
LSCE0 LSCE1
VCC
GND
Q11V
REGULATOR
V_5V
VCC
1
2
3
4
5
6
7
8
3.3V
TO CD PWB TO CD PWB

– 17 –
XL-70V
Figure 17 BLOCK DIAGRAM (2/6)
1 2 3 4 7 8 9
1110 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
5 6
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
IC14V
ES3883F
VIDEO CD ENCODER
XL100V
27MHz
1
3
2
4
8
5
6
7
IC11V
NJM4555M
BUFFER AMP.
Q12V
-++-
VDAC
V_GND
VD_DO
VD_DI
BUSY
SCK
VD_STB
VSSA
VCC
VSS VSS
VCC
PCLK2X
DSC_D7
HSYNC
DSC_D6
VSYNC
DSC_D5
YUV7
YUV6
YUV5
YUV4
VCC
VSS
YUV3
DSC_D4
YUV2
DSC_D3
YUV1
DSC_D2
YUV0
DSC_D1
VSS
VSS
VCC DSC_CLK AUX0 DSC_D0 AUX1 DSC_STB AUX2 DCLK RST AUX7 MUTE VCC MCLK AUX8 TWS AUX9 TSD TBCK RWS RSTOUT VSS VSS SQCK SQSO
VCM
MIC2
AUX10
AUX12
RBCK
AUX11
VCC
RSD
VSS
AUX15
AUX14
VSSA
VREFP
VCCA
AOR+
AOR-
AOL-
AOL+
MIC1
VREF
VREFM
RSET
COMP
VSSAV VSSAV
CDAC
VCCA VCCA YDAC
VSSAV VSSAV
VDAC
ACAP
AUX6 AUX5 AUX4 AUX3
XOUT
VCC
VSS
XIN
PCLK
TO MAIN PWB
TO MAIN PWBTO CD PWB
LA18/AUX13
AUDIO_CLK LR AUDIO_DATA BCLK
27MHz
R_CH
A_GND
L_CH
A_12V
1
2
1
2
3
4
1
2
3
4
1
2
3
4
5
V_AMP

XL-70V
– 18 –
Figure 18 BLOCK DIAGRAM (3/6)
1
2
1
2
3
4
5
6
7
8
2 3 7
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
X701
8MHz
SEG14 SEG13 SEG12 SEG11 SEG10
SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 SEG0
COM1
COM0
VLC3
VLC2
VLC1
VDD
OSC2
OSC1
VSS
XI
XO
MMOD
VREF
KEY1
KEY2
VREF+
DI
DO CL RESET SYS STOP
X702
32.768kHz
IC701
IX0030S
J
SYSTEM CON
T
MICROCOMP
U
IC805
TA7291S
CD MOTOR DRIVER
REMOCON
MODEL
CD_STB POWER
COM2
COM3
CLID_SW
CLID_PRO
TAPE_SW
CE
Q702
Q703
Q701
RESET
1
RX701
REMOTE
SENSOR
32
SW709-SW713
SW721-SW728
Q708
Q709
LCD701
CFW701
SW700
JOG
A
B
C UP
DOWN
Q706
Q707
SWITCHING
LED+B A_12V
1
2
3
CNS707
SYS STOP
REMOCON
RESET
U-COM VDD
U-CON+5V
P CONT
SW718
D704-709
LED
M_12V
SWITCHING
KEY
TO
POWER
PWB
SWITCHING
538
~
1 4
~39 42 ~
VCD_STB
CLOCK
VCD_BUSY
VCD_CLK VCD_IN VCD_OUT
IC806
IX0031S
CD SER
V
MICROCOM
P
789 654
3
12
1011
13
14
15
16
17
18
19
20
21
22
23 24 25 26 27 28 29 30 3
1
X802
8MHz
IC802
TC9490F
SERVO/SIGNAL
CONTROL
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
X801
16.9344MHz
1
2
3
4
5
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
CFW807
SW730
OPEN/CLOSE
SW802
CD LID
PUNSW
TRY+
TRY-
CCE
BUCK
BUS0
BUS1
XIN
MECHA
TEST
/RESET
XOUT
VAREF
TSW2A
TSW1B
TSW1A
TSWUP
AVSS
D_GND
BCK
LRCK
AOUT
MP RST
MP STB
MP DATA
MP ACK
BCK AOUT SBOK CLCK DATA SFSY SBSY /HSO /UHSO PVDD PDO LRCK
PVREF
VREF
RFGC
TEBC
DVSS
DVDD
XVSS
XVDD
/CCE
RO
DVDD
DVR
LO
DVSS
ZDET
VSS
BUSO
BUS1
BUS2
BUS3
BUCK
RST
VDD
XO
XI
TESIN
DMO
FMO
AVDD3
SEL
TRO
FOO
TEZI
TEI
SBAD
FEI
RFRP
RFZI
RFCT
AVDD
RFI
SLCO
AVSS
VCOF
LPFO
LPFN
17
TMAX
+5V +5V
CD_STB
VD_STB
SCK
BUSY
VD_DI
VD_DO
CLID_OUT
CLID_SW
VD_DO
VD_DI
BUSY
SCK
VD_STB
DVSS DVDD IPF DOUT
TODISPLAYPWB
TOVIDEOPWBTOVIDEOPWB
BI605A CNS605A
1
2 1 2
M_GND
M_12V TOMAINPWB
M
M801
CD LID MOTOR

– 19 –
XL-70V
Figure 19 BLOCK DIAGRAM (4/6)
3
031 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
9
6
SEG31
SEG30
SEG29
SEG28
SEG27
SEG24
SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10
SEG9 SEG8 SEG7 SEG6 SEG5
SEG4
RESET SYS STOP
IC701
IX0030SJ
SYSTEM CONTROL
MICROCOMPUTER
REMOCON CD_STB POWER VCD_IND
SEG32
SEG33
SEG25
SEG26COM2
COM3
CE SOL MOT B-CAN BIAS
P-MUTE
P-STB
CD+B
B-LIGHT
STEREO
SD
MVOL_IND
CLID_OUT
CLID_UP
MVOL_UP
MVOL_DW
CLID_DW
P-CONT
9
1
D
701
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
1 2 3 4 567
IC702
TA7291S
89
MVOL_DW
MVOL_UP
M
M701
JOG MOTOR
LOADING MOTOR DRIVER
M_12V
CL ID_SW
CLID_OUT
VD_DO
VD_DI
BUSY
SCK
VD_STB
CD_STB
TAPE_SW
A_12V
M_12V
D_GND
U_CON5V
SOL
MOT
REC
RUN_PLS
BIAS
B_CAN
TO CD PWB
TO MAIN PWB
SD
STEREO
DO
CL
CE
DI
CD+B
P_MUTE
P_STB
TO MAIN PWB
10
11
538
~
SURR
JOG_DOWN
RUN_PLS
REC
JOG_UP
VCD_STB
CLOCK
VCD_BUSY
VCD
_
CLK
M
M
IC806
IX0031SJ
CD SERVO
MICROCOMPUTER
789 654321
12
1011
13
14
15
16
17
18
19
20
21
22
23 24 25 26 27 28 29 30 31 32 33
35
34
36
37
38
39
40
41
42
43
44
IC801
TA2147F
SERVO PRE AMP.
IC804
LA6548D
FOCUS/TRACKING/
SPIN/SLED DRIVER
1
234
5
6
7
8
9
101112131415
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
13
2
IC807
KIA7805AP
VOLTAGE
REGULATOR
1
2
3
4
1
2
1
2 1 2
3
4
PU-IN
SL-
SL+
SP-
SP+ -
+
+
-
NM802
SPINDLE MOTOR
NM801
SLED MOTOR
NSW801
PICKUP IN
LD
VR
PD
FO-
FO+
TR+
TR-
D-GND
E
A
B
F
C
VREF
+5V
LD
MON
VCC
GND
E
A
B
F
C
1/2VCC
LT0H41M1
1/2V
+5V
PICKUP UNIT
ACTUATOR
Q801
+5V
PUNSW
TRY+
TRY-
CCE
BUCK
BUS0 BUS1 BUS2 BUS3
VDD
MPRST
STB
DATA
ACK
XIN
MECHA
TEST
/RESET
XOUT
VAREF
TSW2A
TSW1B
TSW1A
TSWUP
AVSS
1
2
3
4
5
6
7
8
9
10
11
12
14
13
15
16
17
18
19
20
21
22
23
24
RFRP
RFIS
RFGO
RFGC
RFO
AGCI
VCC
TN1
MDI
LDOx
SEL
TEB
FNI
FPI
TPI
E
F
B
A
TEBC
RFI
RFRP SEL
RFGC
TEO
TEN
RFDC TEI
SBAD
GND
RFN
FEN
FEO
VRO
GVSW
FEI
VCC
MUTE
VCC
REG.
RESET
RES CD
REG
REG
IN
OUT
SP+ SP-
SL+ SL-
+5V
DMO
TRO
FOO
FO+
FO-
TR+
TR-
CD STB
Q861
FMO
+5V CD_8V
+5V +5V
TR-
TR+
FO-
FO+
CD_GND
V_GND
CD_8V
TO VIDEO PWB
TO POWER PWB
V_5V
SWITCHING

XL-70V
– 20 –
Figure 20 BLOCK DIAGRAM (5/6)
C
N
P
F
3 1
5
11 12
13
8
2
IC102
BA3311L
REC./P.B. EQUALIZER AMP.
6 7
9
1
IC101
BA3126N
HEAD
SELECTOR
2
3
4
5
6
9
8
7
PH901
SW901
FOOL
SW902
CAM
1
22
1
M
M901
TAPE
MOTOR
T306
T302
CF352 CF351
24 23 22 21 20 19 18 17 16 15 14 13
10 11 12
9
8
7
6
5
4321
IC303
LA1832S
FM IF DET./FM
MPX./AM IF
1 2 3 4 5 6 7 8 9
10 11
1213141516171819202122
IC302
LC72131
PLL (TUNER)
X352
4.5MHz
X351
VD301-1
SVC348S
VD301-2
SVC348S
VR351
T351
2
2
BF301
B.P.F
1
1 3
IC301
TA7358AP
FM FRONT END
6
5
T304
3 4 9
L303
VD302
7
L302
VD303
8
CF303
CF302
1
2
CNP301
ZD351
REC MUTE
Q105
Q106 REC
150K
150K
MUTE ALC
+
-
-
+
NF
L-IN
R-IN
NF
L-OUT
ALC
R-OUT
Q151
L151
REC
Q172
Q101-Q104
SWITCHING
REC SW
P/B SW
CONT
P/B SW
REC SW
A-12V
L-CH
R-CH
R-CH
L-CH
L-CH
L-CH
A-GND
A-GND
A-GND
R-CH
R-CH
ERASE
TAPE
Rch
Lch
P.F
CAM SW
Q906
Q903
BIAS REC RUN_PLS MOT SOL U_CON 5V D-GND M_12V A_12V TAPE SW
+
-
SOL901
SOLENOID
TAPE
MECHANISM PWB
TAPE
MECHANISM
TO DISPLAY PWB
RECORD/PLAYBACK
HEAD
ERASE
HEAD
Q905 Q904 Q902
A_12V
A_12V
U_CON5V
MOT
M_12V
TAPE MOTOR
DRIVER
SOL
RUN PLS
SOLENOID
DRIVER
REC BIAS
CONT
BIAS OSC
Q151
Q153
Q171
B-CAN(NC) SURROUND
M_GND
X IN NC CE DI CL MO/ST FM FM DO
FM IN
X OUT
VSS
AOUT
AIN
PD
VDD
AM IN
NC
IF IN
IF REQ
SW
VCC
AM ANT
AM OSC
+5V
AM IF
VT
MUTE
R-MUTE
AM IF IN
AM MIX OUT
AM OSC OUT
FM MUTE LEVEL
MO/ST
L-CH OUT
R-CH OUT
MPX VCO
AM LOW
CUT
FM/AM
OUT
MPX IN
AM OSC
OUT
FM AFC
AM RF IN
VSM
AM OSC
IN
AM MIX OUT AM IF IN GND REG FM IF IN SD STEREO FM DET PHASE
(AM/FM) IF OUT PHASE
D_GND
Q351
SWITCHING
R_MUTE
A_GND
+5V
Q360
FM RIPPLE
FILTER
FM+B A_12V
VT VT
FM+B
FM IF
Q305
FM IF FM IF
AM LOOP
ANTENNA
SO301
FM ANTENNA
Q306
Q901
A_12V
TUNER
REC L/R CH
TAPE L/R CH
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
1
2
3
4
5
6
7
1
2
3
4
5
6
7
1 2 3 4 5 6 7 8 9
10 11 12
IF AMP
SWITCHING
SWITCHING
SWITCHING
SWITCHING
SWITCHING
SWTCHING
SWTCHING
SWTCHING