Sony HCDGRX-80 Service manual
HCD-GRX80/RXD8/RXD8S
SERVICE MANUAL
HCD-GRX80/RXD8/RXD8S is the
tuner, deck, CD and amplifier section
in MHC-GRX80/RXD8/RXD8S.
Photo: HCD-RXD8 (SILVER)
Model Name Using Similar Mechanism HCD-GRX8/R800/RX88/RX99
CD
SECTION
TAPE DECK
SECTION
CD Mechanism Type CDM38LH-5BD32L
Base Unit Type BU-5BD32L
Optical Pick-up Type KSS-213D/Q-N
Model Name Using Similar Mechanism HCD-GRX8/R800/RX88/RX99
T ape Transport Mechanism T ype TCM-230AWR1/230PWR1
AEP Model
HCD-RXD8/RXD8S
UK Model
HCD-RXD8
E Model
Australian Model
HCD-GRX80
SPECIFICATIONS
— Continued on next page —
MICROFILM
COMPACT DISC DECK RECEIVER
– 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.
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.
This caution
label is located
inside the unit.
SAFETY-RELATED COMPONENT WARNING !!
COMPONENTS IDENTIFIED BY MARK ! OR DO TTED 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.
– 2 –
MODEL IDENTIFICATION
— BACK PANEL —
Parts No.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pickup block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.
PARTS No. MODEL
PRODUCT
COUNTRY
4-214-451-0π GRX80: E2, AR MALAYSIA
4-214-451-1π GRX80: EA3 MALAYSIA
4-214-451-2π GRX80: SP MALAYSIA
4-214-451-3π GRX80: MX INDONESIA
4-214-451-4π GRX80: MX MALAYSIA
4-214-451-5π GRX80: AUS MALA YSIA
4-214-451-6π GRX80: TW MALAYSIA
4-214-451-7π GRX80: E2 INDONESIA
4-214-451-8π GRX80: EA4, TH THAILAND
4-214-451-9π GRX80: E3 MALAYSIA
4-217-515-2π GRX80: E3 INDONESIA
4-217-515-3π GRX80: EA3 INDONESIA
4-215-165-0π GRX8: AEP, G, CIS, UK INDONESIA
4-215-165-2π GRX8S: AEP INDONESIA
4-215-165-3π GRX8: AEP MALA YSIA
• Abbreviation
G : German model
MX : Mexican model
SP : Singapore model
TW : Taiwan model
AUS : Australian model
TH : Thai model
EA3 : Saudi arabia model
EA4 : Israel model
E2 : Without SW tuner E model
E3 : With SW tuner E model
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output four times.
– 3 –
TABLE OF CONTENTS
1. SERVICING NOTE .......................................................... 5
2. GENERAL .......................................................................... 6
3. DISASSEMBLY
3-1. Loading Panel ....................................................................... 8
3-2. Front Panel ............................................................................ 8
3-3. Cassette Lid and Tape Mechanism........................................ 9
3-4. CD SW Board and Panel Board............................................9
3-5. Disc Tray.............................................................................10
4. SERVICE MODE ............................................................ 11
5. MECHANICAL ADJUSTMENTS ..........................14
6. ELECTRICAL ADJUSTMENTS ............................... 14
7. DIAGRAMS
7-1. Circuit Boards Location ...................................................... 18
7-2. Block Diagrams
• CD Section ....................................................................... 19
• Deck Section .................................................................... 21
• Main Section .................................................................... 23
• Main Power/Sub Power Section ...................................... 25
• Display Section ................................................................ 27
7-3. Printed Wiring Board – BD (CD) Section – ....................... 31
7-4. Schematic Diagram – BD (CD) Section – .......................... 33
7-5. Printed Wiring Board – Main Section – .............................. 35
7-6. Schematic Diagram – Main (1/4) Section – ........................ 37
7-7. Schematic Diagram – Main (2/4) Section – ........................ 39
7-8. Schematic Diagram – Main (3/4) Section – ........................ 41
7-9. Schematic Diagram – Main (4/4) Section – ........................ 43
7-10. Printed Wiring Board – Leaf SW Section – ..................... 45
7-11. Schematic Diagram – Leaf SW Section – ........................ 46
7-12. Schematic Diagram – Deck Section – .............................. 47
7-13. Printed Wiring Board – Deck Section – ........................... 49
7-14. Printed Wiring Board – Panel Section –........................... 51
7-15. Schematic Diagram – Panel (1/3) Section –..................... 53
7-16. Schematic Diagram – Panel (2/3) Section –..................... 55
7-17. Schematic Diagram – Panel (3/3) Section –..................... 57
7-18. Schematic Diagram – CD Motor Section –......................59
7-19. Printed Wiring Board – CD Motor Section – ................... 61
7-20. Schematic Diagram – Trans Section – ............................. 63
7-21. Schematic Diagram – Sub Trans Section – ...................... 65
7-22. Printed Wiring Board – Trans Section –........................... 67
7-23. Printed Wiring Board – Sub Trans Section – ................... 68
7-24. IC Block Diagrams ........................................................... 69
7-25. IC Pin Functions ............................................................... 70
8. EXPLODED VIEWS
8-1. Case Section........................................................................73
8-2. Chassis Section ................................................................... 74
8-3. Front Panel Section ............................................................. 75
8-4. CD Mechanism Deck Section-1 (CDM38LH-5BD32L) .... 76
8-5. CD Mechanism Deck Section-2 (CDM38LH-5BD32L) .... 77
8-6. Base Unit Section (BU-5BD32L) ....................................... 78
8-7. TC Mechanism Section-1 (TCM230AWR1/230PWR1) .... 79
8-8. TC Mechanism Section-2 (TCM230AWR1/230PWR1) .... 80
9. ELECTRICAL PARTS LIST ........................................ 81
– 4 –
SECTION 1
SERVICING NOTE
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 the direction
of arrow.
Note for Installation (ROTARY ENCODER)
BU cam
Groove
Section A
Note:When attaching the Base unit, Insert the
section A into the groove of BU cam.
Note:When attaching the BU cam,
engage the Rotary encoder
switch as shown in the figure.
CD-TEXT
This unit is provided with a simple CD-TEXT display function.
The CD-TEXT contents of 20 tracks are displayed on the fluorescent display tube.
Since the function is simple, some special characters may not be displayed, or may be displayed as other characters.
– 5 –
Front Panel
SECTION 2
GENERAL
23 4 7561
8
62
56
39
55
43
38
54
51
37
36
53
50
4142
35
61
60
59
58
57
34
52
40
9
10
11
13
14
12
4849
18
16
20
1715
21
44454647
3233
19
22
23
24
25
26
27
– 6 –
28
29
30
31
LOCATION OF PARTS AND CONTROLS
1 1/u (Power) button and indicator
2 DEMO (STANDBY) POWER SAVE
button (RXD8/RXD8S)
DEMO button (STANDBY) (GRX80)
3 DISC 1 button and indicator
4 DISC 2 button and indicator
5 DISC 3 button and indicator
6 DISC SKIP/EX–CHANGE button
7 § (Eject) button
8 Disc tray
9 EDIT DIRECTION/TUNER MEMORY
button
10 PLA Y MODE/DOLBY NR/PTY button
(RXD8/RXD8S)
PLAY MODE/DOLBY NR button
(GRX80)
11 REPEAT/STEREO/MONO button
12 p button
13 ^ (CD) button and indicator
14 TUNER/BAND button
15 NON-STOP button and indicator
16 KARAOKE PON/MPX button
17 SYNC EQ button
18 SYNC BASS button
19 REC PAUSE/START button and
indicator
20 DBFB button
21 SURROUND button
22 HI DUB button
23 CD SYNC button
24 VOLUME knob
25 PHONES jack
26 ENTER/NEXT button and indicator
27 ) + button and indicator
28 JOG/0x) dial and indicator
29 GROOVE button and indicator
30 –0 button and indicator
31 AUTO BPM button and indicator
32 PAD B button and indicator
33 PAD A button and indicator
34 MIX MIC jack
35 FLASH button
36 LOOP button
37 JAM button and indicator
38 LEVEL button
39 MIX button
40 MIC LEVEL knob
41 BEAT SPEED button
42 BEAT SELECT button
43 BEAT ON/OFF button and indicator
44 P FILE MEMORY button
45 GEQ CONTROL button
46 FILE SELECT
47 EFECT button
48 ( (B deck) button and indicator
49 9 (B deck) button and indicator
50 ( (A deck) button and indicator
51 9 (A deck) button and indicator
52 FUNCTION button
53 SYNC BASS H indicator
54 SYNC BASS L indicator
55 SYNC EQ indicator
56 EFECT indicator
57 Remote sensor
58 DISPLAY button
59 SPECTRUM ANALYZER button
60 CLOCK/TIME SET button
61 TIMER SELECT button and indicator
62 Display Window
This section is extracted from
instruction manual.
– 7 –
SECTION 3
)
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
3-1. LOADING PANEL
Claws
3
Loading panel
2
Pull-out the disc tray.
1
Turn the cam to the direction
of arrow.
3-2. FRONT PANEL
2
6
Screw (BVTT3x6)
0
Front panel
4
Screw (BVTT3x6)
Screw (BVTT3x6)
8
Flat type wire
(CN304)
Lead wire
9
Flat type wire
(CN303)
5
Screw
(BVTT3x6)
7
Flat type wire
(CN501)
Lead wire
1
Screw (BVTT3x6)
3
Screw (BVTT3x6
– 8 –
3-3. CASSETTE LID AND TAPE MECHANISM
1
Release
3
Cassette holder (R)
assembly
4
Cassette holder (L)
assembly
Portion
A
Portion
B
Portion
B
5
Spring
7
T wo screws
(BVTP2.6x8)
8
Three screws
(BVTP2.6x8)
9
T ape mechanism
6
Spring
2
Release
(Refer to order No. 1)
Portion
A
Portion
C
Portion
C
Portion
A
)
3-4. CD SW BOARD AND PANEL BOARD
3
CD SW board
4
Knob (Jog)
6
Nut
7
Nut
5
Knob (Vol)
1
Three screws
(BVTP2.6x8)
2
Three screws
(BVTP2.6x8)
!™
Panel board
8
Flat type wire
(CN601)
9
Four screws
(BVTP2.6x8
0
Five screws
(BVTP2.6x8)
!¡
Five screws
(BVTP2.6x8)
– 9 –
3-5. DISC TRAY
(Perform after removing the front panel.) Note:When installing the Disc tray, pull around the flat type wire to
3
Flat type wire (8 core)
4
Two claws
2
Pull-out the disc tray.
5
Remove the disc tray.
pass through the claw
Claw
A
A
and claw B, as shown in the figure.
Claw
B
1
Turn the cam the
direction of arrow.
– 10 –
SECTION 4
SER VICE 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 simultaneously.
2. “COLD RESET” is displayed on the fluorescent display tube and reset is executed.
CD Delivery Mode
• This mode moves the pick-up 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 reset mode functions same as if the po wer 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 pick-up.
Procedure:
1. Press 1/u button to turn the set ON.
2. Press three buttons p , ENTER/NEXT , and § simultaneously.
3. The Sled Servo mode is selected, if “CD” is blanking on the fluorescent indicator tube.
4. W ith the CD in stop status, When the 0 AMS ) knob is rotated in the clockwise direction, the pick-up moves outside. When rotated
counterclockwise, it moves inside.
5. To exit from this mode, perform as follows:
1) Move the pick-up to the most inside track.
2) Execute MC cold reset. (Press the three buttons p , ENTER/NEXT , and 1/u button simultaneously.)
Note:
• Always move the pick-up 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 9kHz and 10kHz
• A step of AM channels can be changed over between 9kHz and 10kHz.
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. Pr ess ENTER/NEXT and 1/u buttons simultaneously , and the display of fluorescent indica tor tube changes to “ AM 9k STEP” or “ AM
10k 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 k ey check mode, the fluorescent indicator tube displays “K 0 V0 J0”. Each time a button is pr essed, “K”value increases. Howe v er,
once a button is pressed, it is no longer taken into account.
“J” Value increases like 1, 2, 3 ... if rotating 0 AMS ) 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 –
AMS Test Mode
• This mode is used for checking the AMS operations of the tape deck.
JIG
7-819-039-12 Alignment tape, AMS-110A
Procedure:
1. Press the 1/u button to turn the unit ON.
2. Set the tape (AMS-110A).
3. Press the three buttons p , ENTER/NEXT , and DISC 3 button simultaneously.
4. “TEST MODE” is displayed on the fluorescent display tube.
5. Press the FUNCTION button and switch the function to the deck with the tape (AMS-110A).
6. Press the CD SYNC button. “AMS CHECK” is displayed on the fluorescent display tube and the tape is rewound.
7. AMS starts in the normal direction. If the AMS count is 2 at shut down, proceed to step 8.
“NG” is displayed at other times, and the deck stops.
8. AMS starts in the opposite direction. If the AMS count is 2 at shut down again, “OK” is displayed.
“NG” is displayed at other times.
Note:The p button of CD section will become ef fecti v e and the aging of CD section will stop sometime, if the b uttons described in ste p 3
are not pressed simultaneously. In that case, press ^ button and operate the CD section.
Aging Mode
During the aging mode, both the CD player and tape deck are executed together.
• If an error occurs:
Aging stops, and the error state is displayed on the fluorescent display tube.
• If no error occurs:
Aging is repeated.
Procedure:
1. Press the 1/u button to turn the unit ON.
2. Load 10 minute tapes with unbent rec-proof tabs in decks A and B.
3. Set CD on the DISC 1 table.
4. Set the CD mode REPEAT to OFF and PLAY MODE to ALL DISCS.
(Press the PLAY MODE/DOLBY NR and REPEAT/STEREO/MONO buttons to set these modes.)
5. Press the FUNCTION button to switch the function to “CD”.
6. Press the three buttons p , ENTER/NEXT , and DISC SKIP/EX-CHANGE button simultaneously.
7. Aging starts.
8. To end aging, press the 1/u button to turn the unit OFF.
Aging Sequence:
Aging is performed in the following sequence.
• T ape Deck
1. The tape in deck A is rewound. “TAPE A AG-1” is displayed.
2. The FWD side of deck A is played for two minutes.
“TAPE A AG-2” is displayed.
3. The tape in deck A is fast forwarded. “TAPE A AG-3” is displayed. Fast forward is carried out for 20 seconds or to the tape end.
4. The RVS side of deck A is played for two minutes.
“TAPE A AG-4” is displayed.
5. The tape in deck A is rewound. “TAPE A AG-5” is displayed.
6. The FWD side of deck B is played for two minutes.
“TAPE B AG-2” is displayed.
7. The tape in deck B is fast forwarded. “TAPE B AG-3” is displayed. Fast forward is carried out for 20 seconds or to the tape end.
8. The RVS side of deck B is played for two minutes.
“TAPE B AG-4” is displayed.
9. The tape in deck A is rewound. “TAPE A AG-5” is displayed.
10. Repeated from step 2.
• CD
1. The tray rotates.
2. DISC 1 is chucked.
3. The TOC is read.
4. The first track is played for 2 seconds.
5. The last track is played for 2 seconds.
6. Repeated from step 1.
– 12 –
• Display when ended abnormally
When the tape deck is abnormal:
The state when ended abnormally is displayed.
The contents of display are the same as that during aging.
When the CD player is abnormal:
A message indicating that errors such as “CD MEC ERR” have occurred.
Check the error contents in the following error history display mode.
Error History Display Mode
Mode which enables the history of error occurring in the CD player to be checked.
Execute this mode after ending the aging mode.
Procedure:
1. Press the 1/u button to turn the unit ON.
2. Press the three buttons p , ENTER/NEXT , and CD SYNC simultaneously.
3. A message such as “EMC@@EDC**” is displayed.
@@ : Number of mechanical errors (Up to three past errors)
** : Number of errors (NO DISC ERROR) which occurs after chucking (Up to three past errors)
4. When checking the history of mechanical errors, press the PLAY MODE/DOLBY NR buttons. When checking errors after chucking,
press the REPEAT/STERO/MONO buttons to switch the display.
5. Press the 1/u button to end and turn the unit OFF.
6. To erase the error history, perform COLD reset.
(Press the three buttons p , ENTER/NEXT , and DISC 1 simultaneously.
• Viewing the mechanical error history display
(Switch the history by pressing the
PLAY MODE/DOLBY NR button.)
Display
E@@M**#*$*
@@ : Error number. 00 is the newest.
* : Invalid
# : Loading
D : Stop that is due to a problem of other than mechanism
during CLOSE mode.
E : Stop that is due to a problem of other than mechanism
during OPEN mode.
C : Stop that is due to a problem of other than mechanism
during CHUCK UP mode.
F : Stop that is due to a problem of other than mechanism
during EX OPEN mode.
$ : Emerging
1 : Stop during CLOSE mode.
2 : Stop during CHUCK DOWN mode.
3 : Time limit of EX OPEN mode.
5 : Time limit of EX CLOSE mode.
• Viewing the NO DISC ERROR history display
(Switch the history by pressing the
REPEAT/STERO/MONO buttons.)
Display
E@@D##$$%*
@@ : Error number. 00 is the newest
## : Error contents
01 : Focus error
02 : GFS error
03 : Setup error
$$ : Retries
00 : NO DISC is determined without attempting chucking
retry
02 : NO DISC is determined after chucking retry.
% : State when determined as NO DISC
1 : When stopped
2 : At setup
3 : At TOC READ
4 : When accessing
5 : When playing
6 : When pausing
7 : When manual searching (during play)
8 : When manual searching (during pausing)
– 13 –
* : Invalid
SECTION 5
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
FWD
FWD
back tension
REV
REV
back tension
FF/REW
FWD tension
REV tension
Torque meter
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 0 dB=0.775V
1. Demagnetize the record/playback head with a head damagnetizer .
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to the
parts adjusted.
4. The adjustments should be performed with the rated power supply voltage unless otherwise noted.
5. The adjustments should be performed in the order given in this
service manual. (As a general rule, playback circuit adjustment
should be completed before performing recording circuit adjustment.)
6. The adjustments should be performed for both L-CH and R-CH.
7. Switches and controls should be set as follows unless otherwise
specified.
Signal
P-4-A100
WS-48B
P-4-L300
10 kHz, –10 dB
3 kHz, 0 dB
315 Hz, 0 dB
Record/Playback Head Azimuth Adjustment
(Deck A, Deck B)
Note: Perform this adjustments for both decks.
Procedure:
1. Mode : Playback
Used forTape
Azimuth Adjustment
Tape Speed Adjustment
Level Adjustment
test tape
P-4-A100
(10kHz, –10dB)
set
VIDEO IN
level meter
+
–
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 1 dB of peak.
L-CH
peak
screw
position
R-CH
peak
output
level
within
1 dB
L-CH
peak
R-CH
peak
within 1dB
screw
position
– 14 –
3. Mode: Playback Tape Speed Adjustment (Deck A)
)
test tape
P-4-A100
(10kHz, –10dB)
oscilloscope
MD OUT
Note: Set the test mode using the following method and begin tape
speed adjustment.
In the test mode, the speed will switch to double speed or
normal speed each time the HI DUB button is pressed.
set
Waveform of oscilloscope
in phase 45
good
°
135
90
°
°
wrong
180
°
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location: Playback Head (Deck A)
Record/Playback/Erase Head (Deck B)
Procedure:
With the power turned ON, press the p button, ENTER/NEXT
button, and DISC 3 button simultaneously.
(The “CD TYPE INDICA T OR” on the fluorescent display tube will
blink while in the test mode.)
To exit the test mode, press the 1/u button.
1. Insert the WS-48B into deck B.
2. Press the ( button of deck B.
3. Press the HI DUB button and play the tape at double speed.
4. Adjust RV1001 of the LEAF SW board so that the reading of
the frequency counter becomes 6000 ± 180 Hz.
5. Press the HI DUB button and play the tape at normal speed.
6. Adjust RV1002 of the LEAF SW board so that the reading of
the frequency counter becomes 3000 ± 90 Hz.
Adjustment Location: LEAF SW board
Sample Value of Wow and flutter
W.RMS (JIS) less than 0.3%
(test tape: WS-48B)
Playback Level Adjustment (Deck A, Deck B)
Procedure:
Mode: Playback
Reverse Foward
test tape
P-4-L300
(315Hz, 0dB)
set
MD OUT
level meter
Deck A is RV311 (L-CH) and RV411 (R-CH), deck B is RV301
(L-CH) and RV401 (R-CH)
so that adjustment within the following adjustment level.
Adjustment level:
CN301 playback 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
Adjustment Location
[LEAF SW BOARD]
RV1001(High Speed)
RV1002(Normal Speed
RV1002 RV1001
– 15 –
Record Bias Adjustment (Deck B)
Record Level Adjustment (Deck B)
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.
(After recording, press the – 0 button without stopping will
return to the position where recording was started.)
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, press the r REC button, and then
press the ( button to start recording.
3. Mode: Record
VIDEO (AUDIO) IN
1) 315 Hz
2) 10 kHz
AF OSC
attenuator
600
Ω
} 50 mV (–23.8 dB)
blank tape
CS-123
set
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.
(After recording, press the – 0 button without stopping will
return to the position where recording was started.)
1. Press FUNCTION button to select VIDEO 1. (This step is not
necessary if the above test mode has already been set.)
2. Insert a tape into deck B, press the r REC button, and then
press the ( button to start recording.
3. Mode: Record
VIDEO (AUDIO) IN
315Hz 50 mV (–23.8 dB)
AF OSC
attenuator
600
Ω
set
blank tape
CS-123
4. Mode: Playback
recorded
position
set
MD OUT
level meter
5. Confirm playback the signal recorded in step 2 become adjustment level as follows.
If these levels do not adjustment lev el, adjust the R V341 (L-CH)
and R V441 (R-CH) on the A UDIO board to repeat steps 3 and 4.
Adjustment level: The playback output of 10 kHz le vel dif ference
against 315 Hz reference should be ± 1.0 dB.
Adjustment Location: AUDIO board
Adjustment Location:
[AUDIO BOARD] (Conductor Side)
RV341(Lch),RV441(Rch)
Record Bias
RV301 RV401
RV441 RV341
RV311(Lch),RV411(Rch)
Playback Level (Deck A)
RV411
RV311
4. Mode: Playback
recorded
position
set
MD OUT
level meter
5. Confirm playback the signal recorded in step 2 become adjustment level as follows.
If these levels do not adjustment lev el, adjust the R V301 (L-CH)
and R V351 (R-CH) on the MAIN board to repeat steps 3 and 4.
Adjustment level:
CN403 playback level: 47.2 to 53.0 mV (–24.3 to –23.3 dB)
Adjustment Location: MAIN board
[MAIN BOARD] (Conductor Side)
Record Level (L CH)
RV301
43
42
29
56
28
1
CN303
RV351
Record Level (R CH)
IC301
15
14
RV301(Lch),RV401(Rch)
Playback Level (Deck B)
– 16 –
SECTION 7
MAIN board
PANEL board
CD SW board
ENCAPSULATED COMPONENT
(GRX80:E2.E3,EA3,AR,SP,TW,MX,AUS)
TUNER unit
(GRX80:EA4,TH/RXD8/RXD8S)
TRANS board
SUB TRANS board (RXD8/RXD8)
DIAGRAMS
HCD-GRX80/RXD8/RXD8S
CD SECTION
Note:
1. CD Block is basically constructed 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 w hen
the signal level is low than specified value with the following
checks.
S Curve Check
oscilloscope
BD board
TP (FE)
TP (VC)
Procedure :
1. Connect the oscilloscope to test points TP (FE) and TP (VC).
2. Connect TP (FEI) and GND, and TP (AGCCON) and GND of
the BD board with lead wires.
3. Press the 1/u button to turn the set ON.
4. With the disc (YEDS-18) loaded, press the ^ button and
perform focus search. (Focus search will be performed in the
same way even while the disc table is pushed in and out.)
5. Check the symmetry and peak to peak level of the oscilloscope
waveform (S curve) at this time.
+
–
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 ± 3 Vp-p
E-F Balance (1 Track Jump) check
oscilloscope
BD board
TP (TE)
TP (VC)
+
–
Procedure:
1. Connect oscilloscope to test point TP (TE) on BD board.
2. Press the 1/u button to turn the unit ON.
3. Put disc (YEDS-18) in to play the number five track.
4. Press the ^ button.
5. Check the le vel B of the oscilloscope's wa veform and the A (DC
voltage) of the center of the Traverse waveform.
Confirm the following:
• A/B x 100 = less then ± 22 (%)
• B = 1.3 ± 0.6 Vp-p
7-1. CIRCUIT BOARDS LOCATION
ENCAPSU LA TED COMPONENT/TUNER
unit is supplied as the assembled block.
S-curve waveform
symmetry
A
Within 4
±
1 Vp-p
B
6. After check, remove the lead wire connected in step 2.
Note: • Try to measure several times to make sure than the ratio of
A : B or B : A is more than 10 : 7.
• Tak e 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 test point TP (RF) and TP (VC) on BD
board.
2. Connect TP (AGCCON) and GND of the BD board with lead
wires.
3. Press the 1/u button to turn the set ON.
4. Put disc (YEDS-18) in and playback 5track.
5. Confirm tha t oscilloscope waveform is clear and check RF signal level is correct or not.
6. After check, remove the lead wire connected in step 2.
1 track jump waveform
0V
±
level : 1.3
0.6 Vp-p
Adjustment Location :
[ BD BOARD ] — SIDE A —
TP
(VC)
TP
(RF)
TP
(AGCCON)
TP (FE)
TP
(TE)
TP
(FE1)
Center of the waveform
B
A (DC voitage)
Symmetry
CONNECTOR board
MOTOR (TURN) board
BD board
SENSOR board
MOTOR (SLIDE) board
LEAF SW board
AUDIO board
– 17 –
– 18 –
HCD-GRX80/RXD8/RXD8S
7-2. BLOCK DIAGRAMS
– CD SECTION –
OPTICAL PICK-UP BLOCK
B+
K
E
A
D
A
B
D
C
C
B
F
LASER
DIODE
DETECTOR
IC381
1
D.OUT
FOCUS/TRACKING SERVO.
RF AMP
IC101 (1/2)
1
4
2
5
10
6
LD DRIVE
Q101
38
39
41
42
2
1
45
47
3637LD
PD1
PD2
F
E
FEI
FEO
TEO
TEI
PD
SENS1
SENS2
XRST
23
RF O
LOCK
C.OUT
FE O
FE M
TA M
TA O
DATA
XLT
CLK
FOK
33
19
24
25
26
6
7
12
13
22
21
20
27
RF
44
LOCK
29
14
CNIN
15
SEIN
DATAO
XLTO
15 16 17
71
CLKO
DOUT
27
MDP
FOK
23
21
SPOD
S101
LIMIT
IC381
CD DIGITAL
OUT
OPTICAL
DIGITAL SIGNAL PROCESSOR
IC103
CLOK
XLAT
DATA
10 11 12 75
SQCK
SENS
SCOR
SQSO
79 100
8
XRST
89 • 90
XTAI
LOUT1
LOUT2
16.9344MHz
•
XTAO
X101
86
93
L-CH
R-CH
CD CLK
CD DATA
SENS2
SCOR
SQ DATA
SQ CLK
SENS
M102
SLED MOTOR
M101
SPINDLE
MOTOR
09
XRST
TRACKING
FOCUS
COIL
11
M
•
12
13
M
•
14
COIL
2-AXIS
DEVICE
SLED/SPINDLE
MOTOR DRIVE
IC102 (2/2)
SLED MOTOR
DRIVE
SPINDLE MOTOR
DRIVE
T+
–
T
–
F
F+
6
3
15
16
18
17
9
MUTE
TRACKING
COIL DRIVE
FOCUS/TRACKING
COIL DRIVE
IC102 (1/2)
FOCUS
COIL DRIVE
SLED
SERVO
IC101 (2/2)
SL P
SL O
S801
DET
TABLE
SENSOR
IC702
DISC
SENSOR
IC703
ROTARY
ENCODER
S811
Q701
27
26
TURN
MOTOR DRIVER
IC701
M701
1416
TURN
MOTOR
M801
SLIDE
MOTOR
M
M
7
OUT1
2
OUT2
4
7
MOTOR DRIVER
OUT2
OUT1
SLIDE
IC801
IN1
IN2
RIN
FIN
OPEN/CLOSE
3
6
2
10
XLAT
TRAY SENS
DISC SENS
ENC 1
ENC 2
ENC 3
OUT-OPEN
TBL.L
TBL.R
LD IN
LD OUT
C
MAIN
SECTION
(Page 23)
• R CH: Same as L ch
• SIGNAL PATH
: CD
: Digital out
– 19 –
– 20 –
– DECK SECTION –
HCD-GRX80/RXD8/RXD8S
HP101
PB HEAD
(DECK A)
REC/PB HEAD
(DECK B)
HRPE101
ERASE HEAD
PB A/B
MS OUT
MAIN SECTION
PB L
LM ON/OFF
NORM/HIGH
NR ON/OFF
REC/PB/PASS
REC L
BIAS ON/OFF
RM ON/OFF
ALC ON/OFF
RELAY
CAPM CNT1
CAPM CNT2
CAP M H / L
A SHUT
B
MAIN
SECTION
(Page 23)
17
2
DOLBY NR
RECOUT
C
32 33
S1008
B CrO
19
B 120/70
PAS
BIAS SW
M
2
DOL
DOLBY
TYPE B
M1
CAPSTAN
MOTOR
28
27
M
MS
26
PB OUT
LM ON/
OFF
NORM/
HIGH
NR ON/
OFF
PB
RIN
BIAS ON/OFF
RM ON/OFF
ALC ON/OFF
CAP MOTOR
CONTROL
Q336-343
CONTROL
RV1002
NORMAL
SPEED
SPEED
Q1001
40
25
18
23
24
44
20
22
15
RV1001
HIGH
SPEED
SWITCH
Q335
REEL
DETECT
IC1001
S1004
A CrO
RV311
4
PLAYBACK
LEVEL
DECK A
RV301
PLAYBACK
LEVEL
DECK B
RV341
REC
BIAS
REC BIAS
BIAS OSC
T621, Q621, 622
IC611
L
R
L
R
X
R CH
R CH
3
P
ERASE BIAS
IC601
1
IC602
R
REC/PB
16
PB-A/B
A IN
48
B IN
46
REC LEVEL
+7.5V
Q623
EQIN
38
EQOUT
36
RV301
A 120/70
70
120
DOLBY NR
IC301
39
REEL
DETECT
IC1002
S1001 (A PLAY)
• R CH : Same as L ch
• SIGNAL PATH
+5V
S1002 (B PLAY)
: PB (DECK A)
: PB (DECK B)
: REC (DECK B)
09
• PLUNGER SOLENOID is supplied
as the MECHANICAL BLOCK ASSY.
A DECK/
B DECK
PLUNGER
MAIN SECTION
TRIGGER
MOTOR
CONTROL
Q331-334
S1003
(A HALF)
S1005
(REC A)
S1006
(B HALF)
S1009
(REC B)
+5V
+5V
B SHUT
A PLAY
B PLAY
A HALF
B HALF/REC A/REC B
B TRIG
A TRIG
– 21 – – 22 –
HCD-GRX80/RXD8/RXD8S
– MAIN SECTION –
J711
MIX
MIC
(Page 28)
DISPLAY
SECTION
F
VIDEO/IN
(AUDIO)
L
MD IN L
MD/VIDEO
(AUDIO)
OUT L
DJ-SIG
DJ-MUTE
J101
PB L
REC L
IC712(1/2)
RV712
MIC
LEVEL
GRX80:EA3
ECHO PROCESSOR
IC711
29
LPF 1 IN LPF 2 OUT
ECHO
LEVEL
IC712(2/2)
IC181(1/2)
GRX80:EA3
V
68
MD
69
TC
66
TU
67
CD
65
MUTE
Q181
SELECT
SWITCH
MICON
INTERFACE
34
33 32
1 2 3
IC181(2/2)
230
R-CH
R-CH
EQ
IC101(1/2)
EQ
AMP
58
57
SPE SIG
WAKE UP
STANDBY LED
IIC DATA
VOLUME
IC101(2/2)
Lch
42
41
38 39
DBFB
SWITCH
Q111,112
Lch
36
MUTE
Q113
72
37
Q201
MUTE
Q191
J191
SUPER
WOOFER
IIC CLK
TIMER LED
RESET
FRONT
DBFB
E
DISPLAY
SECTION
(Page 27)
B
DECK
SECTION
(Page 22)
FM/AM TUNER
TUNER UNIT IS
SUPPLED AS THE
ASSEMBLED
BLOCK
C
CD
SECTION
(Page 20)
09
RELAY
A SHUT
B HALF/REC A/REC B
B SHUT
A HALF
A PLAY
B PLAY
PB A / B
NORM/HIGH
BIAS ON/OFF
RM ON/OFF
NR ON/OFF
REC/PB PASS
CAPM CNT1
CAPM CNT2
ALC ON/OFF
LM ON/OFF
CAP M H/L
A TRG
B TRG
MS OUT
ST L
RDS DATA
RDS INT
ST-DOUT
ST-DIN
STEREO
TUNED
ST CE
ST-MUTE
ST-CLK
L CH
TBL. L
TBL. R
SCOR
TRAY SENS
HOLD
SENS
X RST
CD CLK
CD DATA
DISC SENS
SQ CLK
SQ DATA
X LAT
OUT-OPEN
ENC-1
ENC-2
ENC-3
LD IN
LD OUT
1
2
3
100
TC RELAY
A SHUT
91
90
B SHUT
89
B HALF
88
A HALF
87
A PLAY SW
86
B PLAY SW
84
PB A/B
83
EQ H//N
BIAS
82
81
REC MUTE
80
NR ON/OFF
R/PB PASS
79
CAPM CNT1
75
CAPM CNT2
74
85
ALC
TC MUTE
78
76
CAP M H/L
73
A TRG
72
B TRG
77
AMS IN
38
493-LAT
47
493-DATA
48
493-CLK
ST DIN
54
50
STEREO
TUNED
51
52
ST CE
49
ST MUTE
53
ST DOUT
ST CLK
55
63
TBL L
65
TBL R
SCOR
19
T SENS
61
HOLD
57
SENS
56
XRST
59
CD CLK
37
CD DATA
35
DISC SENS
60
SQ CLK
33
SQ DATA
32
XLT
58
OUT OPEN
71
ENC1
70
ENC2/DISC-LED
69
ENC3/UP-SW
68
LOAD IN
67
LOAD OUT
66
22
RDS DATA
RDS INT
21
RXD8,
RXD8S
MASTER CONTROL
IC501
BASS FRQ.
DBFB H/L
LINE MUTE
F RELAY
WAKE UP
ST-BY LED/CLOCK OUT
IIC DATA
IIC CLK
TIMER LED
RESET
AC CUT
(CHECK)
X-OUT
X-IN
XC-IN
XC-OUT
RY-SW
POWER
CD POWER
FL SW
STBY RELAY
STK MUTE
PROTECTOR
44
7
6
3
18
39
30
29
26
12
22
D503
13
15
10
11
RESET
SWITCH
Q501
3
RESET
IC502
1
+5.6V
X613
16MHz
X601
32.768KHz
MUTE SW
Q509
MUTE SW
Q508
MUTE
Q192
F RELAY
D
POWER
SECTION
(Page 25)
• R CH: Same as L ch
• SIGNAL PATH
36
RY-SW
: FM
: CD
2
5
42
43
1
27
POWER ON/OFF
CD POWER
FL SW ON/OFF
STANDBY RELAY
ON/OFF
STK MUTE
PROTECTOR
: PB
: REC
: VIDEO/MD
• Abbreviation
EA3 : Saudi Arabia model.
– 23 –
– 24 –
– MAIN POWER/SUB POWER SECTION –
F RELAY
FRONT
VH+
DBFB
STK MUTE
RY-SW
PROTECTOR
D
MAIN
SECTION
D+5V UNSW
(Page 24)
POWER ON/OFF
CD D+5V (SW)
CD A+5V (SW)
CD POWER
FL SW ON/OFF
VH+ SUPP
Q803, 881
RECTIFIER
+5.6V (STBY)
+5V (STBY)
(DISPLAY)
+5V REG
Q907
SWITCH
D507
Q908
D509
POWER AMP
IC801
18 14
16
MUTE
SWITCH
Q804
RECTIFIER
D925
+5V OUT
Q911
SWITCH
Q912
THERMAL
Q831, 832
OVER LOAD
Rch
Q412, 411
JW51
RDS D+5V UN SW
+5V (LED)
(DISPLAY)
D+5V
SWITCH
Q904
SWITCH
Q923, 903
IC904
3 1
REG
ST+10V
DET
THP831
Lch
DET
Q801
MUTE
SWITCH
RECTIFIER
D922
RECTIFIER
D924
+5V OUT
Q905
A+7V
A–7V
CD MOTOR +7V
TC MOTOR +12V
+10V REG
Q909
Rch
VH+
Rch
IC902
3 1
REG
+7V REG
Q901,902,913
–7V REG
Q951,952,914
IC901
3 1
+7V REG
IC903
3 1
+12V REG
RY401
PROTECT
CONTROL
Q432 - 434
+VH
–VH
+VL
–VL
Q435, 436, 431
RECT
D831
RECT
D832
RECT
D901-904
RECT
D907-910
RELAY
DRIVE
SWITCH
Q437
POWER TRANSFORMER
AC1
AC2
AC2
AC1
AC3
AC3
AC4
AC4
VF
VF
MUTE
SWITCH
Q439
T951
DISPLAY
(VIA POWER)
GRX80:E2,E3,EA3,SP,AR,TW
VOLTAGE
SELECTOR
S951
Rch
SUB TRANS. D+5.6V
COM MON
VG
VF
VF
FAN MOTOR
DRIVER
Q401, 402
FRONT
3 1
Rch
IC11
5.6V REG
-26V REG
Q12, 13
SWITCH
Q16, 17
UNREG
–7V
RXD8,RXD8S
M
J701
PHONES
RECT
D12-15
RECT
D17-20
VF BUFF
Q14, 15
RELAY DRIVE
Q11
TM402
SURROUND
SPEAKER
M901
FAN
MOTOR
TM401
FRONT
SPEAKER
T11
SUB TRANSFORMER
RY11RY11
HCD-GRX80/RXD8/RXD8S
• R CH : Same as L ch
• SIGNAL PATH
: FM
• Abbreviation
: Without SW tuner E model.
E2
: Without SW tuner E model.
E3
: Saudi Arabia model.
EA3
: Singapore model.
SP
: Malaysia model.
MY
: Hong Kong model.
HK
: Taiwan model.
TW
:Argentine model.
AR
RXD8,RXD8S
AC
IN
Q11
AC
IN
GRX80
STANDBY RELAY ON/OFF
09
– 25 –
– 26 –
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