Sony HCD-D390 - Compact Audio And Video System User manual

HCD-D390/D790/G5500/
XB33/XB44/XB50/XB60
SERVICE MANUAL
COMPACT DISC DECK RECEIVER
MICROFILM
Model Name Using Similar Mechanism HCD-D290/
G3300/XB3
CD Mechanism Type CDM37L-5BD29AL
Base Unit Name BU-5BD29AL
Optical Pick-up Name KSS-213D/Q-NP
Model Name Using Similar Mechanism HCD-D290/
G3300/XB3
Tape Transport Mechanism Type TCM-220WR2
•HCD-D390/D790/G5500/XB33/XB44/
XB50/XB60 is the tuner, deck, CD and
amplifiersectioninLBT-D390/D790/G5500/
XB33/XB44/XB50/XB60.
— Continued on next page —
SPECIFICATIONS
US Model
HCD-D390/D790/G5500
Canadian Model
HCD-390/D790
AEP Model
UK Model
HCD-XB50/XB60
E Model
Australian Model
HCD-XB33/XB44
Photo: HCD-XB44
For the U.S. model
AUDIO POWER SPECIFICATIONS
POWER OUTPUTAND TOTAL HARMONIC DISTORTION:
With 8 ohm loads, both channels driven, from 70-20,000 Hz; rated 100
watts per channel minimum RMS power, with no more than 0.9 % total
harmonic distortion from 250 milliwatts to rated output.
Amplifier section
(HCD-D390/D790/G5500)
Continuous RMS power output:
120 + 120 watts (8 ohms at 1 kHz, 10% THD)
Total harmonics distortionm:
Less than 0.07% (8 ohms at 1 kHz, 50 W)
(HCD-XB50)
DIN power output (Rated):80 + 80 watts (8 ohms at 1 kHz, DIN)
Continuous RMS power output (Reference):
100 + 100 watts (8 ohms at 1 kHz, 10% THD)
Music power output (Reference):
170 + 170 watts (8 ohms at 1 kHz, 10% THD)
(HCD-XB60)
DIN power output (Rated):
100 + 100 watts (8 ohms at 1 kHz, DIN)
Continuous RMS power output (Reference):
120 + 120 watts (8 ohms at 1 kHz, 10% THD)
Music power output (Reference):
210 + 210 watts (8 ohms at 1 kHz, 10% THD)
(HCD-XB33)
The following measured at AC 120/240 V, 50 Hz
DIN power output (Rated):
100 + 100 watts (6 ohms at 1 kHz, DIN)
Continuous RMS power output (Reference):
120 + 120 watts
(6 ohms at 1 kHz, 10% THD)
Peak music power potput (Reference):
1,500 watts
(HCD-XB44)
The following measured at AC 120/240 V, 50 Hz
DIN power output (Rated):
120 + 120 watts (6 ohms at 1 kHz, DIN)
Continuous RMS power output (Reference):
140 + 140 watts
(6 ohms at 1 kHz, 10% THD)
Peak music power output (Reference):
2,000 watts
*Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol aare
trademarks of the Dolby Laboratories Licensing
Corporation.
CD
Section
Tape Deck
Section

Inputs
PHONO IN (phono jacks):sensitivity 3 mV, impedance 47 kilohms
MIX MIC (phone jack): sensitivity 1 mV, impedance 10 kilohms
(HCD-D390/D790/G5500)
VIDEO (AUDIO) IN (phono jacks):
sensitivity 250 mV, impedance 47 kilohms
(HCD-XB33/XB44/XB50/XB60)
VIDEO/MD (AUDIO) IN (phono jacks):
sensitivity 250 mV, impedance 47 kilohms
Outputs
PHONES (stereo phone jack):
accepts headphones of 8 ohms or more
(HCD-XB33/XB44/XB50/XB60)
VIDEO/MD (AUDIO) OUT (phono jacks):
voltage 250 mV, impedance 1 kilohm
SPEAKER:
(HCD-D390/D790/G5500/XB50/XB60)
accepts impedance of 8 to 16 ohms
(HCD-XB33/XB44) impedance of 6 to 16 ohms
SURROUND SPEAKER:
(HCD-D790/XB33/XB50/XB60 only)
accepts impedance of 16 ohms
CD player section
System Compact disc and digital audio system
Laser Semiconductor laser (λ= 780nm).
Emission
duration: continuous
Laser output Max. 44.6µW*
*This output is the value measured at a
distance of 200 mm from the objective lens
surface on the Optical Pick-up Block with 7
mm aperture.
Wavelength 780 – 790 nm
Frequency response 2 Hz – 20 kHz (±0.5 dB)
Signal-to-noise ratio More than 90 dB
Dynamic range More than 90 dB
(HCD-XB33/XB44/XB50/XB60)
CD DIGITALOUT
(square optical connector jack, rear panel)
Wave length: 600 nm
Output level: – 18 dBm
Tape player section
Recording system 4-track 2-channel stereo
Frequency response (DOLBY NR OFF)
60 – 13,000 Hz (±3 dB), using a Sony
TYPE I cassette
60 – 14,000 Hz (±3 dB), using a Sony
TYPE II cassette
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
(2 band model)
NorthAmerican model:: 87.5 - 108.0 MHz (100 kHz step)
Other models: 87.5 - 108.0 MHz (50 kHz step)
(3 band model) 87.5 -108.0 MHz (50 kHz step)
(4 band model) 87.5 -108.0 MHz (50 kHz step)
65.0 - 74.0 MHz (10 kHz step) OIRT
UKV: 65.0 - 74.0 MHz (10 kHz step) POLAR
STEREO
Antenna FM wire antenna
Antenna terminals 75 ohm unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
(2 band model)
NorthAmerican model: 530 – 1,710 KHz (with the tuning interval set
at 10 kHz)
531 – 1,710 KHz (with the tuning interval set
at 9 kHz)
Other models: 531 – 1,602 kHz
(with the tuning interval set at 9 kHz)
530 – 1,710 KHz
(with the tuning interval set at 10 kHz)
(3 band and 4 band models):
MW: 531 – 1,602 kHz
(with the tuning interval set at 9 kHz)
LW: 153 – 279 kHz
(with the tuning interval set at 3 kHz)
Antenna AM loop antenna, External antenna terminals
Intermediate frequency 450 kHz
General
Power requirements
NorthAmerican model: 120 V AC, 60 Hz
European model: 230 V AC, 50/60 Hz
Mexican model: 120 V AC, 50/60 Hz
Australian and SouthAfrican models:
220 – 240 V AC, 50/60 Hz
Thailand model:: 220 – 240V AC, 50/60 Hz
Other models: 110 – 120 V or 220 – 240 V
AC, 50/60 HzAdjustable with voltage selector
Power consumption
(HCD-D390/G5500): 170 watts
(HCD-D790): 198 watts
(HCD-XB50): 190 watts
(HCD-XB60): 230 watts
(HCD-XB33): 240 watts
(HCD-XB44): 250 watts
Dimensions (w/h/d) Approx. 355 x 425 x 435 mm (14 x 16 3/4x 17
1/4in) incl. projecting parts and controls
Mass
(HCD-D390/G5500): Approx. 12.5 kg (27 lb 9 oz.)
(HCD-D790/XB50/XB60): Approx. 13.0 kg (28 lb 11 oz.)
(HCD-XB33/XB44): Approx. 14.0 kg (30 lb 14 oz.)
Supplied accessories: AM loop antenna (1)
Remote RM-SD70S (1)
SizeAA (R6) batteries (2)
FM wire antenna (1)
Speaker cords* (2)
* except for HCD-D390/G5500/XB33/XB50
Design and specifications are subject to change without notice.
— 2 —

— 3 —
After correcting the original service problem, perform the
following safety checks before releasing the set to the customer:
Checktheantennaterminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts forAC leakage. Check leakage as
described below.
LEAKAGETEST
The AC 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 microamperes).
Leakage current can be measured by any one of three methods.
1. Acommercial 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 2VAC range are suitable. (See
Fig. A)
SAFETY CHECK-OUT
To Exposed Metal
Parts on Set
0.15
µ F1.5 k
Ω
AC
Voltmeter
(0.75V)
Earth Ground
Fig.A. Using an AC voltmeter to check AC leakage.
This appliance is classified as a CLASS 1 LASER product. The
CLASS 1 LASER PRODUCT MARKING is located on the rear
exterior.
The following caution label is located inside the unit.
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
otherthanthosespecifiedhereinmayresultinhazardousradiation
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.
SAFETY-RELATED COMPONENTWARNING!!
COMPONENTS IDENTIFIED BY MARK !OR DOTTED LINEWITH
MARK !ON 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 !SUR 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.

— 4 —
SERVICING NOTES
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.
MODEL IDENTIFICATION
– BACK PANEL –
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
TABLE OF CONTENTS
1. GENERAL
– FRONT PANEL – ···························································· 5
– BACK PANEL – ······························································ 6
2. DISASSEMBLY ····························································· 8
3. TEST MODE ··································································· 16
4. MECHANICAL ADJUSTMENTS ···························· 18
5. ELECTRICAL ADJUSTMENTS
DECK Section ································································· 18
Tuner Section ··································································· 21
CD Section······································································· 23
6. DIAGRAMS
6-1. Circuit Board Location ···················································· 25
6-2. Block Diagrams
– CD Section –································································· 26
– Tuner Section – (AEP, UK model) ······························· 27
– Tuner Section – (East European, CIS model)·············· 29
– Main Section –······························································ 31
6-3. Printed Wiring Board – BD Section – ····························· 35
6-4 Schematic Diagram – BD Section – ································ 37
6-5. Printed Wiring Board – CD Motor Section – ················· 39
6-6. Schematic Diagram – CD Motor Section – ···················· 41
6-7. Schematic Diagram – Tuner Section –
(AEP, UK model)····························································· 43
6-8. Printed Wiring Board – Tuner Section –
(AEP, UK model)····························································· 45
6-9. Printed Wiring Board – Tuner Section –
(East European, CIS model) ············································ 46
6-10. Schematic Diagram – Tuner Section –
(East European, CIS model) ············································ 47
6-11. Printed Wiring Board – Deck Section – ························· 49
6-12. Schematic Diagram – Deck Section – ···························· 51
6-13. Schematic Diagram – Switch Section – ·························· 53
6-14. Printed Wiring Board – Switch Section –······················· 55
6-15. Printed Wiring Board – Headphone-Mic Section –········ 56
6-16. Schematic Diagram – Headphone-Mic Section – ··········· 57
6-17. Printed Wiring Board – Panel Section – ·························59
6-18. Schematic Diagram – Panel Section –····························· 61
6-19. Printed Wiring Board – Power Section – ························ 63
6-20. Schematic Diagram – Power Section – ··························· 65
6-21. Printed Wiring Board – Main Section – ························· 67
6-22. Schematic Diagram – Main Section (1/5) – ···················· 69
6-23. Schematic Diagram – Main Section (2/5) – ···················· 71
6-24. Schematic Diagram – Main Section (3/5) – ···················· 73
6-25. Schematic Diagram – Main Section (4/5) – ···················· 75
6-26. Schematic Diagram – Main Section (5/5) – ···················· 77
6-27. IC Block Diagrams ·························································· 79
6-28. IC Pin Function Description ············································ 84
7. EXPLODED VIEWS ····················································· 87
8. ELECTRICAL PARTS LIST ······································ 96
PARTS No.
MODEL PARTS No.
XB33:E,Argentine models 4-996-410-0π
XB33:Mexican model 4-996-410-2π
XB33:Australian model 4-996-410-3π
XB33:South African model 4-996-410-4π
D390:US model 4-996-411-0π
D390:Canadian model 4-996-411-1π
XB50:AEP,UK models 4-996-411-2π
XB50:East European,CIS models 4-996-411-3π
G5500 4-996-411-4π
XB44:E,Argentine models 4-996-412-0π
XB44:Mexican model 4-996-412-2π
XB44:Australian model 4-996-412-3π
XB44:South African model 4-996-412-4π
D790:US model 4-996-419-0π
D790:Canadian model 4-996-419-1π
XB60:AEP,UK models 4-996-419-2π
XB60:East European,CIS models 4-996-419-3π

— 5 —
– FRONT PANEL –
SECTION 1
GENERAL
123 4 67
89
%ª ^º
%¶ %•
%§
5
!º !¡
!™
!∞
!•
!£ !¢
@¡ @™ @£
#¡ #™ #£
#¢
&º ^¶
^•
^ª
^¡ ^™ ^£ ^¢
^§ ^∞
#∞#§#• #¶#ª
B
B
A
!ª @º
@¢ @∞
!§
!¶
@•
@§ @¶
@ª #º
see B
%¢ %∞
%£
%¡ %™
$§
$£
$¢
$º
$¶
$∞
$™
$¡
$ª$• %º
A
see A
1POWER button
2DISPLAY/DEMO button
3SPECTRUM ANALYZER button
4ENTER/NEXT button
5TUNER MEMORY button
6TUNING MODE button
7TUNER/BAND button
8TUNING – button
9TUNING + button
!º PTY button (AEP, UK model)
!¡ STEREO/MONO button
!™ EFFECT button
!£ GROOVE button
!¢ FUNCTION button
!∞ VOLUME knob
!§ SUPER WOOFER button
!¶ SUPER W MODE
(D790/XB44/XB60 model)
!• GEQ button
!ª DECK B ª(play) button
@º DECK B ·(play) button
@¡ DECK B p(stop) button
@™ DECK B 0(backward) button
@£ DECK B )(forward) button
@¢ DECK B P(pause) button
@∞ DECK B rREC button
@§ H SPEED DUB button
@¶ CD SYNC button
@• DECK B 6EJECT button
@ª CD 6OPEN button
#º CD ·(play) button
#¡ DISK SKIP button
#™ CD P(pause) button
#£ CD p(stop) button
#¢ CD )(forward) button
#∞ ≠AMS ±knob
#§ CD 0(backward) button
#¶ FLASH button
#• LOOP button
#ª NON-STOP button
$º DISC 1 button
$¡ DISC 2 button
$™ DISC 3 button
$£ DISC 4 button
$¢ DISC 5 button
$∞ DECK A 6EJECT button
$§ DIRECTION button
$¶ DOLBY NR button
$• DECK A p(stop) button
$ª DECK A 0(backward) button
%º DECK A )(forward) button
%¡ DECK A ª(play) button
%™ DECK A ·(play) button
%£ PHONES jack
%¢ MIC jack
%∞ MIC LEVEL knob
%§ SLEEP button
%¶ DAILY 1 button
%• DAILY 2 button
%ª t/ CLOCK SET button
^º REC button
^¡ WAVE button
^™ SURROUND button
^£ P FILE MEMORY button
^¢ GEQ CONTROL button
^∞ ENTER button
^§ KARAOKE PON/MPX button
^¶ PLAY MODE button
^• REPEAT button
^ª EDIT button
&º 1/ALL DISCS button

— 6 —
– BACK PANEL –
⁄‚⁄
⁄‚‡
⁄‚fl
⁄‚fi
⁄‚›
⁄‚¤
⁄‚‹
IN
OUT XB33/XB44/XB50/XB60 MODEL
⁄‚⁄ ANTENNA terminal
⁄‚¤ VOLTAGE SELECTOR switch (E, AR model)
⁄‚‹ SPEAKER terminal
⁄‚› SURROUND SPEAKER terminal (D790/XB33/XB50/XB60 model)
⁄‚fi VIDEO/MD (AUDIO) jack
⁄‚fl PHONO jack
⁄‚‡ CD DIGITAL OUT connector (XB33/XB44/XB50/XB60 model)

— 7 —
Thissection is extracted
frominstruction manual.

— 8 —
SECTION 2
DISASSEMBLY
•This set can be disassembled in the order shown below.
2-1. UPPER CASE
Note: Follow the disassembly procedure in the numerical order given.
MAIN BOARD
(Page 9)
CD LID ASSY
SECTION
(Page 12)
TAPE MECHANISM
DECK SECTION
(Page 11)
MAIN
SECTION
(Page 10)
AUDIO BOARD
(Page 15)
CASSETTE
LID ASSY
(Page 11)
CD MECHANISM
DECK SECTION
(Page 10)
DISC TABLE
(Page 13)
BASE UNIT
(Page 13) BD BOARD
(Page 14)
PANEL (A)/(B)
SUB ASSY
(Page 12)
CAPSTAN MOTOR
(Page 15)
OPTICAL
PICK-UP
(Page 14)
SLED
MOTOR
(Page 14)
FRONT PANEL
SECTION
(Page 9)
UPPER
CASE
(Page 8)
3 Upper case
1 Three screws
(case 3 point)
1 Three screws
(case 3 point)
2 Seven screws
(BVTT 3
× 6)

— 9 —
2-2. FRONT PANEL SECTION
2-3. MAIN BOARD 6
Back panel
5 Power cord
3 Connector
(CN901)
2 Connector
(CN203)
1 Two flat wires
(CN1,202)
7 Two screws
(BVTP 3
× 8)
4 Twelve screws
(BVTP 3
× 8)
Fan is for (XB44 only)
8 Connector
(CN101)
9 Connector
(CN105)
(XB44 only)
0 MAIN boar
d
IC201
1 Three flat wires
(CN102, 205, 206)
2 Four screws
(BVTP 3 x 8)
3 Front panel section

— 10 —
2-4. MAIN SECTION
2-5. CD MECHANISM DECK SECTION
1 Flat wire (CN202)
4 Main section
2 Connector
(CN203)
3 Screw
(BVTP 3
× 8
)
3 Two screws
(BVTP 3
× 8
)
3 Two screws
(BVTP 3
× 8)
3 Five screws
(BVTP 3
× 8)
4 CD mechanism
deck section
2 Flat wire and
lead wire
1 Open the clamp.

— 11 —
2-6. TAPE MECHANISM DECK SECTION
2-7. CASSETTE LID ASSY
5 Remove the tape mechanism
deck section to direction of the arrow
A .
4 Three screws
(BVTP 2.6
× 8)
3 Two flat wires
(CN601, 1001)
4 Three screws
(BVTP 2.6
× 8)
2 Open the
cassette lid.
1 Push the
two buttons.
A
2 Two screws
(BVTP 2.6
× 8
)
3 Two brackets
1 Two springs
4 Cassette lid assy

— 12 —
6 Four screws
(BVTP 2.6
× 8)
2 Four screws
(BVTP 2.6
× 8
)
5 Connector
(CN671)
4 Connector
(CN661)
1 Connector
(CN642)
7 CD lid assy
3 CD-B1 SW board
1 Connector
(CN612)
2 Four screws
(BVTP 2.6
× 8
)
6 Panel (B) sub assy
4 Panel (A) sub assy
5 Two claws
3 Two claws
2-8. CD LID ASSY SECTION
2-9. PANEL (A) / (B) SUB ASSY

— 13 —
3 Base unit
1 Yoke bracket
2 Boss
1 Screw
(BVTP 3
× 8)
1 Screw
(BVTP 3
× 8)
4 Disc tabl
e
3 Step screw
2 Bracket (BU)
A
A
2-10. BASE UNIT
2-11. DISCTABLE
Note:
When the disc table is installed, adjust the positions
of roller cam and mark zas shown in the figure,
then set to the groove of disc table.

— 14 —
1 Two screws
(PTPWH M2.6
× 6
)
1 Two screws
(PTPWH M2.6
× 6)
5 Screw
(BVTP 2.6
× 8)
2 Optical pick-up
section
3 Two springs
3 Two springs
4 Flat wire
(CN101)
7 BD board
Limit switch
6 Removal
the four solders.
2-12. BD BOARD
2-13. OPTICAL PICK-UP,SLED MOTOR
4 Two screw
s
(P 2 × 3)
5 Sled motor
2 Sled shaft
1 Claw
3 Optical pick-up

— 15 —
2 Two screws
(BTP 2.6
× 8)
5 Hang the
two belts.
4 Removal the capstan motor
to direction of the arrow.
1 Break the soldering of
motor lead.
3 Claw
2-14. AUDIO BOARD
2-15. CAPSTAN MOTOR
2 Two rivets
3 Break the soldering of tw
o
flexible flat cables.
1 Connector
(CN651)
4 Four screws
(BTP 2.6
× 4)
5 Audio board

— 16 —
SECTION 3
TEST MODE
[LED and Fluorescent IndicatorTube All Lit, Key Check
Mode]
Procedure:
1. Pressthree buttons GROOVE , ENTER/NEXT ,and DISC3
simultaneously.
2. LEDs and fluorescent indicator tube are all turned on.
Press DISC 2 button, and the key check mode is activated.
3. In the key check mode, the fluorescent indicator tube displays
“K 1 J0V0”. Each time a button is pressed, “K”value increases.
However, once a button is pressed, it is no longer taken into
account.
“J” Value increases like 1, 2, 3 ... if rotating JOG knob in “+”
direction,or it decreases like 0, 9, 8...if rotating in “–” direction.
“V” Value increases like 1, 2, 3 ... if rotating VOLUME knob
in “+” direction, or it decreases like 0, 9, 8 ... if rotating in “–”
direction.
4. To exit from this mode, press three buttons in the same manner
as step 1, or disconnect the power cord.
[MC 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 GROOVE , ENTER/NEXT , and
DISC 1 simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously,
and the set is reset.
[CD Delivery Mode]
•This mode moves the pickup to the position durable to vibration.
Use this mode when returning the set to the customer after repair.
Procedure:
1. Press POWER button to turn the set ON.
2. Press PLAY MODE button and POWER button simulta-
neously.
3. A message “LOCK” is displayed on the fluorescent indicator
tube, and the CD delivery mode is set.
[MC Hot Reset]
•This mode resets the set with the preset data kept stored in the
memory. The hot reset mode functions same as if the power cord
is plugged in and out.
Procedure:
1. Press three buttons GROOVE , ENTER/NEXT , and
DISC 2 simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously,
and the set is reset.
[Sled Servo Mode]
•This mode can run the CD sled motor freely. Use this mode, for
instance, when cleaning the pickup.
Procedure:
1. Select the function “CD”.
2. Press three buttons GROOVE , ENTER/NEXT , and
FLASH simultaneously.
3. The Sled Servo mode is selected, if “CD” is flashing on the
fluorescent indicator tube.
4. With the CD in stop status, press )button in CD section to
movethe pickup to outside track, or 0buttontoinside track.
5. To exit from this mode, perform as follows:
1) Move the pickup to the most inside track.
2) Press three buttons in the same manner as step 2.
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.
[Change-over of AMTuner Step between 9kHz and 10kHz]
•A step of AM channels can be changed over between 9kHz and
10kHz.
Procedure:
1. Press POWER button to turn the set ON.
2. Select the function “TUNER”, and press TUNER/BAND
button to select the BAND “AM”.
3. Press POWER button to turn the set OFF.
4. Press ENTER/NEXT and POWER buttons simultaneously,
and the display of fluorescent indicator tube changes to “AM
9k STEP” or “AM 10k STEP”, and thus the channel step is
changed over.

— 17 —
8. To exit from the aging mode, press POWER button to turn
the set OFF.
2-2. Operation duringAging Mode
In the aging mode, the program is executed in the following
sequence.
1. A tape on FWD side is played for one minute.
2. PAUSE STOP is made.
3. Recording is made for 3 minutes. (For the deck not having
the record function, the play is executed.)
4. FF is executed up to the end of tape.
5. A tape is reversed, and the tape on REV side is played for
one minute.
6. PAUSE STOP is made.
7. Recording is made for 3 minutes. (For the deck not having
the record function, the play is executed.)
8. FF is executed up to the end of tape.
9. Steps 1 through 8 are executed for the other deck.
10. Steps 1 through 9 are repeated unless an alarm occurred.
2-3. Deck Selection Sequence
•During the aging mode, decks are selected in the following
sequence:
Deck A (FWD) →Deck A (REV)
↑↓
Deck B (REV) ←Deck B (FWD)
[Aging Mode]
This mode can be used for operation check of CD section and tape
deck section.
•If an error occurred:
The aging operation stops.
•If no error occurs:
The aging operation continues repeatedly.
1. Aging Mode in CD Section
1-1. Operating Method of Aging Mode
1. Set discs in DISC 1 and DISC 3 trays.
2. Select the function “CD”.
3. Press three buttons GROOVE , ENTER/NEXT , and
DISC 5 simultaneously.
4. The aging mode is activated, if a roulette mark on the
fluorescent indicator tube is flashing.
5. In the aging mode, the aging is executed in a sequence given
in “1-2. Operation duringAging Mode”.
The aging continues unless an alarm occurred.
6. To exit from the aging mode, press POWER button to turn
the set OFF.
•If a button other than buttons in the CD section is pressed during
aging, the aging in the CD section is finished.
•To execute aging to the tape deck section successively, press ·
button in the deck A.
“AGING” is displayed on the fluorescent indicator tube. (For
theaging in tape deck, see “2.Aging Mode in TapeDeck Section”.
1-2. Operation during aging Mode
In the aging mode, the program is executed in the following
sequence.
1. The disc tray turns to select a disc. (For a disc selection
sequence, see Section 1-3.)
2. TOC of disc is read.
3. The pickup accesses to the last track.
4. Steps 1 through 3 are repeated.
1-3. Disc Selection Sequence
•During the aging mode, discs are selected in the following
sequence:
Disc 1 →Disc 3
↑↓
Disc 3 ←Disc 1
2. Aging Mode in Tape Deck Section
2-1. Operating Method of Aging Mode
1. Load a commercially available 10-minute tape into the decks
A and B respectively.
(If a 10-minute tape is not available, another tape may be
used but a cycle time will be longer.)
2. Select the function “TAPE”.
3. Rewind tapes in advance by pressing 0button
respectively on decksA and B.
4. Press three buttons GROOVE , ENTER/NEXT , and
DISC 5 simultaneously.
5. Press ·button on deckA. (This button triggers the aging
mode.)
6. The aging mode is activated if “AGING A” is displayed on
the fluorescent indicator tube.
7. In the aging mode, the aging is executed in a sequence given
in “2-2. Operation during Aging Mode”.
The aging continues unless an alarm occurred.

— 18 —
SECTION 4
MECHANICAL ADJUSTMENTS SECTION 5 ELECTRICAL ADJUSTMENTS
DECK SECTION
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab:
record/playback head pinch roller
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
•TapeTension Measurement
Mode Torque Meter Meter Reading
Forward CQ-102C 36 to 61g·cm
(0.50 – 0.84 oz·inch)
Forward CQ-102C 2 to 6g·cm
Back Tension (0.026 – 0.082 oz·inch)
Reverse CQ-102RC 36 to 61g·cm
(0.50 – 0.84 oz·inch)
Reverse CQ-102RC 2 to 6g·cm
Back Tension (0.026 – 0.082 oz·inch)
FF, REW CQ-201B 61 to 143g·cm
(0.85 – 1.98 oz·inch)
Mode Tension Meter Meter Reading
Forward CQ-403A more than 100g (3.52 oz)
Reverse CQ-403R more than 100g (3.52 oz)
0dB=0.775V
1. Demagnetize the record/playback head with a head
demagnetizer. (Do not bring the head demagnetizer close to
the erase head.)
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.
8. Set to test mode. (Press key switch same time GROOVE
ENTER/NEXT and DISC 4 button.)
•Test Tape
Tape Signal Used for
P-4-A100 10kHz, –10 dB AzimuthAdjustment
WS-48B 3kHz, 0dB Tape SpeedAdjustment
P-4-L300 315Hz, 0dB LevelAdjustment
Record/Playback Head Azimuth Adjustment
DECK A DECK B
Note: Perform this adjustments for both decks
Procedure:
1. Mode: Playback (FWD)
set
main board
CN207
Pin
1 (L-CH)
Pin
3 (R-CH)
main board
CN207
Pin
2
+
–
level meter
test tape
P-4-A100
(10KHz, –10dB)

— 19 —
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 (FWD)
4. Repeat steps 1 to 3 in playback (REV) mode.
5. After the adjustments, apply suitable locking compound to the
pats adjusted.
Adjustment Location: Record/Playback Head (DeckA and B)
and main board.
Tape Speed Adjustment DECK A
Notes: • 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
H. SPEED DUB button.
Procedure:
1. Turn the power switch on.
2. Press the GROOVE button, ENTER/NEXT button and
DISC 4 button simultaneously.
To exit from the test mode, press the POWER button.
Mode: Playback (FWD)
Deck A is RV311 (L-CH) and RV411 (R-CH), Deck B is RV301
(L-CH) and RV401 (R-CH) so that adjustment within adjustment
level as follows.
Adjustment Level:
CN207 PB level: 301.5 to 338.3 mV (–8.2 to –7.2 dB) level
difference between the channels: within ±0.5 dB
Adjustment Location: AUDIO and main boards
1. Insert the WS-48B into the deck A and the blank tape into the
deck B.
2. Press the REC button and ·button on the deck B. Then
the deck B is at recording mode.
3. Set the deck Ato playback mode.
4. Keep pressing the H. SPEED DUB button in playback mode.
Then at HIGH speed mode.
5. Adjust RV652 on the AUDIO board do that frequency counter
reads 6,000 ± 60 Hz.
6. Take off the H. SPEED DUB button.
Then at NORMAL speed mode.
7. Adjust RV651 on theAUDIO board so that frequency counter
reads 3,000 Hz.
8. Frequency difference between deck Aand deck B the beginning
of the tape should be within ± 1.5%.
Adjustment Location: AUDIO board
+ 30
– 10
Screw
position
L-CH
peak
within
1dB
output
level
L-CH
peak R-CH
peak
within
1dB
Screw
position
R-CH
peak
main
board
CN207
set
test tape
P-4-A100
(10kHz, –10dB)
pin
3
oscilloscop
e
L-CH
R-CH
VH
waveform of oscilloscope
in phase 45 ° 90 ° 135 ° 180 °
good
wrong
pin 2
pin 1
L
R
reverse
forward
+
–
set
test tape
WS-48B
(3 kHz, 0 dB)
main board
CN207 (Pin
1 : L-CH)
(Pin
3 :R-CH)
frequency counter
+
–
set
test tape
P-4-L300
(315 Hz, 0 dB)
main board
CN207 (Pin
1 : L-CH)
(Pin
3 : R-CH)
level meter
SampleValue of Wow and flutter
W.RMS (JIS) within 0.3%
(test tape: WS-48B)
Playback level Adjustment DECK A DECK B
Procedure:
Mode: Playback (FWD)

— 20 —
Record Bias Current Adjustment DECK B
Procedure:
1. Mode: record
2. Mode: Playback
Confirm playbackthat thesignal recordedin step1 becomes adjustable
limits as follows.
If these levels are not adjustable limits, adjust theRV341 (L-CH) and
RV441 (R-CH) on theAUDIO board to repeat steps 1 and 2.
Adjustable limits: Playback output of 315 Hz to playback output
of 10kHz: 0±0.5 dB
Adjustment Location: AUDIO and main boards
Record Level Adjustment DECK B
Procedure:
1. Mode: record
2. Mode: Playback
Confirm playback that the signal recorded in step 1 becomes
adjustable limits as follows.
If these levels are not adjustable limits, adjust the RV1501 (L-CH)
and RV1551 (R-CH) on the main board to repeat steps 1 and 2.
Adjustable limits:
CN207 PB level: 47.3 to 53.1 mV (–24.3 to –23.3 dB)
Adjustment Location: main board
[MAIN BOARD] (Component Side)
[AUDIO BOARD] (Conductor Side)
attenuator
set
Pin 6 (L-CH) of IC1501 on the main board.
Pin
#¶ (L-CH) of IC1501 on the main board.
1) 315 Hz
2) 10 kHz 50 mV (–23.8 dB)



Pin 2 (GND) of ICN207 on the main board.
600
Ω
blank tape
CN-123
AF OSC
+
–
set
recorded
portion
CN207 (Pin
1 : L-CH)
(Pin
3 : R-CH)
level mete
r
set
Pin 6 (L-CH) of IC1501 on the main board.
Pin
#¶ (R-CH) of IC1501 on the main board.
315 Hz, 50 mV (–23.8 dB) blank tape
CS-123
Pin
2 (GND) of CN207 on the main board.
600 Ω
attenuator
AF OSC
+
–
set
recorded
portion
CN207 (Pin
1 : L-CH)
(Pin
3 : R-CH)
level mete
r
RV1501
IC1501 CN205
CN207
RV1551
RECORD LEVEL
IC301
IC201
RECORD
BAIS TAPE SPEED
(NORMAL)
RV651
®
(HIGH)
RV652
®
RV311
L
®
RV411
R
®
PB
LEVEL
RV441RV341
RV301
® L
RV401
® R
RL
– DECK B –
– DECK A –
    
PB LEVEL
    





          