Sony HCD-RV20 User manual

1
Ver 1.1 2003. 08
Model Name Using Similar Mechanism NEW
CD CD Mechanism Type CDM74-30BD62
Section Base Unit Name BU-30BD62
Optical Pick-up Name A-MAX.3
Tape Deck Model Name Using Similar Machanism NEW
Section Tape Transport Mechanism Type RV20: CWM43FF-13
RV50/RV60: CWM43RR-23
SERVICE MANUAL
E Model
HCD-RV20/RV50/RV60
Amplifier section
HCD-RV20:
The following measured at AC 120, 127, 220, 240 V,
50/60 Hz
DIN power output (rated):
80 + 80 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
100 + 100 watts (6 ohms at
1 kHz, 10% THD)
HCD-RV60:
Front speaker
The following measured at AC 120, 127, 220, 240 V,
50/60 Hz
DIN power output (rated):
160 + 160 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
200 + 200 watts (6 ohms at
1 kHz, 10% THD)
Music power output (reference):
400 + 400 watts (6 ohms at
1 kHz, 10% THD)
HCD-RV50:
The following measured at AC 120, 127, 220, 240 V,
50/60 Hz
DIN power output (rated):
115 + 115 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
140 + 140 watts (6 ohms at
1 kHz, 10% THD)
SPECIFICATIONS
Inputs
HCD-RV20:
GAME INPUT AUDIO L/R (phono jacks):
voltage 250 mV,
impedance 47 kilohms
GAME INPUT VIDEO (phono jack):
1 Vp-p, 75 ohms
MIC (phone jack): sensitivity 1 mV,
impedance 10 kilohms
Outputs
PHONES (stereo mini jack):
accepts headphones of
8 ohms or more
VIDEO OUT (phono jack):
max. output level
1 Vp-p, unbalanced, Sync
negative, load impedance
75 ohms
SPEAKER: accepts impedance of 6 to
16 ohms
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-877-378-02
2003H04-1
© 2003. 08
– Continued on next page –
COMPACT DISC DECK RECEIVER
•HCD-RV20/RV50/RV60 is the
tuner, deck, CD and amplifier
sectioninMHC-RV20/RV50/RV60. (Photo: HCD-RV50)

2
HCD-RV20/RV50/RV60
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 PUBLISHED BY SONY.
HCD-RV50/RV60:
MD (VIDEO) IN L/R (phono jacks):
voltage 450/250 mV,
impedance 47 kilohms
GAME INPUT AUDIO L/R (phono jacks):
voltage 250 mV,
impedance 47 kilohms
GAME INPUT VIDEO (phono jack):
1 Vp-p, 75 ohms
MIC (phone jack): sensitivity 1 mV,
impedance 10 kilohms
Outputs
PHONES (stereo mini jack):
accepts headphones of
8 ohms or more
VIDEO OUT (phono jack):
max. output level 1 Vp-p,
unbalanced, Sync
negative, load impedance 75 ohms
MD (VIDEO) OUT L/R (phono jacks):
impedance 1 kilohms
SPEAKER: accepts impedance of 6 to
16 ohms
SURROUND SPEAKER (HCD-RV60 only)
accepts impedance of 24
ohms
CD player section
System Compact disc and digital
audio system
Laser Semiconductor laser
(λ=780 nm)
Emission duration:
continuous
Frequency response 2 Hz – 20 kHz (±0.5 dB)
Wavelength 780 – 790 nm
Signal-to-noise ratio More than 90 dB
Dynamic range More than 90 dB
Video color system format
NTSC, PAL
Tape deck section
Recording system 4-track 2-channel stereo
Frequency response 50 – 13,000 Hz (±3 dB),
using Sony TYPE I
cassettes
Wow and flutter ±0.15% W.Peak (IEC)
0.1% W.RMS (NAB)
±0.2% W.Peak (DIN)
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range 87.5 – 108.0 MHz
Antenna FM lead antenna
Antenna terminals 75 ohms unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
Middle Eastern model: 531 – 1,602 kHz (with the tuning
interval set at 9 kHz)
Other models: 530 – 1,710 kHz (with the tuning
interval set at 10 kHz)
531 – 1,602 kHz (with the tuning
interval set at 9 kHz)
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz
Speaker
HCD-RV20:
Speaker system 3-way, 3-unit,
bass-reflex type
Speaker units
Woofer: 13 cm, cone type
Sub woofer: 13 cm, cone type
Tweeter: 5 cm, cone type
Nominal impedance 6 ohms
Dimensions (w/h/d) Approx. 240 ×325 ×243 mm
Mass Approx. 4.3 kg net per
speaker
Front speaker SS-RV990 for HCD-RV60/RV50:
Speaker system 3-way, 3-unit, bass-reflex
type
Speaker units
Sub Woofer: 15 cm, cone type
Woofer: 15 cm, cone type
Tweeter: 5 cm, cone type
Nominal impedance 6 ohms
Dimensions (w/h/d) Approx. 240 ×363 ×290 mm
Mass Approx. 4.7 kg net per
speaker
Surround speaker SS-RSV60 for HCD-RV60:
Speaker system 3-way, 3-unit, bass-reflex
type
Speaker units
Woofer: 13 cm, cone type
Tweeter: 5 cm, cone type
Super tweeter: 2 cm, dome type
Nominal impedance 24 ohms
Dimensions (w/h/d) Approx. 195 ×325 ×225 mm
Mass Approx. 2.3 kg net per
speaker
General
Power requirements
Saudi Arabian model: 120 – 127 V/220 V or
230 – 240 V AC,
50/60 Hz
Adjustable with voltage
selector
Thai model: 220 V AC, 50/60 Hz
Other models: 120 V, 220V or 230 –
240 V AC, 50/60 Hz
Adjustable with voltage
selector
Power consumption
HCD-RV20: 110 watts
HCD-RV50: 135 watts
HCD-RV60: 190 watts
Dimensions (w/h/d)
HCD-RV20: Approx. 280 ×325 ×407 mm
HCD-RV50/RV60: Approx. 280 ×325 ×407 mm
Mass
HCD-RV20: Approx. 8.5 kg
HCD-RV50: Approx. 9.0 kg
HCD-RV60: Approx. 11.5 kg
Supplied accessories: AM loop antenna (1)
Remote Commander (1)
Batteries (2)
FM lead antenna (1)
Speaker pads
HCD-RV20 (8)
HCD-RV50 (8)
HCD-RV60 (16)
Video cable (1)
Design and specifications are subject to change without
notice.

3
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
HCD-RV20/RV50/RV60
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
breakdown 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 component in this product is capable
of emitting radiation exceeding the limit for
Class 1.
Notes on Chip Component Replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
•Keep the temperature of soldering iron around 270°C during
repairing.
•Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
•Be careful not to apply force on the conductor when soldering
or unsoldering.
MODEL IDENTIFICATION
– BACK PANEL –
MODEL PARTS No.
RV20: E3, E15, SP, MY, PL 4-264-151-0s
RV20: EA 4-264-151-1s
RV50: E3, E15, SP, MY, PL 4-264-151-2s
RV50: EA 4-264-151-3s
RV60: EA 4-264-151-4s
RV60: E3, E15, SP, MY, PL 4-264-151-5s
RV20: TH 4-264-151-6s
RV50: TH 4-264-151-7s
RV60: TH 4-264-151-8s
•Abbreviation
E3 : 240 VAC area in E model
EA : Saudi Arabia model
MY : Malaysia model
SP : Singapore model
TH : Thai model
SETTING AND RELEASING THE CD DISC TRAY LOCK
FUNCTION
This set has a disc tray lock function to prevent discs for
demonstration at shops from theft. While this lock function is set,
the tray will not be delivered out even when the OPEN/CLOSE
button is pressed.
Setting method:
Press the OPEN/CLOSE button while pressing the STOP button.
After a few seconds, the message “LOCKED” will appear on the
fluorescent indicator tube with the tray locked.
Releasing method:
Just as the lock is set, press the OPEN/CLOSE button while
pressing the STOP button.
After a few seconds, the message “UNLOCKED” will appear with
the lock released.
PARTS No.

4
TABLE OF CONTENTS
HCD-RV20/RV50/RV60
1. GENERAL
HCD-RV20 Main Unit ............................................................ 5
HCD-RV20 Remote Control ................................................... 5
HCD-RV50/RV60 Main Unit .................................................. 6
HCD-RV50/RV60 Remote Control .........................................6
2. DISASSEMBLY
2-1. Case (Top) ........................................................................... 8
2-2. CD Door .............................................................................. 8
2-3. CD Mechanism Block .........................................................9
2-4. Front Panel Section ........................................................... 10
2-5. Tape Mechanism Deck ...................................................... 11
2-6. Panel Board, 1 Stream Led Board,
6 Stream Led Board, Remote Board ................................. 11
2-7. Jack Board ......................................................................... 12
2-8. Back Panel Section............................................................ 12
2-9. Main Board ....................................................................... 13
2-10. PowerAmp Board ............................................................. 13
2-11. Video Board, SW Board, Driver Board ............................. 14
2-12. CD Block Assy .................................................................. 14
2-13. Sensor Board ..................................................................... 15
2-14. Motor (TB) Board ............................................................. 15
2-15. Motor (LD) Board .............................................................16
2-16. BD Board .......................................................................... 16
3. DIAGRAMS
3-1. IC Pin Description............................................................. 17
3-2. Circuit Boards Location .................................................... 19
3-3. Printed Wiring Board –CD Mechanism Section (1/2)– .... 20
3-4. Schematic Diagram –CD Mechanism Section (1/2)– ....... 21
3-5. Printed Wiring Boards –CD Mechanism Section (2/2)– ... 22
3-6. Schematic Diagram –CD Mechanism Section (2/2)– ....... 23
3-7. Printed Wiring Board –Video Section– ............................. 24
3-8. Schematic Diagram –Video Section (1/2)– ....................... 26
3-9. Schematic Diagram –Video Section (2/2)– ....................... 27
3-10. Printed Wiring Board –Main Section– .............................. 28
3-11. Schematic Diagram –Main Section (1/3)– ........................ 29
3-12. Schematic Diagram –Main Section (2/3)– ........................ 30
3-13. Schematic Diagram –Main Section (3/3)– ........................ 31
3-14. Printed Wiring Boards –Panel Section– ............................ 32
3-15. Schematic Diagram –Panel Section– ................................ 33
3-16. Printed Wiring Boards –Jack Section–.............................. 34
3-17. Schematic Diagram –Jack Section– ..................................35
3-18. Printed Wiring Board –PowerAmp Section– ................... 36
3-19. Schematic Diagram –PowerAmp Section (1/2)– ............. 37
3-20. Schematic Diagram –PowerAmp Section (2/2)– ............. 38
3-21. Printed Wiring Board
–Transformer Section (HCD-RV20)– ............................... 39
3-22. Printed Wiring Board
–Transformer Section (HCD-RV50)– ............................... 40
3-23. Printed Wiring Board
–Transformer Section (HCD-RV60)– ............................... 41
3-24. Schematic Diagram –Transformer Section– ..................... 42
3-25. IC Block Diagrams............................................................ 43
4. EXPLODED VIEWS
4-1. Main Section ..................................................................... 46
4-2. Front Panel Section (1)...................................................... 47
4-3. Front Panel Section (2)...................................................... 48
4-4. Front Panel Section (3)...................................................... 49
4-5. Main Board Section .......................................................... 50
4-6. CD Mechanism Deck Section (1) ..................................... 51
4-7. CD Mechanism Deck Section (2) ..................................... 52
4-8. Optical Pick-up Section..................................................... 53
5. ELECTRICAL PARTS LIST ........................................ 54

5
HCD-RV20/RV50/RV60
SECTION 1
GENERAL This section is extracted
from instruction manual.
• HCD-RV20
Main Unit

6
HCD-RV20/RV50/RV60
• HCD-RV50/RV60
Main Unit

7
HCD-RV20/RV50/RV60
SECTION 2
DISASSEMBLY
Note : Disassemble the unit in the order as shown below.
2-1. CASE (TOP)
(Page 8)
2-2. CD DOOR
(Page 8)
SET
2-3. CD MECHANISM BLOCK
(Page 9)
2-8. BACK PANEL SECTION
(Page 12)
2-9. MAIN BOARD
(Page 13)
2-12. CD BLOCK ASSY
(Page 14)
2-16. OPTICAL PICK-UP,
BD BOARD
(Page 16)
2-10. POWER AMP BOARD
(Page 13)
2-4. FRONT PANEL SECTION
(Page 10)
2-5. TAPE MECHANISM DECK
(Page 11)
2-6. PANEL BOARD,
1 STREAM LED BOARD,
6 STREAM LED BOARD,
REMOTE BOARD
(Page 11)
2-13. SENSOR BOARD
(Page 15)
2-14. MOTOR (TB) BOARD
(Page 15)
2-15. MOTOR (LD) BOARD
(Page 16)
2-11. VIDEO BOARD,
SW BOARD,
DRIVER BOARD
(Page 14)
2-7. JACK BOARD
(Page 12)

8
HCD-RV20/RV50/RV60
2-2. CD DOOR
Note : Follow the disassembly procedure in the numerical order given.
2-1. CASE (TOP)
case (side-R)
case (side-L)
5
qd
qs
qs
q;
6
two screws (case 3 TP2)
qf case (top)
8 screw
(+BVTP 3
× 10)
3 screw
(+BVTP 3
× 10
)
9 screw
(+BVTP 3
× 10)
4 screw
(+BVTP 3
× 10)
1 two screws
(case 3 TP2)
qa two screws (+BVTP 3 × 10)
7 screw (case 3 TP2)
2 screw (case 3 TP2)
2 Pull-out the disc tray.
4 CD door
1 Turn the pulley to the direction of arrow.
pulley
Front panel side
CD mechanism deck (CDM74-30BD62)
3

9
HCD-RV20/RV50/RV60
2-3. CD MECHANISM BLOCK
2 CN701
1 CN301
8 CN312
(flat type)
6
7
3
three screws
(+BVTP 3
× 10)
9 CD mechanism block
5 screw
(+BVTP 3
× 10
)
4 screw
(+BVTP 3
× 10)
MAIN board
MAIN board

10
HCD-RV20/RV50/RV60
2-4. FRONT PANEL SECTION
1 CN003
2 CN304
(flat type)
5 connector
6 connector
4 CN308
3 CN311
(flat type)
TRANS board
9 three screws (+BVTP 3 × 8 )
0 front panel section
8 screw
(+BVTP 3
× 8
)
7 screw
(+BVTP 3
× 8)

11
HCD-RV20/RV50/RV60
2-5. TAPE MECHANISM DECK
2 two screws
(+BVTP 2.6
× 8)
4 two screws
(+BVTP 2.6 × 8
)
3 three screws
(+BVTP 2.6
× 8)
5 tape mechanism deck
1 connector
2-6. PANEL BOARD, 1 STREAM LED BOARD, 6 STREAM LED BOARD, REMOTE BOARD
1 volume knob
7 PANEL board
9 1 STREAM LED board (RV20)
6 STREAM LED board (RV50/RV60)
qa REMOTE board
0 CN607
2 three screws
(+BVTP 2.6
× 8)
3 two screws
(+BVTP 2.6
× 8)
4 two screws
(+BVTP 2.6
× 8
)
8 two screws
(+BVTP 2.6
× 8)
6 two screws
(+BVTP 2.6
× 8)
5 three screws
(+BVTP 2.6
× 8)

12
HCD-RV20/RV50/RV60
2-8. BACK PANEL SECTION
6 back panel section
chassis section
3 two screws
(+BVTP 3
× 10)
4 three screws
(+BVTP 3
× 10)
1 CN101
(flat type)
2 CN303
5
2-7. JACK BOARD
1 two screws
(+BVTP 2.6
× 8)
4 shield plate
6 JACK board
5 two mic knobs
2 screw
(+BVTP 3
× 8)
3 screw
(+BVTP 3
× 8)

13
HCD-RV20/RV50/RV60
2-9. MAIN BOARD
2 MAIN boar
d
1 two screws
(+BVTP 3
× 10)
MAIN board
2-10. POWER AMP BOARD
6 POWER AMP boar
d
1 CN902
2 screw
(+BVTT 3
× 10)
two claws
4 screw
(+BVTP 3
× 8)
5 screw
(+BVTP 3
× 8)
3 screw
(+BVTT 3
× 10)

14
HCD-RV20/RV50/RV60
2-12. CD BLOCK ASSY
0
4
two coil springs
(insulator)
8 two coil springs
(insulator)
5 two insulators
(BU-30)
9 two insulators
(BU-30)
6 two screws
(BVTT M2.6)
2 holder (30) assy
7 two stoppers (BU)
qa CD block assy
1 floating screw
(+PTPWH M2.6)
3 two floating screws
(+PTPWH M2.6)
2-11. VIDEO BOARD, SW BOARD, DRIVER BOARD
9 DRIVER board
3 VIDEO boar
d
5 SW board
6 CN704
7 CN703
0 CN702 (flat type)
1 CN101 (flat type)
8 two screws
(+BTTP (M2.6))
4 screw
(+BTTP (M2.6))
2 two screws
(+BVTP 3
× 10)

15
HCD-RV20/RV50/RV60
2-13. SENSOR BOARD
2 tray
3 belt (table)
5 pulley (table)
8 screw
(+BTTP (M2.6))
9 SENSOR board
7 gear (geneva)
0 CN731
1 floating screw
(+PTPWH M2.6)
6 floating screw
(+PTPWH M2.6)
4 floating screw
(+PTPWH M2.6)
2-14. MOTOR (TB) BOARD
4 Remove the two solderings of motor.
3 MOTOR (TB) board
5 table motor assy (M741)
2 two screws
(+BTTP (M2.6))
1

16
HCD-RV20/RV50/RV60
2-16. BD BOARD
1 CN102 (flat type)
3 Remove the two solderings of motor.
4 BD board
2 Remove the two solderings of motor.
2-15. MOTOR (LD) BOARD
4 Remove the two solderings of motor.
3 MOTOR (LD) board
1 belt (loading)
5 loading motor assy (M751)
2 two screws
(+BTTP (M2.6))

17
HCD-RV20/RV50/RV60
SECTION 3
DIAGRAMS
3-1. IC PIN DESCRIPTION
• IC601 LC876696B-5IG9 (SYSTEM CONTROL, FLD CONTROL) (PANEL BOARD) (RV20)
• IC601 LC876696B-5IH0 (SYSTEM CONTROL, FLD CONTROL) (PANEL BOARD) (RV50/RV60)
Pin No. Pin Name I/O Pin Description
1SYS MUTE O System mute signal output
2BU1924 DATA I Not used in this set. (Connected to ground.)
3PWR DOWN I Power down signal input
4LC78646 RESET O CD reset signal output
5 LC78646 CE O CD CE signal output
6LC78646 CE (MP3) O CD CE (MP3) signal output
7M61519 CLK O Clock signal output
8BU2099FV LCK O LCK signal output
9LC72121 CE O CE signal output
10 LC78684 SYNC I SYNC signal input
11 RESET I Reset signal input from the IC603
12 XT1 I Oscillater connect pin (32.768 kHz)
13 XT2 O Oscillater connect pin (32.768 kHz)
14 VSS1 — Ground pin
15 CF1 I Ceramic vibrator connect pin (8.64 MHz)
16 CF2 O Ceramic vibrator connect pin (8.64 MHz)
17 VDD — Power supply pin (+3.3 V)
18 TAPEA STAT I Tape A start signal input
19 TAPE B STAT I Tape B start signal input
20 CD ENCODER I CD encoder switch signal input
21 SW ON/OFF SENSOR I Switch control on/off signal input
22 STREAM IN I Stream in signal input
23 VACS I VACS signal input
24 KEY2 I Key signal input 2
25 KEY1 I Key signal input 1
26 KEY0 I Key signal input 0
27 PROTECTOR (HOLD) I Protector (Hold) signal input
28 REMOCON IN I Remote control signal input from the RM601
29 BU1924 CLK I Not used in this set. (Connected to ground.)
30 – 41 G12 – G1 O FLD control signal output
42 – 45 P1 – P4 O FLD control signal output
46 VDD3 — Power supply pin (+3.3 V)
47 – 50 P5 – P8 O FLD control signal output
51 VPP — Ground pin
52 – 55 P9 – P12 O FLD control signal output
56 SW1 (a) P13 O FLD control signal output
57 SW2 (b) P14 O FLD control signal output
58 SW3 (c) P15 O FLD control signal output
59 SW4 (d) P16 O FLD control signal output
60 SW5 P17 O FLD control signal output
61 SW6 P18 O FLD control signal output
62 SW7 P19 O FLD control signal output
63 SW8 P20 O FLD control signal output
64, 65 P21, P22 O FLD control signal output
66 ENTER LED O Not used in this set. (Open)
67 MD/VIDEO LED O RV20: Not used. (Open) RV50/RV60: GAME LED (LED610) drive signal output
68 GAME LED O RV20: GAME LED (LED612) drive signal output
RV50/RV60: MD/VIDEO LED (LED612) drive signal output
69 TAPE LED O TAPE A/B LED (LED609) drive signal output
70 TUNER LED O TUNER/BAND LED (LED608) drive signal output

18
HCD-RV20/RV50/RV60
Pin No. Pin Name I/O Pin Description
71 CD LED O CD LED (LED607) drive signal output
72 VDD4 — Power supply pin (+3.3 V)
73 CD VDD — CD power supply pin
74 TUNER TUNED I Tuner tuning signal input from the TU701 (tuner pack)
75 TUNER STEREO I Tuner stereo signal input from the TU701 (tuner pack)
76 CD DRF I CD DRF signal input
77 CD WRQ I CD WRQ signal input
78 CD NUMBER SENSOR I CD number sensor signal input
79 TAPEAMS IN I TapeAMS signal input
80 VR ENCODER A I VR encoder (VR601) signal input
81 VR ENCODER B I VR encoder (VR601) signal input
82 TAPE REELA I Tape reel A signal input
83 TAPE REEL B I Tape reel B signal input
84 MODE SW IN I Mode switch signal input
85 STREAM 1 LED O Stream LED drive signal output
86 STREAM 2 LED/CD MUTE O RV20: CD mute signal output RV50/RV60: Stream LED drive signal output
87 STREAM 3 LED O RV20: Not used. (Open) RV50/RV60: Stream LED drive signal output
88 STREAM 4 LED/ ORV20: Mechanism power control signal output “L”: ON, “H”: OFF
MECHA VCC RV50/RV60: Stream LED drive signal output
89 VSS2 — Ground pin
90 VDD2 — Power supply pin (+3.3 V)
91 STREAM 5 LED/ ORV20: Tape SOL A control signal output “L”: ON, “H”: OFF
TAPE SOLA RV50/RV60: Stream LED drive signal output
92 STREAM 6 LED/ ORV20: Tape SOL B control signal output “L”: ON, “H”: OFF
TAPE SOL B RV50/RV60: Stream LED drive signal output
93 POWER LED O POWER LED (LED614) drive signal output
94 POWER RELAY O Power relay signal output
95 LC72121/M61529/ OSerial data signal output
BU2099FV DO
96 LC72121 DI I Serial data signal input
97 LC72121/BU2099FV CLK O Serial clock signal output
98 LC78646/LC78684 DO O Serial data signal output
99 LC78646/LC78684 DI I Serial data signal input
100 LC78646/LC78684 CLK O Serial clock signal output

19 19
HCD-RV20/RV50/RV60
3-2. CIRCUIT BOARDS LOCATION
MAIN board
DRIVER board
SW board
VIDEO board
MOTOR (LD) board
MOTOR (TB) boar
d
VIDEO OUT board
BD board
SENSOR board
TRANS board
POWER AMP board
JACK board
PANEL board
REMOTE board
1 STREAM LED board (RV20)
6 STREAM LED board (RV50/RV60)
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
for schematic diagram:
•All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
•All resistors are in Ωand 1/4W or less unless otherwise
specified.
•%: indicates tolerance.
•f: internal component.
•C: panel designation.
•A: B+ Line.
•B: B– Line.
•H: adjustment for repair.
•Voltage and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
•Voltagesare taken with a VOM (Inputimpedance10MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
no mark : FM
():CD
[]:TAPE
•Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
•Circled numbers refer to waveforms.
•Signal path.
F: FM
f: AM
E: PB (DECK A)
d: PB (DECK B)
G: REC (DECK B)
J: CD
c: digital out
L: VIDEO
for printed wiring boards:
•X: parts extracted from the component side.
•Y: parts extracted from the conductor side.
•x: parts mounted on the conductor side.
•: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Note: The components identified by mark 0or dotted line
with mark 0are critical for safety.
Replace only with part number specified.
•Waveforms
– BD Board –
1
2
IC103 6(A), 8(C)
Approx.
160mVp-p
3
4
IC103 7(B), 9(D)
Approx.
160mVp-p
IC103 qg (RFAC)
Approx.
1Vp-p
IC103 wk (RFDCO)
Approx.
0.6Vp-p
– VIDEO Board –
1
33.8688MHz
IC505 <zb/> (XTAO)
1.1Vp-p
2
29MHz
IC505 <x/n> (CLKA)
0.6Vp-p
– PANEL Board –
1
2
8.64MHz
IC601 qg (CF1)
32.768kHz
IC601 qs (XT1)
1.2Vp-p
1Vp-p

2020
HCD-RV20/RV50/RV60
3-3. PRINTED WIRING BOARD — CD MECHANISM SECTION (1/2) — • Refer to page 19 for Circuit Boards Location.
(Page 24)
1
A
B
C
D
E
F
G
H
234567891011 12 13 14
C165
C113
R227
C108
C115
R122
C114
C111
C101
R228
C120
C102
C166
C163
C182
C164
C117
C153
R126
R229
R117
C109
C119
C104
C112
R125
C188
C103
R234
R235
C151
IC103
CN102
Q101
R176
R111
C110
R109
R113
Q102
R102
R179
R123
R118
C213
R151
R236
IC102
R105
R103
R120
C107
R104
R124
R231
C118
R114
R152
R112
CN101
D101
M102
M101
Ref. No. Location
D101 D-9
IC102 B-11
IC103 E-9
Q101 F-8
Q102 C-8
• Semiconductor
Location