Sony HCD-DP700 User manual

HCD-DP700
US Model
Canadian Model
AEP Model
E Model
SERVICE MANUAL
COMPACT DISC DECK RECEIVER
— Continued on next page —
SPECIFICATIONS
• HCD-DP700isthetuner,deck,CD
and amplifier section in MHC-
DP700.
Model Name Using Similar Mechanism NEW
CD CD Mechanism Type CDM58E-30BD60
Section Base Unit Name BU-30BD60
Optical Pick-up Name A-MAX.3
Tape deck Model Name Using Similar Mechanism NEW
Section Tape Transport Mechanism Type TCM-230MWR41
AUDIO POWER SPECIFICATIONS:
(HCD-DP700 US model only)
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
with 8 ohm loads both channels driven, from 120-10 kHz; rates 100
watts per channel minimum RMS power, with no more than 10%
total harmonic distortion from 250 milliwatts to rated output.
Total harmonic distortion less than 0.07%
(8 ohms at 1 kHz, 50 W)
Amplifier section
US, Canadian model:
Continuous RMS power output (reference)
100 + 100 watts
(8 ohms at 1 kHz, 10% THD)
Total harmonic distortion less than 0.07%
(8 ohms at 1 kHz, 70 W)
European model:
DIN power output (rated) 60 + 60 watts
(8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
80 + 80 watts
(8 ohms at 1 kHz, 10% THD)
Music power output (reference)
150 + 150 watts
(8 ohms at 1 kHz, 10% THD)
Other models:
The following measured at AC 120, 220, 240 V 50/60 Hz
DIN power output (rated) 130 + 130 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
180 + 180 watts
(6 ohms at 1 kHz, 10% THD)
Inputs
GAME IN: voltage 450mV,
(phono jacks) impedance 47 kilohms
MD/VIDEO IN: voltage 450/250 mV,
(phono jacks) impedance 47 kilohms
OPTICAL IN:
(Square optical connector jacks, front panel (North American and
European models only), or front and rear panels (except for North
American and European models))
MIC: sensitivity 1 mV,
(Except for North impedance 10 kilohms
American and
European models)
(mini jack)
Ver 1.0 2001.04
9-873-889-11
2001D0900-1
© 2001. 4
Sony Corporation
Home Audio Company
ShinagawaTec Service Manual Production Group

2
SAFETY CHECK-OUT
(US model only)
After correcting the original service problem, perform the
following safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts forAC leakage. Check leakage as
described below.
LEAKAGE
TheAC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microampers).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operatedAC voltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples of
a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)
Earth Ground
AC
voltmeter
(0.75V)
1.5kΩ
0.15µF
Fig.A. Using an AC voltmeter to check AC leakage.
To Exposed Metal
Parts on Set
Outputs
MD/VIDEO OUT: voltage 250 mV,
(phono jacks) impedance 1 kilohms
PHONES: accepts headphones of
(stereo mini jack) 8 ohms or more
SPEAKER
(Central and South
American models): accepts impedance of 6 to 16 ohms
(Other models): accepts impedance of 8 to 16 ohms
SUB WOOFER: voltage 1 V,
impedance 1 kilohms
CD player section
System Compact disc and digital audio system
Laser Semiconductor laser (λ=780 nm)
Frequency response 2 Hz –20 kHz (±0.5 dB)
Signal-to-noise ratio More than 90 dB
Dynamic range More than 90 dB
DIGITAL OUT OPTICAL
(Square optical connector jack, rear panel)
Tape player section
Recording system 4-track 2-channel stereo
Frequency response 40 –13,000 Hz (±3 dB), using Sony TYPE I
(DOLBY NR OFF) cassette
40 –14,000 Hz (±3 dB), using Sony TYPE II
cassette
Wow and flutter ±0.15% W.Peak (IEC)
0.1% W.RMS (NAB)
±0.2% W.Peak (DIN)
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range 87.5 –108.0 MHz
Antenna FM lead antenna
Antenna terminals 75 ohm unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
North American model: 530 –1,710 kHz
(with the interval set at 10 kHz)
531 –1,710 kHz
(with the interval set at 9 kHz)
European and Middle Eastern models:
531 –1,602 kHz
(with the interval set at 9 kHz)
Other models: 531 –1,602 kHz
(with the interval set at 9 kHz)
530 –1,710 kHz
(with the interval set at 10 kHz)
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz
General
Power requirements
North American model: 120 V AC, 60 Hz
European model: 230 V AC, 50/60 Hz
Mexican model: 120 V AC, 60 Hz
Other models: 120 V, 220 V or 230 - 240 VAC, 50/60 Hz
Adjustable with voltage selector
Power consumption
US model: 170 watts
Canadian model: 170 watts
European model: 180 watts
0.5 watts (during Power Saving Mode)
Other models: 150 watts
Dimensions (w/h/d) Approx. 280 x 360 x 365 mm
Mass
NorthAmerican and European models:
Approx. 10.5 kg
Other models: Approx. 12.0 kg
Design and specifications are subject to change without notice.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINEWITH
MARK 0ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.

3
This appliance is classified as a CLASS 1 LASER product. The
CLASS 1 LASER PRODUCT MARKING is located on the rear
exterior.
Laser component in this product is capable
of emitting radiation exceeding the limit for
Class 1.
CAUTION
Use of controls or adjustments or performance of procedures
otherthanthose specifiedhereinmay result in hazardous radiation
exposure.
Notes on chip component replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
•Keep the temperature of soldering iron around 270˚C
during repairing.
•Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
•Be careful not to apply force on the conductor when soldering
or unsoldering.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
TABLE OF CONTENTS
MODEL IDENTIFICATION
—BACK PANEL —
MODEL
US model
CND model
AEP model
MX model
E51 model
PARTS No.
4-231-829-0s
4-231-829-1s
4-231-829-2s
4-231-829-5s
4-231-829-6s
•Abbreviation
CND : Canadian model
MX : Mexican model
E51 : Chiri and Peru model
PARTS No.
1. GENERAL ·········································································· 4
2. DISASSEMBY ·································································· 6
3. TEST MODE···································································· 13
4. MECHANICAL ADJUSTMENTS ····························· 17
5. ELECTRICAL ADJUSTMENTS ······························· 17
6. DIAGRAMS
6-1. Circuit Board Location ················································· 23
6-2. Block Diagrams ···························································· 24
6-3. Printed Wiring Board BD Section ···························· 26
6-4. Schematic Diagram BD Section ······························· 27
6-5. Printed Wiring Board Main Section ························· 28
6-6. Schematic Diagram Main Section (1/3) ··················· 29
6-7. Schematic Diagram Main Section (2/3) ··················· 30
6-8. Schematic Diagram Main Section (3/3) ··················· 31
6-9. Printed Wiring Board DSP Section ·························· 32
6-10. Schematic Diagram DSP Section (1/2)··················· 33
6-11. Schematic Diagram DSP Section (2/2)··················· 34
6-12. Printed Wiring Board OPT Section ························ 35
6-13. Schematic Diagram OPT Section ··························· 35
6-14. Printed Wiring Board Front Amp Section (AEP/US/
CND model) ································································· 36
6-15. Schematic Diagram Front Amp Section (AEP/US/
CND model) ································································· 37
6-16. Printed Wiring Board Front Amp Section (E51/MX
model) ··········································································· 38
6-17. Schematic Diagram Front Amp Section (E51/MX
model) ··········································································· 39
6-18. Schematic Diagram Surround Amp Section ··········· 40
6-19. Printed Wiring Board Surround Amp Section ········ 40
6-20. Printed Wiring Board Panel Section ······················· 41
6-21. Schematic Diagram Panel Section (1/2) ················· 42
6-22. Schematic Diagram Panel Section (2/2) ················· 43
6-23. Printed Wiring Board Leaf SW Section·················· 44
6-24. Schematic Diagram Leaf SW Section ···················· 45
6-25. Printed Wiring Board Driver Section ······················ 46
6-26. Schematic Diagram Driver Section ························ 47
6-27. Printed Wiring Board Trans Section ······················· 48
6-28. Schematic Diagram Trans Section ·························· 49
6-29. IC Pin Function Description ······································· 50
6-30. IC Block Diagrams ····················································· 56
7. EXPLODED VIEWS
7-1. Main Section ································································· 60
7-2. Front Panel Section······················································· 61
7-3. Chassis Section ····························································· 62
7-4. Tape Mechanism Deck Section-1 (TCM-230MWR41) 63
7-5. Tape Mechanism Deck Section-2 (TCM-230AWR41) 64
7-6. CD Mechanism Deck Section (CDM58E-30BD60) ···· 65
7-7. Base Unit Section (BU-30BD60) ································· 66
8. ELECTRICAL PARTS LIST ······································· 67

4
HCD-DP700 SECTION 1
GENERAL
6
9
q;qa
qf
qg
qh
qj
qk
ql
wa
12345
7
8
qs
qd
w;
wd ws
wf
wg
wh
wj
ef
eg
ek
wk wl e; ea es ed
eh
ej
el
r;
ra
rg
rf
rd
rs
rjrh
Location of Parts and Controls
1@/1 (POWER) button
2DISC 1-3 button
3DISC SKIP EX-CHANGE button
4ZOPEN/CLOSE (disc tray) button
5DISC tray
6bB (play) button
7X (pause) button
8x(stop) button
9>(go forward) button
q; .(go back) button
qa M/+ (fast forward) button
qs m/– (rewind) button
qd VOLUME control knob
qf IR receptor
qg PHONES jack
qh REC PAUSE/START button
qj CD SYNC HI-DUB button
qk DECK B Z
ql DECK A Z
w; DIGITAL IN (OPTICAL)
wa GAME button
ws DIGITAL button
wd MD (VIDEO) button
wf TAPE A/B button
wg TUNER/BAND button
wh CD button
wj DISPLAY
wk SPECTRUM button (US and AEP model only) or
KARAOKE PON button (except for US, AEP model)
wl CLOCK/TIMER SET button
e; TIMER SELECT button
ea EDIT/DIRECTION/PTY (European model only) button
es DOLBY NR/FM MODE/REPEAT button
ed TUNER/MEMORY/PLAY MODE button
ef MOVIE MODE
eg DIGIPAD
eh ENTER
ej TOOL MODE
ek 2CH/MULTI
el EFFECT
r; GROOVE
ra P FILE
rs GAME MODE
rd DSP EDIT
rf MUSIC MODE
rg MULTI CHANNEL DECORDING indicator
rh MIC jack (except for US,AEP model)
rj MIC LEVEL control knob (except for US,AEP model)

5
HCD-DP700
This section is extracted from
instruction manual.
1Turn on the system.
2Press CLOCK/TIMER SET on the
remote.
When you set the time for the first time,
proceed to step 5.
3Press cursor V/v repeatedly to select
CLOCK SET.
4Press ENTER.
5Press cursor V/v repeatedly to set the
hour.
6Press ENTER.
7Press cursor V/v repeatedly to set the
minute.
8Press ENTER.
The clock starts working.
If you have made a mistake or want to change the
time, start over from step 2.
Note
The clock settings are canceled when you disconnect
the power cord or if a power failure occurs.

6
HCD-DP700 SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. CASE (TOP)
Set Case (Top) Loading Panel Front Panel Section
Tape Mechanism Deck
CD PANEL Board, Panel Board, OPT IN Board
Head (A) Board, Head (B) Board And LEAF SW Board
DSP Board And SUB Trans Board
Main Board And Trans Board
FRONT AMP Board And Surround AMP Board
Base Unit
Driver Board, Motor Board And CD Sensor Board
Escutcheon Pad (With TOUCH PAD)
• The equipment can be removed using the following procedure.
1 two screws (case 3 TP2)
2 screw (case 3 TP2)
3 two screws (case 3 TP2)
4 screw (case 3 TP2)
8 case
7 two screws
(+BVTT 3
× 8)
6 three screws (+BVTT 3 × 8)
5 two screws (+BVTT 3 × 8)

7
HCD-DP700
2-2. LOADING PANEL
2-3. FRONT PANEL SECTION
2 Pull-out the disc tray.
4 Pull-out the disc tray.
1 Turn the pulley to the direction of arrow.
pulley
Front panel side
CD mechanism deck (CDM58)
3
0 two screws (+BVTP 3 × 10 )
3 screw (+BVTP 3 × 10)
2 screw
(+BVTP 3
× 10)
1 connector (CN601)
qs connector (CN701)
8 connector (CN2) 7 connector (CN1)
6 flat type wire (CN1001)
9 flat type wire (CN201)
4 three screws (+BVTT 3 × 8)
5 front panel section
qa CD mechanism deck (CDM58)

8
HCD-DP700
2-4.TAPE MECHANISM DECK
2-5. CD PANEL BOARD, PANEL BOARD AND OPT BOARD
2 Tape mechanism deck
1 five screws (+BVTP 2.6 × 8
)
1 five screws
(+BVTP 2.6
× 8)
8 four screws
(+BVTP 2.6
× 8
)
9 five screws
(+BVTP 2.6
× 8)
qa three screws
(+BVTP 2.6
× 8)
qs five screws
(+BVTP 2.6
× 8)
4 two screws
(+BVTP 2.6
× 8)
qd four screws
(+BVTP 2.6
× 8)
two claws
two claws
qh two screws
(+BVTP 2.6
× 8)
two claws
two claws
2 CD panel board
qj OPT IN board
0 PANEL board
qf PANEL board
3 knob (vol)
5 ring (vol)
6 cover (vol)
7 nut
qg flat type wire (CN108)

9
HCD-DP700
2-6. ESCUTCHEON PAD (WITHTOUCH PAD)
2-7. DSP BOARD, SUBTRANS BOARD
1 button (edit)
5 two screws
(TPG +P 2
× 8)
6 two screws
(TPG +P 2
× 8)
3 two screws
(+BVTP 2.6
× 8)
2 two screws
(+BVTP 2.6
× 8)
8 three screws
(+BVTP 2.6
× 8)
9 button (DSP
)
7 holder (pad)
4 escutcheon (pad)
touch pad
qa connector (CN901)
2 two screws
(+BVTP 3
× 8
)
6 two screws
(+BVTP 3
× 8)
7 two screws
(+BVTP 3
× 8)
8 bracket (DSP)
9 DSP board
1 two screws
(+BVTP 3
× 8)
0 two screws
(+BVTP 3
× 8)
qf SUB trans board
wa back panel
wd two screws
(+BVTP 3
× 10 )
ws connector (CN104)
wf fan
qg four screws
(+BVTP 3
× 8)
qd connector
(CN903)
qh two screws
(+BVTP 3
× 8
)
ql screw (+BVTP 3 × 8)
qj two screws
(+BVTP 3
× 8
)
qk two screws
(+BVTP 3
× 8
)
w; screw
(+BVTP 3
× 8)
qs connector (CN902)
5 connector
(CN601)
3 flat type wire (CN603)
4 flat type wire (CN602)

10
HCD-DP700
2-8. MAIN BOARD,TRANS BOARD
2-9. FRONT AMP BOARD, SURROUND AMP BOARD
0 t wo screws
(+BVTP 3 × 8)
1 connector
(CN914)
2 connector
(CN915)
3 connector
(CN913)
qs t wo screws
(+BVTP 3 × 8)
qd MAIN board
4 two screws
(+BVTT 4 × 8)
6 TRANS board
5 two screws
(+BVTT 4 × 8)
7 two screws
(+BVTT 3 × 8)
8 two screws
(+BVTP 3 × 8)
9 cover (heat sink)
qa SURROUND AMP
and FRONT AMP
board
1 screw
(+BVTT 3
× 8)
2 bracket
3 connector (CN803
)
6 FRONT AMP board
0 SURROUND AMP board
4 t wo screws
(+BVTT 3 × 8)
8 t hree screws
(+BVTT 3 × 8)
7 screw
(+BVTT 3 × 8)
5 t wo screws
(+BVTP 3 × 16)
9 t wo screws
(+BVTP 3
× 16)
qa heat sink assy

11
HCD-DP700
2-11. BASE UNIT
2-10. HEAD (A) BOARD, HEAD (B) BOARD AND LEAF SW BOARD
4 screw (+PTT 2 × 4),
ground point
4 screw (+PTT 2 × 4),
ground point
2 LEAF SW board
1 five claws
5 HEAD (A) board
6 HEAD (B) board
3 Remove the four solderings.
5
3
two screws (+PTPWH M2.6), floating
9 two springs (insulator), coil
7 two springs (insulator),
coil
0 two insulators (BU-30)
qa base unit
8 two insulators
(BU-30)
6 two stoppers (BU)
2 screw (DIA. 12), floating
1 flat type wire (CN101)
4 two screws
(+BVTP 2.6
× 8)

12
HCD-DP700
2-12. DRIVER BOARD, MOTOR BOARD AND CD SENSOR BOARD
3 two screws (+BVTP 2.6 × 8)
8 screw (+PTPWH 2.6 × 8)
9 tray
1 screw (+BVTP 2.6 × 8)
0 screw (+BVTP 2.6 × 8)
6 flat type wire (CN721)
5 MOTOR board
qa CD SENSOR board
7 connector(CN722)
2 DRIVER board
4 Remove the two solderings of motor.

13
HCD-DP700
[Cold Reset]
• The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning
the set to the customer.
Procedure:
1. Press three buttons STOP , DISPLAY , and DISC 1
simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously,
and the set is reset.
[Tuner Step Change] (Except for European and Middle Eastern
models)
• A step ofAM channels can be changed over between 9 kHz and
10 kHz.
Procedure:
1. Press POWER button to turn the set ON.
2. Selectthefunction “TUNER”, and press TUNER/BAND button
to select the BAND “AM”.
3. Press POWER button to turn the set OFF.
4. Press ENTER and POWER buttons simultaneously, and the
display of fluorescent indicator tube changes to “AM 9 k STEP”
or “AM 10 k STEP”, and thus the channel step is changed over.
[Function Change Mode]
• Select either VIDEO or MD of the external FUNCTION input.
Procedure:
1. Turn on the power.
2. Hold down MD(VIDEO) button then press POWER button,
and release POWER button first in order not in switch off the
set immediately.
The another function of the previous function is selected, the
input level is also changed and displayed “MD” or “VIDEO”.
[GCTest Mode]
• This mode is used to check the software version, FL tube, LED,
keyboard and VACS.
Procedure:
1. Press three buttons STOP , DISPLAY , and DISC 2
simultaneously.
2. LEDs and fluorescent indicator tube are all turned on.
3. When you want to enter the software version display mode,
press DISC 1 .The model number and destination are displayed.
4. Each time DISC 1 is pressed, the display changes stating from
MC version, GC version, CD version, CDDM, CDMA, CDMB,
BDA, BDB, ST version, TA version, TM version, TC version,
in this order, and returns to the model number and destination
display.
5. When DISC 3 is pressed while the version numbers are being
displayed except model number and destination, year, month
anddayofthe software creation appear.When DISC 3 ispressed
again, the display returns to the software version display. When
DISC 1 is pressed while year, month and day of the software
creationare being displayed, the year, month and day of creation
of the software versions are displayed in the same order of
version display.
6. Press DISC 2 button, and the key check mode is activated.
7. In the key check mode, the fluorescent indicator tube displays
“KOJOVO”. Each time a button is pressed, “KEY” value
increases.
However, once a button is pressed, _it is no longer taken into
account.
“VOL” value increases like 1, 2, 3...if rotatingVOLUME knob
in “+” direction, or it decreases like 0, 9, 8...if rotating in
“_”direction.
8. Also when DISC 3 is pressed after lighting of all LEDs and FL
tubes, value of VACS appears.
9. To exit from this mode, press three buttons in the same manner
as step 1, or disconnect the power cord.
[MCTest Mode]
• This mode is used to check operations of the respective sections
of Amplifier, Tuner, and Tape.
Procedure:
• To enter MC Test Mode
1. Press the POWER button t turn on the set.
2. Press the three buttons of STOP , DISPLAY and DISC 3
simultaneously.
3. Cursor segment flash on the FL display tube. The input
FUNCTION is changed to GAME.
* Check of Amplifier
Initial settings: Input ,GAME
EQ ,FLAT
Mode ,MUSIC
VA CS ,OFF
Output channel switching:
MUSIC key: L ,LR,R through
MOVIE key: L ,SL R ,SR through
GAME key:L ,L, SL, C R ,R, SR, SW through
TOOL key: L ,CR,SW through
1. When the VOLUME control knob is turned clockwise even
slightly, the sound volume increases to is maximum and a
message “VOLUME MAX” appears for two seconds, then the
display returns to the original display.
2. When the VOLUME control knob is tuned counter-clockwise
even slightly, the sound volume decreases to its minimum and a
message “VOLUME MIN” appears for two seconds, then the
display returns to the original display.
* Tuner function
1. In the test mode, the default-preset channel is called even when
the TUNER is selected and an attempt is made to call the preset
channel that has been stored in memory. (It means that the
memory is cleared.)
2. The minimum, center and maximum frequency of each band is
set then.
* Tape recording test
1. To enter the MC Test Mode.
2. Load tapes in both tape decks A and B.
3. Press the REC button to start recording.
4. Pressing the M/+ , m/– buttons during recording returns
thetape to the recording start position and stops itat this position.
5. Pressing the “High Speed Dubbing” key while playing back the
tape of deck B switches the playback speed between “Normal
Speed” and “High Speed”.
Note:
When the playback direction of the tape is set to other than “ONY
WAY”, the restriction on the number of times playback which can
be repeated will be cleared.
* AMS Test Mode
1. Set TAPE function
2. Select the desired loop by pressing the PLAY MODE button.
Insert a test tape AMS-110A or AMS-120 to Deck A.
3. Press the SPECTRUM (or KARAOKE PON )button to enter
the AMS test mode.
4. After a tape is rewound first, the FF AMS is checked, and the
mechanism is shut off after detecting theAMS signal the AMS
signal twice.
5. Then the REW AMS is checked and the mechanism is shut off
after detecting the AMS signal twice.
SECTION 3
TEST MODE

14
HCD-DP700
[Tape Deck Section]
• The sequence during the aging mode is following as below.
• If an error occurred, stop display that step.
Aging mode sequence (Tape deck section):
6. When the check is complete, a message of either OK or NG
appears.
* To return to normal mode again.
1. When you want to exit this mode, press the POWER button.
2. The cold reset is enforced at the same time.
[Aging Mode]
This mode can for operation check of tape deck section and CD
section.
• If an error occurred:
The aging operation stops and display then status.
• If no error occurs:
The aging operation continues repeatedly.
Procedure:
1. Press the CD button to select the function “CD”.
2. Load the tapes into the decks A and B respectively.
3. Set a disk in “DISK1” tray.
4. Press the PLAY MODE button to set the “ALL DISCS” mode,
and press the REPEAT button to “REPEAT” off.
5. Press three buttons of STOP , ENTER , and DISC SKIP/EX-
CHANGE simultaneously.
6. The aging mode is activated, if the indicator of DOLBY NR is
blinking.
7. To exit from the aging mode, operate the cold reset.
FWD play the tape A
“TAPE A AG-2”
Fast forward the tapeA
“TAPE A AG-3”
RVS play the tape A
“TAPE A AG-4”
Rewind the tape A
“TAPE A AG-5”
FWD play the tape B
“TAPE B AG-2”
Rewind the tape A and B
“TAPE A AG-1”
Fast forward the tape B
“TAPE B AG-3”
RVS play the tape B
“TAPE B AG-4”
Rewind the tape B
“TAPE B AG-5”
Shut off
2 minutes
Shut off or 20 seconds
2 minutes
Shut off
2 minutes
Shut off or 20 seconds
2 minutes
Shut off

15
HCD-DP700
[CD Section]
• The sequence during the aging mode is following as below.
Aging mode sequence (CD section):
Disc 1 Chucking
TOC Read
Tray Turn
2 seconds
Track 1 Play
Last Track Play
2 seconds
Error History Display
1. BD Error History Display
11 digits are displayed after the D character.
Example of display : D00209010100
1st digit : Indicates the error history number.
0 is the latest error
2nd to 3rd digits : Indicates details of the problem.
01 : Cannot focus
02 : GFS NG
03 : Start time over
04 : Focus deviates continuously
05 : Q code absent for some time
4th to 5th digits : Processing when problems occur
01 : Currently SHIP processing
02 : Currently POWER OFF processing
03 : Currently initializing
04 : Currently stopping
05 : CurrentlySTOP operation processing
06 : Currently start processing
07 : Currently TOC reading
08 : Currently searching
09 : Currently playing
0A : Currently pausing
0B : Currently PLAY manual searching
0C : Currently PAUSE manual searching
6th to 7th digits : Operations currently performed for problems
which have occurred
8th to 9th digits : Rotation speed of DISC when problems occur
01 : x1 speed
02 : x2 speed
10th to 11th digits : Fixed at 00
2. CDM Error History <CDM58 Error History Display>
11 digits are displayed after the M character.
Example of display : M0FF400220000
1st digit : Indicates the error history number.
0 is the latest error
2nd to 3rd digits : Indicates the details of the problem.
01 : Initialization table is currently rotating 1
02 : Initialization table is currently rotating 2
03 : Initialization table is currently rotating 3
04 : Currently DISC SKIP in OPEN mode
05 : CLOSE table is currently rotating
06 : Chucking table is currently rotating
07 : Currently performing SHIP operations
08 : Currently performing release operations
09 : Currently performing POWER OFF
operations
4th to 5th digits : Processing when problems occur
01 : Currently performing SHIP operations
02 : Currently performing POWER OFF
operations
03 : Currently initializing
04 : Currently performing release operations
05 : Currently in chuck stop state
06 : Currently performing CLOSE operations
07 : Currently performing exchange CLOSE
operations
08 : Currently performing OPEN operations
09 : Currently performing OPEN POP UP
operations
0A: Currently performing exchange OPEN
operations
6 to 7th digits : Operations currently performed for problems
which have occurred
8th to 9th digits : Targets of processing when problems occur
Same as 4th to 5th digits
10th to 11th digits : Fixed at 00
[CD Ship Mode (No Memory Clear)]
• This mode moves the position to the position durable to vibra-
tion Use this mode when returning the set to the customer after
repair.
Procedure:
1. Press POWER button to turn the set ON.
2. Press three CD button and POWER button simultaneously.
3. After the “STANBY” display blinks six times, a message
“LOCK” is displayed on the fluorescent indicator rube, and the
CD ship mode is set.
[CD Ship Mode (Memory Clear)]
• This mode moves the pickup to the position durable to vibra-
tion. Use this mode when returning the set to the customer after
repair.
Procedure:
1. Press POWER button to turn the set ON.
2. Press three buttons ENTER , DISC 1 , and CD button
simultaneously.
3. After the “STANDBY” display blinks six times, a message
“LOCK” is displayed on the fluorescent indicator tube, and the
CD ship mode is set.

16
HCD-DP700
[CD Service Mode]
• This mode can run the CD sled motor freely. Use this mode, for
instance, when cleaning the pickup.
Procedure:
1. Press POWER button to turn the set ON.
2. Select the function “CD”.
3. Press three buttons ENTER , DISC 1 , and STOP
simultaneously.
4. The CD service mode is selected.
5. With the CD in stop status, press M/+ button to move the
pickup to outside track, or press m/– button to inside track.
6. To exit from this mode, perform as follows:
1) Move the pickup to the most inside track.
2) Press POWER button to turn the set OFF.
Note:
• Always move the pickup to most inside track when exiting from
this mode. Otherwise, a disc will not be unloaded.
• Do not run the sled motor excessively, otherwise the gear can
be chipped.
[VACS ON/OFF MODE]
• This mode is used to switch ON and OFF the VACS (Variable
Attenuation Control System).
Procedure:
Press the three buttons STOP , ENTER and SPECTRUM or
KARAOK PON simultaneously.
[VCD COLOR SYSTEM MODE]
• This mode is used for changing the COLOR SYSTEM of THE
VCD.
Procedure:
1. Set the standby mode.
2-1.Press the two buttons POWER and AMS+ simultaneously to
set the COLOR SYSTEM of the VCD to AUTO.
2-2.Press the two buttons POWER and AMS– simultaneously to
fix the COLOR SYSTEM of the VCD to PAL.
2-3.Press the two buttons POWER and PAUSE simultaneously to
fix the COLOR SYSTEM of the VCD to NTSC.
3. The powerturnsON automatically and the function setsto“CD”.
4. The FL tube (fluorescent indicator) shows the COLOR
SYSTEM mode set.
5. The COLOR SYSTEM mode set is maintained (memorized)
until COLD RESEY is executed.
[REPEAT 5 LIMIT OFF MODE]
• This mode is used to enable infinite repetitions.
Normally, the number of repetitions allowed is 5.
Procedure:
1. Press the POWER button to turn ON the power supply.
2. Set the function “CD”.
3. Press the three burtons ENTER , DISC 3 , and STOP is
simultaneously.
4. Infinite repetitions is enabled.
5. This state is maintained ( memorized ) until COLD RESET is
executed.

17
HCD-DP700
SECTION 4
MECHANICAL ADJUSTMENTS SECTION 5 ELECTRICAL ADJUSTMENTS
0 dB=0.775 V
DECK SECTION
1. Demagnetize the record/playback head with a head
demagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to the
parts adjust.
4. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
5. The adjustments should be performed in the order given in this
service manual. (As a general rule, playback circuit adjustment
should be completed before performing recording circuit
adjustment.)
6. The adjustments should be performed for both L-CH and R-
CH.
7. Switches and controls should be set as follows unless otherwise
specified.
• Test Tape
Record/Playback Head Azimuth Adjustment
Tape Signal Used for
P-4-A100 10 kHz, –10 dB Azimuth Adjustment
WS-48B 3 kHz, 0 dB Tape Speed Adjustment
P-4-L300 315 Hz, 0 dB Level Adjustment
DECK A DECK B
Note: Perform this adjustments for both decks
Procedure:
1. Mode: Playback
Precaution
1. Clean the following parts with a denatured alcohol-moistened
swab:
record/playback heads pinch rollers
erase head rubber belts
capstan idlers
2. Demagnetize the record/playback head with a head
demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
Torque Measurement
set
main board
CN301
Pin 3(L-CH)
Pin 1(R-CH)
main board
CN301
Pin 2(GND)
+
–
level mete
r
test tape
P-4-A100
(10 kHz, –10 dB)
3.06 N •m to 6.96 N •m
31 to 71 g •cm
(0.43 –0.98 oz •inch)
0.19 N •m to 0.58 N •m
2 to 6 g •cm
(0.02 –0.08 oz •inch)
3.06 N •m to 6.96 N •m
31 to 71 g •cm
(0.43 –0.98 oz •inch)
0.19 N •m to 0.58 N •m
2 to 6 g •cm
(0.02 –0.08 oz •inch)
6.96 N •m to 14.02 N •m
71 to 143 g •cm
(0.98 –1.99 oz •inch)
9.80 N •m
100 g or more
(3.53 oz or more)
9.80 N •m
100 g or more
(3.53 oz or more)
Mode Torque meter
CQ-102C
CQ-102C
CQ-102RC
CQ-102RC
CQ-201B
CQ-403A
CQ-403R
Meter reading
FWD
FWD
back tension
REV
REV
back tension
FF/REW
FWD tension
REV tension

18
HCD-DP700
2. Turn the adjustment screw and check output peaks. If the peaks
do not match for L-CH and R-CH, turn the adjustment screw
so that outputs match within 1dB of peak.
3. Mode: Playback
4. After the adjustments, apply suitable locking compound to the
pats adjusted.
Adjustment Location: Playback Head (Deck A).
Record/Playback/Erase Head (Deck B).
Tape Speed Adjustment DECK B
Note: Start the Tape Speed adjustment as below after setting to the test
mode.
In the test mode, the tape speed is high during pressing the
CD SYNC HI-DUB button.
Procedure:
1. Turn the power switch on.
2. Press the xbutton, ENTER button and DISC 3 button
simultaneously.
(The “TEST MODE”on the fluorescent indicator tube display
while in the test mode.)
To exit from the test mode, press the ?/1button.
Mode: Playback
1. Insert the WS-48B into the deck B.
2. Press the gG button on the deck B.
3. Press the CD SYNC HI-DUB button in playback mode.
Then at HIGH speed mode.
4. Adjust RV1001 on the LEAF SW board do that frequency
counter reads 6,000 ± 30 Hz.
5. Press the CD SYNC HI-DUB button.
Then back to NORMAL speed mode.
6. Adjust RV1002 on the LEAF SW board so that frequency
counter reads 3,000 ± 15 Hz.
Adjustment Location: LEAF SW board
Playback level Adjustment DECK A DECK B
Procedure:
Mode: Playback
Deck A is RV302 (L-CH), Deck B is RV303 (L-CH) so that
adjustment within adjustment level as follows.
Adjustment Level:
CN301 PB level: 334.4 to 748.7 mV (–6.8 dB ± –0.5 dB) level
difference between the channels: within ±0.5 dB
Adjustment Location: MAIN board
Sample Volue of Wow and Flutter: 0.3% or less W. RMS
(WS-48B)
Screw
position
L-CH
peak
within
1dB
Output
level
L-CH
peak R-CH
peak
within
1dB
Screw
position
R-CH
peak
MAIN
board
CN301
set
test tape
P-4-A100
(10 kHz, –10 dB)
pin 1
oscilloscop
e
L-CH
R-CH
VH
waveform of oscilloscope
in phase 45°90°135°180°
good wrong
pin 2
pin 3
L
R
+
–
set
test tape
WS-48B
(3 kHz, 0 dB)
main board
CN301 (Pin 3: L-CH)
(Pin 1: R-CH)
frequency counter
+
–
set
test tape
P-4-L300
(315 Hz, 0 dB)
main board
CN301 (Pin 3: L-CH)
(Pin 1: R-CH)
level meter
forward
reverse

19
HCD-DP700
4. Mode: Record
5. Mode: Playback
6. Confirm playback the signal recorded in step 3 become
adjustable level as follows.
If these levels do not adjustable level, adjustment the RV301
(L-CH) and RV351 (R-CH) on the MAIN board to repeat steps
4 and 5.
Adjustable level:
CN301 PB level: 47.2 to 53.0 mV (–27.3 to –26.3 dB)
Adjustment Location: MAIN board
[MAIN BOARD] (Component Side)
[LEAF SW BOARD] (Component Side)
REC Bias Adjustment DECK B
Procedure:
INTRODUCTION
When set to the test mode performed in Tape SpeedAdjustment,
when the tape is rewound after recording, the “REC memory mode”
which rewinds only the recorded portion and playback is set.
This “REC memory mode”is convenient for performing this
adjustment. During recording, the input signal FUNCTION will
automatically switch to VIDEO.
(If do not operation of stopped from recording complete, and rotette
of shuttle knob then rewind to recording start position.)
1. Press MD (VIDEO) button to select VIDEO. (This step is not
necessary if the above test mode has already been set.)
2. Insert a tape into deck B.
3. After press REC PAUSE/START button, press REC PAUSE/
START button, then recording start.
4. Mode: Record
5. Mode: Playback
6. Confirm playback the signal recorded in step 3 become
adjustable level as follows.
If these levels do not adjustable level, adjustment the RV304
(L-CH) and RV354 (R-CH) on theAUDIO board to repeat steps
4 and 5.
Adjustable level: Playback output of 315 Hz to playback output
of 10 kHz: ±1.0 dB
Adjustment Location: MAIN board
REC Level Adjustment DECK B
Procedure:
INTRODUCTION
When set to the test mode performed in Tape SpeedAdjustment,
when the tape is rewound after recording, the “REC memory mode”
which rewinds only the recorded portion and playback is set.
This “REC memory mode”is convenient for performing this
adjustment. During recording, the input signal FUNCTION will
automatically switch to VIDEO.
(If do not operation of stopped from recording complete, and rotate
of shuttle knob then rewind to recording start position.)
1. Press MD (VIDEO) button to selectVIDEO. (This step is not
necessary if the above test mode has already been set.)
2. Insert a tape into deck B.
3. After press REC PAUSE/START button, press REC PAUSE/
START button, then recording start.
attenuator
set
MD/VIDEO (AUDIO) IN
1) 315 Hz
2) 10 kHz 50 mV (–23.8 dB)



600 Ω
blank tap
e
CN-123
AF OSC
+
–
set
recorded
portion
CN301 (Pin 3: L-CH)
(Pin 1: R-CH)
level mete
r
set
MD/VIDEO (AUDIO) IN
315 Hz, 50 mV (–23.8 dB) blank tape
CS-123
600 Ω
attenuator
AF OSC
+
–
set
recorded
portion
CN301 (Pin 3: L-CH)
(Pin 1: R-CH)
level meter
TAPE SPEED
RV1002 RV1001
(NORMAL) (HIGH)
CN1001
         
CN301
RV354 RV304 RV351
CN304
T11
RV11
RV302
RV301
RV303
REC LEVEL (L)
(B)
PB LEVEL (L)
(A)
PB LEVEL (L)
(B)
REC LEVEL (R)
(B)
REC LEVEL (R)
(A) REC LEVEL (L)
(A)

20
HCD-DP700
FMTuned Level Adjustment
Procedure:
1. Supply a 28 dB 98 MHz signal from theANTENNA terminal.
2. Tune the set to 98 MHz.
3. Adjust RV11to the point (moment) when the TUNED indicator
will change from going off to going on.
Adjustment Location: MAIN board
Null Adjustment
Procedure:
1. Supply a 60 dB 98 MHz signal from theANTENNA terminal.
2. Tune the set to 98 MHz.
3. Measure voltage between pin 21 of IC 601. Adjust T11 ubtil
the voltage becomes 0V.
Adjustment Location: MAIN board
Adjustment Location
[MAIN BOARD] Component side
FM RF SSG
75 Ωcoaxial
Carrier frequency : 98 MHz
Modulation : AUDIO 1 kHz, 75 kHz
deviation (100%)
Output level : 28 dB (at 75 W open)
FM ANTENNA terminal
(TM601)
set
FM RF SSG
75 Ωcoaxial
Carrier frequency : 98 MHz
Modulation : AUDIO 1 kHz, 75 kHz
deviation (100%)
Output level : 60 dB (at 75 W open)
FM ANTENNA terminal
(TM601)
set
CD SECTION
Note :
1. CD Block is basically designed to operate without adjustment.
Therefore, check each item in order given.
2. Use LUV-P01 (4-999-032-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10MΩimpedance.
4. Clean the object lens by an applicator with neutral detergent
when the signal level is low than specified value with the
following checks.
S-Curve Check
Procedure :
1. Connect oscilloscope to TP (FE).
2. Connect between TP (FE) and TP (DVC ( 1.65 V) by lead
wire.
3. Turn Power switch on.
4. Load a disc (LUV-P01) and actuate the focus search. (In
consequence of open and close the disc tray, actuate the focus
search)
5. Confirm that the oscilloscope waveform (S-curve) is
symmetrical betweenA and B.And confirm peak to peak level
within 2 ±0.5 Vp-p.
6. After check, remove the lead wire connected in step 2.
Note : •Try to measure several times to make sure than the ratio
of A : B or B : A is more than 10 : 7.
•Take sweep time as long as possible and light up the
brightness to obtain best waveform.
RF Level Check
Procedure :
1. Connect oscilloscope to TP2 (RFDC) and TP1 (RFAC).
2. Turned Power switch on.
3. Load a disc (LUV-P01) and playback.
4. Confirmthatoscilloscope waveform is clear and check RF signal
level is correct or not.
BD board Oscilloscope
TP(FE)
TP(DVC)
symmetry
S-curve waveform
within 4 ±1Vp-p
A
B
TP(RFDC)
TP(RFAC)
BD board oscilloscope
CN301
RV354 RV304 RV351
CN304
T11
RV11
RV302
RV301
RV303
NULL
FM TUNED LEVEL