Sony HCD-RV555 Service Manual

HCD-RV555

SERVICE MANUAL

Ver. 1.2 2008.02

• HCD-RV555 is the tuner, deck, CD
and amplifier section in MHC-RV555.

CD
Section

TAPE
Section

E Model

Model Name Using Similar Mechanism HCD-RV55

CD Mechanism Type CDM74KS-KBD49

Base Unit Name BU-K4BD49

Optical Pick-up Name KSM-213DHAP

Model Name Using Similar Mechanism HCD-RV55

Tape Mechanism Type CWM43RR602

Amplifier section

The following measured at AC 120, 127, 220, 240 V
50/60 Hz
DIN power output (rated): 120 + 120 watts

(6 ohms at 1 kHz, DIN)

Continuous RMS power output (reference):

150 + 150 watts
(6 ohms at 1 kHz, 10% THD)

Inputs
VIDEO/SAT IN (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, 75ohms

MIC (phone jack): sensitivity 1 mV,

impedance 10 kilohms

SPECIFICATIONS

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

VIDEO/SAT OUT (phono jacks)

impedance 1 kilohm

SPEAKER: accepts impedance of 6 to

16 ohms

CD player section

System Compact disc and digital

audio system

Laser Semiconductor laser

(λ=770 – 810 nm)
Emission duration:
continuous

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 –

9-887-231-03

2008B04-1
© 2008.02

MINI Hi-Fi COMPONENT SYSTEM

Sony Corporation

Audio Business Group
Published by Sony Techno Create Corporation

HCD-RV555

Tape deck section

Recording system 4-track 2-channel, stereo
Frequency response 50 – 13,000 Hz (±3 dB),

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 530 – 1,710 kHz

Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz

using Sony TYPE I cassettes

(50 kHz step)

(with the tuning interval
set at 10 kHz)
531 – 1,602 kHz
(with the tuning interval
set at 9 kHz)

General

Power requirements 120 V, 220 V or

Power consumption 155 watts
Dimensions (w/h/d) incl.projecting parts and controls
Amplifier/Tuner/Tape/CD Section:

Mass Approx. 10.6 kg

Supplied accessories: Remote Commander (1)

Design and specifications are subject to change without
notice.

230 – 240 V AC, 50/60 Hz
Adjustable with voltage
selector

Approx. 280 × 327 × 425 mm

R6 (Size AA) batteries (2)
AM loop antenna (1)
FM lead antenna (1)
Speaker pads (8)
Video cable (1)

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

HCD-RV555

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.

UNLEADED SOLDER

Boards requiring use of unleaded solder are printed with the lead­free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with

the lead free mark due to their particular size.)

: LEAD FREE MARK

Unleaded solder has the following characteristics.

• Unleaded solder melts at a temperature about 40°C higher than

ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if the

heated tip is applied for too long, so be careful!

• Strong viscosity

Unleaded solder is more viscous (sticky, less prone to flow) than
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.

• Usable with ordinary solder

It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.

NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick­up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.

Laser component in this product is capable
of emitting radiation exceeding the limit for
Class 1.

This appliance is
claassified as a CLASS 1
LASER product. This
label is located on the
rear exterior.

CAUTION

Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.

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 breakdown 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.

3

HCD-RV555

MODEL IDENTIFICATION

– MODEL NUMBER LABEL –

Par t No.

MODEL PARTS No.

RV555: E3, E15 2-685-237-0s

RV555: SP 2-685-238-0s

•Abbreviation
E3 : 240 V AC area in E model
E15 : Iran model
SP : Singapore model

PLAYABLE DISC

You can playback the following discs on this system. The other
discs cannot be played back.

List of playable discs

Format of discs Disc logo

VIDEO CDs

Audio CDs

CD-R/CD-RW
(audio data/MP3
files)

4

TABLE OF CONTENTS

HCD-RV555

1. SERVICE NOTES

1-1. Service Position of CD Mechanism Deck ....................... 6

1-2. Service Position of Amp Board ....................................... 6

2. GENERAL

List of Button Locations and Reference Pages ............... 7

3. DISASSEMBLY

3-1. Case (Top) ....................................................................... 10

3-2. CD Door .......................................................................... 10

3-3. Front Panel Section ......................................................... 11

3-4. CD Mechanism Deck ...................................................... 11

3-5. Tape Mechanism Deck, Microphone Jack Board ............ 12

3-6. Panel Board ..................................................................... 12

3-7. Back Panel Section, Sub Transformer Board .................. 13

3-8. Transformer Board .......................................................... 13

3-9. Main Board ...................................................................... 14

3-10. Amp Board ...................................................................... 14

3-11. BD Board ......................................................................... 15

3-12. VCD Connect Board, VMP Board .................................. 15

3-13. Driver Board, SW Board ................................................. 16

3-14. Base Unit ......................................................................... 16

3-15. Sensor Board ................................................................... 17

3-16. Motor (TB) Board ........................................................... 17

3-17. Motor (LD) Board ........................................................... 18

4. TEST MODE ............................................................... 19

5. ELECTRICAL ADJUSTMENTS .......................... 23

6. DIAGRAMS

6-1. Block Diagram –CD Servo Section– ............................... 25

6-2. Block Diagram –Audio/Video CD Section– ................... 26

6-3. Block Diagram –Main Section– ...................................... 27

6-4. Block Diagram –Panel/Power Supply Section– .............. 28

6-5. Circuit Boards Location .................................................. 29

6-6. Printed Wiring Board –CD Mechanism Section (1/2)–... 32

6-7. Schematic Diagram –CD Mechanism Section (1/2)– ..... 33

6-8. Printed Wiring Boards –CD Mechanism Section (2/2)– .. 34

6-9. Schematic Diagram –CD Mechanism Section (2/2)– ..... 35

6-10. Printed Wiring Board –VCD Connect Section– .............. 36

6-11. Schematic Diagram –VCD Connect Section– ................. 36

6-12. Printed Wiring Board –VMP Section– ............................ 37

6-13. Schematic Diagram –VMP Section (1/2)– ...................... 38

6-14. Schematic Diagram –VMP Section (2/2)– ...................... 39

6-15. Schematic Diagram –Main Section (1/2)– ...................... 40

6-16. Schematic Diagram –Main Section (2/2)– ...................... 41

6-17. Printed Wiring Board –Main Section– ............................ 42

6-18. Printed Wiring Boards –Panel Section– .......................... 43

6-19. Schematic Diagram –Panel Section (1/2)– ...................... 44

6-20. Schematic Diagram –Panel Section (2/2)– ...................... 45

6-21. Printed Wiring Boards –Jack Section– ............................ 46

6-22. Schematic Diagram –Jack Section– ................................ 47

6-23. Printed Wiring Board –Power Section (1/2)– .................. 48

6-24. Printed Wiring Boards –Power Section (2/2)– ................ 49

6-25. Schematic Diagram –Power Section– ............................. 50

7. EXPLODED VIEWS

7-1. Main Section .................................................................... 61

7-2. Front Panel Section (1) .................................................... 62

7-3. Front Panel Section (2) .................................................... 63

7-4. Front Panel Section (3) .................................................... 64

7-5. Main Board Section ......................................................... 65

7-6. CD Mechanism Deck Section (1) .................................... 66

7-7. CD Mechanism Deck Section (2) .................................... 67

7-8. CD Mechanism Deck Section (3) .................................... 68

7-9. Base Unit Section ............................................................ 69

8. ELECTRICAL PARTS LIST .................................. 70

5

HCD-R555

k

SECTION 1

SERVICING NOTES

1-1. SERVICE POSITION OF CD MECHANISM DECK

Remove the CD mechanism deck and place it on top of the pedestal as shown.
Inspect the BD board in this set up.

BD board

CD mechanism dec

1-2. SERVICE POSITION OF AMP BOARD

To inspect the POWER board, turn both of the front panel
and the CD mechanism deck so that the left side of the product faces down.

CD mechanism deck

front panel

AMP board

6

SECTION 2

Illustrati

w

waw

w

w

w

w

w

GENERAL

List of button locations and reference pages

HCD-RV555

This section is extracted
from instruction manual.

How to use this page

Use this page to find the location of buttons and other
parts of the system that are mentioned in the text.

Main unit

ALPHABETICAL ORDER

A — O P — Z

ALBUM + qk (12, 15, 22)
ALBUM – wj (12, 15, 22)
CD ej (9, 11, 14, 15, 19, 22, 23)
CD SYNC wl (22)
Deck A e; (21)
Deck B qj (21, 22, 23, 27, 29)
DISC 1 – 3 q; (12, 15, 39)
DISC SKIP/EX-CHANGE qs

(11, 12, 15, 22)

Disc tray 9 (11)
DISPLAY 2 (30, 31)
Display window 5
ECHO LEVEL ws (27)
EFFECT ON/OFF 8 (24, 25)
ENTER qa (15, 18, 25)
EQ BAND 7 (25)
GAME ef (23, 25, 35)
GAME INPUT AUDIO L/R jacks

wg (23, 34)

GAME INPUT VIDEO jack wh

(34)

GAME MIXING wk (26)
GROOVE 8 (24)
ILLUMINATION 3 (32)
KARAOKE/MPX qh (26)
MIC jack wf (26)
MIC LEVEL wd (26)
Operation Dial

(–

l L) 6 (

EQ +/

15, 22, 25)

12,

P FILE qd (25)
PHONES jack ql
PLAY MODE ea (12, 15, 21, 22,

23, 27, 39)

Power illuminator w; (32)
PRESET EQ qd (24)
REC PAUSE/ START wl (22, 23,

26, 27)

Remote sensor 4
SURROUND 8 (25)
TAP E A /B eg (21, 22, 23, 27)
TUNER/BAND eh (18, 19, 23)
TUNING MODE ea (18, 19, 39)
TUNING + qk (18, 19)
TUNING – wj (1
VIDEO/SAT* ed (23, 35)
VOLUME control wa

12345 6 78 9

ej
eh
eg
ef
ed

es
ea
e;
wl

8, 19)

j

ALBUM

S

s

TUNING TUNING

on number

r

TA PE A / B eg (21, 22, 23, 27)

Name of button/part Reference page

RR

BUTTON DESCRIPTIONS

?/1 (on/standby) 1 (8, 19, 30,

35, 37, 39)

Z (eject) qf (11)
PUSH Z (deck B) (eject) qg (21)

M (fast forward) qk (8, 12, 22)
H or hH* (play) qk (12, 21,

22)

X (pause) wj (8, 12, 22)
x (stop) wj (12, 22, 27, 39)
m (rewind) wj (8, 12, 22)
Z PUSH (deck A) (eject) es (21)

*MHC-RV555/RV55 only

q;

qa

J

ALBUM

H

h

qs
qd
qf
qg
qh
qj
qk

ql

46

wk

j

GB

g

d

h

f

;

s

7

HCD-RV555

Remote control

ALPHABETICAL ORDER

A — M

ALBUM +/– qa (12, 15)
CD wa (11, 15)
CLEAR qj (16)
CLOCK/TIMER SELECT wh

(29, 30)

CLOCK/TIMER SET wh (10, 28,

29)

DISC SKIP q; (12, 15)
DISPLAY 3 (30, 31)
ENTER qs (10, 15, 18, 28, 29)
EQ qh (24)
FM MODE 2 (20)
FUNCTION 4 (11, 14, 15, 18,

19)

KARAOKE/MPX qg (26)

N — Z

NEXT ql (14)
Number buttons w; (13, 14, 16)
ON SCREEN 6 (32)
PLAY MODE wf (12, 15, 21)
PREV ql (14)
REPEAT 2 (15)
SELECT 9
SLEEP wg (28)
SPECIAL MENU 7 (16)
TA PE ws
TUNER BAND 5 (18, 19)
TUNER MEMORY wd (18)
TUNING MODE wf (18, 19)
VOLUME +/– qf (28)

wh
wg
wf
wd
ws
wa

BUTTON DESCRIPTIONS

?/1 (on/standby) 1 (8, 29)
m/M (rewind/fast forward)

8 (12, 22)

N (play) 9 (12, 21)
X (pause) 9 (12, 22)
x (stop) 9 (12, 22)

KEY CONTROL
RETURN O qk (14)
+/– (tuning) ql (18)
./> (go back/go forward)

ql (10, 12, 22)

1
2
3

4
5

#/2

qd (27)

Additional Information

w;

ql

qk
qj
qh
qg

6

7

8

9

q;

qa
qs

qd

qf

47

GB

8

Note: Disassemble the unit in the order as shown below.

SET

3-1. CASE (TOP)

(Page 10)

3-2. CD DOOR

(Page 10)

3-3. FRONT PANEL SECTION

(Page 11)

HCD-RV555

SECTION 3

DISASSEMBLY

3-4. CD MECHANISM DECK

(Page 11)

3-12. VCD CONNECT BOARD,

VMP BOARD
(Page 15)

3-13. DRIVER BOARD,

SW BOARD
(Page 16)

3-7. BACK PANEL SECTION,

SUB TRANSFORMER BOARD
(Page 13)

3-5. TAPE MECHANISM DECK,

MICROPHONE JACK BOARD

(Page 12)

3-11. BD BOARD

(Page 15)

3-14. BASE UNIT

(Page 16)

3-6. PANEL BOARD

(Page 12)

3-15. SENSOR BOARD

(Page 17)

3-16. MOTOR (TB) BOARD

(Page 17)

3-17. MOTOR (LD) BOARD

(Page 18)

3-8. TRANSFORMER BOARD

(Page 13)

3-9. MAIN BOARD

(Page 14)

3-10. AMP BOARD

(Page 14)

9

HCD-RV555

Note: Follow the disassembly procedure in the numerical order given.

3-1. CASE (TOP)

qf

qh

case

(top)

7

two

screws

(case 3 TP2)

qs

case (side-L)

9

screw

(+BVTP 3

×

qg

10)

qa

qd

two

screws

(+BVTP 3

qf

5

×

10)

6

case (side-R)

8

screw

(case 3 TP2)

3-2. CD DOOR

CD mechanism deck (CDM74)

1

Turn the pulley to the direction of the arrow.

pulley

0

screw

(+BVTP 3

×

10)

Front panel side

3

four claws

2

(case 3 TP2)

4

CD door

3

screw

(+BVTP 3

1

two

screws

(case 3 TP2)

4

screw

(+BVTP 3

screw

×

×

10)

10)

10

2

Pull-out the disc tray.

3-3. FRONT PANEL SECTION

qa

qg

CN301 (3P)

1

CN805 (2P)

3

wire (flat type) (11 core)
(CN882)

8

screw
(+BVTP 3

×

10)

4

screw
(+BVTP 3

CN304 (8P)

qf

screw
(+BV 3 (3-CR))

×

8)

5

screw (+BVTP 3

HCD-RV555

×

8)

9

qh

front panel section

3-4. CD MECHANISM DECK

qd

CN103 (8P)

0

CN309 (5P)

2

wire (flat type) (29 core)
(CN302)

6

three

screws

(+BVTP 3

4

CD mechanism deck

×

qs

CN112 (3P)

7

screw (+BVTP 3

8)

×

10)

1

three

(+BVTP 3

screws

×

10)

MAIN board

MAIN board

3

CN883 (11P)

2

CN701 (12P)

11

HCD-RV555

)

)

3-5. TAPE MECHANISM DECK, MICROPHONE JACK BOARD

4

two MIC knobs

1

wire (flat type) (13 core)

jack bracket

3

tape mechanism deck

2

six

screws

(+BVTP 2.6 (3CR)

7

MICROPHONE JACK board

3-6. PANEL BOARD

4

seven

claws

6

two

screws

(+BVTP 2.6 (3CR))

6

CN604 (6P)

5

two

screws

(+BVTP 2.6 (3CR))

2

eight

screws

(+BVTP 2.6 (3CR)

12

5

7

PANEL board

CN605 (5P)

1

wire (flat type) (13 core)

3

two

screws

(+BVTP 2.6 (3CR))

3-7. BACK PANEL SECTION, SUB TRANSFORMER BOARD

)

qa

SUB TRANSFORMER board

3

CN901 (2P)

0

two

screws

×

10)

9

5

CN308 (3P)

CN906 (3P)

2

1

CN904 (4P)

(+BVTP 3

qs

back panel section

7

two

(+BVTP 3

8

6

HCD-RV555

screws

×

screw
(+BVTP 3

two

(+BVTP 3

×

screws

×

10)

10)

10

3-8. TRANSFORMER BOARD

6

TRANSFORMER board

1

CN905 (5P)

4

wire (flat type) (11 core)
(CN101)

5

four

(screw)

3

(+BV 3 (3-CR))

screws

screw

2

4

earth wire

CN907 (10P)

13

HCD-RV555

d

3-9. MAIN BOARD

1

CN907 (10P)

4

MAIN boar

MAIN board

3-10. AMP BOARD

4

screw
(+BV 3 (3

6

two

(transistor)

8

AMP

screws

board

-

CR))

3

screw
(+BVTP 3

×

14)

3

2

two

(+BVTP 3

CN441

screws

5

×

8)

2

two

screws

×

(+BVTT 4

7

heat sink

8)

14

1

CN905 (5P)

3-11. BD BOARD

)

5

Remove the four solders.

1

wire (flat type) (29 core)
(CN101)

3

screw
(+BVTP 2.6

6

BD

4

gap tube

board

× 8

)

2

wire (flat type) (16 core
(CN102)

HCD-RV555

3-12. VCD CONNECT BOARD, VMP BOARD

1

wire (flat type) (19 core)
(CN881)

2

two

screws

(+BVTP 2.6 (3CR))

3

VCD CONNECT

board

4

wire (flat type) (29 core)
(CN101)

5

two

(+BVTP 2.6

screws

6

(3CR)

VMP

)

board

15

HCD-RV555

3-13. DRIVER BOARD, SW BOARD

1

two

(+BTTP (M2.6))

4

DRIVER

2

wire (flat type) (5 core)
(CN702)

screws

board

3

CN703 (4P)

5

screw
(+BTTP (M2.6))

6

SW board

3-14. BASE UNIT

7

base unit

(BU-K4BD49)

6

three

insulators

5

three

(insulator)

coil springs

3

insulator

2

coil spring

(insulator)

1

floating

(+PTPWH M2.6)

screw

16

4

three floating

(+PTPWH M2.6)

screws

3-15. SENSOR BOARD

2

t

ray

1

floating

(+PTPWH M2.6)

6

floating

(+PTPWH M2.6)

7

g

screw

8

(+BTTP (M2.6))

screw

ear (geneva)

s

crew

0

SENSOR board

9

CN731 (3P)

3

b

elt (table)

4

floating

(+PTPWH M2.6)

5

screw

p

ulley (table)

HCD-RV555

3-16. MOTOR (TB) BOARD

table assy

2

stopper

4

stopper

1

7

t

able motor assy (M741)

3

wire (flat type) (5 core)
(CN742)

8

MOTOR (TB) board

6

Remove the two solders of motor.

5

two

screws

(+BTTP (M2.6))

17

HCD-RV555

3-17. MOTOR (LD) BOARD

4

Remove the two solders of motor.

5

l

oading motor assy (M751)

2

two

screws

(+BTTP (M2.6))

3

MOTOR (LD) board

1

b

elt (loading)

18

SECTION 4

TEST MODE

HCD-RV555

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 the I/1 button to turn the power ON.

2. Press three buttons of x , [PLAY MODE/TUNING MODE] and
[DISC 1] simultaneously.

3. The message “COLD RESET” is displayed on the fluorescent
indicator tube momentarily, then becomes standby states.

AM TUNING INTERVAL CHANGE-OVER

A step of AM tuning interval can be changed over between 9 kHz
and 10 kHz.

Procedure:

1. Press the I/1 button to turn the power on.

2. Press the [TUNER/BAND] button to select “AM”.

3. Press the I/1 button to turn the power off.

4. Press two buttons of [PLAY MODE/TUNING MODE] and I/1
simultaneously.

5. The message “AM 9K STEP” or “AM 10K STEP” is displayed
on the fluorescent indicator tube, and thus the channel step is
changed over.

CD SHIP (LOCK) 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 I/1 button to turn the power on.

2. Press the [CD] button to select “CD”.

3. Press two buttons of [CD] and I/1 simultaneously.

4. The message “LOCK” is displayed on the fluorescent indicator
tube, and the CD ship mode is set.

CD SHIP (LOCK) MODE & COLD RESET

This mode is used to perform CD chip (lock) mode and cold reset
simultaneously.

Procedure:

1. Press the I/1 button to turn the power on.

2. Press the [CD] button to select “CD”.

3. Press three buttons of x , [CD] and I/1 simultaneously.

4. The message “COLD RESET” is displayed on the fluorescent
indicator tube momentarily, then becomes standby states.

CHANGE-OVER FUNCTION OF SAT/VIDEO

This mode is used to enable function of external input to change
over between SAT and VIDEO.

Procedure:

1. Press the I/1 button to turn the power on.

2. Press two buttons of VIDEO/SAT and I/1 simultaneously.

3. The message “SAT” or “VIDEO” is displayed on the
fluorescent indicator tube, and the function of external input
is changed over.

CD TRAY LOCK MODE

This mode is used to unable to take sample disc out of tray in the
shop.

Procedure:

1. Press the

2. Press the [CD] button to select “CD”.

3. Set disc on the CD tray, press two buttons of
seconds.

4. The message “LOCKED” is displayed on the fluorescent
indicator tube and the CD tray is locked. (Even if pressing
the Z button, the message “LOCKED” is displayed on the
fluorescent indicator tube and the CD tray is locked)

5. To release from this mode, press two buttons of x and Z for
5 seconds.

6. The message “UNLOCKED” is displayed on the fluorescent
indicator tube and the CD tray is unlocked.

I/1 button to turn the power on.

x and Z for 5

AMP TEST MODE

This mode is used to display the parameter of amplifier IC and
display the VACS status.

Procedure:

1. Press the I/1 button to turn the power on.

2. Press three buttons of x , [PRESET EQ] and [PLAY MODE/
TUNING MODE] simultaneously.

3. When the AMP test mode is activated, the message “AMP
TEST IN” is displayed on the fluorescent indicator tube
momentarily, then amplifier adjustment mode is displayed on
the fluorescent indicator tube.

4. Press the [DISPLAY] button to changed over between VACS
status display mode and the amplifier IC parameter display
mode.

5. In the amplifier IC parameter display mode, press the
[GROOVE] button to changed over DBFB on/off, and when it
is on, the character “D” is displayed on the fluorescent indicator
tube.

6. In the amplifier IC parameter display mode, press the
[SURROUND] button to changed over surround on/off, and
when it is on, the character “S” is displayed on the fluorescent
indicator tube.

7. In the amplifier IC parameter display mode, turn each knob of

. >

[ -- EQ + ] causes respective parameters to be changed,
as well as change-over of the display on the fluorescent
indicator tube.

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 the I/1 button to turn the power on.

2. Press the [CD] button to select “CD”.

3. Press three buttons of x , [PLAY MODE/TUNING MODE] and
Z simultaneously.

4. When the CD service mode is activated, the message “MPEG
AV TEST” is displayed on the fluorescent indicator tube.

5. Press the M/ALBUM + button, optical pick-up move to outside
track and the message “SLED OUT” is displayed on the
fluorescent indicator tube.

6. Press the m/ALBUM – button, optical pick-up move to inside
track and the message “SLED IN” is displayed on the
fluorescent indicator tube.

7. Press the [ENTER] button, traverse on/off is changed over.

8. Press the [EQ BAND] button when MPEG AV Test mode is
activated, the massage “SERVICE MODE” is displayed on
the fluorescent indicator tube and AV Test mode is activated.

19

HCD-RV555

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 I/1 button to turn the power on.

2. Press the [CD] button to select “CD”.

3. Set disc on the CD tray and set tape into the deck.

4. Press three buttons of x , [PLAY MODE/TUNING MODE] and
[DISC SKIP/EX-CHANGE] simultaneously.

5. Aging operations of CD and tape are started at the same time.

6. To release from this mode, press the I/1 button to turn the
power off and press the function buttons.

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.

Aging mode sequence (CD section) :

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 AAG-1 or TAPE BAG-2”

Shut off

FWD play the tape A

“TAPE AAG-3”

2 minutes

Rewind the tape A

“TAPE AAG-6”

Shut off

FWD play the tape B

“TAPE BAG-3”

2 minutes

Rewind the tape B

“TAPE BAG-6”

Shut off

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.

Note: “TAPE *AG-*” is display of each step.

PANEL TEST MODE

This mode is used to check the fluorescent indicator tube, LEDs
and buttons.

Procedure:

1. Press the I/1 button to turn the power on.

2. Press three buttons of x , [PLAY MODE/TUNING MODE] and
[ENTER] simultaneously.

3. Fluorescent indicator tube and LEDs are all turned on.

4. Press two buttons of X and [ENTER] simultaneously, mode
is changed over.

5. In the key check mode, press each key, the defined key number
of every each key list is displayed on the fluorescent indicator
tube.

6. In the key count check mode, “KEYCNT 0” is displayed on
the fluorescent indicator tube. Each time a key is pressed, “K”
value increases. However, once a key is pressed, it is no longer
taken into account.

7. In the headphone input check mode, connect the headphone,
the message “H_P ON” is displayed on the fluorescent
indicator tube, and disconnect the headphone, the message
“H_P OFF” is displayed on the fluorescent indicator tube.

8. In the volume check mode, “VOLUME FLAT” is displayed
on the fluorescent indicator tube. Turn the [VOLUME] knob
clockwise, the message “VOLUME UP” is displayed on the
fluorescent indicator tube momentarily and turn the [VOLUME]
knob counterclockwise, the message “VOLUME DOWN” is
displayed on the fluorescent indicator tube momentarily.

20

HCD-RV555

MC TEST MODE

This mode is used to check operations of microprocessor.

Procedure:

1. Press the I/1 button to turn the power on.

2. Press three buttons of

x , [PLAY MODE/TUNING MODE] and

[DISC 3] simultaneously.

3. When the MC test mode is activated, VACS level is displayed
on the fluorescent indicator tube momentarily.

4. Turn the [ -- EQ + ] knob clockwise, the message “ALL

. >

EQ MAX” is displayed on the fluorescent indicator tube
momentarily and turn the [ -- EQ + ] knob counterclock-

. >

wise, the message “ALL EQ MIN” is displayed on the
fluorescent indicator tube momentarily.

5. Press the [PRESET EQ] button, the message “ALL EQ FLAT”
is displayed on the fluorescent indicator tube momentarily.

6. Turn the [VOLUME] knob clockwise, the message “VOLUME
MAX” is displayed on the fluorescent indicator tube
momentarily and turn the [VOLUME] knob counterclockwise,
the message “VOLUME MIN” is displayed on the fluorescent
indicator tube momentarily.

7. Press the [GROOVE] button to changed over VACS on/off.

8. When the [REC PAUSE/START] button is pressed twice with a
tape set in the deck-B, the function is switched “MD” or
“VIDEO” and recording starts. When the

M/ALBUM + button is pressed during recording, the tape is

m/ALBUM – or

rewound back to the beginning of recording, the function is
switched to “TAPE B”, then playback starts.

9. When the [CD SYNC] key is pressed with the test tape (AMS-
100, AMS-110A) in the deck, number of space between tunes
is counted, then if AMS-110A is set, “OK” is displayed on the
fluorescent indicator tube and if AMS-100 is set, “NG” is
displayed on the fluorescent indicator tube.

10. Press the

I/1 button to release from this mode, then cold reset

is performed.

VERSION DISPLAY MODE

This mode is used to check the model, destination and software
version.

Procedure:

1. Press the I/1 button to turn the power on.

2. Press three buttons of x , [PLAY MODE/TUNING MODE] and
[DISC 2] simultaneously.

3. When this mode is activated, model and destination is
displayed on the fluorescent indicator tube.

4. Press the [DISPLAY] button to changed over between software
version and year, month, day of the software creation display
mode and model and destination display mode.

5. To release from this mode, press three buttons of x , [PLAY
MODE/TUNING MODE] and [DISC 2] simultaneously.

CD ERROR CODE DISPLAY MODE

This mode can be used for error code display of CD section.

Procedure:

1. Press the I/1 button to turn the power on.

2. Press the [CD] key to select “CD”.

3. Press three buttons of x , [CD] and [DISC 1] simultaneously.

4. When this mode is activated, mechanism deck error code is
displayed on the fluorescent indicator tube.

5. Press the [GROOVE] button to changed over between optical
pick-up error code display mode and mechanism deck error
code mode.

6. Turn the [ -- EQ + ] knob to change over display of error
history.

. >

1. Mechanism Deck Error Code Mode

When this mode is entered, mechanism deck error code is displayed
with the 10-character format on the fluorescent indicator tube.

The first digit from the left indicates:

The first digit from the left indicates which mode the error history
is. In the mechanism deck error code mode, “M” is displayed on
the fluorescent indicator tube.

The second digit from the left indicates:

(Error history No. display)
The second digit from the left indicates which order the error history
is. “1” indicates the latest error history, and each time the number
increases by one, the error history goes back to one-previous error.

The third and 4th digit from the left indicates:
(Error status display)

The third and 4th digit from the left indicates which error status is
indicated.

Display Status

00 No error

08 Tab le operation time-out (Table does not move to the target

position within the specified time)

16 In the chucking down operation, the operation was retried

by the maximum number of times but the operation could

not be completed

17 In the chucking up and down operation, the reverse

recovery processing was attempted but it could not be

recovered

18 In the chucking up operation, the operation was retried by

the maximum number of times but the operation could not

be completed

20 Loading operation time-out (Table does not move to the

target position within the specified time)

22 As the chuck was in the ex-open status at the initialization,

the closing was attempted but could not be completed

The 5th and 6th digit from the left indicates:
(Present status display)

The 5th and 6th digit from the left indicates which operating status
when an error occurred is indicated.

Display Status

01 Open completion status

02 From open status, the movement to chucking down position

is under way

03 From chucking down position, the open operation is under

way

04 Chucking down completion status

10 The chucking down operation is under way

11 The chucking up operation is under way

12 Close completion status

13 From close status, the ex-open operation is under way

14 From ex-open status, the close operation is under way

18 Ex-pen completion status

21

HCD-RV555

The 7th and 8th digit from the left indicates:
(Motor status display)

The 7th and 8th digit from the left indicates which motor output
status when an error occurred is indicated.

Display Status

× 0 No table motor output

× 1Table motor forward output

× 2Table motor backward output

× 3Table motor break output

0 × No loading motor output

1 × Loading motor forward output

2 × Loading motor backward output

3 × Loading motor break output

The 9th and 10th digit from the left indicates:
(Tray status display)

The 9th and 10th digit from the left indicates which target processing
when an error occurred is indicated.

Display Status

01 Open operation

12 Close operation

18 Ex-open operation

2. Optical Pick-up Error Code Mode

When this mode is entered, optical pick-up error code is displayed
with the 8-character format on the fluorescent indicator tube.

The first digit from the left indicates:

The first digit from the left indicates which mode the error history
is. In the optical pick-up error code mode, “D” is displayed on the
fluorescent indicator tube.

The second digit from the left indicates:
(Error history No. display)

The second digit from the left indicates which order the error history
is. “1” indicates the latest error history, and each time the number
increases by one, the error history goes back to one-previous error.

The third and 4th digit from the left indicates:
(Error status display)

The third and 4th digit from the left indicates which error status is
indicated.

Display Status

01 Not focused (TOC read without a disc)

02 GFS NG (TOC read with a disc chucked)

03 Start operation time-over

04 Defocused continuously (Defocused during TOC reading)

05 Q code not entered for specified time

06 Tracking not turned ON

07 Blank disc (Blank disc TOC read)

The 5th and 6th digit from the left indicates:
(Error step display)

The 5th and 6th digit from the left indicates which processing when
a trouble occurred

Display Contents

01 Power OFF in progress

02 Initialize in progress

03 Oscillation stopping

04 From oscillation stop, oscillation starting

05 Stopping

06 Stop operation is under way

07 Start operation in progress

08 TOC read in progress

09 Search operation is under way

0A Playback operation is under way

0B Pause operation is under way

0C Playback manual search operation is under way

0D Pause manual search operation is under way

0E —

The 7th and 8th digit from the left indicates:

The 7th and 8th digit from the left indicates which operation in
progress when a trouble occurred. (Step of each processing of the
5th and 6th digits is indicated)

5 REPEAT LIMIT CANCEL MODE

Number of repeat for CD playback is 5 times when the repeat mode
is “REPEAT”. This mode is used to enables CD to repeat playback
for limitless times.

Procedure:

1. Press the

I/1 button to turn the power on.

2. Press the [CD] button to select “CD”.

3. Press three buttons of x , [CD] and [ENTER] simultaneously.

4. The message “LIMIT OFF” is displayed on the fluorescent
indicator tube momentarily, CD repeat 5 limit is cancelled.

VCD COLOR SYSTEM MODE

This mode is used to change over color system.

Procedure:

1. Set to the standby state.

2. Press two buttons of m/ALBUM – and I/1 simultaneously
to change the color system to PAL, and the message “COLOR
PA L” is displayed on the fluorescent indicator tube.

3. Press two buttons of X and I/1 simultaneously to change
the color system to AUTO, and the message “COLOR AUTO”
is displayed on the fluorescent indicator tube.

4. Press two buttons of M/ALBUM + and I/1 simultaneously
to change the color system to NTSC, and the message
“COLOR NTSC” is displayed on the fluorescent indicator
tube.

22

SECTION 5

)

TP2 (TE)

TP10 (VC)

BD board

+
–

oscilloscope

RF signal waveform

VOLT/DIV : 200mV
TIME/DIV : 500ns

level : 0.75

±

0.1Vp-p (RFDC)

1.05

±

0.3Vp-p (RFAC)

p

ELECTRICAL ADJUSTMENTS

HCD-RV555

CD SECTION

Note:

1. CD Block is basically designed to operate without adjustment.
Therefore, check each item in order given.

2. Use LUV-P01 (Part No. 4-999-032-01) unless otherwise indicated.

3. Use an oscilloscope with more than 10 MW 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

TP4 (FE)

TP10 (VC)

Procedure:

1. Connect an oscilloscope to TP4 (FE) and TP10 (VC) on the
BD board.

2. Press the I/1 button to turn the power on.

3. Load the disc (LUV-P01) and actuate the focus search. (In
consequence of open and close the disc tray, actuate the focus
search)

4. 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-

Note: Clear RF signal waveform means that the shape “ ◊ ” can be clearly

distinguished at the center of the waveform.

TRAVERSE LEVEL CHECK

Procedure:

1. Connect an oscilloscope to TP2 (TE) and TP10 (VC) on the
BD board.

2. Press the I/1 button to turn the power on.

3. Load the 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

B

VC

center of
waveform

A (DC voltage

Note: • Try to measure several times to make sure than the ratio

of A : B or B : A is more than 10 : 7.

• Ta ke sweep time as long as possible and light up the

brightness to obtain best waveform.

RF LEVEL CHECK

BD board

TP6 (RFDC)

TP5 (RFAC)

TP10 (VC)

Procedure:

1. Connect an oscilloscope CH1 to TP6 (RFDC), CH2 to TP5
(RFAC) and TP10 (VC) on the BD board.

2. Press the I/1 button to turn the power on.

3. Load the disc (LUV-P01) and playback the number nine track.

4. Confirm that oscilloscope waveform is clear and check if RF
signal level is correct or not.

oscilloscope

+
–

level=1.2 ±0.55Vp-p

Connecting Location:

– BD BOARD (SIDE B) –

TP6

(RFDC)

TP5 (RFAC)

symmetry

TP4 (FE)

TP2 (TE)

TP10 (VC)

23

HCD-RV555

r

r

VIDEO SECTION

AUDIO LEVEL, VIDEO CLOCK, AUDIO SERVO
CLOCK CHECK

VMP board

TP415 (L-OUT)

TP413 (R-OUT)

VMP board

TP70 (54 MHz)

TP182 (4.2336 MHz)

Procedure:

1. Connect an oscilloscope to TP308 (V-OUT) on the VMP
board.

2. Connect a level meter to TP415 (L-OUT) and TP413 (R-OUT)
on the VMP board.

3. Connect a frequency counter to TP70 (54 MHz) and TP182
(4.2336 MHz) on the VMP board.

4. Press the I/1 button to turn the power on.

5. Set a test disc (HLV-402 (Part No. 8-909-870-00))

6. Set to the MPEG AV TEST mode. (Refer to the CD SERVICE
MODE (See page 19))

7. The message “MPEG AV” is displayed on the fluorescent
indicator tube. Color bar signal outputs and sine-wave (1 kHz
0 dB) appears.

8. Confirm that the value of level meter is 2.5 ± 2.0 dBs. (If
audio output disappear, press the [PRESET EQ] button, and
the message “SERVICE MODE” is displayed on the
fluorescent indicator tube)

9. Confirm that the value of frequency counter is 54 MHz ± 400
Hz.

10. Confirm that the value of frequency counter is 4,2336 MHz.

11. Change disc to a MP3 test disc (MP3 1 kHz 0 dB sine-wave is
recorded)

12. Confirm that the value of level meter is 2.4 ± 2.0 dBs.

level mete

+
–

frequency counte

+
–

– VMP BOARD (SIDE A) –

TP70

(54 MHz)

TP182

(4.2336 MHz)

TP415

(L-OUT)

TP413

(R-OUT)

24

SECTION 6
DIAGRAMS

6-1. BLOCK DIAGRAM — CD SERVO SECTION —

FOCUS/TRACKING ERROR AMP

DETECTOR

OPTICAL PICK-UP

BLOCK

LASER DIODE

PD

M102

M

(SPINDLE)

M101

M

(SLED)

2-AXIS
DEVICE

(TRACKING)

(FOCUS)

A

B

C

D

E

F

LD

LD

PD

SP+

SP-

SD+

SD-

T+

T-

F+

F-

6

7

8

9

11

10

AUTOMATIC

POWER

CONTROL

Q101

A

B

C

D

F

E

16

15

14

13

12

11

18

17

F I-V AMP

E I-V AMP

LD

1

SP+

SP–

SD+

SD–

TD+

TD–

FD+

FD–

RF

SUMMING

AMP

FOCUS

ERROR AMP

RF DC

AMP

TRACKING

ERROR AMP

APC LD

AMP

FOCUS/TRACKING COIL DRIVE,

SPINDLE/SLED MOTOR DRIVE

IC150

MOTOR

DRIVE

MOTOR

DRIVE

COIL

DRIVE

COIL

DRIVE

SFDR

SRDR

TFDR

TRDR

FFDR

FRDR

MUTE

20

AC

SUM

FEI

RFDCO

RFDCI

TE_BAL

DVC

SW

24

26

4

5

6

7

22

23

RF AMP,

IC103

FE

TE

PD

HCD-RV555

FREQUENCY

SELECT SWITCH

Q102

FILTER

189

MDP

133

24

XTSL

GPIO9

SFDR

SRDR

137 138 140

12

DI

11

CLK

10

LD

171

168 170

FILO

DIGITAL SIGNAL PROCESSOR,

DIGITAL SERVO PROCESSOR

TFDR

TRDR

FFDR

141

142

DATA

CLK

LD

PCO

IC505 (1/2)

FRDR

143

169

CLTV

81

FILI

SYSRST

IC701

IC712

INV.

Q731

ROTARY

ENCODER

RE701

TO IC505 (2/2)

AUDIO/VIDEO

SECTION

LM-F

7FIN

LM-R

9RIN

TM-F

7FIN

TM-R

9RIN

TABLE

E-3
E-2
E-1

O/C

91

PCMD

93

BCK

88

LRCK

124

C2PO

102

DATA

111

CLOK

109

XLAT

113

SENS

126

SCOR

96

SQSO

98

L SQCK

114

L SCLK

121

GFS

131

L FOK

105

L CDXRST

SSTP

135

When the optical

ON :

S101

(LIMIT)

pick-up is inner
position

M751

(LOADING)

M741

(TABLE)

L CDDATA

90
92

L CDBCK

87

L CDLRCK

123

L CDC2PO

103

L DDAT

110

L DCLK

108

L XLAT

112

L SENS

125

L SCOR

95

L SQSO

99

SQCK

115

SCLK

120

L GFS

132

FOK

106

XRST

M

M

TABLE

SENSOR

IC731

DISC TRAY

ADDRESS DETECT

S751

(OPEN)

LOADING MOTOR DRIVE

4 OUT1

2 OUT2

TABLE MOTOR DRIVE

4 OUT1

2 OUT2

OPEN

CLOSE

26

EQ
IN

4

16

17

28

29

18

19

14

12

2

27

3

RFAC

LD ON (D/A4)

2

VCA

D/A1

D/A3

FEBAL

D/A2

RFC

RFAC

EQ

D/A1
D/A2
D/A3
LD ON (D/A4)

FEBAL

15

173

RFAC

164

FE

160

RFDC

162

TE

163

SE

161

CE

165

VC

D/A

CONVERTER

IC506

3

AO3

5

AO4
AO5

6
9

AO6

2

AO2

RST

4

• SIGNAL PATH

: CD PLAY

LM-F
LM-R
TM-F

TM-R

TABLE
TRAY

O/C

DATA
CLK

LD

SYS RST

MAIN

A

SECTION

(Page 27)

AUDIO/VIDEO

B

(Page 26)

AUDIO/VIDEO

C

(Page 26)

AUDIO/VIDEO

D

(Page 26)

CD

SECTION

CD

SECTION

CD

SECTION

HCD-RV555

25 25

HCD-RV555

6-2. BLOCK DIAGRAM — AUDIO/VIDEO CD SECTION —

NVOEL

74

24

OE

D0 – D7

13 – 15, 17 – 21

DQ0 – DQ7

XTAO

150 149

X501

33.8688MHz

12 – 5, 27, 26, 31

A0 – A9, A18

PROGRAM ROM

IC508

XTAI

A0 – A10

CLKB

207 206

X502

27MHz

CLKA

D11, D12, D15

28, 29, 30

A13, A14, A17

ADDRESS BUS

DATA BUS

MPEG VIDEO/AUDIO DECODER,

VIDEO SIGNAL ENCODER

DRDAT0 – DRDAT15

D0 – D15

2, 4, 5, 7, 8, 10, 11, 13, 42,

44, 45, 47, 48, 50, 51, 53

DQ0 – DQ15

IC505 (2/2)

DRADR0 – DRADR10

34 – 37, 39 – 4549 – 56, 59 – 66

D0 – D15

A0 – A10

23 – 26, 29 – 34, 22

A0 – A10

A0 – A10

D-RAM

IC507

FROM IC505 (1/2)

DRCAS

DRRAS

DRCK

DRWEL

73 72 68

70 76 77 78

18

16 17 20

38 15

WE

CLK

CAS

RAS

CD SERVO

SECTION

DRDQM0

DRBS

39

BA0

LDQM

DRDQM1

UDQM

GPIO1

GPIO0

13 14

99

98

I-SYS-IN

O-SYS-OUT

GPIO5

GPIO2

15 19 18 16

96

95

100

0-CD-DATA

O-MP3-CLK

O-VIDEO-MUTE

AUDDTO0

AUDBCK

AUDLRCK

AUDXCLKO

GPIO3

GPIO4

97

I-SENS

O-CD-CLK

GPIO14
GPIO13
GPIO11
GPIO12

CPSIG

+3.3V

REGULATOR

Q581

5

VDD

201
203
204

205

30
29
26
28

6

DATA

2
1

BCK

3

LRCK

16

MLCK

DATA

13
14

CLK

15

LAT

DIGITAL FILTER,
D/A CONVERTER

IC504

6

VOUTL

VOUTR

VCC

CD +5V

7

8

LOW-PASS

FILER
IC102

R-CH

MUTING

Q306

MUTE
CONTROL
Q304, 305

R-CH

CD L

CD MUTING

MAIN

E

SECTION

(Page 27)

MAIN

F

SECTION

(Page 27)

LD

CLK

DATA

DATA

CLK
LD

VIDEO AMP

IC307

B.P.F.

7

SYNC BUFFER

Q301

3

CONTROL SWITCH

OUT

IN

OUTSAG

STBY

2

VIDEO MUTING

Q370

6
5

VIDEO SELECTOR

IC803

1

3

2

7

J805 (1/2)

VIDEO SW

J803

VIDEO

OUT

VIDEO

CD SERVO

C

SECTION

(Page 25)

GAME
INPUT

PANEL/POWER

G

(Page 28)

SECTION

HCD-RV555

• R-ch is omitted due to same as L-ch.

• SIGNAL PATH

: CD PLAY (AUDIO)

: CD PLAY (VIDEO)

: MIC

CD SERVO

SECTION

(Page 25)

CD SERVO

SECTION

(Page 25)

SYSTEM CONTROLLER

IC601 (1/3)

JK802

MIC

MIC +10V

MIC AMP

IC801 (1/2)

VR801

MIC LEVEL

MIC AMP

IC801 (2/2)

MIC

H

MAIN

SECTION

(Page 27)

TABLE

B

TRAY

O/C

SYS RST

D

TABLE
TRAY
O/C

73 I-CD NUM SENSOR
20 I-CD ENCODER
21 I-CD OPEN/CLOSE

93 O-XRES (RESET)

WFR/HP/MIC-IN

MUTING

Q802

MIC DETECT

Q372

19

+

MIC AGC

Q801

ECHO AMP

IC802

VR802

ECHO LEVEL

HP CTL

MAIN

I

SECTION

(Page 27)

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