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HCD-D390 - Compact Audio And Video
System Service Manual
88 pgs9.63 Mb0

Sony HCD-D390 - Compact Audio And Video, HCD-D790, HCD-G5500, HCD-XB33, HCD-XB44 System Service Manual

...
HCD-D390/D790/G5500/
XB33/XB44/XB50/XB60
SERVICE MANUAL
COMPACT DISC DECK RECEIVER
MICROFILM
Model Name Using Similar Mechanism HCD-D290/
• 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
.
— 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 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
*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.
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 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
3
/4 x 17
1
/4 in) 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) 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 —
— 3 —
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.
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)
SAFETY CHECK-OUT
T o Exposed Metal
Parts on Set
0.15
µ
F
1.5 k
Ω
AC Voltmeter (0.75 V)
Earth Ground
Fig. A. Using an A C v oltmeter to check A C 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 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-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.
— 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 pick­up 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 P ANEL – ······························································ 6
2. DISASSEMBL Y ····························································· 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
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A
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A
see A
1 POWER button 2 DISPLAY/DEMO button 3 SPECTRUM ANALYZER 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
$• 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 —
– BA CK 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 —
This section is extracted from instruction 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. 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.
— 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 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.
[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
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.
— 17 —
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)
[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. T o 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”.
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.
— 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.
• Tor que Measurement
• Tape T ension 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 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
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 (Deck A and B)
and main board.
Tape Speed Adjustment DECK A
Notes: • Start the T ape 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 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.
8. Frequency difference between deck A and 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
V
H
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
Sample Value 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 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
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
R
L
– DECK B –
– DECK A –

PB LEVEL


— 21 —
TUNER SECTION
0dB=1µV
Note 1: As a front-end (FE1) is difficult to repair if faulty, replace
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
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
AM RF SSG
loop antenna
set
loop antenna (Supplied accessories)
60 cm
AM ANTENNA terminal (TM1)
30% amplitude modulation by 400 Hz signal
\
Modulation: 999 kHz (at 9 kHz step)
1,050 kHz (at 10 kHz step)
Field strength dB (
µ
V/m) =SSG output level dB (µV/m) –26 dB.
Carrier frequency : 98 MHz Modulation : AUDIO 1 kH, 75 kHz deviation (100%) Output level: 25db (at 75
Ω
open)
FM ANTENNA terminal (TM1)
75
Ω
coaxial
set
FM RF SSG
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.
RV41 AM Tuner Level
TM1
RV42
FM Tuned
Level
IC21
Adjustment Location: TCB board
[TCB BOARD] (Component Side)
— 22 —
FM Polar Adjustment (East European, CIS model only)
Connection 1:
Carrier frequency: 69 MHz Output level : 1 mV (60 dB
µ
) (at 75 Ω open)
Modulation: AUDIO 1 kHz, 10 kHz deviation
FM antenna terminal (75
Ω
)
75
Ω
coaxial
set
FM RF SSG
Connection 2:
Carrier frequency: 69 MHz Output level : 1 mV (60 dB
µ
) (at 75 Ω open)
Modulation: AUDIO 31.25 kHz, 10 kHz deviation
(EXTERNAL MODULATION)
FM antenna terminal (75
Ω
)
75
Ω
coaxial
set
FM RF SSG
AF OSC
external modulation terminal
Audio 31.25 kHz
Adjustment Location: TCB board
[TCB BOARD] (Conductor Side)
IC17
Level meter
Frequency counter
TP1701 (FILTER)
TP1702 (VCO)
IC1701
RV1702 VCO
RV1701 Sub Carrier Level
L1701
CT1701
Sub Carrier Pea
k
[TCB BOARD] (Component Side)
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)
— 23 —
CD SECTION
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
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.
• RF signal
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 waveform
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
• RF signal
+ –
BD board
TP (RF)
VC
oscilloscope
(DC range)
VOLT/DIV: 200 m
V
TIME/DIV: 500 ns
level:
1.3
±
0.3Vp-p
+ –
BD board
TP (FEO) TP (VC)
oscilloscope
A
B
symmetry
within 3
±
1 Vp-p
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.
+ –
BD board
TP (RF) TP (VC)
oscilloscope
VOLT/DIV: 200 mV TIME/DIV: 500 ns
level:
1.3
±
0.3Vp-p
— 24 —
E-F Balance (1 Track Jump) check (Without remote commander)
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 (%)
+ –
BD board TP (TEO)
TP (VC)
oscilloscope
Center of the waveform
B
level : 500 mV
±
100 mVp-p
symmetry
A (DC voltage
)
0V
Adjustment Location:
IC103
CNU102
IC101
IC I02
TP (RF)
TP (FOK)
TP (VC)
TP (FEO)
TP (TEO)
TP (GND)
CNU101
1 track jump waveform
[BD BOARD] (Conductor Side)
HCD-D390/D790/G5500/XB33/XB44/XB50/XB60
SECTION 6 DIAGRAMS
6-1. CIRCUIT BOARD LOCATION
— 25 — — 26 —
6-2. BLOCK DIAGRAMS – CD SECTION –
TRANS board
PANEL board
HEADPHONE-MIC board
TC-A SW board
CD-A SW board
DOOR SW board
LED board
CD-B2 SW board
CD-B1 SW board
TC-B SW board
POWER AMP board
MAIN board
TCB board
MOTOR board
LEAF SWITCH board
BD board
AUDIO boar
d
BD LED board
CD MOTOR board
TABLE SENSOR board
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
HCD-D390/D790/G5500/XB33/XB44/XB50/XB60
— 27 — — 28 —
– TUNER SECTION – (AEP, UK model)
TM1
AM
ANTENNA
FM 75Ω
COAXIAL
ANT IN
ST +10V
Q5
VT
FE1
FM FRONT END
IF OUT
CF1
10.7MHz
IF AMP
Q1, 2
CF2
10.7MHz
IF AMP Q3, 4
CF3
10.7MHz 1 FM IN
REG
FM/AM MPX
IC41
1710
16
PLL IC21
11
FM TUNED LEVEL
15
13
30 14
RV42
2
1214
7
10
X42
450kHz
D41
FM SD
ADJ
OSC.BUFF
AM/FM
VCO STOP
IF BUFF
MUTE
AM SD
AM TUNED LEVEL
12
RV41
2
AM IF
IFT41
4
9
AM IF
DET
STEREO
TUNED
7 6
X41
10.7MHz
MUTE
STEREO TUNED
23 22
FM DET OUT
MPX IN
2120OUT L
OUT R
LPF RCH
19
AMP IN L
AMP OUT
L
17
ST L
4 5
3 ST-CE
COM-DIN COM-CLK COM-DATA
F
MAIN SECTION
CE
DI CL
DO
1 24
X21
4.5MHz
AM MIX
AM SD
6
28
5
2
15
17
16
14
12
13
29
26 25 24 23 22 21
20
9
LW SW
Q9
27
FE2
MW/LW FRONTEND
Q11 MW SW
Q12 MW SW
Q14
LW SW
Q13 MW SW
AM OSC
AM RF IN
FM AFC
RDS DATA
RDS INT
(Page 32)
6
FM
VT1
MW
MW
AM OSC
FM
VCO STOP
FM/AM IF
XIN
XOUT
3
4
13 14
2 16
IC1751
RDS DECODER
IC1752
X1751
4.332MHz
57
FM
ADJ
26
24
AM
DET
OUT
68 67 65 66
• R CH: Same as L ch
• SIGNAL PATH : FM : AM
70 69
72
A
MAIN SECTION
(Page 31)
B
MAIN SECTION
(Page 32)
HCD-D390/D790/G5500/XB33/XB44/XB50/XB60
— 29 —
— 30 —
– TUNER SECTION – (East European, CIS model)
22
MPX IN
21
OUT L
LPF 19
AMP
IN L
AMP OUT
L
17
4
5
3
6
ST-CE COM-DIN COM-CLK COM-DATA
B
MAIN
SECTION
CE DI CL
DO
• R CH: Same as L ch
• SIGNAL PATH : FM : AM
D42 D43
13
FM LOW
SUB CARRIER
PEAK
L1701CT1701
TP1701
2
3
20
RV1701
SUB CARRIER
LEVEL
7
6
910
POLAR
DECODER
IC1701
IN
POUT
L OUT
R OUT
SUB IN
MON
VCO
ST IND
VCO
STOP
18 17
R CH
13
12
POLAR/PILOT
SWITCH
IC1702
14
9 11
LIN
L OUT
CA
R OUT
4
R CH
SWITCH
Q1701
SWITCH
Q1702
SWITCH
Q1703
D1704
D1703
D1701 D1702
ST-L
STEREO TUNED
MUTE
TP1702
RV1702
VCO
(Page 32)
TM1
AM
ANTENNA
FM 75Ω
COAXIAL
ANT IN
ST +10V
Q5
VT
FE1
FM FRONT END
IF OUT
CF1
10.7MHz
IF AMP
Q1-4
CF3
10.7MHz 1 FM IN
REG
FM/AM MPX
IC41
1710
16
PLL IC21
11
FM
TUNED
LEVEL
15
13
30 14
RV42
2
1214
7
8
10
X42
450kHz
D41
AM/FM
VCO STOP
IF BUFF
MUTE
AM SD
AM TUNED LEVEL
12
RV41
2
AM IF IFT41
4
9
AM IF
FM DET
STEREO
TUNED
7 6
X41
10.7MHz
1 24
X21
4.5MHz
AM MIX
AM SD
6
28
5
2
15
17
16
14
12
13
29
26 25 24 23 22 21
20
9
LW SW
Q9
27
FE2
MW/LW FRONTEND
Q11 MW SW
Q12 MW SW
Q14
LW SW
Q13 MW SW
AM OSC
AM RF IN
FM
VT1
MW
MW
AM OSC
FM
VCO STOP
FM/AM IF
IF REQ
XIN
XOUT
3
A
MAIN
SECTION
(Page 31)
OUT R
RCH
20
ADJ
FM SD
ADJ
OSC.BUFF
FM AFC
26
23
FM DET OUT
24
AM DET OUT
70 69 72
68 67 65 66
POLA LIN
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