Sony HCDXB-60 Service manual

HCD-D390/D790/G5500/

MICROFILM

XB33/XB44/XB50/XB60

SERVICE MANUAL

• HCD-D390/D790/G5500/XB33/XB44/

XB50/XB60 is the tuner, deck, CD and
amplifier section in LBT-D390/D790/G5500/

XB33/XB44/XB50/XB60

*Dolby noise reduction manufactured under license

from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol a are
trademarks of the Dolby Laboratories Licensing
Corporation.

.

Photo: HCD-XB44

CD
Section

Tape Deck
Section

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

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

SPECIFICATIONS

For the U.S. model

AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND 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

— Continued on next page —

COMPACT DISC DECK RECEIVER

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 DIGITAL OUT
(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)
North American 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)
North American 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
North American model: 120 V AC, 60 Hz
European model: 230 V AC, 50/60 Hz
Mexican model: 120 V AC, 50/60 Hz
Australian and South African models:

220 – 240 V AC, 50/60 Hz
Thailand model:: 220 – 240 V AC, 50/60 Hz
Other models: 110 – 120 V or 220 – 240 V

AC, 50/60 Hz Adjustable 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

1

/4 in) incl. projecting parts and controls

3

/4 x 17

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)

Size AA (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 —

CAUTION

Use of controls or adjustments or performance of procedures
other than those specified herein may 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.

SAFETY CHECK-OUT

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 for AC leakage. Check leakage as
described below.

LEAKAGE TEST

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. A commercial leakage tester, such as the Simpson 229 or RCA
WT -540A. Follow the manufacturers’ instructions to use these
instruments.

Laser component in this product is capable
of emitting radiation exceeding the limit for
Class 1.

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.

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-operated AC 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)

T o Exposed Metal

Parts on Set

AC

0.15

µ

F

Fig. A. Using an A C v oltmeter to check A C leakage.

1.5 k

Ω

Earth Ground

Voltmeter
(0.75 V)

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH
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 SCHÉMA TIQUES 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 —

TABLE OF CONTENTS

1. GENERAL

– FRONT PANEL – ···························································· 5
– BACK P ANEL – ······························································ 6

2. DISASSEMBL Y ····························································· 8

3. TEST MODE ··································································· 16

4. MECHANICAL ADJUSTMENTS ···························· 18

SERVICING NOTES

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.

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

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 pick­up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.

MODEL IDENTIFICATION

– BACK PANEL –

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 4-996-41 1-1π
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

— 4 —

– FRONT PANEL –

SECTION 1

GENERAL

$¢

%ª ^º

%¶ %•

%§

%¢ %∞

%£

%¡ %™

$ª$• %º

$§

$¶

$∞

$£

$™
$¡
$º

123 4 67

A

see A

see B

5

B

89

!º !¡

!£ !¢

!™

!∞

!§

!¶

!•

!ª @º

@¡ @™ @£

@¢ @∞

@§ @¶

@ª #º

#¡ #™ #£

@•

A

1 POWER button
2 DISPLAY/DEMO button
3 SPECTRUM ANAL YZER button
4 ENTER/NEXT button
5 TUNER MEMORY button
6 TUNING MODE button
7 TUNER/BAND button
8 TUNING – button
9 TUNING + 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 r REC button
@§ H SPEED DUB button
@¶ CD SYNC button
@• DECK B 6 EJECT button
@ª CD 6 OPEN 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 6 EJECT button
$§ DIRECTION button
$¶ DOLBY NR button

#¢

#∞#§#• #¶#ª

&º ^¶

B

^ª

^•

$• 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

— 5 —

– 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)

— 6 —

This section is extracted
from instruction manual.

— 7 —

• This set can be disassembled in the order shown below.

SECTION 2

DISASSEMBLY

UPPER
CASE
(Page 8)

FRONT PANEL
SECTION
(Page 9)

MAIN
SECTION
(Page 10)

TAPE MECHANISM
DECK SECTION
(Page 11)

CD LID ASSY
SECTION
(Page 12)

MAIN BOARD
(Page 9)

Note: Follow the disassembly procedure in the numerical order given.

2-1. UPPER CASE

CD MECHANISM
DECK SECTION
(Page 10)

PANEL (A)/(B)
SUB ASSY
(Page 12)

AUDIO BOARD
(Page 15)

CASSETTE
LID ASSY
(Page 11)

BASE UNIT
(Page 13)

DISC TABLE
(Page 13)

BD BOARD
(Page 14)

CAPSTAN MOTOR
(Page 15)

OPTICAL
PICK-UP
(Page 14)

SLED
MOTOR
(Page 14)

1

Three screws

(case 3 point)

3

Upper case

1

Three screws

(case 3 point)

— 8 —

2

Seven screws

(BVTT 3

×

6)

2-2. FRONT PANEL SECTION

d

3

Front panel section

1

Three flat wires

(CN102, 205, 206)

2

Four screws

(BVTP 3 x 8)

2-3. MAIN BOARD

3

Connector

(CN901)

5

Power cord

1

Two flat wires

(CN1,202)

6

Back panel

4

Twelve screws

×

(BVTP 3

Fan is for (XB44 only)

IC201

8

(CN101)

8)

0

MAIN boar

9

Connector
(CN105)
(XB44 only)

Connector

2

Connector

(CN203)

— 9 —

7

Two screws

(BVTP 3

×

8)

2-4. MAIN SECTION

)

)

3

Two screws

(BVTP 3

2

Connector

(CN203)

×

8)

1

Flat wire (CN202)

4

Main section

3

Screw

(BVTP 3

3

Two screws

(BVTP 3

×

8

×

8

2-5. CD MECHANISM DECK SECTION

3

Five screws

(BVTP 3

4

CD mechanism

deck section

×

8)

2

Flat wire and

lead wire

— 10 —

1

Open the clamp.

2-6. TAPE MECHANISM DECK SECTION

)

4

Three screws

(BVTP 2.6

3

Two flat wires

(CN601, 1001)

×

8)

A

4

Three screws

(BVTP 2.6

×

8)

5

Remove the tape mechanism

deck section to direction of the arrow

2

Open the

cassette lid.

A

.

2-7. CASSETTE LID ASSY

1

Two springs

1

Push the

two buttons.

3

Two brackets

2

Two screws

(BVTP 2.6

×

8

4

Cassette lid assy

— 11 —

)

)

2-8. CD LID ASSY SECTION

5

Connector

(CN671)

6

Four screws

(BVTP 2.6

×

8)

7

CD lid assy

4

Connector

(CN661)

2

Four screws

(BVTP 2.6

×

8

2-9. PANEL (A) / (B) SUB ASSY

3

Two claws

1

Connector

(CN642)

3

CD-B1 SW board

1

Connector

(CN612)

2

Four screws

(BVTP 2.6

×

8

4

Panel (A) sub assy

5

Two claws

6

Panel (B) sub assy

— 12 —

e

2-10. BASE UNIT

2

Boss

3

Base unit

1

Yoke bracket

2-11. DISC T ABLE

Note:

When the disc table is installed, adjust the positions
of roller cam and mark z as shown in the figure,
then set to the groove of disc table.

A

1

Screw

(BVTP 3

2

Bracket (BU)

×

8)

1

Screw

(BVTP 3

3

Step screw

×

8)

4

Disc tabl

— 13 —

A

)

2-12. BD BOARD

s

6

the four solders.

5

Screw

(BVTP 2.6

Removal

1

Two screws

(PTPWH M2.6

3

Two springs

×

8)

×

6)

1

Two screws

(PTPWH M2.6

2

Optical pick-up

section

3

Two springs

4

Flat wire

(CN101)

7

BD board

×

6

2-13. OPTICAL PICK-UP, SLED MOTOR

3

Optical pick-up

Limit switch

4

Two screw

(P 2 × 3)

2

Sled shaft

1

Claw

— 14 —

5

Sled motor

2-14. AUDIO BOARD

o

4

Four screws

(BTP 2.6

5

Audio board

1

Connector

(CN651)

×

4)

2

Two rivets

3

Break the soldering of tw

flexible flat cables.

2-15. CAPSTAN MOTOR

1

Break the soldering of

motor lead.

4

Removal the capstan motor

to direction of the arrow.

3

Claw

2

Two screws

(BTP 2.6

×

8)

— 15 —

5

Hang the

two belts.

SECTION 3

TEST MODE

[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.

[LED and Fluorescent Indicator Tube All Lit, Key Check
Mode]

Procedure:

1. Press three buttons GROOVE , ENTER/NEXT , and DISC 3
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 J0 V0”. 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.

[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

move the pickup to outside track, or 0 button to inside 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 AM T uner 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.

— 16 —

[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 during Aging 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
the aging in tape deck, see “2. Aging Mode in T ape Deck Section”.

8. To exit from the aging mode, press POWER button to turn
the set OFF.

2-2. Operation during Aging 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)

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 0 button
respectively on decks A and B.

4. Press three buttons GROOVE , ENTER/NEXT , and

DISC 5 simultaneously.

5. Press · button on deck A. (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.

— 17 —

SECTION 4

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)

SECTION 5

MECHANICAL ADJUSTMENTS

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.

• Tor que Measurement

Mode Torque Meter Meter Reading

Forward CQ-102C
Forward

Back Tension (0.026 – 0.082 oz·inch)

Reverse CQ-102RC
Reverse

Back Tension (0.026 – 0.082 oz·inch)

FF, REW CQ-201B

CQ-102C

CQ-102RC

36 to 61g·cm

(0.50 – 0.84 oz·inch)

2 to 6g·cm

36 to 61g·cm

(0.50 – 0.84 oz·inch)

2 to 6g·cm

61 to 143g·cm

(0.85 – 1.98 oz·inch)

ELECTRICAL ADJUSTMENTS

DECK SECTION

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 R­CH.

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 Azimuth Adjustment
WS-48B 3kHz, 0dB Tape Speed Adjustment
P-4-L300 315Hz, 0dB Level Adjustment

0dB=0.775V

• Tape T ension Measurement

Mode Tension Meter Meter Reading

Forward CQ-403A more than 100g (3.52 oz)
Reverse CQ-403R more than 100g (3.52 oz)

Record/Playback Head Azimuth Adjustment

DECK A DECK B

Note: Perform this adjustments for both decks

Procedure:

1. Mode: Playback (FWD)

— 18 —

2. Turn the adjustment screw and check output peaks. If the peaks

e

+
–

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

do not match for L-CH and R-CH, turn the adjustment screw

so

that outputs match within 1dB of peak.

output
level

within
1dB

L-CH
peak

R-CH
peak

within
1dB

Screw
position

L-CH
peak

Screw
position

R-CH
peak

3. Mode: Playback (FWD)

test tape
P-4-A100
(10kHz, –10dB)

L-CH

main
board
CN207
set

R-CH

in phase 45°90°135°180

pin

1

pin

2

L
R

pin

3

waveform of oscilloscope

good

oscilloscop

V

wrong

H

°

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 (Deck A 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)

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 A to 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 the AUDIO board so that frequency counter

reads 3,000 Hz.

+ 30
– 10

8. Frequency difference between deck A and deck B the beginning

of the tape should be within ± 1.5%.

Adjustment Location: AUDIO board

Sample Value of Wow and flutter

W.RMS (JIS) within 0.3%
(test tape: WS-48B)

forward

Playback level Adjustment DECK A DECK B

Procedure:

Mode: Playback (FWD)

reverse

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

— 19 —

Record Bias Current Adjustment DECK B

r

r

Procedure:

1. Mode: record

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

AF OSC

attenuator

Pin 2 (GND) of ICN207 on the main board.



50 mV (–23.8 dB)




Ω

600

set

2. Mode: Playback

recorded
portion

level mete

blank tape
CN-123

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)

RV1501

IC1501

RV1551

IC201

CN207

IC301

RECORD LEVEL

CN205

1
3

+
–

: L-CH)
: R-CH)

set

CN207 (Pin

(Pin

Confirm playback that the signal recorded in step 1 becomes adjustable
limits as follows.
If these levels are not adjustable limits, adjust the RV341 (L-CH) and
RV441 (R-CH) on the AUDIO 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

Pin

6

(L-CH) of IC1501 on the main board.

Pin

#¶

(R-CH) of IC1501 on the main board.

AF OSC

315 Hz, 50 mV (–23.8 dB)

600

attenuator

Ω

blank tape
CS-123

set

[AUDIO BOARD] (Conductor Side)

RECORD

BAIS



L

RV301
RV401

PB LEVEL

R

®

L

RV441RV341

®

R



– DECK B –

TAPE SPEED

(NORMAL)

RV651

®

PB

LEVEL

– DECK A –



RV311





RV411



(HIGH)
RV652

®

L

®

®

R



Pin

2

(GND) of CN207 on the main board.

2. Mode: Playback

recorded
portion

set

CN207 (Pin

(Pin

level mete

1

: L-CH)

3

: R-CH)

+
–

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.

— 20 —

TUNER SECTION

\

Note 1: As a front-end (FE1) is difficult to repair if faulty, replace

0dB=1µV

it with new one.

Note 2: No adjustment is needed due to a tuner pack for except

AEP, UK, East European, CIS models.

AM Tuned Level Adjustment

Note: FM Tuned Level adjustment should be performed after this

AM Tuned Level Adjustment.

Setting:

Band: MW

loop antenna

AM RF SSG

loop antenna
(Supplied accessories)

set

30% amplitude
modulation by
400 Hz signal

Modulation: 999 kHz (at 9 kHz step)

1,050 kHz (at 10 kHz step)

60 cm

Field strength dB (

µ

V/m) =SSG output level dB (µV/m) –26 dB.

Procedure:

1. Set the output of SSG so that the input level of the set becomes
55 dB.

2. Tune the set to 999 kHz or 1,050 kHz.

3. Adjust RV41 to the point (moment) when the TUNED indicator
will change from going off to going on.

Adjustment Location: TCB board

FM Tuned Level Adjustment

Note: This adjustment should be performed after the AM Tuned

Level Adjustment.

Setting:

Band: FM

FM RF SSG

Ω

coaxial

75

set

Carrier frequency : 98 MHz
Modulation : AUDIO 1 kH, 75 kHz
deviation (100%)
Output level: 25db (at 75

Ω

open)

FM ANTENNA
terminal (TM1)

AM ANTENNA
terminal (TM1)

Adjustment Location: TCB board

[TCB BOARD] (Component Side)

TM1

RV41
AM Tuner Level

RV42

FM Tuned

Level

IC21

Procedure:

1. Supply a 25 dB 98 MHz signal from the ANTENNA terminal.

2. Tune the set to 98 MHz.

3. Adjust RV42 to the point (moment) when the TUNED indicator
will change from going off to going on.

— 21 —

FM Polar Adjustment (East European, CIS model only)

k

Connection 1:

FM RF SSG

75

Ω

coaxial

set

FM antenna
terminal (75

Carrier frequency: 69 MHz
Output level : 1 mV (60 dB
Modulation: AUDIO 1 kHz, 10 kHz deviation

Ω

)

µ

) (at 75 Ω open)

Connection 2:

Procedure:

1. Set the modulation of FM RF SSG to AUDIO 1 kHz, 10 kHz
deviation according to “Connection 1”.

2. Tune the set to 69 MHz.

3. Adjust the RV1702 so that the reading of frequency counter
connected to TP1702 (VCO) becomes within 31.25 kHz ± 0.05
kHz. (VCO adjustment)

4. Then record the reading of the level meter connected to TP1701.

5. Set the modulation of FM RF SSG to AUDIO 31.25 kHz, 10
kHz deviation according to “Connection 2”.

6. Tune the set to 69 MHz.

7. Set the CT1701 to be mechanical center.

8. Adjust the L1701 so that the reading of the level meter connected
to TP1701 (FILTER) becomes maximum. (SUB CARRIER
PEAK Adjustment)

9. Adjust the R V1701 so that the level at the moment becomes 14
dB higher value than the level recorded in step 4. (SUB CAR­RIER LEVEL Adjustment)

AF OSC

Audio 31.25 kHz

Carrier frequency: 69 MHz
Output level : 1 mV (60 dB
Modulation: AUDIO 31.25 kHz, 10 kHz deviation

FM RF SSG

Ω

coaxial

75

external
modulation
terminal

(EXTERNAL MODULATION)

FM antenna
terminal (75

µ

) (at 75 Ω open)

Adjustment Location: TCB board

[TCB BOARD] (Conductor Side)

Frequency counter

TP1701
(FILTER)

set

Ω

)

[TCB BOARD] (Component Side)

L1701

CT1701

RV1701
Sub Carrier
Level

Sub Carrier Pea

Level meter

TP1702
(VCO)

IC17

IC1701

RV1702
VCO

— 22 —

CD SECTION

V

+
–

BD board

TP (FEO)
TP (VC)

oscilloscope

+
–

BD board

TP (RF)
TP (VC)

oscilloscope

VOLT/DIV: 200 mV
TIME/DIV: 500 ns

level:

1.3

±

0.3Vp-p

Note:

1. CD Block is basically designed to operate without adjustment.
Therefore, check each item in order given.

2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.

3. Use an oscilloscope with more than 10MΩ impedance.

4. Clean the object lens by an applicator with neutral detergent when the
signal level is low than specified value with the following checks.

5. Adjust the focus bias adjustment when optical block is replaced.

Focus Bias check

oscilloscope

(DC range)

BD board

TP (RF)

VC

Procedure:

1. Connect oscilloscope to test point TP (RF). (GND terminal :

VC)

2. Turned Power switch on.

3. Put disc (YEDS-18) in and playback.

4. Confirm that the shape “

≈” can be clearly distinguished at the

center of the waveform and check the RF signal level.

+
–

S Curve Check

Procedure:

1. Connect oscilloscope to test point TP (FEO).

2. Connect between test point TP (FOK) and GND by lead wire.

3. Turn Power switch on.

4. Put disc (YEDS-18) in and turned Power switch on again and
actuate the focus search. (actuate the focus search when disc
table is moving in and out.)

5. Check the oscilloscope waveform (S-curve) is symmetrical
between A and B. And confirm peak to peak level within 3±1
Vp-p.

S-curve wavef orm

symmetry

A

B

within 3

±

1 Vp-p

• RF signal

VOLT/DIV: 200 m
TIME/DIV: 500 ns

level:

1.3

±

0.3Vp-p

6. After check, remove the lead wire connected in step 2.

Notes: • 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 test point TP (RF) on BD board.

2. Turned Power switch on.

3. Put disc (YEDS-18) in and playback.

4. Confirm that oscilloscope waveform is clear and check RF signal
level is correct or not.

Note: Clear RF signal waveform means that the shape “≈” can be

clearly distinguished at the center of the waveform.

• RF signal

— 23 —

E-F Balance (1 Track Jump) check

)

(Without remote commander)

oscilloscope

BD board
TP (TEO)

TP (VC)

+
–

Procedure:

1. Connect oscilloscope to test point TP (TEO) on BD board.

2. Turned Power switch on.

3. Put disc (YEDS-18) in to play the number five track.

4. Press the “P (Pause)” button. (Becomes the 1 track jump mode)

5. Check the level B of the oscilloscope's waveform and the A
(DC voltage) of the center of the Traverse waveform.
Confirm the following:

A – B

2 (A + B)

× 100 = ±7 (%)

Adjustment Location:

[BD BOARD] (Conductor Side)

TP
(RF)

TP
(FOK)

CNU101

TP
(GND)

IC103

IC101

TP (TEO)

TP (FEO)

TP
(VC)

IC
I02

1 track jump waveform

0V

level : 500 mV

±

100 mVp-p

Center of the waveform

B

A (DC voltage

symmetry

CNU102

— 24 —

SECTION 6

d

M

M

M

1

3
7

9

61
60

62

76

77

IC201

MOTOR

DRIVE

Q201

SWITCH

IC202

DISC TABLE

SENSOR

M201

TABLE MOTOR

S201

UP SWITCH

12

.

11

14

.

13

7891012

11

100

21

27

75

17

16

15

14
13
23

29

44

89 90

86

93

71

6
7

20
19

13

12

21

22

33

23

24
25

26

27

36

37

38

39

41
42

1

2

4

5

6

10

9

18
17

16

15

26

27

3

6

16

14

OPTICAL PICK-UP BLOCK

DETECTOR K

B+

E

A

B

D

C

F

A

D

C

B

LASER
DIODE

TRACKING

COIL

FOCUS

COIL

2-AXIS
DEVICE

SLED / SPINDLE

MOTOR DRIVE

IC102 (2 / 2)

M102

SLED MOTOR

M101

SPINDLE MOTOR

SLED MOTOR

DRIVE

SPINDLE MOTOR

DRIVE

SLO SL-P

SLED

SERVO

IC101 (2 / 2)

F+

F-

T+

T-

FOCUS

COIL DRIVE

TRACKING

COIL DRIVE

FOCUS / TRAKING

COIL DRIVE

IC102 (1 / 2 )

MUTE

Q101

LD DRIVE

PD1

PD2

F
E

LD

PD

XRST

SENS2

TA-O

TA-M

FE-M

FE-O

LOCK

CLK

XLT

DATA

FOK

SENS1

C,OUT

RFO

73

S101

LIMIT SWITCH

R-CH

LOUT1

LOUT2

IC391

CD DIGITAL OUT

D OUT

RF
CNIN

SEIN
FOK
DATAO
XLTO
CLKO
LOCK

IC103

DIGITAL SIGNAL

PROCESSOR

SPOD

MDP

SCOR

XRST

CLOCK

XLAT

DATA

SENS

SQSQ

SQCK

185748

58

47

74

34

36

MAIN
SECTION

MAIN
SECTION

MAIN

SECTION

C

D

E

• R CH:Same as L CH

• SIGNAL PATH

:CD

IC101(1/2)

FOCUS/TRACKING

/SLED/SERVO

RF AMP

X101

16.9344MHz

(page 31)

(page 32)

(page 32)

XB33/XB44/XB50/XB60

DIAGRAMS

HCD-D390/D790/G5500/XB33/XB44/XB50/XB60

6-1. CIRCUIT BOARD LOCA TION

PANEL board

HEADPHONE-MIC
board

TC-A SW
board

LED board

CD-A SW board

DOOR SW board

CD MOTOR board

TRANS board

CD-B2 SW board

CD-B1 SW board

TCB board

TC-B SW board

MOTOR board

MAIN board

POWER AMP
board

LEAF SWITCH
board

6-2. BLOCK DIAGRAMS – CD SECTION –

TABLE SENSOR board

— 25 — — 26 —

BD LED board

BD board

AUDIO boar

HCD-D390/D790/G5500/XB33/XB44/XB50/XB60

– TUNER SECTION – (AEP, UK model)

ST +10V

TM1

ANTENNA

FM 75Ω

COAXIAL

AM

ANT IN

VT

Q5

FE1

FM FRONT END

IF OUT

Q13
MW
SW

6

5

3

2

26 25 24 23 22 21

Q14

LW SW

CF1

10.7MHz

FE2

MW/LW FRONTEND

Q12
MW
SW

28

29

26

27

10.7MHz

REG

AM OSC

FM AFC

AM RF IN

FM SD

OSC.BUFF

30 14

CF3

ADJ

VCO STOP

AM/FM

15

13

AM MIX

MUTE

IF BUFF

1 FM IN

FM/AM MPX

IC41

2

AM

12

SD

ADJ

AM

10

SD

D41

RV41

X42

450kHz

AM IF

AM

TUNED

LEVEL

IFT41

X41

10.7MHz

4

9

FM DET OUT

AM IF

FM

DET

23 22

AM

24

DET
OUT

STEREO

7
6

TUNED

70
69

72

OUT L

MPX IN

OUT R

IC1751

ST L

RDS INT
RDS DATA

STEREO
TUNED

MUTE

4

A

57

21

LPF

RCH

20

RDS DECODER

IC1752

13 14

X1751

4.332MHz

MAIN SECTION

F

B

19

AMP IN L

2

16

(Page 31)

MAIN SECTION

MAIN SECTION

AMP

17

OUT

L

(Page 32)

(Page 32)

CF2

IF AMP

Q1, 2

20

10.7MHz

12

13

14
15

16

17

LW SW

Q11
MW
SW

IF AMP

Q3, 4

Q9

RV42

FM

TUNED

LEVEL

X21

2

AM OSC

7

FM

1214

FM/AM IF

VCO STOP

1710

9

FM

VT1

MW

16

PLL

IC21

11

MW

1 24

XIN

XOUT

4.5MHz

3 ST-CE

CE

4

DI

5

CL
DO

6

68
67

65
66

COM-DIN
COM-CLK

COM-DATA

• R CH: Same as L ch

• SIGNAL PATH
: FM
: AM

— 27 — — 28 —

– TUNER SECTION – (East European, CIS model)

ST +10V

HCD-D390/D790/G5500/XB33/XB44/XB50/XB60

TM1

ANTENNA

FM 75Ω

COAXIAL

AM

ANT IN

Q5

VT

FE1

FM FRONT END

IF OUT

LW SW

Q13
MW
SW

6

5

3

2

26 25 24 23 22 21

Q14

CF1

10.7MHz

FE2

MW/LW FRONTEND

Q12
MW
SW

CF3

IF AMP

Q1-4

20

10.7MHz

12

13

14
15

16

17

LW SW

Q11
MW
SW

20
21

R CH

VCO

ST IND

910

RCH

STOP

POLAR/PILOT

12

LIN

13

POLA LIN

SWITCH

IC1702

CA
9 11

SWITCH

Q1702

L OUT

R OUT

D1701
D1702

14

4

SWITCH

Q1703

R CH

D1703

LPF 19

SWITCH

Q1701

70
69
72

AMP

IN
L

AMP
OUT

L

17

ST-L

STEREO
TUNED
MUTE

A

MAIN

SECTION

(Page 31)

L OUT

R OUT

MON

VCO

OUT R
OUT L

7

6

VCO

RV1702

MPX IN

1 FM IN

FM/AM MPX

IC41

28

REG

Q9

AM IF

2

RV42

FM
TUNED
LEVEL

29

26

27

AM OSC

FM AFC

AM RF IN

FM SD

ADJ

OSC.BUFF
30 14

AM/FM

15

AM MIX

MUTE

IF BUFF

VCO STOP

13

AM

SD

ADJ

AM
SD

D41

12

10

RV41

X42

450kHz

IFT41

AM

TUNED

LEVEL

X41

10.7MHz

AM IF

4

FM

9

DET

FM DET OUT

23

AM

24

DET
OUT

STEREO

TUNED

D42 D43

7
6

22

SUB CARRIER

PEAK

L1701CT1701

RV1701

SUB CARRIER

LEVEL

TP1701

POLAR

DECODER

IC1701

2

IN

3

POUT

SUB IN

20

18 17

TP1702

X21

2

AM OSC

7

FM

1214

8

IF REQ

FM/AM IF

VCO STOP

1710

9

FM

VT1

MW

16

PLL

IC21

11

MW

1 24

XIN

4.5MHz

XOUT

13

FM LOW

3

CE

4

DI

5

CL

6

DO

D1704

B

68
67
65
66

ST-CE
COM-DIN
COM-CLK
COM-DATA

MAIN

SECTION

(Page 32)

• R CH: Same as L ch

• SIGNAL PATH
: FM
: AM

— 29 —

— 30 —