Sony HCDR-550 Service manual
HCD-GRX30/GRX30J/R550/RXD5
SERVICE MANUAL
HCD-GRX30/GRX30J/R550/RXD5 is
the Amplifier, CD pla yer, Tape Deck and
T uner section in MHC-GRX30/GRX30J/
R550/RXD5
Manufactured under license from Dolby Laboratories
Licensing Corporation.
“DOLBY” and the double-D symbol a are trademarks
of Dolby Laboratories Licensing Corporation.
Photo: HCD-GRX30
CD
Section
T APE
DECK
Section
US Model
Canadian Model
HCD-RXD5
AEP Model
UK Model
HCD-R550/RXD5
E Model
HCD-GRX30/GRX30J
Australian Model
HCD-GRX30
Tourist Model
HCD-GRX30J
Model Name Using Similar Mechanism HCD-GRX5/RX66
CD Mechanism Type CDM38LH-5BD32L
Base Unit Type BU-5BD32L
Optical Pick-up Type KSS-213D/Q-RP
Model Name Using Similar Mechanism HCD-GRX5
T ape Transport Mechanism Type TCM-230AWR2
AUDIO POWER SPECIFICATIONS:
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION
US model:
with 6 ohm loads both channels driven, from 70 20,000 Hz; rates 60 watts per channel minimum RMS
power, with no more than 0.9% total harmonic
distortion from 250 milliwatts to rated output.
Amplifier section
North American model:
Continuous RMS power output (reference)
60 + 60 W
(6 Ω at 1 kHz, 10% THD)
European model:
DIN power output (rated) 60 + 60 W
(6 Ω at 1 kHz, DIN)
Continuous RMS power output (reference)
80 + 80 W
(6 Ω at 1 kHz, 10% THD)
Music power output (reference)
140 + 140 W
(6 Ω at 1kHz, 10% THD)
SPECIFICATIONS
Other models:
The following measured at AC 110, 220 V 50/60 Hz
DIN power output (rated)60 + 60 W
(6 Ω at 1 kHz, DIN)
Continuous RMS power output (reference)
80 + 80 W
(6 Ω at 1 kHz, 10% THD)
The following measured at AC 120, 240 V 50/60 Hz
DIN power output (rated)70 + 70 W
(6 Ω at 1 kHz, DIN)
Continuous RMS power output (reference)
100 + 100 W
(6 Ω at 1 kHz, 10% THD)
Inputs
MD/VIDEO (AUDIO) IN:
(phono jacks) voltage 450 mV/250mV,
impedance 47 kΩ
MIX MIC: (phone jack) sensitivity 1 mV,
impedance 10 kΩ
Outputs
MD/VIDEO (AUTO) OUT:
(phono jack) voltage 250 mV
impedance 1 kΩ
PHONES: accepts headphones of 8 Ω
(stereo mini jack) or more
SPEAKER: accepts impedance of 6 to
16 Ω
MINI Hi-Fi COMPONENT SYSTEM
SUPER WOOFER
(except for European model):
Voltage 1V, impedance 1kΩ
CD player section
System Compact disc and digital audio
system
Laser Semiconductor laser (λ=780nm)
Emission duration: continuous
Laser output Max. 44.6 µW*
*This output is the value
measured at distance of 200 mm
from the objective lens surface on
the Optical Pick-up Block with 7
mm aperture.
Frequency response 2 Hz - 20 kHz (±0.5 dB)
Wavelength 780 -790 nm
Signal-to-noise ratio More than 85 dB
Dynamic range More than 85 dB
CD OPTICAL DIGITAL OUT
(Square optical connector jack, rear panel)
Wavelength 600 nm
Output Level –18 dBm
— Continued on next page —
MICROFILM
Tape player section
Recording system 4-track 2-channel stereo
Frequency response 40 - 13,000 Hz (±3 dB),
(DOLBY NR OFF) using Sony TYPE I cassette
40 - 14,000 Hz (±3 dB),
using Sony TYPE II cassette
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range 87.5 - 108.0 MHz
Antenna FM lead antenna
Antenna terminals 75 Ω unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
2 Band type:
North American models:530 - 1,710 kHz
(with the interval set at 10 kHz)
531 - 1,710 kHz
(with the interval set at 9 kHz)
European model: 531 – 1,602 kHz
(with the interval set at 9 kHz)
Other models: 531 - 1,602 kHz
(with the interval set at 9 kHz)
530 - 1,710 kHz
(with the interval set at 10 kHz)
3 Band type:
Middle Eastern model:
MW: 531 – 1,602 kHz
(with the interval set at 9 kHz)
SW: 5.95 – 17.90 MHz
(with the interval set at 5 kHz)
Other models:
MW: 531 – 1,602 kHz
(with the interval set at 9 kHz)
530 – 1,710 kHz
(with the interval set at 10 kHz)
SW: 5.95 – 1,790 kHz
(with the interval set at 5 kHz)
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz
General
Power requirements
North American model: 120 V AC, 60 Hz
European model: 230 V AC, 50/60Hz
Australian model: 230 – 240 V AC, 50/60 Hz
Mexican model: 120 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
Power consumption
U.S.A. model: 130 W
Canadian model: 110 W
East European model: 130W
Other models: 110 W
Dimensions (w/h/d) Approx. 280 × 340 × 380 mm
(11 × 133/8 × 15 in.)
Mass: Approx. 9.5 kg (21 lb.)
Supplied accessories: AM loop antenna (1)
Remote commander (1)
Batteries (2)
FM lead antenna (1)
Speaker cords (2) (for European model only)
Design and specifications are subject to change without notice.
— 2 —
TABLE OF CONTENTS
1. SERVICING NOTES ··················································· 3
2. GENERAL ······································································ 6
3. DISASSEMBLY
3-1. Case ···················································································· 8
3-2. Front Panel Section ····························································8
3-3. Tape Mechanism Deck Section (TCM-230AWR2) ············9
3-4. CD Mechanism Deck section (CDM38LH-5BD32L)········ 9
3-5. Main Board·······································································10
SECTION 1
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.
4. TEST MODE ································································ 11
5. MECHANICAL ADJUSTMENTS·························· 13
6. ELECTRICAL ADJUSTMENTS ···························13
7. DIAGRAMS
7-1. Circrit Boards Location ···················································· 18
7-2. Block Diagrams ································································19
• CD Section····································································· 19
• Tape Deck Section ·························································21
• Main Section·································································· 23
• Display/Key Con Section ·············································· 25
7-3. Printed Wiring Board – CD Section –······························29
7-4. Schematic Diagram –CD Section –··································31
7-5. Printed Wiring Board – CD Motor Section –···················33
7-6. Schematic Diagram – CD Motor Section –······················35
7-7. Printed Wirint Board – Tape Deck Section – ···················37
7-8. Schematic Diagram – Tape Deck Section – ····················· 39
7-9. Printed Wiring Board – Leaf SW Section – ····················· 41
7-10. Schematic Diagram – Leaf SW Section – ························ 42
7-11. Printed Wiring Board – Main Section – ··························· 43
7-12. Schematic Diagram – Main Section (1/4) – ·····················45
7-13. Schematic Diagram – Main Section (2/4) – ·····················47
7-14. Schematic Diagram – Main Section (3/4) – ·····················49
7-15. Schematic Diagram – Main Section (4/4) – ·····················51
7-16. Printed Wiring Board – Panel Section –··························· 53
7-17. Schematic Diagram – Panel Section – ····························· 55
7-18. Printed Wiring Board – AC Sec Standby Section –··········57
7-19. Schematic Diagram – AC Sec Standby Section – ············ 59
7-20. Printed Wiring Board – CD SW Section – ······················· 61
7-21. Schematic Diagram – CD SW Section – ·························· 61
7-22. IC Block Diagrams ··························································· 63
7-23. IC PIN Function Description ············································ 66
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.
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 the 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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
8. EXPLODED VIEWS
8-1. Case Section ····································································· 69
8-2. Front Panel Section ··························································70
8-3. Chassis Section·································································71
8-4. CD Mechanism Deck Section-1 (CDM38LH-5BD32L)·· 73
8-5. CD Mechanism Deck Section-2 (CDM38LH-5BD32L)·· 74
8-6. Base Unit Section (BU-5BD32L)····································· 75
8-7. Tape Mechanism Deck Section-1 (TCM-230AWR2) ······ 76
8-8. Tape Mechanism Deck Section-2 (TCM-230AWR2) ······ 77
9. ELECTRICAL PARTS LIST ···································78
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
The following caution label is located inside the unit.
— 3 —
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 A C leakage. Check leakage as
described below.
LEAKAGE
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. Follo w 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 v oltmeter . 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 e xamples 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 AC voltmeter to check AC leakage.
SAFETY-RELATED COMPONENT WARNING!!
1.5 k
Ω
Earth Ground
Voltmeter
(0.75 V)
MODEL IDENTIFICATION
– Back Panel –
PART No.
MODEL
GRX30: E2, E3, EA, AR, SP, TW models
GRX30J models
R550, RXD5: CIS models
RXD5: US, CND models
R550, RXD5: AEP, AED, UK, G models
GRX30: MX, TH, KR, AUS models
• Abbreviation
CND : Canadian model
AUS : Australian model
G : German model
AED : North European model
EA : Saudi Arabia model
E2 : Central and South America model
E3 : Middle and Near East model
MX : Mexican model
SP : Singapore model
TH : Thai model
TW : T aiw an model
AR : Argentina model
KR : Korea model
PART No.
4-214-432-0π
4-214-432-1π
4-214-432-2π
4-214-432-3π
4-214-432-6π
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
LES COMPOSANTS IDENTIFÉS P AR 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.
À LA SÉCURITÉ!
— 4 —
e
e
HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF.
1
Remove the Case.
3
Pull-out the disc tray.
2
Turn the cam to th
direction of arrow.
NOTE FOR INSTALLATION (ROTARY ENCODER)
BU cam
Groove
Note:When attaching the Base unit, Insert th
section A into the groove of BU cam.
Section A
Note:When attaching the BU cam,
engage the Rotary encoder
switch as shown in the figure.
— 5 —
@§
@∞
@¢
@£
@™
@¡
@º
!ª
!•
!¶
SECTION 2
GENERAL
12 3 45
!∞!§
6
7
8
9
!º
!¡
!™
!£
!¢
1 1/u (Power) button and indicator
2 DEMO/ (STANDBY)/POWER SAVE
(North American and European model) button
3 DISC 1 to 3 button and indicators
4 DISC SKIP/EX-CHANGE button
5 § (CD) button
6 CD disc tray
7 p button
8 CD, ^ button and indicator
9 TUNER/BAND button
!º CD NON-STOP button and indicator
!¡ KARAOKE PON/MPX button
!™ FILE SELECT button
!£ PHONES jack
!¢ § (deck B)
!∞ Tape deck B
!§ Tape deck A
!¶ § (deck A)
!• CD FLASH button
!ª CD LOOP button
@º MIX MIC jack
@¡ REPEAT, STEREO/MONO button
@™ PLAY MODE, DOLBY NR, PTY (European model)
button
@£ EDIT DIRECTION, TUNER MEMORY button
@¢ FUNCTION button
@∞ T APE A, 9 and ( buttons and indications
@§ TAPE B, 9 and ( buttons and indications
$¢
$£
$™
$¡
$º
#ª
#•
#¶
#§
@¶
@•
@ª
#º
#¡
#™
#£
#¢
#∞
@¶ Fluorescent indicator tube
@• ENTER/NEXT button and indicator
@ª DBFB button
#º SURROUND button
#¡ REC, PAUSE/START button and indicator
#™ HI-DUB button
#£ CD SYNC button
#¢ VOLUME knob
#∞ +, ) button and indicator
#§ JOG dial
#¶ –, 0 button and indicator
#• TIMER SELECT button and indicator
#ª CLOCK/TIMER SET button
$º MIC LEVEL knob
$¡ DISPLAY button
$™ SPECTRUM AN AL YZER button
$£ GROOVE button and indicator
$¢ Remote sensor
— 6 —
This section is extracted
from instruction manual.
— 7 —
SECTION 3
)
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
3-1. CASE
6
2
Screw
(CASE3 TP2) (3
3
T wo screws
(CASE3 TP2) (3
×
12)
×
8)
Case
1
Three screws
(BVTP3
×
10)
3-2. FRONT PANEL SECTION
4
Loading panel
4
5
1
Turn the cam to the direction
of arrow
A
.
4
2
Screw
(CASE3 TP2) (3
3
T wo screws
(CASE3 TP2) (3
×
12)
×
8
8
Screw
(BVTP3
2
Pull-out the
disc tray.
×
10)
3
Two claws
9
T wo screws
(BVTT3
A
5
Wire (flat type)
(15 core) (CN303)
8
Screw
(BVTP3
×
6)
×
10)
6
Wire (flat type) (19 core)
(CN501)
7
Wire (flat type)
(17 core) (CN304)
— 8 —
)
4
CD mechanism deck section
(CDM38LH-5BD32L)
3
T wo screws
(BVTP3
×
10)
1
T wo connectors
(CN392, CN393)
2
Wire (flat type)
(19 core) (CN391)
3-3. TAPE MECHANISM DECK SECTION (TCM-230AWR2)
2
Open the
cassette lids.
3
Three screws
(BVTP2.6
×
8)
4
T wo screws
5
T ape mechanism
deck section
(TCM-230AWR2)
(BVTP2.6
×
8
3-4. CD MECHANISM DECK SECTION (CDM38LH-5BD32L)
Note: The CD mechanism deck will
1
Push the
cassette lids.
fall if three screws are removed.
Support it by hand, then remove
three screws.
— 9 —
)
3-5. MAIN BOARD
1
Connector
(CN21)
5
Connector
(CN13)
3
Four screws
(BVTP3
×
10)
2
Wire (flat type) (15 core) (14 cm
(CN371)
6
MAIN board
4
T wo screws
(BVTP3
×
8)
— 10 —
SECTION 4
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 p , ENTER/NEXT , and 1/u simulta-
neously.
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 1/u button to turn the set ON.
2. Press LOOP button and 1/u button simultaneously.
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 r eset mode functions same as if the power
cord is plugged in and out.
Procedure:
1. Press three buttons p , ENTER/NEXT , and DISC 1
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. Press 1/u button to turn the set ON.
2. Select the function “CD”.
3. Press three buttons p , ENTER/NEXT , and § simulta-
neously.
4. The Sled Servo mode is selected, if “CD” is blanking on the
fluorescent indicator tube.
5. With the CD in stop status, press ) + button to move the
pickup to outside track, or – 0 button to inside track.
6. 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 Tuner Step between 9 kHz and
10 kHz]
• A step of AM channels can be changed over between 9 kHz and
10 kHz.
Procedure:
1. Press 1/u button to turn the set ON.
2. Select the function “TUNER”, and press TUNER/BAND
button to select the BAND “AM”.
3. Press 1/u button to turn the set OFF.
4. Press ENTER/NEXT and 1/u buttons simultaneously, and
the display of fluorescent indicator tube changes to “AM 9 k
STEP” or “ AM 10 k STEP”, and thus the channel step is changed
over.
[LED and Fluorescent Indicator Tube All Lit, Key Check
Mode]
Procedure:
1. Press three buttons p , ENTER/NEXT , and DISC 2
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.
— 11 —
[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 and display status.
• If no error occurs:
The aging operation continues repeatedly.
1. Operating method of Aging Mode
1) Set disc in DISC1 tray.
2) Load the tapes recording use into the decks A and B respecti vely .
3) Press three buttons p , ENTER/NEXT , and
DISC SKIP/EX-CHANGE simultaneously.
4) The aging mode is activa ted, if a CD roulette mark on the
fluorescent indicator tube is blinking.
5) To exit from the aging mode, press 1/u button to turn the set
OFF.
2. Operation sequence
• During the aging mode in the following sequence to below.
• Starting the CD section aging for function set “CD”, starting
the TAPE section (deck A) aging for function set “TAPE A” or
“TAPE B”. (Set another function is no work.)
CD (disc1) (12 minutes) → Deck A
↑↓(About 13 minutes
Deck B 20 seconds
maximum)
3. Aging Mode in CD section
1) Display state
• No error occurs
display
1 –
[*][*]
@ @
4. Aging Mode in Tape Deck section
1) Display state
• No error occurs
Display action now
• Error occurred
Display action last time
NO. Display action Action contents Final timing
1 TAPE A AG-1 Rewind the TAPE A The top of tape
2 TAPE A AG-2 FWD play the TAPE A 3 minutes playing
3 TAPE A AG-3 F.F. the TAPE A First either 20 minutes
or the end of tape
4 TAPE A AG-4 REV play the TAPE A 3 minutes playing
5 TAPE A AG-5 Rewind the TAPE A The top of tape
6 TAPE B AG-1 Rewind the TAPE B The top of tape
7 TAPE B AG-2 FWD play the TAPE B 3 minutes playing
8 TAPE B AG-3 F.F. the TAPE B First either 20 minutes
or the end of tape
9 TAPE B AG-4 REV play the TAPE B 3 minutes playing
10 TAPE B AG-5 Rewind the TAPE B The top of tape
2) Operation during aging mode
In the aging mode, the program is executed in the following
sequence.
(1) Rewind is executed up to the top of tape.
(2) A tape on FWD side is played for 3 minutes.
(3) FF is executed up to either made for 20 minutes or the end of
tape.
(4) A tape is reversed, and the tape on REV side is played for 3
minutes.
(5) Rewind is executed up to the top of tape.
(6) Steps 1 through 5 are executed for the other deck.
(7) Change to CD section aging.
Note:
: a letter “CD” and the remainder time (minute) alternately. (re-
[*][*]
mainder time start from 12 minute)
@@: track number in access.
• Error occurred
NO. Display Main factor
1 NO DISC ERR Not set disc in DISC1
2 FOCUS1 ERR Focus does not work
3 FOCUS2 ERR Focus does not work after the disc rotate as usual
4 GFS ERR GFS error
5 FBIAS ERR Error in to the focus bias adjustment
6 SENSOR ERR Disc sensor sens DISC1 is no disc
7 TABLE ERR CD tray lotate does not work
8 TRAY ERR Tray (include BD) move does not work
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 disc1.
(2) A disc is chucked.
(3) TOC of disc is read.
(4) The pickup accesses to the track 1, and playing 2 seconds.
(5) The pickup accesses to the last track, and playing 2 seconds.
(6) Steps 1 through 5 are repeated about 12 minutes.
(7) Change to deck section aging.
— 12 —
SECTION 5
r
MECHANICAL ADJUSTMENTS
SECTION 6
ELECTRICAL ADJUSTMENTS
Precaution
1. Clean the following parts with a denatured alcohol-moistened
swab:
record/playback heads pinch rollers
erase head rubber belts
capstan idlers
2. Demagnetize the record/playback head with a head
demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
Torque Measurement
Mode Torque meter
FWD
FWD
back tension
REV
REV
back tension
FF/REW
FWD tension
REV tension
CQ-102C
CQ-102C
CQ-102RC
CQ-102RC
CQ-201B
CQ-403A
CQ-403R
Meter reading
31 to 71 g • cm
(0.43 – 0.98 oz • inch)
2 to 6 g • cm
(0.02 – 0.08 oz • inch)
31 to 71 g • cm
(0.43 – 0.98 oz • inch)
2 to 6 g • cm
(0.02 – 0.08 oz • inch)
71 to 143 g • cm
(0.98 – 1.99 oz • inch)
100 g or more
(3.53 oz or more)
100 g or more
(3.53 oz or more)
DECK SECTION
1. Demagnetize the record/playback head with a head
demagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to the
parts adjust.
4. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
5. The adjustments should be performed in the order giv en 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.
• Test T ape
Tape Signal Used for
P-4-A100 10 kHz, –10 dB Azimuth Adjustment
WS-48B 3 kHz, 0 dB Tape Speed Adjustment
P-4-L300 315 Hz, 0 dB Level Adjustment
Record/Playback Head Azimuth Adjustment
0 dB=0.775 V
DECK A DECK B
Note: Perform this adjustments for both decks
Procedure:
1. Mode: Playback
test tape
P-4-A100
(10 kHz, –10 dB)
set
main board
CN301
Pin
3
(L-CH)
Pin
1
(R-CH)
main board
CN301
Pin
2
(GND)
level mete
+
–
— 13 —
2. Turn the adjustment screw and check output peaks. If the peaks
e
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
Tape Speed Adjustment DECK B
Note: Start the Tape Speed adjustment as below after setting to the test
mode.
In the test mode, the tape speed is high during pressing the
HI-DUB button.
Procedure:
1. Turn the power switch on.
2. Press the p button, ENTER/NEXT button and DISC 3 button
simultaneously.
(The “VOLUME” on the fluorescent indicator tube will blink
while in the test mode.)
To exit from the test mode, press the 1/u button.
Mode: Playback
test tape
WS-48B
(3 kHz, 0 dB)
frequency counter
3. Mode: Playback
test tape
P-4-A100
(10 kHz, –10 dB)
L-CH
MAIN
board
CN301
set
R-CH
waveform of oscilloscope
in phase 45°90°135°180
pin
L
R
pin
good
3
pin
1
2
oscilloscop
V
wrong
H
°
4. After the adjustments, apply suitable locking compound to the
pats adjusted.
Adjustment Location: Playback Head (Deck A).
Record/Playback/Erase Head (Deck B).
3
: L-CH)
1
: R-CH)
+
–
set
main board
CN301 (Pin
(Pin
1. Insert the WS-48B into the deck B.
2. Press the · button on the deck B.
3. Press the HI-DUB button in playback mode.
Then at HIGH speed mode.
4. Adjust RV1001 on the LEAF SW board do that frequency
counter reads 6,000 ± 180 Hz.
5. Press the HI-DUB button.
Then back to NORMAL speed mode.
6. Adjust RV1002 on the LEAF SW board so that frequency
counter reads 3,000 ± 90 Hz.
Adjustment Location: LEAF SW board
Playback level Adjustment DECK A DECK B
Procedure:
Mode: Playback
test tape
P-4-L300
(315 Hz, 0 dB)
set
level meter
+
–
forward
reverse
main board
CN301 (Pin
(Pin
3
1
: L-CH)
: R-CH)
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:
CN301 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 board
Sample Volue of Wow and Flutter: 0.3% or less W. RMS
(WS-48B)
— 14 —
REC Bias Adjustment DECK B
r
set
MD/VIDEO (AUDIO) IN
315 Hz, 50 mV (–23.8 dB)
blank tape
CS-123
600
Ω
attenuator
AF OSC
+
–
set
recorded
portion
CN301 (Pin
3
: L-CH)
(Pin
1
: R-CH)
level meter
REC LEVEL
1
3
RV301
L
RV351
R
CN303
CN301
CN304
Procedure:
INTRODUCTION
When set to the test mode performed in Tape Speed Adjustment,
when the tape is rewound after recording, the “REC memory mode”
which rewinds only the recorded portion and playback is set.
This “REC memory mode” is convenient for performing this
adjustment. During recording, the input signal FUNCTION will
automatically switch to VIDEO.
(If do not operation of stopped from recording complete, and press
– 0 button then rewind to recording start position.)
1. Press FUNCTION button to select VIDEO. (This step is not
necessary if the above test mode has already been set.)
2. Insert a tape into deck B.
3. After press r REC button, press P button, then recording
start.
4. Mode: Record
4. Mode: Record
5. Mode: Playback
MD/VIDEO (AUDIO) IN
1) 315 Hz
2) 10 kHz
AF OSC
attenuator
50 mV (–23.8 dB)
600
Ω
set
blank tape
CN-123
5. Mode: Playback
recorded
portion
set
CN301 (Pin
(Pin
3
1
: L-CH)
: R-CH)
level mete
+
–
6. Confirm playback the signal recorded in step 3 become
adjustable level as follows.
If these levels do not adjustable level, adjustment the RV341
(L-CH) and R V441 (R-CH) on the A UDIO board to repeat steps
4 and 5.
Adjustable level: Playback output of 315 Hz to playback output
of 10 kHz: ±1.0 dB
Adjustment Location: AUDIO board
6. Confirm playback the signal recorded in step 3 become
adjustable level as follows.
If these levels do not adjustable level, adjustment the RV301
(L-CH) and R V351 (R-CH) on the MAIN board to repeat steps
4 and 5.
Adjustable level:
CN301 PB level: 47.2 to 53.0 mV (–24.3 to –23.3 dB)
Adjustment Location: MAIN board
[MAIN BOARD] (Component Side)
REC Level Adjustment
Procedure:
INTRODUCTION
When set to the test mode performed in Tape Speed Adjustment,
when the tape is rewound after recording, the “REC memory mode”
which rewinds only the recorded portion and playback is set.
This “REC memory mode” is convenient for performing this
adjustment. During recording, the input signal FUNCTION will
automatically switch to VIDEO.
(If do not operation of stopped from recording complete, and press
– 0 button then rewind to recording start position.)
1. Press [FUNCTION] button to select VIDEO. (This step is not
necessary if the above test mode has already been set.)
2. Insert a tape into deck B.
3. After press r REC button, press P button, then recording
start.
DECK B
— 15 —
[AUDIO BOARD] (Component Side)
RV441
RV401
RV301
LR
PB LEVEL
– DECK B –
[LEAF SW BOARD] (Component Side)
TAPE SPEED
(NORMAL) (HIGH)
RV1002
RV1001
IC602
RV341
RL
REC BIAS
CN601
RV311
– DECK A –
CN1001
RV411
LR
PB LEVEL
CD SECTION
e
)
r
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.
Note : Clear RF signal waveform means that the shape “ ◊ ” can be clearly
distinguished at the center of the waveform.
RF signal waveform
VOLT/DIV : 200mV
TIME/DIV : 500ns
level : 1.45
±
0.3Vp-p
S-Curve Check
Oscilloscope
BD board
TP(FE)
TP(VC)
Procedure :
1. Connect oscilloscope to TP (FE).
2. Connect between TP (FEI) and TP (VC) by lead wire.
3. Connect between TP (AGCCON) and TP (GND) by lead wire.
4. Turn Power switch on.
5. Load a disc (YEDS-18) and actuate the focus search. (In
consequence of open and close the disc tray, actuate the focus
search)
6. Confirm that the oscilloscope waveform (S-curve) is
symmetrical between A and B. And confirm peak to peak level
within 4 ±1 Vp-p.
S-curve waveform
symmetry
A
within 4
±
1Vp-p
B
E-F Balance (1 Track jump) Check
oscilloscop
BD board
TP(TE)
TP(VC)
Procedure :
1. Connect oscilloscope to TP (TE) and TP (VC).
2. Turned Power switch on.
3. Load a disc (YEDS-18) and playback the number five track.
4. Press the ( button. (Becomes the 1 track jump mode.)
5. Confirm that the le vel B and A (DC voltage) on the oscilloscope
waveform.
1 track jump waveform
0V
level=1.3±0.6Vp-p
Specified level: –– × 100=less than ±22%
A
B
B
symmetry
center of
waveform
A (DC voltage
7. After check, remove the lead wire connected in step 2 and 3.
Note : • Try to measure several times to make sure than the ratio
of A : B or B : A is more than 10 : 7.
• Take sweep time as long as possible and light up the
brightness to obtain best waveform.
RF Level Check
oscilloscope
BD board
TP(RF)
TP(VC)
Procedure :
1. Connect oscilloscope to TP (RF).
2. Connect between TP (AGCCON) and TP (GND) by lead wire.
3. Turned Power switch on.
4. Load a disc (YEDS-18) and playback.
5. Confirm that oscilloscope wav eform is clear and check RF signal
level is correct or not.
6. After check, remove the lead wire connected in step 2.
6. After check, remove the lead wire connected in step 1.
RF PLL Free-run Frequency Check
Procedure :
1. Connect frequency counter to test point (PLCK) with lead wire.
BD board
TP (PLCK)
frequency counte
2. Turned Power switch on.
3. Put the disc (YEDS-18) in to play the number five track.
Confirm that reading on frequency counter is 4.3218MHz.
— 16 —
Adjustment Location:
[BD BOARD] (Conductor Side)
TP(VC)
TP(RF)
TP(AGCCON)
TP(TE)
CN102
TP(FE)
TP(FE1)
TP(TE1)
20
21
IC101
40
41 60
TP(PLCK)
TP(GND)
1
80
61
— 17 —
7-1. CIRCUIT BOARDS LOCATION
d
d
SECTION 7
DIAGRAMS
CD SW board
PANEL board
ST-BY board
AC SEC board
TUNER UNIT
MAIN boar
CONNECTOR board
SENSOR board
MOTOR (TURN) board
BD board
MOTOR (SLIDE) boar
AUDIO board
LEAF SW board
— 18 —
7-2. BLOCK DIAGRAMS
— CD SECTION —
OPTICAL PICK-UP BLOCK
(KSS-213D/Q-RP)
DETECTOR
E
A
LASER
DIODE
LD
POWER
M102
SLED
MOTOR
M101
SPINDLE
MOTOR
C
D
B
E
F
A
C
D
B
F
LD
PD
TRACKING
COIL
FOCUS
COIL
16
HCD-GRX30/GRX30J/R550/RXD5
VCC
VC
A
5
C
7
D
8
B
6
E
11
F
10
LD
DRIVE
Q101
FOCUS/TRACKING COIL DRIVE
SPINDLE/SLED MOTOR DRIVE
T+
12
T-
11
F+
14
F-
13
SD+
17
M
SD-
18
SP+
15
M
SP-
16
LD
3
PD
4 22
IC102
5
6
2
3
23
24
25
APC LD
AMP
TFDR
TRDR
FFDR
FRDR
SRDR
SFDR
RF AMP
IC103
RF
SUMMING
AMP
FOCUS
ERROR
AMP
TRACKING
ERROR
AMP
RF EQ
AMP
VC
BUFFER
RF
FE
TE
LD ON
DIGITAL SERVO
DIGITAL SIGNAL PRCESSOR
VC
51
49
48
38
43
39
41
40
14
66
67
27
30
31
32
33
29
28
26
16
INTEGRATOR
14
13
INTEG-
VC
12
RATOR
X101
16.9344MHz
S101
LIMIT
TFDR
TRDR
FFDR
FRDR
SRDR
SFDR
RF AC
ASYI
ASYO
RF DC
FE
TE
SE
XLON
XTAI
XTAO
SSTP
TFDR
TRDR
FFDR
FRDR
SRDR
SFDR
MDP
IC101
D OUT
R OUT
DATA
XLAT
CLOK
SQSO
SQCK
SCLK
SENS
60
72L OUT
75
5
6
7
1
2
9
8
20SCOR
3XRST
R-CH
SYSTEM CONTROL
35
CD-DATA
38
XLT
37
CD-CLK
32
SQ-DATA
33
SQ-CLK
56
SENS
19
SCOR
IC501(1/3)
TBL-SENS
TBL-R
LOAD-OUT
LOAD-IN
TBL-L
60DISC-SENS
61
63
65
66
67
D+5V
2
OPTICAL
3
TRANCEIVER
1
LEVEL SHIFT
3
MOTOR
DRIVER
6
10
MOTOR
DRIVER
12
IC381
Q701
DISC TRAY
SENSOR
IC702
IC701
IC801
7
2
7
4
S811
CD DIGITAL
OUT
OPTICAL
DISC SENSOR
IC703
M
TURN MOTOR
M
SLIDEMOTOR
CD L
M701
DISC TRAY
M801
DISC TRAY
A
MAIN
SECTION
(Page 23)
• RCH is omitted
• Signal Path
: CD PLAY
: DIGITAL OUT
MUTE
20
S801
OPEN/CLOSE
59
XRST
71
OUT OPEN
— 19 — — 20 —
ENC1
ENC2
ENC3
70
69
68
4
2
3
ROTARY
ENCODER
HCD-GRX30/GRX30J/R550/RXD5
— TAPE DECK SECTION —
HRP1
(PLAYBACK)
L-CH
R-CH
HRP2 (1/2)
(RECORD/PLAYBACK)
L-CH
R-CH
R-CH
R-CH
MAIN
SECTION
(Page 23)
3
R-CH R-CH
B
REC/PB SWITCH
1
REC-L
PB EQ AMP
(DECK A)
IC611
PB EQ AMP
(DECK A)
IC601
IC602
RV311
PB LEVEL (L)
(DECK A)
RV301
PB LEVEL (L)
(DECK B)
DECK PROCESSOR
DECK A/B SELECT,PB/REC EQ AMP
DOLBY NR AMP,ALC,AMS
43
44
48
46
33
32
31
(DECK A 120/70)
(DECK B 120/70)
IC301
R IN (L)
ALC (L)
ALC
A IN (L)
B IN (L)
BIAS (N)
BIAS (C)
BIAS (M)
17
S1004
S1008
34 35
70
120
A 120/70
B NORM/CROM
19
R-CH
PB A/B
ALC ON/OFF
16
15
BIAS ON/OFF
NORM/HIGH
20
18
RM ON/OFF
23
22
DOLBY PASS
L.P.F
REC/PB/PASS
NR ON/OFF
25
24
LM ON/OFF
DOLBY NR
AMP
CIRCUIT
RV301
REC LEVEL (L)
(DECK B)
39 38
28 27
PB OUT (L)
REC EQ
CIRCUIT
AMP
AMS
• RCH is omitted
• Signal Path
: PLAYBACK (DECK A)
: PLAYBACK (DECK B)
40
36
26
TC L
C
MAIN
SECTION
(Page 23)
: RECORD
RV441
REC BIAS (R)
(DECK B)
HRP2 (2/2)
(ERASE)
4
73
SL1
TAPE SPEED
Q335
A-TRG
RV1001
(HIGH)
CAP-M CNT 2
CAP-M CNT 1
TRIGGER
PLUNGER DRIVE
(DECK B)
Q331,332
TRIGGER PLUNGER
(DECK B)
CAPSTAN MOTOR
CONTROL SWITCH
Q1001
B-TRG
72
SL2
2
C331,L331
BIAS
TRAP
R-CH
16
RV341
REC BIAS (L)
(DECK B)
BIAS OSC
T621
REC BIAS
SWITCH
Q623
BIAS OSC
Q621,622
A+7V
100
TC-RELAY
A-PLAY SW
87
87
S1001
(DECK-A PLAY)
B-PLAY SW
86
S1002
(DECK-B PLAY)
85
84
PB -A/B
ALC-ON/OFF
(DECK-A HALF)
83
82
BIAS
EQ-H/N
S1003
81
80
REC-MUTE
88
79
78
TC-MUTE
R/P-PASS
NR-ON/OFF
A-HALF
(DECK-B HALF)
S1006
B-HALF
89
SYSTEM CONTROL
IC501 (2/3)
S1005
(DECK-A REC)
S1009
(DECK-B REC)
A-SHUT
91
ROTATION
DETECT SENSOR
(DECK A)
IC001
77
AMS IN
B-SHUT
90
ROTATION
DETECT SENSOR
(DECK B)
IC002
76
CAP-M H/L
TRIGGER
PLUNGER DRIVE
(DECK A)
Q333,334
TRIGGER PLUNGER
(DECK A)
74
75
RV1002
TAPE SPEED
(NORMAL)
CAPSTAN
MOTOR DRIVE
Q336-339
CAPSTAN
MOTOR DRIVE
Q340-343
M
M1
(CAPSTAN)
— 21 — — 22 —
HCD-GRX30/GRX30J/R550/RXD5
— MAIN SECTION —
B
TC
SECTION
(Page 21)
J711
MIX MIC
A
CD
SECTION
(Page 20)
C
TC
SECTION
(Page 22)
J101 (1/2)
VIDEO/MD
(AUDIO) IN
FM75Ω
AM
L
R
ANTENNA
• RCH is omitted
• Signal Path
: CD PLAY
: TAPE PLAY
: RECORD
: TUNER (FM/AM)
: MIC INPUT
R-CH
FM/AM TUNER UNIT
FM ANT
FM ANT
AM ANT
AM ANT
ST-L
ST-R
ST-MUTE
STEREO
TUNED
ST-DIN
ST-DOUT
ST-CLK
ST-CE
RV712
MIC VOL
MIC AMP
IC712(1/2)
R-CH
52 55 54 53 51 50 49 7
ST-CE
ST-CLK
64
66
68
67
IN F2
IN D2
IN B2
IN C2
ST-DOUT
IC712(2/2)
ST-DIN
MIC AMP
GRAPHIC EQUALIZER CONTROL,
ELECTRICAL VOLUME
INPUT
SELECT
R-CH
INTERFACE
DATA
33
47
TUNED
STEREO
ST-MUTE
M62493-DATA
IC101
CONTROL
CPU
LATCH
CLOCK
32 34
48 38
M62493-CLK
M62493-LATCH
SOUND
CIRCUIT
KEY IN2
60 5 59
DATA
30
25
IIC-DATA
KEY IN1
CLK
IIC-CLK
B OUT
2
POWER
2 5830
MIC IN
MIC IN
5
CD-POWER
57
L+R
GRAPHIC
EQUALIZER
CONTROL
CIRCUIT
POWER
FL SW
REC B2
FOUT2
F
G
H
J
I
42
DISPLAY
SECTION
(Page 25)
POWER
SECTION
(Page 25)
VOL IN2
41
13
VOLUME
CONTROL
X613
16MHz
15
X IN
X OUT
SYSTEM CONTROL
IC501 (3/3)
32.768kHz
11
XC OUT
REC A2
R-CH
DATA,CLK
CD-POWER
STBY RELAY
43
47
FL SW
STBY RELAY
72
VOL OUT2
X601
10
R-CH
XC IN
BASS BOOST
CONTROL
CIRCUIT
BB B2
BB A2
.
38 39
FEED BACK
DBFB CONTROL
SWITCH
Q111
DBFB-H/L
SWITCH
Q112
1
OUT2
R-CH
MUTE SWITCH
MUTE SWITCH
Q803,804,865
STK-MUTE
Q412
US, CND/GRX30/GRX30J
MODEL
36
MUTE
Q191
MUTE
Q113
Q113
D141
MUTE SWITCH
Q508,509
6
LINE-MUTE
POWER AMP
Q112
22
12
AC-CUT
IC801
D+5V
D+5V
A-7V
RESET
RESET
SWITCH
Q501
• Abbreviation
CND : Canadian model
SPEANA
R-CH
MUTE
Q461
1418
R-CH
R-CH
RESET SIGNAL
3
GENERATOR
OVER LOAD
DETECT
Q801
R-CH
DC DEFECT
SWITCH
Q433,434
IC502
MUTE
Q411
D803
1
R-CH
OVER LOAD
DETECT SW
Q432,437
PROTECTOR
Q439
+5V
RY401
RELAY DRIVE
Q431
PROTECTOR
Q435,436
27
PROTECTOR IN
3
F-RELAY
US, CND/GRX30/GRX30J MODEL
RESET
36
RY-SW
D
DISPLAY
SECTION
(Page 25)
L
J101 (2/2)
VIDEO/MD
(REC OUT)
R
J191
SUPER WOOFER
PHONES
TM401
L
SPEAKER
IMPEDANCE
USE 6-16Ω
R
DISPLAY
SECTION
(Page 25)
J701
E
16
— 23 — — 24 —
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