• This set is the tuner, deck,Video CD and
amplifier section in LBT-V3900/V5900.
Manufactured under license from Dolby Laboratories
Licensing Corporation.
“DOLBY” and the double-D symbol a are trademarks
of Dolby Laboratories Licensing Corporation.
Photo : HCD-V5900
CDCD Mechanism TypeCDM37L-5BD21AL
SectionBase Unit NameBU-5BD21AL
Tape deckModel Name Using Similar MechanismHCD-V4800
SectionT ape Transport Mechanism T ypeTCM-220WR2
E Model
Model Name Using Similar MechanismHCD-V4800
Optical Pick-up NameKSS-213D/Q-NP
Amplifier section
(HCD-V3900)
The following measured at AC 120/240 V, 50 Hz
DIN power output (Rated)
100 + 100 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (Reference)
120 + 120 watts
(6 ohms at 1 kHz, 10 % THD)
The following measured at AC 220 V, 50 Hz
DIN power output (Rated)
90 + 90 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (Reference)
105 + 105 watts
(6 ohms at 1 kHz, 10 % THD)
Peak music power output (Reference)
1,500 watts
(HCD-V5900)
The following measured at AC 120/240 V, 50 Hz
DIN power output (Rated)
120 + 120 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (Reference)
140 + 140 watts
(6 ohms at 1 kHz, 10 % THD)
The following measured at AC 220 V, 50 Hz
DIN power output (Rated)
Max. 44.6 µW*
* This output is the value measured at a
distance of 200 mm from the objective
lens surface on the Optical Pick-up Block
with 7 mm aperture.
Wavelength
780 – 790 nm
Frequency response
2 Hz – 20 kHz (±0.5 dB)
Signal-to-noise ratio
More than 90 dB
Dynamic range
More than 90 dB
Video Color system format:
NTSC, PAL
— Continued on next page —
MICROFILM
Tape player section
Recording system
4-track 2-channel stereo
Frequency response (DOLBY NR OFF)
60 – 13,000 Hz (±3 dB), using a Sony TYPE I cassette
60 – 14,000 Hz (±3 dB), using a Sony TYPE II cassette
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
87.5 – 108.0 MHz (50 kHz step)
Antenna
FM wire antenna
Antenna terminals
75 ohm unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
531 – 1,602 MHz (with the tuning interval set at 9 kHz)
530 – 1,710 MHz (with the tuning interval set at 10 kHz)
Antenna
AM loop antenna, External antenna terminals
Intermediate frequency
450 kHz
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.
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.
General
Power requirements110 – 120 V or 220 – 240 V AC, 50/60 Hz
adjustable with voltage selector
Power consumption(HCD-V3900) 245 watts
(HCD-V5900) 255 watts
Dimensions (w/h/d)Approx. 355 × 425 × 435 mm incl.
projecting parts and controls
Mass(HCD-V3900) Approx. 16.3 kg
(HCD-V5900) Approx. 16.8 kg
Supplied accessoriesAM loop antenna (1)
Remote (1)
RM-SV808S (LBT-V3900)
RM-SV4800S (LBT-V5900)
Size AA batteries (2)
FM wire antenna (1)
Speaker cords (2)
Video cable (1)
Design and specifications are subject to change without notice.
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.
DECK Section ··································································· 18
CD Section········································································· 21
VIDEO Section ··································································22
— AMP/KEY CONTROL Section —·······························69
6-25.Schematic Diagram — POWER Section —······················ 71
6-26.Printed Wiring Board — POWER Section —··················· 73
6-27.IC Pin Function Description ·············································· 74
6-28.IC Block Diagrams ···························································· 83
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 objective 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.
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.
8.ELECTRICAL PARTS LIST ··································97
— 3 —
– FRONT PANEL –
SECTION 1
GENERAL
$¢
%ª ^º
%¶ %•
%§
%¢ %∞
%£
%¡ %™
$ª$•%º
$§
$¶
$∞
$£
$™
$¡
$º
1234 67
A
5
B
89
!¡
!™
!£ !¢
!∞
!§
!¶
!•
!ª @º
@¡ @™ @£
@¢ @∞
@§ @¶
@ª #º
#¡ #™ #£
@•
A
11/u button
2DISPLAY/DEMO button
3SPECTRUM ANALYZER button
4ENTER/NEXT button
5TUNER MEMORY button
6TUNING MODE button
7TUNER/BAND button
8TUNING – button
9TUNING + button
!¡STEREO/MONO button
!™EFFECT button
!£GROOVE button
!¢FUNCTION button
!∞VOLUME knob
!§SUPER WOOFER button
!¶SUPER W MODE
!•GEQ button
!ªDECK B ª (play) button
@ºDECK B · (play) button
@¡DECK B p (stop) button
@™DECK B 0 (backward) button
@£DECK B ) (forward) button
@¢DECK B P (pause) button
@∞DECK B r REC button
^¡^™^£^¢
^•^∞
^¶^§
@§H SPEED DUB button
@¶CD SYNC button
@•DECK B 6 EJECT button
@ªCD 6 OPEN button
#ºCD · (play) button
#¡DISK SKIP button
#™CD P (pause) button
#£CD p (stop) button
#¢CD ) (forward) button
#∞≠ AMS ± knob
#§CD 0 (backward) button
#¶CD FLASH button
#•CD LOOP button
#ªCD NON-STOP button
$ºDISC 1 button
$¡DISC 2 button
$™DISC 3 button
$£DISC 4 button
$¢DISC 5 button
$∞DECK A 6 EJECT button
$§DIRECTION button
$¶DOLBY NR button
$•DECK A p (stop) button
$ªDECK A 0 (backward) button
#¢
#∞#§#• #¶#ª
&™^ª
B
&¡
&º
%ºDECK A ) (forward) button
%¡DECK A ª (play) button
%™DECK A · (play) button
%£PHONES jack
%¢MIC1, MIC2 jack
%∞MIC LEVEL, ECHO LEVEL knobs
%§SLEEP button
%¶DAILY 1 button
%•DAILY 2 button
%ªt / CLOCK SET button
^ºREC button
^¡WAVE button
^™SURROUND button
^£P FILE MEMORY button
^¢GEQ CONTROL button
^∞ENTER button
^§KEY CONTROL (n) button
^¶KEY CONTROL (˜) button
^•KARAOKE PON/MPX button
^ªPLAY MODE button
&ºREPEAT button
&¡EDIT button
&™1/ALL DISCS button
— 4 —
– BACK PANEL –
⁄‚⁄
⁄‚fl
⁄‚fi
⁄‚‹
⁄‚‹
IN
OUT
⁄⁄‚ ⁄‚·
⁄‚°
⁄‚⁄ANTENNA terminal
⁄‚¤VOLTAGE SELECTOR switch (E, AR model)
⁄‚‹SPEAKER terminal
⁄‚fiVIDEO (AUDIO) jack
⁄‚flPHONO jack
⁄‚°SYSTEM SELECT
⁄‚·S VIDEO OUT
⁄⁄‚VIDEO OUT
⁄‚¤
— 5 —
This section is extracted
from instruction manual.
— 6 —
from instruction manual.
This section is extracted
)
• This set can be disassembled in the order shown below.
SECTION 2
DISASSEMBLY
CASE
(Page 7)
Note: Follow the disassembly procedure in the numerical order given.
CD MECHANISM
DECK SECTION
(CDM37L-5BD21AL)
(Page 9)
PANEL (A)/(B)
SUB ASS’Y
(Page 11)
2-1. CASE
BASE UNIT
(BU-5BD21AL)
(Page 12)
DISC TABLE
(Page 12)
CAPSTAN MOTOR (M1)
(Page 14)
CASSETTE
LID ASS’Y
(Page 10)
3
case
BD BOARD
(Page 13)
1
screw
(case 3 TP2)
OPTICAL
PICK-UP
(KSS-213D/Q-NP)
(Page 13)
SLED
MOTOR (M102),
SPINDLE
MOTOR (M101)
(Page 13)
1
screw
(case 3 TP2)
1
two screws
(case 3 point)
— 7 —
2
seven screws
(BVTT 3
1
two screws
(case 3 point
×
6)
)
2-2. FRONT PANEL SECTION
1
3
front panel section
1
flat wire (11 core)
(CN206)
flat wire (21 core)
(CN205)
1
flat wire (17 core)
(CN102)
2
four screws
(BVTP 3 × 8)
2-3. MAIN BOARD
5
connector
(CN901)
3
power cord
4
back panel
2
fourteen screws
(BVTP 3
1
flat wire (13 core
(CN1)
8
MAIN board
IC201
×
8)
5
flat wire (13 core)
(CN202)
1
connector
(CN106)
5
connector
(CN203)
— 8 —
7
connector
(CN101)
6
two screws
(BVTP 3
×
8)
2-4. MAIN SECTION
)
3
two screws
(BVTP 3
×
8)
2
connector
(CN203)
1
flat wire (13 core)
(CN202)
4
main section
3
eight screws
(BVTP 3
3
two screws
(BVTP 3
×
8
×
8)
2-5. CD MECHANISM DECK SECTION (CDM37L-5BD21AL)
2
five screws
(BVTP 3 × 8)
3
CD mechanism
deck section
(CDM37A-5BD21AL)
4
flat wire (29 core)
(CN101)
— 9 —
1
Open the clamp.
2-6. TAPE MECHANSM DECK SECTION (TCM-220WR2)
)
4
4
three screws
(BVTP 2.6
3
flat wire (21 core)
(CN601)
3
flat wore (11 core)
(CN1001)
×
8)
A
three screws
(BVTP 2.6
×
8)
5
Remove the tape mechanism
deck section (TCM-220WR2)
to derection of the arrow
A
.
2
Open the
cassette lids.
2-7. CASSETTE LID ASS’Y
1
two springs
4
cassette lid ass y
1
Push the
two buttons.
3
two brackets
2
two screws
(BVTP 2.6 × 8
— 10 —
2-8. CD LID ASS’Y SECTION
)
)
5
connector
(CN671)
6
four screws
(BVTP 2.6
×
8)
7
CD lid ass y
4
connector
(CN661)
2
four screws
(BVTP 2.6
×
8
2-9. PANEL (A) / (B) SUB ASS’Y
3
two claws
3
two claws
1
connector
(CN642)
3
CD-B1 SW board
1
connector
(CN612)
2
four screws
(BVTP 2.6 × 8
4
panel (A) sub ass y
5
two claws
6
panel (B) sub ass y
— 11 —
5
two claws
2-10. BASE UNIT (BU-5BD21AL)
e
3
base unit
(BU-5BD21AL)
2
2-11. DISC TABLE
Note:
When the disc table is installed, adjust the positions
of roller cam amd mark ( as shown in the figure, then
set to the groove of disc table.
A
boss
1
screw
(BVTP 3 × 8)
2
bracket (BU)
1
screw
(BVTP 3 × 8)
1
yoke bracket
3
step screw
4
disc tabl
— 12 —
A
2-12. BD BOARD
)
1
two screws
(PTPWH M2.6
3
two springs
5
screw
(BVTP 2.6
6
×
6)
2
3
two springs
4
flat wire (16 core)
7
(S101)
(CN102)
BD board
×
8)
Removal
four solders.limit switch
1
two screws
(PTPWH M2.6
optical pick-up
section
×
6
2-13. OPTICAL PICK-UP (KSS-213D/Q-NP), SLED MOTOR (M102), SPINDLE MOTOR (M101)
3
optical pick-up (KSS-213D/Q-NP)
6
spindle motor
2
sled shaft
(M101)
1
claw
5
4
two screws
(P2
sled motor
(M102)
×
3)
— 13 —
2-14. CAPSTAN MOTOR (M1)
2
3
Removal the AUDIO board
to direction of the arrow A.
1
connector
(CN651)
four screws
(BTP 2.6
×
4)
A
7
Removal the capstan motor (M1)
to direction of the arrow B.
4
Break the soldering
of motor lead.
6
claw
B
5
two screws
(BTP 2.6
×
8)
8
Hang two belts.
— 14 —
SECTION 3
TEST MODE
MC COLD RESET
•The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning
the set to the customer.
Procedure:
1. Press three buttons GROOVE , ENTER/NEXT , and
DISC 1 simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously,
and the set is reset.
CD DELIVERY MODE
•This mode moves the 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 PLAY MODE 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 power
cord is plugged in and out.
Procedure:
1. Press three buttons GROOVE , ENTER/NEXT , and
DISC 2 simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously,
and the set is reset.
SLED SERVO MODE
•This mode can run the CD sled motor freely. Use this mode, for
instance, when cleaning the pick-up.
Procedure:
1. Select the function “CD”.
2. Press three buttons GROOVE , ENTER/NEXT , and
CD FLASH simultaneously.
3. The Sled Servo mode is selected, if “CD” is blinking on the
fluorescent indicator tube.
4. With the CD in stop status, press ) button in CD section to
move the pick-up to outside track, or 0 button to inside track.
5. To exit from this mode, perform as follows:
1) Move the pick-up to the most inside track.
2) Press three buttons in the same manner as step 2.
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 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.
Be sure not to change with carelessness.
LED AND FLUORESCENT INDICA TOR TUBE ALL LIT, KEY
CHECK MODE
Procedure:
1. Press three buttons GROOVE , ENTER/NEXT , and
DISC 3 simultaneously.
2. LEDs and fluorescent indicator tube are all turned on.
Press DISC 2 button, and the key check mode is activated.
3. In the key check mode, the fluorescent indicator tube displays
“K 1 J0 V0”. Each time a button is pressed, “K”value increases.
However, once a button is pressed, it is no longer taken into
account.
“J” value increases like 1, 2, 3 ... if rotating JOG dial knob in
“clock wise” direction, or it decreases like 0, 9, 8 ... if rotating
in “counter clock wise” 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.
SELF-DIAGNOSIS
This model has the self-diagnosis function for the video and audio
decoder sections.
Immediately after the power on, the self-diagnosis function searches
each operation of IC’s around the mechanism controller (IC701).
The LED (D701) on the VIDEO board indicates their results.
LED (D701) INDICATIONSYMPTOM
LightNo error
1 time blinking (Repeatedly)External RAM (S-RAM) error
(IC751)
2 times blinking (Repeatedly)Video decoder section error
(IC201)
3 times blinking (Repeatedly)Video RAM (D-RAM) error
(IC251)
4 times blinking (Repeatedly)Audio decoder section error
(IC201)
[VIDEO BOARD] (SIDE-A)
— 15 —
IC701
D701
IC771
IC201
IC901
VERSION CHECK MODE
Procedure:
1. Press three buttons GROOVE , ENTER/NEXT , and DISC 3
simultaneously.
2. LEDs and fluorescent indicator tube are all turned on.
Press DISC 1 button, and the version check mode is activated.
3. In the version check mode, the fluorescent indicator tube displays
version information as follows.
SPEC ASIA-2←
Press DISC 1↓
MC F/V V1.3
Press DISC 1↓ Press
VC F/V V1.4 DISC 1
Press DISC 1↓
GC S-V V1.0
Press DISC 1↓
LBT 715 VCD
4. T o exit from this mode, press three buttons in the same manner
as step 1, or disconnect the power cord.
AGING MODE
This mode can be used for operation check of CD section and tape
deck section.
•If an error occurred:
The aging operation stops.
•If no error occurs:
The aging operation continues repeatedly.
1. Aging Mode in CD Section
1-1. Operating Method of Aging Mode
1. Set discs in DISC 1 and DISC 3 trays.
2. Select the function “CD”.
3. Press three buttons GROOVE , ENTER/NEXT ,
and DISC 5 simultaneously.
4. The aging mode is activated, if a changer mark on the
fluorescent indicator tube is blinking.
5. In the aging mode, the aging is executed in a sequence given
in “1-2. Operation during Aging Mode”.
The aging continues unless an alarm occurred.
6. To exit from the aging mode, press 1/u button to turn the
set OFF.
•If a button other than buttons In CD section is pressed during
aging, the aging in the CD section is finished.
•To execute aging to the tape deck section successively,
press · button in the deck A.
“AGING” is displayed on the fluorescent indicator tube. (For
the aging in tape deck, see “2. Aging Mode in Tape Deck
Section”.
1-2. Operation during aging Mode
In the aging mode, the program is executed in the following
sequence.
1. The disc tray turns to select a disc. (For a disc selection
sequence, see Section 1-3.)
2. TOC of disc is read.
3. The pick-up accesses to the last track.
4. Steps 1 through 3 are repeated.
1-3. Disc Selection Sequence
•During the aging mode, discs are selected in the following
sequence:
Disc 1 → Disc 3
↑ ↓
Disc 3 ← Disc 1
2. Aging Mode in Tape Deck Section
2-1. Operating Method of Aging Mode
1. Load a commercially available 10-minute tape into the decks
A and B respectively.
(If a 10-minute tape is not available, another tape may be
used but a cycle time will be longer.)
2. Select the function “TAPE”.
3. Rewind tapes in advance by pressing 0 button
respectively on decks A and B.
4. Press three buttons GROOVE , ENTER/NEXT ,
and DISC 5 simultaneously.
5. Press · button on deck A. (This button triggers the aging
mode.)
6. The aging mode is activated if “AGING A” is displayed on
the fluorescent indicator tube.
7. In the aging mode, the aging is executed in a sequence given
in “2-2. Operation during Aging Mode”.
The aging continues unless an alarm occurred.
8. T o exit from the aging mode, press 1/u button to turn the
set OFF.
2-2. Operation during Aging Mode
In the aging mode, the program is executed in the following
sequence.
1. A tape on FWD side is played for one minute.
2. PAUSE STOP is made.
3. Recording is made for 3 minutes. (For the deck not having
the record function, the play is executed. In this case, ·
LED does not light up.)
4. FF is executed up to the end of tape.
5. A tape is reversed, and the tape on REV side is played for
one minute.
6. PAUSE STOP is made.
7. Recording is made for 3 minutes. (For the deck not having
the record function, the play is executed. In this case, ª
LED does not light up.)
8. FF is executed up to the end of tape.
9. Steps 1 through 8 are executed for the other deck.
10. Steps 1 through 9 are repeated unless an alarm occurred.
2-3. Deck Selection Sequence
•During the aging mode, decks are selected in the following
sequence:
Deck A (FWD) → Deck A (REV)
↑ ↓
Deck B (REV) ← Deck B (FWD)
— 16 —
VIDEO CD COLOR BAR MODE
On this mode, the data of the color bar signal as a picture signal and
the 1 kHz sine wave signal as a sound signal are output by the
mechanism controller (IC701) for the video CD signal check. When
measurement of the voltage and waveform on the VIDEO board,
perform it in this mode.
For reference, the color bar signal can be observed at J9001 (VIDEO
OUT) and the sound signal can be observed at J101 (VIDEO
(AUDIO) OUT) using an oscilloscope.
Procedure:
1. Turned power switch on.
2. Press the FUNCTION button to select the CD.
3. Connect the SL701 on the VIDEO board with solder.
4. After measuring, remove the soldering installed.
oscilloscope
E-F BALANCE MODE
Refer to the SECTION 6 ELECTRICAL ADJUSTMENTS page
21.
Procedure:
1. Turned power switch on.
2. Press the FUNCTION button to select the CD.
3. Connect the SL701 and SL703 on the VIDEO board with solder.
4. Press the · button in playback.
5. Press the REPEAT button, the tracking servo and sledding
servo are turned on or off.
6. When the servo is off, the counter on front panel will not be
changed.
7. After measuring, remove the soldering installed.
set
B
A
C
75
Ω
J9001 (VIDEO OUT)
H
+
–
A = 0.9 to 1.1 Vp-p
B = 0.678 to 0.75 Vp-p
C = 0.214 to 0.328 Vp-p
Fig. 1 Video CD Color Bar Signal Output from J9001
(VIDEO OUT)
[VIDEO BOARD] (SIDE-B)
SL703
SL702
SL701
IC751
IC251
— 17 —
SECTION 4
r
MECHANICAL ADJUSTMENTS
SECTION 5
ELECTRICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab:
record/playback head pinch roller
erase headrubber belts
capstanidlers
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
ModeTorque MeterMeter Reading
ForwardCQ-102C
Forward
Back Tension(0.026 – 0.082 oz•inch)
ReverseCQ-102RC
Reverse
Back Tension(0.026 – 0.082 oz•inch)
FF, REWCQ-201B
CQ-102C
CQ-102RC
36 to 61g•cm
(0.50 – 0.84 oz•inch)
2 to 6g•cm
36 to 61g•cm
(0.50 – 0.84 oz•inch)
2 to 6g•cm
61 to 143g•cm
(0.85 – 1.98 oz•inch)
DECK SECTION
0 dB=0.775 V
1. Demagnetize the record/playback head with a head
demagnetizer. (Do not bring the head demagnetizer close to
the erase head.)
2.Do not use a magnetized screwdriver for the adjustments.
3.After the adjustments, apply suitable locking compound to the
parts adjust.
4.The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
5.The adjustments should be performed in the order given in this
service manual. (As a general rule, playback circuit adjustment
should be completed before performing recording circuit
adjustment.)
6.The adjustments should be performed for both L-CH and Rch.
7.Switches and controls should be set as follows unless otherwise
specified.
8.Set to test mode. (Press key switch same time
GROOVE ENTER/NEXT and DISC 4 buttons.)
To exit from the test mode, press the 1/u button.
•Test Tape
TapeSignalUsed for
P-4-A10010 kHz, –10 dBAzimuth Adjustment
WS-48B3 kHz, 0 dBTape Speed Adjustment
P-4-L300315 Hz, 0 dBLevel Adjustment
• T ape Tension Measurement
ModeTension MeterMeter Reading
ForwardCQ-403Amore than 100 g (3.53 oz)
ReverseCQ-403Rmore than 100 g (3.53 oz)
Record/Playback Head Azimuth Adjustment
DECK ADECK B
Note: Perform this adjustments f or both dec ks .
Procedure:
1. Mode: Playback (FWD)
test tape
P-4-A100
(10 kHz, –10 dB)
set
MAIN board
CN207
3
(L-CH)
pin
1
(R-CH)
pin
MAIN board
CN207
pin
2
(GND)
level mete
+
–
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.
output
level
within
1 dB
within
1 dB
L-CH
peak
R-CH
Screw
position
peak
L-CH
peak
R-CH
peak
Screw
position
— 18 —
3. Mode: Playback (FWD)
e
e
+
–
set
test tape
P-4-L300
(315 Hz, 0 dB)
MAIN board
CN207 (pin
3
: L-CH)
(pin
1
: R-CH)
level meter
test tape
P-4-A100
(10 kHz, –10 dB)
set
pin
waveform of oscilloscope
in phase 45°90°135°180
MAIN board
CN207
pin
pin 2 (GND)
1
(R-CH)
good
3
(L-CH)
oscilloscop
V
wrong
Tape Speed Adjustment DECK A
Note:Start the Tape Speed adjustment as below after setting to the test
mode.
In the test mode, the tape speed is high during press the
H SPEED DUB button.
Procedure:
H
1. Turn the power switch on.
2. Press the GROOVE button, ENTER/NEXT button and
DISC 4 button simultaneously.
To exit from the test mode, press the 1/u button.
Mode: Playback (FWD)
test tape
WS-48B
(3 kHz, 0 dB)
°
set
frequency counter
+
–
4. Repeat steps 1 to 3 in playback (REV) mode.
5. After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location : Playback Head (Deck A)
Record/Playback Head (Deck B)
revers
forward
MAIN board
CN207 (pin
(pin
3
: L-CH)
1
:R-CH)
1. Insert the WS-48B into the deck A and the blank tape into the
deck B.
2. Press the r REC button and · button on the deck B. Then
the deck B is at recording mode.
3. Set the deck A to playback mode.
4. Press the H SPEED DUB button in playback mode.
Then at high speed mode.
5. Adjust RV652 on the AUDIO board so that frequency counter
reads 6,000 ± 180 Hz.
6. Press the H SPEED DUB button.
Then at normal speed mode.
7. Adjust R V651 on the AUDIO board so that frequency counter
reads 3,000 ± 90 Hz.
8. Frequency difference between deck A and deck B the beginning
of the tape should be within ± 1.5 %.
Adjustment Location: AUDIO board (See page 20)
Sample Value of Wow and Flutter: 0.3% or less W.RMS
(WS-48B)
Playback level Adjustment DECK ADECK B
Procedure:
Mode: Playback (FWD)
Deck A is RV311 (L-CH) and RV411 (R-CH), Deck B is RV301
(L-CH) and RV401 (R-CH) so that adjustment within adjustment
level as follows.
Adjustment Level:
CN207 PB level: 301.5 to 338.3 mV (– 8.2 to – 7.2 dB) level
difference between the channels: within ± 0.5 dB
Adjustment Location: AUDIO board (See page 20)
— 19 —
Record bias Current AdjustmentDECK B
r
r
5
Procedure:
1. Mode: Record
Adjustment and Connection Location:
[AUDIO BOARD] (Conductor Side)
pin 6 (L-CH) of IC1501 on the MAIN board.
pin
#¶
(R-CH) of IC1501 on the MAIN board.
1) 315 Hz
2) 10 kHz
AF OSC
attenuator
pin 2 (GND) of CN207 on the MAIN board.
50 mV (–23.8 dB)
Ω
600
set
blank tape
CS-123
2. Mode: Playback
recorded
portion
set
MAIN board
CN207 (pin
(pin
3
1
: L-CH)
: R-CH)
level mete
+
–
Confirm playback the signal recorded in step 1 become adjustable
limits as follows.
If these levels do not adjustable limits, adjustment the RV341 (LCH) and R V441 (R-CH) on the AUDIO board to repeat steps 1 and
2.
Adjustable limits:Playback output of 315 Hz to playback
output of 10 kHz: ±0.5 dB
Adjustment Location: AUDIO board
Record Level Adjustment DECK B
Procedure:
1. Mode: Record
pin
6
(L-CH) of IC1501 on the MAIN board.
pin
#¶
(R-CH) of IC1501 on the MAIN board.
AF OSC
315 Hz, 50 mV (–23.8 dB)
Ω
attenuator
600
blank tape
CS-123
set
RECORD
BAIS
L
RV301
RV401®R
PB LEVEL
[MAIN BOARD] (Component Side)
R
®
L
RV441RV341
– DECK B –
IC201
IC301
TAPE SPEED
(NORMAL)
RV651
®
PB
LEVEL
1
CN207
RECORD LEVEL
– DECK A –
RV1501
211
3
IC1501
2242
RV1551
(HIGH)
RV652
RV311
L
RV411
R
®
®
®
CN20
pin
2
(GND) of CN207 on the MAIN board.
2.Mode: Playback
recorded
portion
set
MAIN board
CN207 (pin
(pin
3
1
: L-CH)
: R-CH)
level mete
+
–
Confirm playback the signal recorded in step 1 become adjustable
limits as follows.
If these levels do not adjustable limits, adjustment the RV1501 (LCH) and R V1551 (R-CH) on the MAIN board to repeat steps 1 and
2.
Adjustable limits:
CN207 PB level: 47.3 to 53.1 mV (–24.3 to –23.3 dB)
Adjustment Location: MAIN board
— 20 —
HCD-V3900/V5900
e
e
e
e
+
–
TP (PLCK)
BD board
frequency counter
r
CD SECTION
Notes:
1. CD block basically constructed to operate without adjustment. Therefore, check each item in order given.
2. Use YEDS-18 disc (Part No.: 3-702-101-01) unless otherwise indicated.
3. Use the oscilloscope with more than 10 MΩ impedance.
4. Clean an object lens by an applicator with neutral detergent when the
signal level is low than specified value with the following checks.
S-Curve Check
Connection:
oscilloscop
BD board
TP (FE)
TP (VC)
+
–
Procedure:
1. Connect the oscilloscope to TP (FE) and TP (VC) on BD board.
2. Connect the TP (FEI) and TP (VC) with lead wire.
3. Turned power switch on.
4. Put disc (YEDS-18) in and turned power switch on again and
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 3.0 ± 1.0 Vp-p.
S-curve waveform
symmetry
A
within 3.0
B
±
1.0 Vp-p
RF signal waveform
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
(with the 10: 1 prob
in use)
level: 1.3 Vp-p
+0.25
–0.20
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.
E-F Balance (Traverse) Check
Connection:
oscilloscop
(DC range)
BD board
TP (TE)
TP (VC)
+
–
Procedure:
1. Connect the oscilloscope to TP (TE) and TP (VC) on BD board.
2. Turned power switch on.
3. Connect the SL702 and SL703 on the VIDEO board with solder.
4. Put disc (YEDS-18) in and press the · button, and play the
number five track.
5. Press the REPEA T button. (The tracking servo and the sledding
servo are turned off.)
6. Confirm that the level B of the oscilloscope’s waveform and
the A (DC voltage) of the center of the traverse waveform.
Confirm the following:
A/B × 100 = less than ±22 %
Traverse waveform
Center of the waveform
RF PLL Free-run Frequency Check
Connection:
Procedure:
1. Connect the frquency counter to TP (PLCK) on the BD board.
2. Turned power switch on.
3. Put disc (YEDS-18) in and press the · button, and play the
number five track.
4. Confirm that the reading on frequency counter is 4.3218 MHz.
Connection Location:
[BD BOARD] (SIDE-A)
(FEI)
(FE)
(TE)
(PLCK)
IC103
IC101
(RF)
(VC)
VIDEO SECTION
Frequency Adjustment
Connection:
VIDEO board
TP410 (DCLK)
Procedure:
1. Connect the frequency counter to TP410 (DCLK) on VIDEO
board.
2. Turned power switch on.
3. Press the FUNCTION button to select the CD.
4. Adjust CT401 on the VIDEO board so that the frequency counter
reading 13.5 MHz ± 40 Hz at stop status.
Adjustment Location:
[VIDEO BOARD] (SIDE-B)
frequency counte
+
–
CT401
TP410
(DCLK)
IC402
6. After check, remove the lead wire connected in step 2.
Note:• Try to measure several times to make sure that 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
Connection:
oscilloscop
(AC range)
BD board
TP (RF)
TP (VC)
+
–
Procedure:
1. Connect the oscilloscope to TP (RF) and TP (VC) on BD board.
2. Turned power switch on. (stop mode)
3. Put disc (YEDS-18) in and press the · button.
4. Confirm that the oscilloscope waveform is clear and check RF
signal level is correct or not.
Note:Clear RF signal waveform means that the shape “≈” can be clearly
distinguished at the center of the waveform.
B
0V
A (DC voltage)
level: 1.3 ± 0.6 Vp-p
7. Press the REPEA T button. (The tracking servo and the sledding
servo are turned on.) Confirm that the C (DC voltage) is almost
equal to the A (DC voltage) is step 6.
Traverse waveform
0 V
Tracking servo
Sled servo
OFF
Tracking servo
Sled servo
ON
C (DC
voltage)
8. After check, remove the soldering installed in step 3.
— 21 —— 22 —
HCD-V3900/V5900
6-1. BLOCK DIAGRAM – BD SECTION –
SECTION 6
DIAGRAMS
OPTICAL PICK-UP
BLOCK (KSS-213D/Q-NP)
LASER
DIODE
PD
DETECTOR
E
AC
BD
F
LD
TRACKING
COIL
FOCUS
COIL
LD
POWER
1
4
VC
M102
SLED
MOTOR
M101
SPINDLE
MOTOR
LD
DRIVE
Q101
RF AMP
IC103
APC LD
2
AMP
RF FQ
AMP
19
RF
INTEGRATOR
16
15
13
1110
VC
12
INTE-
GRATOR
4
5
19
20
10
9
23
24
VC
1
3
4
5
6
8
9
T+
T–
F+
16
F–
17
13
M
12
27
M
26
RF
SUMMING
AMP
FOCUS
ERROR
AMP
TRACKING
ERROR
AMP
VC
BUFFER
FOCUS/TRACKING COIL DRIVE
SPINDLE/SLED MOTOR DRIVE
IC102
1
2
DIGITAL SERVO
DIGITAL SIGNAL PROCESSOR
IC101
ASY0
39
RF AC
36
ASY1
RF DC
TE
SE
FE
TFDR
TRDR
FFDR
FRDR
SRDR
SFDR
MDP
ASYMMETRY
CORRECTION
A/D
CONVERTER
38
26
27
28
29
4
6
8
10
2
100
96
MIRR
DFCT
FOK
DETECTOR
MIX
FOK
DFCT
MIRR
SERVO DSP
FOCUS
SERVO
TRACKING
SERVO
SLED
SERVO
PWM
GENERATOR
TRACKING
PWM
GENERATOR
FOCUS
PWM
GENERATOR
SLED
PWM
GENERATOR
DIGITAL
PLL
CLOCK
GENERATOR
EFM
DEMODULATOR
62
XTAL
SYNC
PROTECTOR
TIMING
GENERATOR 1
CLV SERVO
PROCESSOR
1B TIMS
OVERSAMPLING
FILTER
NOISE
SHAPER
REGISTER
DATA BUS
ERROR
CORRECTOR
TIMING
GENERATOR 2
PRIORITY
EMCODER
ADDRESS
GENERATOR
32K
RAM
D/A
DATA
PROCESSOR
MUTE
79 54
GFS
DIGITAL
OUT
PEAK
DETECTOR
SERIAL/PARALLEL
PROCESSOR
INTERFACE
S STOP
99
SWITCH
+5V
SERVO
S101
LIMIT
SUBCODE
P-W
PROCESSOR
SUBCODE
Q
PROCESSOR
INTERFACE
SEQUENCER
CPU
SERVO
AUTO
MD2
EXCK
SBSO
SUBQ
SQCK
SCLK
DATA
LRCK
BCLK
SCOR
WFCK
DATA
XLT
CLK
SENS
C2PO
FOK
DFCT
MIRR
XRST
+5V
70
76
75
77
78
83
46
45
47
74
73
86
87
88
80
56
93
92
91
81
LDON
384FS
EXCK
SUBQ
SUBQ
SQCK
SCLK
ADATA
LRCK
BCLK
SCOR
DATA
XLT
CLK
SENS
C2PO
XRST
AMUTE
B
VIDEO
SECTION
(Page 25 )
15MUTE
16
• SIGNAL PATH
: CD
: VIDEO
— 23 —— 24 —
6-2. BLOCK DIAGRAM – VIDEO SECTION –
BUFFER
IC501 (1/2)
B
CD
SECTION
(Page 24)
IC501
(2/2)
B
CD
SECTION
(Page 24)
16
BCK
ADATA
LRCK
C2PO
384FS
ADATA
LRCK
BCLK
28.63636MHz
45.1584MHz
DATA
CLK
AMUTE
384FS
416
384FS
DATA
CLK
AMUTE
SQCK
SUBQ
SCLK
XLT
LDON
SCOR
SENS
XRST