Sony HCDRG-66-T Service manual

HCD-RG66T
SERVICE MANUAL
Ver 1.0 2002.02
HCD-RG66T is the amplifier, CD play er , tape deck and tuner section in MHC­RG66T.
CD Section
TAPE Section
E Model
Model Name Using Similar Mechanism NEW CD Mechanism Type CDM58E-30BD60C Base Unit Name BU-30BD60C Optical Pick-up Name A-MAX.3 Model Name Using Similar Mechanism NEW Tape T r ansport Mechanism Type TCM-230AWR41CS
Amplifier section
The following are measured at AC 120, 220, 240V 50/60 Hz DIN power output (rated) 100 + 100 watts
Continuous RMS power output (reference)
Inputs GAME (VIDEO): 1 Vp-p, 75 ohms (phono jack) GAME (AUDIO): Voltage 250 mV, (phono jacks) impedance 47 kilohms MD/VIDEO (AUDIO) IN: voltage 450 mV/250 mV, (phono jacks) impedance 47 kilohms MIC: sensitivity 1 mV, (phone jack) impedance 10 kilohms
Outputs VIDEO OUT: max. output level 1 Vp-p, (phono jacks) unbalanced, Sync.
PHONES: accepts headphones of (stereo mini jack) 8 ohms or more FRONT SPEAKER: accepts impedance of 6 to
(6 ohms at 1 kHz, DIN) 145 + 145 watts
(6 ohms at 1 kHz, 10% THD)
negative load impedance 75 ohms
16 ohms
CD player section
System Compact disc and digital Laser Semiconductor laser Laser Output Max. 44.6 µW*
Frequency response 2 Hz – 20 kHz (±0.5 dB) Wave length 795 nm CD OPTICAL DIGITAL OUT (Square optical connector jack, rear panel) Wave length 660 nm Output Level –18 dBm
Tape player section
Recording system 4-track 2-channel stereo Frequency response 50 – 13,000 Hz (±3 dB),
Tuner section
FM stereo, FM/AM superheterodyne tuner
audio system (λ=795nm) *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.
using Sony TYPE I cassette
FM tuner section
Tuning range 87.5 – 108.0 MHz Antenna FM lead antenna Antenna terminals 75 ohm unbalanced Intermediate frequency 10.7 MHz
AM tuner section
Tuning range Latin American models:
Middle Eastern models: 531 – 1,602 kHz
Other models: 531 – 1,602 kHz
Antenna AM loop antenna Antenna terminals External antenna terminal Intermediate frequency 450 kHz
530 – 1,710 kHz (with the interval set at 10 kHz) 531 – 1,710 kHz (with the interval set at 9 kHz)
(with the interval set at 9 kHz)
(with the interval set at 9 kHz) 530 – 1,710 kHz (with the interval set at 10 kHz)
– Continued on next page –
9-873-541-01 Sony Corporation
2002B0500-1 Home Audio Company C 2002.02 Published by Sony Engineering Corporation
COMPACT DISC DECK RECEIVER
HCD-RG66T
General
Power requirements Mexican model: Argentina model: Other models: 120 V, 220 V or 230 - 240
Power consumption Dimensions (w/h/d) Mass : Design and specifications are subject to change
without notice.
120 V AC, 60 Hz 220 V AC, 50/60 Hz
V AC, 50/60 Hz Adjustable with voltage selector
230 watts Approx. 280 x 360 x 445
mm Approx. 11.0 kg
Notes on chip component replacement
Never reuse a disconnected chip component.
Notice that the minus side of a tantalum capacitor may be dam-
aged 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.
The following caution label is located inside the unit.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 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

TABLE OF CONTENTS

HCD-RG66T
1. SERVICING NOTES ................................................ 4
2. GENERAL
Location of Controls ....................................................... 5
Setting the Clock............................................................. 6
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 7
3-2. Top Case .......................................................................... 8
3-3. Loading Panel.................................................................. 8
3-4. CD Mechanism Deck (CDM58E-30BD60C)................. 9
3-5. Front Panel Section ......................................................... 9
3-6. Back Panel Section.......................................................... 10
3-7. MAIN Board ................................................................... 10
3-8. Base Unit (BU-30BD60C) .............................................. 11
3-9. DRIVER Board, MOTOR Board
and SENSOR (CD) Board .............................................. 11
3-10. Tape Mechanism Deck (TCM-230AWR41CS).............. 12
3-11. Belt .................................................................................. 12
3-12. SW Board, HEAD (A) Board
and HEAD (B) Board...................................................... 13
4. TEST MODE.............................................................. 14
5. MECHANICAL ADJUSTMENTS....................... 18
6. ELECTRICAL ADJUSTMENTS
Deck section .................................................................... 18
CD Section ...................................................................... 21
7-23. Printed Wiring Boards
– PAD SWITCH/VOL Boards – ..................................... 44
7-24. Schematic Diagram
– PAD SWITCH/VOL Boards – ..................................... 45
7-25. Printed Wiring Boards
– MAIN TRANS/SUB-TRANS Boards –...................... 46
7-26. Schematic Diagram
– MAIN TRANS/SUB-TRANS Boards –...................... 47
7-27. IC Pin Function Description ........................................... 49
8. EXPLODED VIEWS
8-1. Panel Section ................................................................... 53
8-2. Front Panel Section ......................................................... 54
8-3. Chassis Section ............................................................... 55
8-4. CD Mechanism Deck Section
(CDM58E-30BD60C) ..................................................... 56
8-5. Base Unit Section (BU-30BD60C)................................. 57
8-6. Tape Mechanism Deck Section
(TCM-230AWR41CS) .................................................... 58
9. ELECTRICAL PARTS LIST ............................... 59
7. DIAGRAMS
7-1. Block Diagram – CD SERVO Section – ....................... 23
7-2. Block Diagram – TUNER/TAPE DECK Section – ...... 24
7-3. Block Diagram – MAIN Section – ................................ 25
7-4. Block Diagram – DISPLAY/KEY CONTROL/
POWER SUPPLY Section – ........................................... 26
7-5. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 27
7-6. Printed Wiring Board – BD Board – ............................. 28
7-7. Schematic Diagram – BD Board – ................................ 29
7-8. Printed Wiring Boards
– DRIVER/MOTOR/SENSOR (CD) Boards –.............. 30
7-9. Schematic Diagram
– DRIVER/MOTOR/SENSOR (CD) Boards –.............. 30
7-10. Printed Wiring Boards
– SW/HEAD (A)/HEAD (B) Boards – .......................... 31
7-11. Schematic Diagram – SW Board –................................ 32
7-12. Printed Wiring Boards – MAIN Board –....................... 33
7-13. Schematic Diagram – MAIN Board (1/4) – .................. 34
7-14. Schematic Diagram – MAIN Board (2/4) – .................. 35
7-15. Schematic Diagram
– MAIN (3/4)/HEAD (A)/HEAD (B) Boards –............. 36
7-16. Schematic Diagram – MAIN Board (4/4) – .................. 37
7-17. Printed Wiring Board – GAME IN Board –.................. 38
7-18. Schematic Diagram – GAME IN Board –..................... 39
7-19. Printed Wiring Boards
– POWER/SENSOR Boards –........................................ 40
7-20. Schematic Diagram
– POWER/SENSOR Boards –........................................ 41
7-21. Printed Wiring Boards
– PANEL/CD OPEN/CD SWITCH Boards – ................ 42
7-22. Schematic Diagram
– PANEL/CD OPEN/CD SWITCH Boards – ................ 43
3
HCD-RG66T
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.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick-up block. Therefore, when checking the laser diode emis­sion, observe from more than 30 cm away from the objectiv e lens.
LASER DIODE AND FOCUS SEARCH OPERATION CHECK
Carry out the “S curve check” in “CD section adjustment” and check that the S curve waveforms is output three times.
• MODEL IDENTIFICATION – Back Panel –
MODEL PART No.
E, Chilean and Peruvian models 4-237-780-0 Mexican and Argentina models 4-237-780-5
PART No.
[]
[]
4
LOCATION OF CONTROLS – Front Panel –
ALPHABETICAL ORDER A - D
CD eg CD SYNC HI-DUB qf DECK A A wh DECK B A qh DIMMER 9 DIRECTION q; DISC 1~3 4 DISC SKIP EX-CHANGE 5 Disc tray 3 DISPLA Y 7
E - L
EDIT q; EFFECT ON/OFF rs ENTER ra FM MODE qs
1
23 4
SECTION 2

GENERAL

GAME ea GAME EQ rd GAME INPUT wd GAME MIXING wl GROO VE rf IR (receptor) 2
M - Q
MD (VIDEO) es MIC wa MIC LEVEL w; MOVIE EQ ek MUSIC EQ eh OPEN/CLOSE Z 6 P FILE r; PHONES (jack) ql PLAY MODE e;
56
HCD-RG66T
This section is extracted from instruction manual.
R - Z
REC P AUSE/ST ART qg REPEA T qs SPECTRUM 8 SURROUND el TAPE A/B ed TUNER/BAND ef TUNER MEMORY e; VOLUME qa
BUTTON DESCRIPTIONS
@/1 1 hH ws x qd X wk > qj . wg M/+ qk m/– wf v/V/b/B ej
eg
ed
ea
ef
es
e; wl wk
wh
wg
X
W
7
8
9
0
K
L M
O
qh
qj qk
qlw;waws
rf
N
rdrs
ek
ejeh
el
r;
ra
5
HCD-RG66T
– Back Panel –
A
B C
1 ANTENNA terminal 2 CD DIGITAL OUT OPTICAL terminal 3 MD/VIDEO (AUDIO) IN jack 4 VIDEO OUT jack 5 FRONT SPEAKER terminal 6 VOLTAGE SELECTOR switch (E model)
F
D
Remote Control
ALPHABETICAL ORDER
A - M
CD ql CLEAR 7 CLOCK/TIMER SELECT 2 CLOCK/TIMER SET 3 D.SKIP 9 ENTER qd EFFECT ON/OFF qf GAME w; MD (VIDEO) q;
P - Z
PRESET – wd PRESET + wf PRESET EQ qj P FILE qh SURROUND qs SLEEP 1 TAPE A/B qa TUNER/BAND qk TUNING – wa TUNING + ws VOL +/– 8
BUTTON DESCRIPTIONS
@/1 4 hH wg X 5 x 6 . wd > wf m wa M ws v/V/b/B qg
Y
X W V U
T S R
qj
qh
E
ABC
D E
6 7
8 9
q; qa
qd
qf
qg

Setting the clock

1
Turn on the system.
2
Press CLOCK/TIMER SET on the remote.
When you set the time for the first time, proceed to step 5.
3
Press V or v repeatedly to select CLOCK SET.
4
Press ENTER.
5
Press V or v repeatedly to set the hour.
6
Press ENTER.
7
Press V or v repeatedly to set the minute.
8
Press ENTER.
The clock starts functioning.
Tip
If you have made a mistake or want to change the time, start over from step 2.
Note
The clock settings are canceled when you disconnect the power cord or if a power failure occurs.
6
• This set can be disassembled in the order shown below.

3-1. DISASSEMBLY FLOW

SET
3-2. TOP CASE
(Page 8)
3-3. LOADING PANEL
(Page 8)
3-4. CD MECHANISM DECK
(CDM58E-30BD60C) (Page 9)
HCD-RG66T
SECTION 3

DISASSEMBLY

3-5. FRONT PANEL SECTION
(Page 9)
3-6. BACK PANEL SECTION
(Page 10)
3-7. MAIN BOARD
(Page 10)
3-10.TAPE MECHANISM DECK
(TCM-230AWR41CS) (Page 12)
3-11.BELT
(Page 12)
3-12.SW BOARD,
HEAD (A) BOARD AND HEAD (B) BOARD (Page 13)
3-8. BASE UNIT (BU-30BD60C)
(Page 11)
3-9. DRIVER BOARD,
MOTOR BOARD AND SENSOR (CD) BOARD (Page 11)
7
HCD-RG66T
)
Note: Follow the disassembly procedure in the numerical order given.

3-2. TOP CASE

two screws (case 3 TP2)
4
6
side panel (L)
q;
top
case
5
(BVTP 3
9
two screws
×
10)
7
two screws
(BVTP 3
×
9
3
side panel (R)
10)
8
two screws
(BVTP 3
×
12)
4
screw (case 3TP2)
3-3. LOADING PANEL
4

loading panel

3
four claws
2
two
screws
(BVTP 3
1
three screws (case 3 TP2
×
10)
2
Pull-out the disc table.
8
–BOTTOM VIEW– CD mechanism deck (CDM58E-30BD60C)
1
Turn the pulley in the direction of the arrow.
Front panel side
)
3-4. CD MECHANISM DECK (CDM58E-30BD60C)
5

CD mechanism deck (CDM58E-30BD60C)

3
screw
× 10)
(BVTP 3
1
wire (flat type) (21 core)
2
connector (
CN202)
HCD-RG66T
(CN201
3-5. FRONT PANEL SECTION
4
connector
CN401)
(
2
connector
CN781)
(
1
wire (flat type) (17 core)
(CN304)
2
connector
CN783)
(
3
screw (BVTP 3
× 10)
3
four
(BVTP 3
screws
× 10
2
connector (
2
connector (
5

front panel section

)
CN1)
CN2)
9
HCD-RG66T
)
)
3-6. BACK PANEL SECTION
5
connector (CN973)
1
wire
(flat type) (11core)
(CN702)
5
connector
5
connector
4
2
screw
(BVTP 3
(CN974)
connector
3
sensor board
×
10)
(CN976)
(CN701)
7

back panel section

6
screw
(BVTP 3
6
three
(BVTP 3
6
four
(BVTP 3
×
10)
screws
×
screws
×
10)
10
3-7. MAIN BOARD
3
two
claws
5
connector
claw
(CN891)

main board

10
2
two
(CN502, CN503
1
two screws (BVTP 3
4
main board
connectors
×
10)
)
3-8. BASE UNIT (BU-30BD60C)
qs
two insulators (BU-30)
2
holder (BU) (BU-30) assy
qd

base unit (BU-30BD60C)

qa
1
screw (PTPWH M2.6)
qs
two insulators (BU-30)
q;
screws (DIA. 12)
HCD-RG66T
8
two stoppers (BU)
7
two screws (BVTP 2.6
6
BD board
5
rivet
×
8)

3-9. DRIVER BOARD, MOTOR BOARD AND SENSOR (CD) BOARD

qs
qd
3
wire (flat type) (8 core)
tray
(CN702)
screw (PTPWH 2.6
qf
screw (BVTP 2.6
0
×
motor board
7
×
8)
8)
6
two screws (BVTP 2.6
5
8
wire (flat type) (8 core)
Remove the two solderings of motor.
9
×
8)
(CN721)
connector
qg
sensor
9
two
screws (PTPWH M2.6
4
wire (flat type) (16 core)
3
wire (flat type) (21 core)
(CN722)
(CN101)
(CD) board
(CN102)
4
driver board
1
s
crew (BVTP 2.6
qa
Pull out the disc table.
×
2
8)
11
HCD-RG66T
)
)
3-10. TAPE MECHANISM DECK (TCM-230AWR41CS)
8
tape mechanism deck
(TCM-230AWR41CS)
3
2
five
screws
(BVTP 2.6
2
two
screws
(BVTP 2.6
×
8)
×
8)
3-11. BELT
1
knob (mic)
5

belt

(FR)
6
two
(P 2.6
4
belt
screws
×
3)
(capstan B)
4
two
screws
(BVTP 2.6
3
belt
(capstan C)
×
7
8)
shield plate (TC
5
game in board
2
motor assy
(M901)
4
belt
(capstan B)
(capstan
12
1
two
screws
(PS 2.6
×
5
belt
(FR)
5)
3-12. SW BOARD, HEAD (A) BOARD AND HEAD (B) BOARD
2
five claws
3
SW board
1
Remove the four solders.
HCD-RG66T
5
head (A) board
4
screw (PTT 2
×
7
4)
6
head (B) board
screw (PTT 2
×
4)
13
HCD-RG66T
SECTION 4

TEST MODE

[GC TEST MODE]
• This mode is used to check the fluorescent indicator tube, LED, model, destination software version, volume, key and VACS level.
Procedure:
1. Press three buttons x , [ENTER], and [DISC 2] simultaneously.
2. LEDs and fluorescent indicator tube are all turned on.
3. When you want to enter the software version display mode,
press [DISC 1]. The model and destination are displayed.
4. Each time [DISC 1] is pressed, the display changes starting
from MC version, GC version, CD version, CDDM version, CDMA version, CDMB version, BDA version, BDB version, ST version, T A version, TM version and TC v ersion in this order, and returns to the MC version display.
5. When [DISC 3] is pressed while the version numbers are being
displayed except model and destination, year, month and day of the software creation appear. When [DISC 3] is pressed again, the display returns to the software version display . When [DISC 1] is pressed while year, month and day of the software creation are being displayed, the year, month and day of creation of the software versions are displayed in the same order of version display .
6. Press [DISC 2] button, and the key check mode is activated.
7. In the key check mode, the fluorescent indicator tube displays
“K0 V0”. Each time a button is pressed, “K” value increases. However, once a button is pressed, it is no longer taken into account. “V” value increases like 1, 2, 3 ... if rotating [VOLUME] knob in “+” direction, or it decreases like 0, 9, 8 ... if rotating in “–” direction.
8. Also when [DISC 3] is pressed after lighting of all LEDs and
fluorescent indicator tubes, value of VACS level appears.
9. T o release this mode, press three buttons in the same manner as
step 1, or disconnect the power cord.
[MC TEST MODE]
• This mode is used to check operations of the respective sections of Amplifier, Tuner , and Tape.
Procedure:
* To enter MC Test Mode
1. Press three buttons of x , [ENTER] and [DISC 3] simultaneously.
2. The messages MUSIC, MOVIE, GAME and P FILE flash on
the fluorescent indicator tube. The input FUNCTION is changed to VIDEO.
* Tape function
1. When a tape is inserted in tape deck B and recording is started, the input source function selects VIDEO automatically.
[CD SYNC HI-DUB] button is pressed during recording
When in function, ALC is turned on.
2. When x button is pressed to stop recording, the tape deck B is selected and tape is rewound, tape is rew ound using – m button, tape is stops at around the record-starting position and playback of the recorded portion of the tape is started. If the [REC PAUSE/
START] button is pressed for a pause and pressed again to resume
recording, when tape deck B is rewound, tape deck B will be rewound until the position where the pause is applied.
3. When [CD SYNC HI-DUB] button is pressed during playback of tape deck B, either normal speed or high speed can be selected by this button.
* AMS Test Mode
1. Select the function “TAPE A” or “TAPE B”.
2. Select the loop and relay by pressing the [DIRECTION] button. Insert a test tape AMS-110A or AMS-120 to selected tape deck.
3. Press the [SPECTRUM] button to enter the AMS test mode.
4. After a tape is rewound first, the FF AMS is checked, and the mechanism is shut off after detecting the AMS signal twice.
5. Then the REW AMS is checked and the mechanism is shut off after detecting the AMS signal twice.
6. When the check is complete, a message of either OK or NG appears.
* To release MC Test mode.
1. To release this mode, press the ?/1 button.
2. The cold reset is enforced at the same time.
[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 x , [ENTER], and ?/1 simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously, and the set is reset.
[VACS ON/OFF MODE]
• This mode is used to switch ON and OFF the VACS (Variable
Attenuation Control System).
* Check of Amplifier
1. When v button is pressed, GEQ increases to its maximum and a message “GEQ MAX” appears.
2. When V button is pressed, GEQ decreases to its minimum and a message “GEQ MIN” appears.
3. When b or B button is pressed, GEQ is set to flat and a message “GEQ FLAT” appears.
4. When the [VOLUME] knob is turned clockwise even slightly, the sound volume increases to its maximum and a message “VOLUME MAX” appears for two seconds, then the display returns to the original display.
5. When the [VOLUME] knob is turned counter-clockwise even slightly, the sound volume decreases to its minimum and a message “VOLUME MIN” appears for two seconds, then the display returns to the original display.
* Check of clock frequency
1. T o check the frequency of clock used to run the time in the unit, the clock output is available at IC501 pin el (CLOCK-OUT) on the MAIN board only during MC test mode.
2. The frequency is 32.768 kHz or so.
14
Procedure:
1. Press ?/1 button to turn the set ON.
2. Press the [ENTER] and [GAME MIXING] buttons simultaneously . The message “VACS OFF” or “VACS ON” appears.
[TUNER STEP CHANGE]
• A step of AM channels can be changed over between 9 kHz and
10 kHz.
Procedure:
1. Press ?/1 button to turn the set ON.
2. Select the function “TUNER”, and press [TUNER/BAND] button to select the BAND “AM”.
3. Press ?/1 button to turn the set OFF.
4. Press [ENTER] and ?/1 buttons simultaneously, and the display of fluorescent indicator tube changes to “ AM 9k STEP” or “ AM 10k STEP”, and thus the channel step is c hanged ov er.
HCD-RG66T
[CD SERVICE MODE]
• This mode can run the CD sled motor freely. Use this mode, for instance, when cleaning the optical pick-up.
Procedure:
1. Press ?/1 button to turn the set ON.
2. Select the function “CD”.
3. Press three buttons x , [ENTER] , and [OPEN/CLOSE] si-
multaneously.
4. The CD service mode is selected.
5. With the CD in stop status, press M + button to move the
optical pick-up to outside track, or press – m button to inside track.
6. To release this mode, press the ?/1 button.
[AGING MODE]
This mode can be used for operation check of CD section and tape deck section. CD section and tape deck section work in parallel.
If an error occurred: The aging operation stops only an error occurred sections and display then status.
If no error occurs: The aging operation continues repeatedly.
Procedure:
1. Press the ?/1 button to turn the power ON, and press the [CD]
button to select the function “CD”.
2. Set discs on all trays, and set tapes into the decks A and B
respectively.
3. Press the [PLAY MODE] b utton to set the “ ALL DISCS” mode,
and press the [REPEAT] button to “REPEAT” off.
4. Press three buttons of x , [ENTER], and [EX-CHANGE/DISC
SKIP] simultaneously.
5. Aging operations of CD and tape are started at the same time.
6. To release this mode, press the
power code to turn the power OFF.
1. Display at the Aging Mode
Display operating state of CD section and tape deck section alternately. If an error occurred, stop display which that section.
2. CD Section
The sequence during the aging mode is following as below. Display at the aging mode is the same as the normal operation.
?/1 button or disconnect the
Aging mode sequence (CD section) :
Start (from disc 1)
Disc chucking
TOC read
Play first track for 2 seconds
Play last track for 2 seconds
EX-change open/close
Open the disc tray
Disc skip
Close the tray
Change the next disc.
Display at an error occurred (Error display mode)
Procedure:
1. Press three buttons of
x , [ENTER], and [DISC 1] simultaneously
to enter the error display mode.
2. It displays of total error.
3. Each time the
m or M
+
button is pressed, display change
as below.
4. To clear the error record, operate the cold reset. (Refer to the “MC COLD RESET”)
5. To release this mode, press the ?/1 button or disconnect the power plug to turn the power OFF.
Display of total error
m
Button
M
+
Button
Display of Mechanical errors
m
Button
Display of no disc errors
M
+
Button
15
HCD-RG66T
1) Display of total error
Display
EMC**EDC**
EMC**: The number of mechanical error. EDC**: The number of no disc error after chucking the disc.
2) Display of mechanical errors
Display
M*$$%%&&##00
M*: The number of mechanical error (“00” is latest one)
(Press the . or > button to changes next error display)
$$: Not used %%: Loading error (Second figure is not used)
D: The error in the midst of close at the except mechanical
trouble.
E: The error in the midst of open at the except mechanical
trouble.
C: The error in the midst of chucking up at the except
mechanical trouble.
F: The error in the midst of chucking down at the except
mechanical trouble.
&&: Loading error
01: The error in the midst of chucking up. 02: The error in the midst of chucking down. 03: Time-out of EX-open. 05: Time-out of EX-close.
##: Not used
3) Display of no disc errors
Display
D*$$%%&&##00
3. Tape Deck Section
The sequence during the aging mode is following as below. If an error occurred, stop display that step.
Aging mode sequence (Tape deck section) :
Rewind the tape A and B
“TAPE A AG-1”
Shut off
FWD play the tape A
“TAPE A AG-2”
2 minutes
Fast forward the tape A
“TAPE A AG-3”
Shut off or 20 seconds
REV play the tape A
“TAPE A AG-4”
2 minutes
Rewind the tape A
“TAPE A AG-5”
Shut off
FWD play the tape B
“TAPE B AG-2”
2 minutes
Fast forward the tape B
“TAPE B AG-3”
Shut off or 20 seconds
REV play the tape B
“TAPE B AG-4”
2 minutes
D*: The number of mechanical error(“00” is latest one)
(Press the
. or > button to changes next error display)
$$: Error type
01: Focus error 02: GFS error 03: Set up error
%%: Not used &&:
00: No disc judgment without chucking retry. 01: No disc judgment after chucking retry.
##: The state when judged no disc error
01: Stop 02: Set up 03: TOC read 04: Access 05: Play 06: Pause 07: Manual search (Play) 08: Manual search (Pause)
16
Rewind the tape B
“TAPE B AG-5”
Shut off
Note: “TAPE * AG-*” is display of each step.
[CD REPEAT 5 LIMIT OFF MODE]
Number of repeat for CD playback is 5 times when the repeat mode is “REPEA T”. This mode enables CD to repeat playback for limitless times.
Procedure:
1. Press the ?/1 button to turn the power on, and press the [CD] button to select the function “CD”.
2. Press three buttons of x , [REPEAT], and [CD] simultaneousl y to enter the CD repeat 5 limit off mode and display “REPEAT OFF”.
3. To release this mode, operate the cold r eset. (Refer to the “MC COLD RESET”)
[CD SHIP MODE (MEMORY CLEAR) ]
• This mode moves the optical pick-up to the position durable to vibration. Use this mode when returning the set to the customer after repair.
Procedure:
1. Set to the standby state.
2. Press three buttons x , [ENTER] and [GAME] simultaneously.
3. After the “STANDBY” display blinks, a message “LOCK” is
displayed on the fluorescent indicator tube, and the CD ship mode is set.
[CD SHIP MODE (NO MEMORY CLEAR) ]
• This mode moves the optical pick-up to the position durable to vibration. Use this mode when returning the set to the customer after repair.
Procedure:
1. Set to the standby state.
2. Press the [CD] and ?/1 buttons simultaneously.
3. After the “STANDBY” display blinks, a message “LOCK” is
displayed on the fluorescent indicator tube, and the CD ship mode is set.
HCD-RG66T
17
HCD-RG66T
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 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
3.06 N m to 6.96 N m 31 to 71 g cm
(0.43 – 0.98 oz inch)
0.19 N m to 0.58 N m
2 to 6 g cm
(0.02 – 0.08 oz inch)
3.06 N m to 6.96 N m 31 to 71 g cm
(0.43 – 0.98 oz inch)
0.19 N m to 0.58 N m
2 to 6 g cm
(0.02 – 0.08 oz inch)
6.96 N m to 14.02 N • m 71 to 143 g cm
(0.98 – 1.99 oz inch)
9.80 N m
100 g or more
(3.53 oz or more)
9.80 N m
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 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.
• Test Tape
Tape Signal Used for
P-4-A100 10 kHz, –10 dB Azimuth Adjustment
WS-48B 3 kHz, 0 dB Tape Speed 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
1
(L-CH)
3
(R-CH)
Pin
MAIN board CN301
2
(GND)
Pin
level meter
+ –
18
HCD-RG66T
e
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.
Output level
within 1dB
L-CH peak
R-CH peak
within 1dB
Screw position
L-CH peak
Screw position
R-CH peak
3. Mode: Playback
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
1
pin
3
2
oscilloscop
V
wrong
H
°
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
[CD SYNC HI-DUB] button.
Procedure:
1. Press ?/1 button to turn the set ON.
2. Press three buttons x , [ENTER] and [DISC 3] simultaneously. To release from the test mode, press the ? /1 button.
Mode: Playback
set
MAIN board CN301
1
(L-CH)
Pin
3
(R-CH)
Pin
MAIN board CN301 Pin
frequency counter
+
2
(GND)
(WS-48B)
test tape WS-48B (3 kHz, 0 dB)
1. Insert the WS-48B into the deck B.
2. Press the hH button on the deck B.
3. Press the [CD SYNC HI-DUB] button in playback mode. Then at HIGH speed mode.
4. Adjust RV1001 on the SW board so that frequency counter reads 6,000 ± 180 Hz.
5. Press the [CD SYNC HI-DUB] button. Then back to NORMAL speed mode.
6. Adjust RV1002 on the SW board so that frequency counter reads 3,000 ± 90 Hz.
Adjustment Location: SW board
Sample Value of Wow and Flutter: 0.3% or less W. RMS (JIS)
4. After the adjustments, apply suitable locking compound to the pats adjusted.
Adjustment Location: Playback Head (Deck A).
Record/Playback/Erase Head (Deck B).
forward
reverse
19
HCD-RG66T
REC BIAS ADJUSTMENT DECK B
Procedure:
In the MC test mode, the “REC memory mode” is convenient for this adjustment. In the REC memory mode , when the REC starts the input signal FUNCTION is switched to VIDEO automatically. When the REC stops, the tape returns near to the recording start position.
1. Press MD (VIDEO) 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 [REC PAUSE/START] button, press [REC PAUSE/
START] button, then recording start.
4. Mode: Record
MAIN board MD/VIDEO (AUDIO) IN (J750)
1) 315 Hz
2) 10 kHz
AF OSC
attenuator
5. Mode: Playback
recorded portion
50 mV (–23.8 dB)
 
600
MAIN board CN301
1
Pin
3
Pin
set
MAIN board CN301 Pin
(L-CH) (R-CH)
2
blank tape CN-123
set
level meter
+
(GND)
4. Mode: Record
MAIN board MD/VIDEO (AUDIO) IN (J750)
AF OSC
315 Hz, 50 mV (–23.8 dB)
attenuator
600
blank tape CS-123
set
5. Mode: Playback
MAIN board
recorded portion
CN301
1
Pin
3
Pin
set
MAIN board CN301 Pin
(L-CH) (R-CH)
2
level meter
+
(GND)
6. Confirm the play back signal recorded in step 3 becomes adjustable level as follows. If these levels are not adjustable level, adjust the RV301 (L­CH) and RV351 (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
– SW BOARD (Component Side) –
TAPE SPEED
ADJUSTMENT
(NORMAL) (HIGH)

6. Confirm the playback signal recorded in step 3 becomes adjustable level as follows. If these levels are not adjustable level, adjust the RV304 (L­CH) and R V354 (R-CH) on the MAIN 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: MAIN board
REC LEVEL ADJUSTMENT DECK B
Procedure:
In the MC test mode, the “REC memory mode” is convenient for this adjustment. In the REC memory mode , when the REC starts the input signal FUNCTION is switched to VIDEO automatically. When the REC stops, the tape returns near to the recording start position.
1. Press MD (VIDEO) 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 [REC PAUSE/START] button, press [REC PAUSE/
START] button, then recording start.
RV1002
MAIN BOARD (Component Side) –
RV1001
REC BIAS ADJUSTMENT
CN1001
REC LEVEL
ADJUSTMENT
CN301
31
(R-CH)
RV351
RV304 RV354
(L-CH)
(L-CH)
RV301
(R-CH)


20
HCD-RG66T
e
)

CD SECTION

Note:
1. CD Block is basically designed to operate without adjustment. Therefore, check each item in order given.
2. Use LUV-P01 (4-999-032-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10M 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.
S-CURVE CHECK
Oscilloscope
BD board
TP(FEO) TP(DVC)
Procedure :
1. Connect an oscilloscope to TP (FEO).
2. Connect between TP (FEI) and TP (DVC) ( 1.65 V) by lead wire.
3. Turn the power ON.
4. Load a disc (LUV-P01) and actuate the focus search. (In consequence of open and close the disc tray, actuate the focus search)
5. Confirm that the oscilloscope waveform (S-curve) is symmetrical between A and B. And confirm peak to peak level within 2 ± 0.5 Vp-p.
S-curve waveform
symmetry
A
±
within 2
B
0.5Vp-p
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 : 0.65
0.15Vp-p (RFDC)
1.1
±
0.4Vp-p (RFAC)
E-F BALANCE (1 TRACK JUMP) ADJUSTMENT
oscilloscop
BD board
TP(TEO) TP(DVC)
Procedure :
1. Connect an oscilloscope to TP (TEO) and TP (DVC).
2. Turn the power ON.
3. Load a disc (LUV-P01) and playback the number nine track.
4. Press the hH button. (Becomes the 1 track jump mode.)
5. Confirm that the level B and A (DC voltage) on the oscilloscope waveform.
1 track jump waveform
DVC
level=1.0 ±0.5Vp-p
B
symmetry
center of waveform
A (DC voltage
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.
Take sweep time as long as possible and light up the brightness to obtain best waveform.
RF LEVEL CHECK
BD board
TP(RFDC) TP(RFAC)
TP(DVC)
Procedure :
1. Connect an oscilloscope CH1 to TP (RFDC) and CH2 to TP (RF AC).
2. Turn the power ON.
3. Load a disc (LUV-P01) and playback.
4. Confirm that oscilloscope waveform is clear and check if RF signal level is correct or not.
oscilloscope
6. Adjust RV101 on the BD board so that the center of waveform becomes the same voltage of DVC. (i.e. A=0V)
Connecting and Adjustment Location: BD board
21
HCD-RG66T
Connecting and Adjustment Location:
BD BOARD (Component Side) –
TP
TP
(DVC)
(FEO)
TP
(RFAC)
TP
(FEI)
TP
(RFDC)
TP
(TEO)
BD BOARD (Conductor Side) –
RV101
E-F BALANCE
(1 TRACK JUMP)
ADJUSTMENT
22
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