Sony HCD-LV60 User manual

SERVICE MANUAL
COMPACT Hi-Fi STEREO SYSTEM
E Model
SPECIFICATIONS
HCD-LV60
HCD-LV60 is the Amplifier, VCD/CD player,
Tape Deck and Tuner section in LBT-LV60.
Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol ;are trade-
marks of Dolby Laboratories Licensing Corporation.
Model Name Using Similar Mechanism HCD-VR50/VR70
CD CD Mechanism Type CDM37L-5BD34L
Section Base Unit Name BU-5BD34L
Optical Pick-up Name KSS-213D/Q-NP
TAPE Model Name Using Similar Mechanism NEW
Section Tape Transport Mechanism Type TCM-230PWR12
– Continued on next page –
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2
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED
LINE WITH MARK 0ON 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 PUB-
LISHED BY SONY.
TABLE OF CONTENTS
1. SERVICING NOTES ................................................ 3
2. GENERAL
Location of Controls ....................................................... 4
Setting the Time .............................................................. 5
3. DISASSEMBLY ......................................................... 6
4. TEST MODE.............................................................. 10
5. MECHANICAL ADJUSTMENTS ....................... 12
6. ELECTRICAL ADJUSTMENTS
Deck section .................................................................... 12
CD Section ...................................................................... 15
Video Section .................................................................. 15
7. DIAGRAMS
7-1. Block Diagram – CD SERVO Section – ....................... 16
7-2. Block Diagram – AUDIO/VIDEO CD Section –.......... 17
7-3. Block Diagram – TAPE DECK Section – ..................... 18
7-4. Block Diagram – MAIN Section – ................................ 19
7-5. Block Diagram – DISPLAY/KEY CONTROL/
POWER SUPPLY Section – ........................................... 20
7-6. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 21
7-7. Printed Wiring Board – BD Board – ............................. 22
7-8. Schematic Diagram – BD Board – ................................ 23
7-9. Schematic Diagram – VIDEO Board (1/2) – ................ 24
7-10. Schematic Diagram – VIDEO Board (2/2) – ................ 25
7-11. Printed Wiring Board – VIDEO Board –....................... 26
7-12. Printed Wiring Boards – CD MOTOR Section – .......... 28
7-13. Schematic Diagram – CD MOTOR Section – .............. 29
7-14. Printed Wiring Board – AUDIO Board – ...................... 30
7-15. Schematic Diagram – AUDIO Board – ......................... 31
7-16. Printed Wiring Board – LEAF SW Board –.................. 32
7-17. Schematic Diagram – LEAF SW Board –..................... 32
7-18. Printed Wiring Board – MAIN Board – ........................ 33
7-19. Schematic Diagram – MAIN Board (1/3) – .................. 34
7-20. Schematic Diagram – MAIN Board (2/3) – .................. 35
7-21. Schematic Diagram – MAIN Board (3/3) – .................. 36
7-22. Printed Wiring Board – PANEL FL Board –................. 38
7-23. Schematic Diagram – PANEL FL Board – ................... 39
7-24. Printed Wiring Board – PANEL VR Board – ................ 40
7-25. Schematic Diagram – PANEL VR Board –................... 41
7-26. Printed Wiring Boards – TC-A/TC-B/CD-L/
CD-L2/CD-R/CD-R2 Boards – ...................................... 42
7-27. Schematic Diagram – TC-A/TC-B/CD-L/
CD-L2/CD-R/CD-R2 Boards – ...................................... 43
7-28. Printed Wiring Boards – FRONT INPUT/
HEADPHONE/MIC Boards – ........................................ 44
7-29. Schematic Diagram – FRONT INPUT/
HEADPHONE/MIC Boards – ....................................... 45
7-30. Printed Wiring Board – PA Board – .............................. 46
7-31. Schematic Diagram – PA Board – ................................. 47
7-32. Printed Wiring Board – TRANS Board –...................... 48
7-33. Schematic Diagram – TRANS Board –......................... 49
7-34. IC Pin Function Description ........................................... 53
8. EXPLODED VIEWS................................................ 63
9. ELECTRICAL PARTS LIST ............................... 71
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3
SECTION 1
SERVICING NOTES
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
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 dam-
aged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing 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.
The laser diode in the optical pick-up block may suffer electro-
static 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 emis-
sion, observe from more than 30 cm away from the objective lens.
SELF-DIAGNOSIS
This unit is equipped with a self-diagnosis function.
The function is used for diagnosing the conditions of the circuits
of the VIDEO board.
The circuits can be determined if normal or abnormal by the light-
ing of D502 of the VIDEO board.
Lighting of D502
When lit : Operates normally
Blinks repeatedly: The circuit may be faulty.
D502
IC505
–VIDEO Board (Side A) –
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SECTION 2
GENERAL
LOCATION OF CONTROLS
– Front Panel –
1
rg
62 3 4 5 q;987 qa
rf
rs
ra
r;
ek
eg
ej
el
rd
eh
es
ea e; wl wk wj wh
ef
ed
wg
wa
qh
qf
qg
qd
qs
w;
ws
wd
wf
qk
qj
ql
1?/1(POWER) button
2DAILY button
3REC button
4SLEEP button
5c/CLOCK SET button
6DISPLAY
7KARAOKE PON/MPX
button
8SURROUND button
9SYNC BASS button
q; SYNC EQ button
qa #button
qs 2button
qd FUNCTION button
qf VOLUME dial
qg DECK B
qh PHONES jack
DECK B operating button
qj gbutton
Gbutton
qk xbutton
mbutton
Mbutton
ql Xbutton
zbutton
w; H SPEED DUB button
CD SYNC button
wa lAMS Lcontrol
ws GXbutton
wd xbutton
mbutton
Mbutton
wf DISC SKIP button
wg VIDEO 2 INPUT jack
wh ZB EJECT button
wj ZA EJECT button
wk DECK A
wl DISC 1 to DISC 5 button
e; EDIT button
ea NON-STOP button
es CD FLASH button
ed CD LOOP button
ef DOLBY NR button
eg DIRECTION button
DECK A operating button
eh xbutton
mbutton
Mbutton
ej gbutton
Gbutton
ek MIC 1 jack
el MIC 2 jack
r; SUPER WOOFER button
ra GROOVE button
rs EFFECT button
rd SPECTRUM ANALYZER
button
rf DISPLAY button
rg DEMO (STAND BY)
button
rh TUNER/BAND button
rj TUNING – button
rk TUNING + button
rl ENTER/NEXT button
t; TUNER MEMORY button
ta STEREO/MONO button
ts TUNING MODE button
td v/B/V/bbutton
tf RETURN button
tg PREV button
th NEXT button
tj PLAY MODE button
tk REPEAT button
tl SELECT button
y; ACTIVE button
ya ECHO LEVEL control
ys MIC LEVEL control
yd SUPER WOOFER MODE
button
yf P FILE MEMORY button
yg GEO CTRL button
yh ENTER button
rh
rj
rk rlt;
ta
ts td
yf
yd
yg
yh
y;tl
ys
ya
tj
tg
th
tf
tk
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5
1
q;
9
8
7
5
4
6
3
2
1ANTENNA terminal
2VOLTAGE SELECTOR switch
3S VIDEO OUT jack
4SYSTEM SELECT switch
5CD DIGITAL OUT terminal
6FRONT SPEAKER terminal
7VIDEO OUT jack
8VIDEO 1 jack
9MD IN/OUT jack
q; PHONO IN jack
–Rear Panel –
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6
CASE
FRONT PANEL SECTION
Note: Follow the disassembly procedure in the numerical order given.
SECTION 3
DISASSEMBLY
2five screws
(BVTT3 ×6)
6case
3two screws
(BVTP3 ×8)
1three screws
(CASE3 TP2)
1three screws
(CASE3 TP2)
4
4
5
5
5four screws
(BVTP3 ×8)
5screw (BVTP3 ×8)
2connector
(CN802)
4two lugs
6claw
3screw
(BVTP3 ×8
)
2two connectors
(CN452, 702)
1wire (flat type)
(15 core) (CN303)
1wire (flat type)
(17 core) (CN304)
1wire (flat type)
(13 core) (CN431)
3three screws
(BVTP3 ×8)
4lug
7front panel section
MAIN BOARD (Page 8)
CD MECHANISM DECK
(Page 9)
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7
TAPE MECHANISM DECK (TCM-230PWR12)
MAIN BOARD
6wire (flat type) (13 core)
(CN411)
2nine screws
(BVTP3 ×8)
5back panel
1wire (flat type) (13 core)
(CN441)
2three screws (BVTP3 ×8)
2two screws (BVTP3 ×8
)
4connector (CN903)
7connector (CN701)
0MAIN board
3
9two connector
(CN803, 804)
7connector
(CN412)
8two screws
(BVTP3 ×8)
1wire (flat type) (17 core)
(CN1001)
2two screws
(BVTP3 ×8)
1wire (flat type) (15 core)
(CN601)
2two screws
(BVTP3 ×8)
3tape mechanism deck
(TCM-230PWR12)
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8
CD MECHANISM DECK (CDM37L-5BD34L)
3three screws
(BVTP3 ×8)
3three screws
(BVTP3 ×8)
2connector
(CN412)
1wire (flat type) (13 core)
(CN411)
5Open the cable clamp.
4
4
6
3two screws
(BVTP3 ×8)
2connector
(CN701)
7five screws
(BVTP3 ×8)
q; CD mechanism deck
(CDM37L-5BD34L)
9wire (flat type) (23 core
)
(CN101)
8
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9
BASE UNIT (BU-5BD34L)
DISC TABLE
3base unit
(BU-5BD34L)
1BU fitting scre
w
2boss
1two screws
(BVTP3 ×8)
A
2two brackets (BU)
3step screw
4disc table
A
Note: When the disc table is installed, adjust the positions of roller cam
and mark B as shown in the figure, then set to the groove of disc
table.
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10
[CD Delivery Mode]
• 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. Press the ?/1button to turn the power ON.
2. Press the [CD LOOP] and ?/1buttons simultaneously.
3. A message “LOCK” is displayed on the fluorescent indicator
tube, and the CD delivery mode is set.
[LED and Fluorescent IndicatorTube All Lit, Key Check
Mode]
Procedure:
1. Press three buttons of [ /CLOCK SET], [ENTER/NEXT],
and [DISC 2] simultaneously.
2. LEDs and fluorescent indicator tube are all turned on.
Press the [DISC 2] button, and the key check mode is acti-
vated.
3. In the key check mode, the fluorescent indicator tube displays
“K 0 J0 V0”. Each time a button is pressed, “K” value in-
creases. However, once a button is pressed, it is no longer taken
into account.
“J” value increases like 1, 2, 3 ... if turn the JOG dial clock-
wise, or it decreases like 0, 9, 8 ... if turn the JOG dial counter-
clockwise.
“V” value increases like 1, 2, 3 ... if turn the [VOLUME] dial
clockwise, or it decreases like 0, 9, 8 ... if turn the JOG dial
counterclockwise.
4. To exit from this mode, press three buttons in the same man-
ner as step 1, or disconnect the power cord.
c
[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. Turn the power ON or set to the DEMO mode.
2. Press three buttons of [ /CLOCK SET], [ENTER/NEXT], and
?/1simultaneously.
3. The set is reset, and displays “COLD RESET”, then becomes
DEMO mode.
[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. Turn the power ON or set to the DEMO mode.
2. Press three buttons of [ /CLOCK SET], [ENTER/NEXT],
and [DISC 1] simultaneously.
3. The set is reset, and becomes standby state.
[Change-over the AMTuning Interval]
(EXCEPT Saudi Arabia model)
• The AM tuning interval can be changed over 9 kHz or 10 kHz.
Procedure:
1. Press the ?/1button to turn the power ON.
2. Select the function “TUNER”, and press the [TUNER/BAND]
button to select the BAND “AM (MW)”.
3. Press the ?/1button to turn the power OFF.
4. Press the [ENTER/NEXT] and ?/1buttons simultaneously,
and the display on the fluorescent indicator tube changes to
“AM 9 k STEP” or “AM 10 k STEP”, and thus the tuning
interval is changed over.
c
SECTION 4
TEST MODE
c
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11
[Aging Mode]
This mode can be used for operation check of tape deck section.
Tape deck section work in parallel.
•If an error occurred:
The aging operation stops and display then status.
•If no error occurs:
The aging operation continues repeatedly.
Procedure:
1. Load the tapes into the decks A and B respectively.
2. Press the [FUNCTION] button to select the function “CD”.
3. Press the [PLAY MODE] button to set the “ALL DISCS”mode,
and press the [REPEAT] button to “REPEAT”off.
4. Press three buttons of [ /CLOCK SET], [ENTER/NEXT],
and [DISC 4] simultaneously.
5. The aging mode is activated, if the indicator of disc tray num-
ber on the fluorescent indicator tube is blinking.
6. To exit from the aging mode, press the ?/1button to turn the
power OFF and operate the cold reset. (Refer to the “MC Cold
Reset”)
1. Display at the Aging Mode
•Display operating state of tape deck section alternately.
•If an error occurred, stop display.
2. 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 A AG-4”
2 minutes
Rewind the tape B
“TAPE B AG-5”
Shut off
Note: “TAPE *AG-*”is display of each step.
c
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12
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 demagne-
tizer.
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 sup-
ply voltage unless otherwise noted.
Torque Measurement
Mode Torque Meter Meter Reading
3.1~6.96 mN•m
FWD CQ-102C (31 to 71 g•cm)
(0.43 – 0.98 oz•inch)
FWD 0.20~0.58 mN•m
back tension CQ-102C (2 to 6 g•cm)
(0.03 – 0.08 oz•inch)
3.1~6.96 mN•m
REV CQ-102RC (31 to 71 g•cm)
(0.43 – 0.98 oz • inch)
REV 0.20~0.58 mN•m
back tension CQ-102RC (2 to 6 g•cm)
(0.03 – 0.08 oz • inch)
6.97~14.02 mN•m
FF/REW CQ-201B (71 to 143 g•cm)
(0.99 – 1.99 oz • inch)
9.80 mN•m
FWD tension CQ-403A (100 g or more)
(3.53 oz or more)
9.80 mN•m
REV tension CQ-403A (100 g or more)
(3.53 oz or more)
Precaution
1. Demagnetize the record/playback head with a head demagne-
tizer.
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 ad-
justment 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 other-
wise specified.
8. Set to the DOLBY NR OFF.
9. Set to the test mode.
(1) Press the ?/1button to turn the power ON.
(2) Select the function “TAPE A or B”.
(3) Press the button of [ /CLOCK SET], [ENTER/NEXT],
and[DISC 3] simultaneously, to set the tape deck test mode
and blink the indicator of disc tray number on the fluores-
cent indicator tube.
(4) To exit from the test mode, press the ?/1button.
• Test Tape
Tape Signal Used for
P-4-A100 10 kHz, – 10 dB Azimuth Adjustment
WS-48B 3 kHz, 0 dB Tape Speed Adjustment
P-4-L300 315 Hz, 0 dB Playback Level Adjustment
0 dB = 0.775 V
DECK SECTION
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Tape Speed Adjustment DECK B
Mode: Playback
1. Insert the WS-48B into the deck B.
2. Press the Hbutton on the deck B.
3. Press the [H SPEED DUB] button in playback mode.
Then at HIGH speed mode.
4. Adjust RV1001 on the LEAF SW board do that frequency
counter reads 6,000 ± 180 Hz.
5. Press the [H SPEED DUB] button.
Then back to NORMAL speed mode.
6. Adjust RV1002 on the LEAF SW board so that frequency
counter reads 3,000 ± 90 Hz.
Adjustment Location: LEAF SW board
Sample value of Wow and Flutter: 0.3% or less W.RMS (JIS)
(WS-48B)
Playback level Adjustment DECK A DECK B
Procedure:
Mode: Playback
Deck A is RV311 (L-CH) and RV411 (R-CH), Deck B is RV301
(L-CH) and RV401 (R-CH) so that adjustment within specifica-
tion values as follows.
Specification Values:
J101 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
2. Turn the adjustment screw and check output peaks. If the peaks
do not match for L-CH and R-CH, turn the adjustment screw
so that outputs match within 1dB of peak.
3. Mode: Playback
4. Repeat step 1 to 3 in playback (REV) mode.
5. After the adjustments, apply suitable locking compound to the
pats adjusted.
Screw
position
L-CH
peak
within
1dB
Output
level
L-CH
peak R-CH
peak
within
1dB
Screw
position
R-CH
peak
set
test tape
P-4-A100
(10 kHz, – 10 dB)
R-CH
oscilloscope
L-CH
R-CH
VH
waveform of oscilloscope
in phase 45°90°135°180°
good wrong
MAIN board
MD OUT jack (J701)
L-CH
+
–
set
test tape
WS-48B
(3 kHz, 0 dB)
MAIN board
MD OUT jack (J701)
L-CH, R-CH
frequency counter
+
–
set
test tape
P-4-L300
(315 Hz, 0 dB)
MAIN board
MD OUT jack (J701)
L-CH, R-CH
level mete
r
reverse
forward
Record/Playback Head Azimuth Adjustment
Note: Perform this adjustments for both decks
Procedure:
1. Mode: Playback (FWD)
DECK A DECK B
set
MAIN board
MD OUT jack (J701)
L-CH, R-CH
+
–
level mete
r
test tape
P-4-A100
(10 kHz, –10 dB)
Adjustment Location:Playback Head (Deck A).
Record/Playback/Erase Head (Deck B).
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14
REC Bias Adjustment DECK B
Procedure:
1. Mode: Record
FUNCTION: VIDEO
2. Mode: Playback
3. Confirm playback the signal recorded in step 1 become speci-
fication values as follows.
If these values are out of specification values, adjust the RV341
(L-CH) and RV441 (R-CH) on the AUDIO board to repeat
steps 1and 2.
Specification values: Playback output of 315 Hz to playback
output of 10 kHz: ± 0.5 dB
Adjustment Location: AUDIO board
REC Level Adjustment DECK B
Procedure:
1. Mode: Record
FUNCTION: VIDEO
2. Mode: Playback
3. Confirm playback the signal recorded in step 1 become speci-
fication values as follows.
If these values are out of specification values, adjust the RV301
(L-CH) and RV351 (R-CH) on the MAIN board to repeat steps
1 and 2.
Specification values:
J101 PB level: 47.2 to 53.0 mV (–24.3 to –23.3 dB)
Adjustment Location: MAIN board
attenuator
set
MAIN board
VIDEO 1 AUDIO IN jack (J701)
L-CH, R-CH
1) 315 Hz
2) 10 kHz 50 mV (–23.8 dB)



600 Ωblank tap
e
CN-123
AF OSC
+
–
set
recorded
portion
MAIN board
MD OUT jack (J701)
L-CH, R-CH
level mete
r
set
MAIN board
VIDEO 1 AUDIO IN jack (J701)
L-CH, R-CH
315 Hz, 50 mV (–23.8 dB) blank tape
CS-123
600 Ω
attenuator
AF OSC
+
–
set
recorded
portion
MAIN board
MD OUT jack (J701)
L-CH, R-CH
level mete
r
RV401
RV301 RV341 RV311 RV411
IC602 CN601
LRRL
     
RV441
PB LEVEL
–DECK B –
REC BIAS
LR
  
PB LEVEL
–DECK A –
– AUDIO BOARD (Component Side) –
TAPE SPEED
RV1002 RV1001
(NORMAL) (HIGH)
CN1001
         
–LEAF SW BOARD (Component Side) –
MD OUT
L/R
IC301 REC LEVEL
RV301
L-CH
RV351
R-CH
VIDEO 1
AUDIO IN
L/R
J701
          









–MAIN BOARD (Conductor Side) –
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1515
VIDEO SECTION
Frequency Adjustment
Connection:
Procedure:
1. Connect the frequency counter to TP508 (27 MHz) onVIDEO
board.
2. Turn the power ON.
3. Press the [FUNCTION] button to select the CD.
4. Adjust CT503 on the VIDEO board so that the frequency
counter reading 27.0 MHz ± 80 Hz at stop status.
Adjustment Location:
+
–
TP508 (27 MHz)
VIDEO board frequency counter
IC505
IC507
TP508
(27 MHz)
CT503
VIDEO
Frequency
Adjustment
– VIDEO BOARD (Side A) –
Note:
1. CD Block is basically designed to operate without adjustment. There-
fore, check each item in order given.
2. UseYEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10 MΩimpedance.
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
Procedure:
1. Connect oscilloscope to TP (FE) and TP (VC).
2. Connect between TP (FE1) and TP (VC) by lead wire.
3. Connect between TP (AGCCON) and TP (GND) by lead wire.
4. Turn the power ON.
5. Load a disc (YEDS-18) and actuate the focus search. (In con-
sequence of open and close the disc tray, actuate the focus
search)
6. Cofirm that the oscilloscope waveform (S-curve) is symmetri-
cal between A and B. And confirm peak to peak level within
4 ± 1 Vp-p.
S-curve waveform
7. After check, remove the lead wire connected in step 2 and 3.
Note: • Try to measure several times to make sure than the ratio ofA : 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
Procedure:
1. Connect oscilloscope to TP (RF) and TP (VC).
2. Connect between TP (AGCCON) and TP (GND) by lead wire.
3. Turn the power ON.
4. Load a disc (YEDS-18) and press the GXbutton to play.
5. Confirm that the oscilloscope waveform is clear and check RF
signal level is correct or not.
6. After check, remove the lead wire connected in step 2.
Note: Clear RF signal waveform means that the shape “ ” can be clearly
distinguished at the center of the waveform.
CD SECTION
+
–
BD board
TP (FE)
TP (VC)
oscilloscop
e
A
B
symmetry
within 4 ±1 Vp-p
+
–
BD board
TP (RF)
TP (VC)
oscilloscop
e
(AC range)
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
(with the 10: 1 probe
in use)
level:
1.45 ±0.3 Vp-p
E-F Balance (1Track Jump) Check
Procedure :
1. Connect oscilloscpe to TP (TE) and TP (VC).
2. Turn the power ON.
3. Load a disc (YEDS-18) and playback the number five track.
4. Press the GXbutton. (Becomes the 1 track jump mode)
5. Confirm that the level B and A (DC voltage) on the oscillo-
scope waveform.
1 track jump waveform
Specified level: ×100 = less than ± 22%
6. After check, remove the lead wire connected in step 1.
Checking Location:
A
B
+
–
BD board
TP (TE)
TP (VC)
oscilloscope
(DC range)
A (DC voltage
)
center of
waveform
B
0V
level = 1.3 ±0.6 Vp-p symmetry
TP (AGCCON)
TP (RF) TP (GND)
TP (FE)
IC103
IC102
IC101
TP (FE1)
TP (VC)
TP (TE)
–BD BOARD (Side B) –
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1616
HCD-LV60
CD MECHANISM CONTROLLER
IC502 (1/2)
A/D
CONVERTER
CH1OUTF
CH1OUTR
5
4
7
2
1
5
10
6
6
7
8
16
14
13
10
11
22
4
3
24
25
23
5
6
2
3
17
18
15
16
A
E
B
C
D
A
CD A+5V
CD A+5V
F
DETECTOR
A
B
C
D
RF
SUMMING
AMP
FOCUS
ERROR AMP
RF EQ
AMP
TRACKING
ERROR AMP
RFO
FE
RF AMP,
FOCUS/TRACKING ERROR AMP
IC103
TE
E
FF I-V AMP
E I-V AMP
AUTOMATIC
POWER CONTROL
Q101
OPTICAL
TRANSCEIVER
IC781
OSC
BUFFER
IC104
CD DIGITAL OUT
OPTICAL
APC LD
AMP APC PD
AMP
LD
LD
PD
LASER DIODE
RFAC
ASYO
ASYI
CTL2
FILTER
FILO
PCO
CLTV
FILI
DIGITAL PLL
ASYMMETRY
CORRECTOR
EFM
DEMODULATOR
DIGITAL SIGNAL PROCESSOR
IC101 (1/2)
MDP
DIGITAL
CLV
PROCESSOR
32K
RAM
ERROR
CORRECTOR
INTERNAL BUS
SQCK SQSO
MUTE EXCK
PCMD DATA
BCK
LRCK
C2PO
C4M
XTSL
XTAO
XTAI
BCK
LRCK
WDCK
C2PO
CTL1
CTL2
MD2
DOUT
DIGITAL
OUT
D/A
DIGITAL
INTERFACE
CLOCK
GENERATOR
SUBCODE
PROCESSOR
SCOR WFCK XUGF GFS EMPH SENSE DATA CLOK XLAT SBSO
SENSE CLK
SENSE
DSP CLK
DSP DATA
DSP LATCH
SE
TE
FE
RFDC
FOCUS/
TRACKING/SLED
SERVO DSP
FOCUS/TRACKING/SLED
PWM GENERATOR
SFDR
CH3FIN
CH4SIN
CH3RIN
CH3OUTF
CH3OUTR
CH2FIN
CH2RIN
CH1FIN
CH1RIN
20
MUTE
SRDR
TFDR
TRDR
FFDR
FRDR
SSTP
COUT
S101
(LIMIT)
CD A+5V
MIRR,
DFCT, FOK
DETECTOR
SERVO AUTO
SEQUENCER
SERVO
INTERFACE
CPU INTERFACE
SCLK
TO CPU INTERFACE
FOK
MIRR
DFCT
CH4OUTF
CH4OUTR
M101
(SPINDLE)
MOTOR
DRIVE
XRST
LDON
DSP MUTE
MOTOR
DRIVE
COIL
DRIVE
CH2OUTF
CH2OUTR
COIL
DRIVE
M
M
M102
(SLED)
05
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC102
2-AXIS
DEVICE
(TRACKING)
(FOCUS)
DIGITAL SERVO
PROCESSOR
IC101 (2/2)
OPTICAL PICK-UP
(KSS-213D/Q-NP)
LDON
21
HOLD SW
PD
(Page 17)
•SIGNAL PATH
: CD PLAY
: DIGITAL OUT
I-V AMP
12
11
13
14
CTRL1
CTRL2
CTL1
CTL2
SUBQ DATA
SUBQ CLK
SCOR
MCLK
33.8MHz
B
(Page 17)
DATA, BCK,
LRCK, C2PO
C
(Page 17)
TBL-L
TBL-R
M
TABLE MOTOR DRIVER
IC201
OUT1
OUT2
IN1
IN2 M201
(TABLE)
SYSTEM CONTROLLER
IC501 (1/4)
DISC TABLE
SENSOR
IC202
ENC3/UP-SW
S201
(UP)
T-SENS
XRST
MOTOR
DRIVE
RESET
DEVICE RESET
XRESET
33
31
32
29
30
34
19
8
40 41 39 43
22
20
21
26
TO SERVO AUTO
SEQUENCER
50
53 55
XPCK
12
52 54
49
48
25 76 77
66
71
16 69
72
67
65
17
64
63
2
14
79 801574 6 5 10 11 13 68 3
3 5 4 1 18 36 37 10
28 2 12
77
27
11
61
68
59
65
63
ENC2/DISC-LED 69
9
1
7
3
LED DRIVE
Q201
D201
(DISC No.)
SECTION 7
DIAGRAMS
7-1. BLOCK DIAGRAM – CD SERVO Section –
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1717
HCD-LV60
7-2. BLOCK DIAGRAM –AUDIO/VIDEO CD Section –
PROGRAM ROM
IC506
05
• SIGNAL PATH
: CD PLAY (AUDIO)
: CD PLAY (VIDEO)
D/A
CONVERTER
INPUT
INTERFACE
CIRCUIT
OSC
BUFFER
IC504
LOW-PASS
FILER
IC101
BUFFER
Q502
LOW-PASS
FILER
MODE
CONTROL
TIMING CONTROL/
CLOCK GENERATOR
VIDEO FREQUENCY
(27MHz)
DIGITAL FILTER,
D/A CONVERTER
IC509
MPEG VIDEO/AUDIO DECODER,
VIDEO SIGNAL PROCESSOR
IC505
14
11
VOUTL
VOUTR R-CH
10
RSTB
17
18
19
20
21
9 724 1
DATA
BCK
LRCK
CD-ROM
INTERFACE
CIRCUIT
MPEG
SYSTEM
DECODER MPEG
VIDEO
DECODER
VIDEO
PROCESS
CIRCUIT
CPU INTERFACE
AUDIO
INTERFACE
CIRCUIT
MPEG
AUDIO
DECODER
D-RAM/ROM INTERFACE
3
4
5
CD-DATA
C2PO
DATA
BCK
LRCK
DATA, BCK,
LRCK, C2PO
CD-BCK
CD-LRCK
6CD-C2PO
MA0 – MA10 MD0 – MD15
D0 – D15
D0 – D15
A0 – A10
A0 – A8
384FSO
768FSO
4MCKO
X503
27MHz
CT503
MD
XT2
XT1
37
14 132928
38 42 40 60
69
75
113
110
111
108
106
HRDY
Y-OUT
86
DA-XCLK
VCK-IN
DA-DATA
DA-BCK
DA-LRCK
C-OUT
93
114 121
HSEL
112
HD-OUT
119
HD-IN
117
HCK
ML
8
MC
LEVEL
SHIFT
IC501
B
(Page 16)
DATA, CLK
D
(Page 20)
MCLK 33.8MHz
A
(Page 16)
CD-L
E
(Page 19)
(Page 16)
C
DIGITAL
FILTER,
NOISE
SHAPER
CIRCUIT
58 – 56, 54, 52 – 50, 48, 46 – 44 10 – 15, 17, 19, 21, 23 – 29
16 – 19, 22 – 26
A0 – A10
12 – 5, 27, 26, 23
D8 – D14
A11 – A17
25, 4, 28, 29, 3, 2, 30
D0 – D7
O0 – O7
A0 – A10
DQ1 – DQ16
ADDRESS BUS
DATA BUS
D-RAM
IC507
A0 – A8
13 – 15, 17 – 212 – 5, 7 – 10, 31 – 34, 36 – 39
WE
22
CE
RAS
LCAS
UCAS
CAS
RESET
HINT
DATA
CLK
RAS0
MWE MCE
RESET
X501
10MHz
PGIO2/VSYNC/CSYNC
B.P.F.
B.P.F.
VIDEO
BUFFER
Q301
VIDEO
BUFFER
Q303
VIDEO
BUFFER
Q307
VIDEO
BUFFER
Q308
VIDEO
BUFFER
Q304
VIDEO AMP
IC401 (1/2)
VIDEO AMP
IC401 (2/2)
SHARPNESS
CONTROL SWITCH
Q306
SHARPNESS
FILTER
Q302
VIDEO MUTE
Q454
VIDEO MUTE
Q453
Y/C MIX
Q310
C
Y
58
41
1
2
3
4
J301
S VIDEO OUT
VIDEO SELECT
SWITCH,
VIDEO AMP
IC191
A, B, C
F
(Page 19)
106
8
1
3 52
J702 (1/2)
J804 (1/2)
VIDEO OUT
LOGIC
IN1
ABC
IN3 VOUT
IN4
CTLA CTLB CTLC
VIDEO1
VIDEO IN
VIDEO2
INPUT
VIDEO
CD MECHANISM CONTROLLER
IC502 (2/2)
22
32
2120 33
31
23
24
CL680 RESET
CL680 HINT
CL680 HRDY
CL680 SEL
DATA1I
93 NT/PAL
TEST LED
CLK1
DATA1O
45
BUS
DF LATCH
34
SHARPNESS
65
VMUTE
29
30 DATA
CLK
CLK
DATA
XOUT
XIN
NTSC
AUTO
PAL
S501
SYSTEM SELECT
D502
(SELF DIAGNOSIS)
73
13
15
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1818
HCD-LV60
7-3. BLOCK DIAGRAM –TAPE DECK Section –
PB EQ AMP
(DECK A)
IC611
PB LEVEL (L)
(DECK A)
REC-L
PB-L
CAPSTAN MOTOR
CONTROL SWITCH
Q1001
CAPSTAN
MOTOR DRIVE
Q336 –343
1
G
(Page 19)
(Page 19)
L-CH
R-CH R-CH
HP101
(PLAYBACK)
PB EQ AMP
(DECK B)
IC601
L-CH
R-CH R-CH
05
R-CH
R-CH
HRPE101 (1/2)
(RECORD/PLAYBACK)
ALC REC
EQ AMP
AMS
CIRCUIT
DOLBY NR
AMP
CIRCUIT
BIAS
CONTROL
CIRCUIT
DOLBY PASS
R-CH
L.P.F.
BUFFER
Q335
M
M1
(CAPSTAN)
HRPE101 (2/2)
(ERASE)
BIAS OSC
T621
B+
(A+7V)
R-CH
3
46
28 43
36
40
35 34 39
26
77
19 15 16 18 20 22 23 24 2517
85 84 83 82 81 80 79 78
31
33
32
+
48
4
2
RV311
PB LEVEL (L)
(DECK B)
RV301
TAPE SPEED
(NORMAL)
RV1002
TAPE SPEED
(HIGH)
RV1001
REC LEVEL (L)
(DECK B)
RV301
REC BIAS (R)
(DECK B)
RV441
REC BIAS (L)
(DECK B)
BIAS OSC
Q621, 622
REC BIAS
SWITCH
Q623
ROTATION
DETECT SENSOR
(DECK A)
IC1001
RV341
BIAS
TRAP
C331, L331
REC/PB SWITCHING
IC602
SYSTEM CONTROLLER
IC501 (2/4)
DECK PROCESS
DECK A/B SELECT, PB/REC EQ AMP,
DOLBY NR AMP, ALC, AMS
IC301
AIN (L)
BIN (L)
MAOUT
PB OUT (L)
EQ OUT
(L)
MSIN
MSOUT
BIAS ON/OFF
70
120
BIAS (N)
BIAS (C)
BIAS (M)
S1004
A 120/70
B NORM/CROM ALC ON/OFF
PB A/B
NORM/HIGH
NR ON/OFF
RM ON/OFF
REC/PB/PASS
LM ON/OFF
(DECK A 120/70)
88
S1003
(DECK A HALF)
S1001
(DECK A PLAY)
S1002
(DECK B PLAY)
S1008
(DECK B 120/70)
27
REC OUT (L)
ROUT (L)
RIN (L)
ALC (L)
EQ IN (L) ALC IN (L)
44 38
100
AMS-IN
91
A-SHUT
ROTATION
DETECT SENSOR
(DECK B)
IC1002
90
B-SHUT
TRIGGER
PLUNGER DRIVE
(DECK A)
Q333, 334
73
A-TRG
TC-MUTE
R/PB/PAS
NR-ON/OFF
REC-MUTE
BIAS
EQ-H/N
PB-A/B
ALC
TC-RELAY
A-PLAY-SW B-PLAY-SW A-HALF
89
S1006
(DECK B HALF)
S1009
(DECK B REC)
S1005
(DECK A REC)
B-HALF
TRIGGER PLUNGER
DECK A
TRIGGER
PLUNGER DRIVE
(DECK B)
Q331, 332
72
B-TRG
76
74
75
CAP-M-H/L
CAPM-CNT2
CAPM-CNT1
TRIGGER PLUNGER
DECK B
87 86
H
•SIGNAL PATH
: PLAYBACK (DECK A)
: PLAYBACK (DECK B)
: RECORD
D+5V
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1919
HCD-LV60
7-4. BLOCK DIAGRAM –MAIN Section –
DBFB CONTROL
SWITCH
Q111
BASS WOOFER
CONTROL SWITCH
Q115
RESET SIGNAL
GENERATOR
IC801
PROTECT
SWITCH
Q804
RESET
SWITCH
Q801
PHONO
EQ AMP
IC601
POWER AMP
IC801
CD-L
J701 (1/2)
E
(Page 17)
(Page 18)
H(Page 18)
(Page 20)
PB-L
G
SPEANA I
R-CH
FUNCTION SELECT
SWITCH
IC181
R-CH
R-CH
05
FM/AM TUNER UNIT
VOLUME
CONTROL
CPU
INTERFACE
BASS BOOST
CONTROL
CIRCUIT
INPUT
SELECT
SWITCH SOUND
CONTROL
CIRCUIT
GRAPHIC
EQUALIZER
CONTROL
CIRCUIT
R-CH
FEED BACK
SWITCH
Q112
R-CH
COMMAND
F OUT2
BUF
OUT2
VOL
IN2
+
+
R-CH
R-CH
R-CH
R-CH
+5V
D803
R-CH
+
+
MIC LEVEL
RV751
ECHO
LEVEL
RV750
MIC AMP
IC850 (2/2)
MUTING
Q113
OVER LOAD
DETECT
Q801, 851
TEMPERATURE
DETECT SWITCH
Q831, 832
DC DETECT
SWITCH
Q433, 434
INPUT SELECT SWITCH,
GRAPHIC EQUALIZER CONTROL,
ELECTRICAL VOLUME
IC101
IN D2
IN C2
IN E2
IN A2
IN F2
KEY IN2 KEY IN1
KEY OUT 2
KEY OUT 1
L+R
DATA CLOCK LATCH
493-DATA
493-CLK
493-LAT
SW MODE
BB B2, BB A2
MIC IN
SUPER
WOOFER
REC A2
REC-L
REC B2
R-CH
R-CH
X0 X
AB
ABC
X1
TH831
R-CH
R-CH
+
R-CH
M901
(FAN)
R-CH
–1
–2
FAN MOTOR
DRIVE
Q961, 962
R-CH
R-CH
OVER LOAD
DETECT SWITCH
Q432
PROTECT SWITCH
Q439
OVER LOAD
DETECT SWITCH
Q437
SPEAKER PROTECT
RELAY DRIVE
Q431
SPEAKER PROTECT
RELAY DRIVE
Q401, 402
STANDBY SWITCH
Q803, 804, 834
MUTING CONTROL
SWITCH
Q802, 803
MUTING CONTROL
SWITCH
Q833
HEADPHONE
MUTE
Q805, 855
TM401
SPEAKER
IMPEDANCE
USE 8 –16Ω
J802
MIC 2
J801
MIC 1
L
L
R
R
PHONO
IN
L
R
VIDEO1
AUDIO IN
VIDEO2
INPUT
AUDIO
MD IN
J702 (2/2)
L
R
MD OUT
ANTENNA
ST-L
FM ANT
FM ANT
AM ANT
AM ANT
ST-R
ST-MUTE
STEREO
TUNED
ST-DIN
ST-DOUT
ST-CLK
ST-CE
ST-MUTE
STEREO
TUNED
ST-DOUT
ST-DIN
ST-CLK
ST-CE
FM
75Ω
AM
38, 39
D501
D534
D807
D401
RY401
J803
PHONES
+
–
–
+
SYSTEM CONTROLLER
IC501 (3/4)
+
MIC AMP
IC850 (1/2)
DIGITAL ECHO
IC851
(Page 17) A, B, C
F
(Page 20) J
27
F-RELAY 3
7
34
STK-POWER 1
HP MUTE 93
LINE-MUTE
RESET
6
12
AC-CUT 22
HP-IN 36
47
48
38
60 5
59
6
258 57
42 41
72
36
34
BUF IN2
373233
49
50
51
54
53
52
55
66
67
65
69
64 IN B2
68
M
L
R
30
+
XC-OUT
X502
16MHz
X501
32.768kHz
XC-IN
X-OUT
X-IN
FUNC SEL0
FUNC SEL1
V MUTE
11
10
13
46
14 13
10 9
12
15
J804 (2/2)
L
R
45
28
RESET
PROTECT
DBFB-H/L
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2020
HCD-LV60
7-5. BLOCK DIAGRAM –DISPLAY/KEY CONTROL POWER SUPPLY Section –
+10V
REGULATOR
IC931
TUNER
B+ SWITCH
Q931, 932
+12V
REGULATOR
IC932
+7V
REGULATOR
IC933
+7V
REGULATOR
IC901
–7V
REGULATOR
IC951
ST +10V
(FM/AM TUNER UNIT B+)
FAN MOTOR B+
TC M+12V
(TC MOTOR SECTION B+)
CD M+7V
(CD MOTOR SECTION B+)
B+ SWITCH
Q911, 912
B+ SWITCH
Q901, 902
B–SWITCH
Q903, 904
+5V
REGULATOR
IC921
VCD
B+ SWITCH
Q921
+5V
REGULATOR
IC911
+3.3V
REGULATOR
Q531
RECT
D833 –836
RECT
D841 –844
POWER AMP (IC801),
PROTECT CIRCUIT
POWER TRANSFORMER
T951
RECT
D832
RECT
D831
NEGATIVE VOLTAGE
REGULATOR
Q903, 908 AC IN
TC, PANEL,
AUDIO
A+7V
A–7V
VF
TO FLUORESCENT
INDICATOR TUBE
(FL601) VF
+VL
–VL
+VH
–VH
REMOTE CONTROL
RECEIVER
IC702
GRID DRIVE
Q608, 609
FLUORESCENT INDICATOR TUBE DRIVER,
KEY CONTROL
IC601
SYSTEM CONTROLLER
IC501 (4/4)
LED DRIVER
IC701
BAND-PASS FILTER
IC603
Q601
+5V (LED)
BPF0
18
BPF2
19
BPF3
20
BPF4
GRID DRIVE
Q610
DET
DET
B.P.F.
21
ALL BAND REC IN
LINE
IN
1SIRCS
ROTARY
ENCODER
S701
ROTARY
ENCODER
S701
2JOG-A
9VOL-A
8JOG-B
10
72 70
VOL-B
XOUT XIN
B+ SWITCH
Q602, 603
LED DRIVE
Q607
KEY0 –KEY4
BPF1
F01
F04
F05
F06
F02
GR1
(Page 19)(Page 19)
I
(Page 17)
D
D604 –607, 611, 612,
D615 –621,
D623 –627, 631, 632,
D635 –638, 641, 700
SPEANA
L SEL 7
REC LED 75
LED DAT 5
LED SCK 3
LED LAT
DATA
CLK
4
13
14
15
43
I2C DATA
DATA, CLK
I2C CLK
IIC-DATA
IIC-CLK
RESET
RESET
17
79
78
29
WAKE UP WAKE UP
22
D-SW
S691
80
18
30
CD-POWER 5
POWER
Q906
2
73
16
14
13
12
L+R
11
16
17
4
6
11 –15
SEG1 –SEG23
45 –67
GR15, GR16
28 , 27
GR2 –GR14
42, 40 –29
17, 19 –22, 1, 3 –5, 7 –11
P1 –P5, P7, P9 –P16
S701
S601 –604, 606 –624, 626 –628,
S631 –637, 641 –647, 651 –659
S667 –671, 676 –682
05
S701
VOLUME
X601
12.5MHz
J
STB
LED DRIVE
Q606
DAILY LED 74 D602
DAILY
D603
REC
LED DRIVE
Q605
LED ECO 77
+5V (LED)
(PANEL SECTION B+)
+3.3V
MPEG VIDEO/AUDIO
RECODWE (IC505) B+
FLUORESCENT INDICATOR TUBE
FL601
D601
LID (CD)
OPEN/CLOSE
–35V
FLUORESCENT INDICATOR
TUBE DRIVER (IC601)
B–
D+5V (UNSW)
CD MECHANISM
CONTROLLER (IC502)
B+
Q905
Q914
VOLTAGE
SELECTOR
S901
A+5V (SW)
(VIDEO CD SECTION B+)
D+5V (SW)
CD STEREO/VIDEO CD
SECTION B+
AMS
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