Sony HCD-VP800AV User manual

HCD-VP800AV
E Model
Tourist Model
SERVICE MANUAL
MINI HI-FI COMPONENT SYSTEM
— Continued on next page —
SPECIFICATIONS
•HCD-VP800AV is the tuner, deck,
CD and amplifier section in MHC-
VP800AV.
Ver 1.4 2003.12
9-873-195-05
2003L02-1
© 2003.12
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
Model Name Using Similar Mechanism HCD-VP700
CD CD Mechanism Type CDM58E-30BD61A
Section Base Unit Name BU-30BD61A
Optical Pick-up Name A-MAX.3
Tape deck Model Name Using Similar Mechanism HCD-VP700
Section Tape Transport Mechanism Type TCM-230MWR41/AWR41
Amplifier section
The following measured at AC 120, 220, 240 V,
50/60 Hz
DIN power output (rated) 90 + 90 watts
(8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
Front speaker: 120 + 120 watts
Center speaker: 40 watts
Rear speakers: 40 + 40 watts
(8 ohms at 1 kHz, 10%
THD)
Inputs
GAME IN: voltage 250 mV,
(phono jacks) impedance 47 kilohms
MD/VIDEO IN: voltage 450 mV/250 mV,
(phono jacks) impedance 47 kilohms
OPTICAL IN:
(Square optical connector jacks, front and rear panels)
wavelength ——
MIC 1/2: sensitivity 1 mV,
(phone jack) impedance 10 kilohms
Outputs
MD (VIDEO) OUT: voltage 250 mV
(phono jacks) impedance 1 kilohms
VIDEO OUT: max. output level
(phono jack) 1 Vp-p, unbalanced,Sync
negative, load impedance
75 ohms
S-VIDEO OUT: Y: 1 Vp-p, unbalanced,
(4-pin/mini-DIN jack) Sync negative,
C: 0.286Vp-p,
load impedance 75 ohms
PHONES: accepts headphones of
(stereo mini jack) 8 ohms or more
FRONT SPEAKER: accepts impedance of 8 to
16 ohms
REAR SPEAKER: accepts impedance of 8 to
16 ohms
CENTER SPEAKER: accepts impedance of 8 to
16 ohms
SUB WOOFER: Voltage 1 V,
impedance 1 kilohms

2
HCD-VP800AV
This appliance is classified as a CLASS 1 LASER product. The
CLASS 1 LASER PRODUCT MARKING is located on the rear
exterior.
Laser component in this product is capable
of emitting radiation exceeding the limit for
Class 1.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
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.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
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.
VIDEO CD/CD player section
System Compact disc and digital
audio system
Laser Semiconductor laser
(λ=660 nm)
Frequency response 2 Hz –20 kHz (±0.5 dB)
Signal-to-noise ratio More than 90 dB
Dynamic range More than 90 dB
Video color system format
NTSC, PAL
DIGITAL OUT OPTICAL
(Square optical connector jack, rear panel)
wavelength 660 nm
Tape player section
Recording system 4-track 2-channel stereo
Frequency response 40 –13,000 Hz (±3 dB),
(DOLBY NR OFF) using Sony TYPE I
cassette,
40 –14,000 Hz (±3 dB),
using Sony TYPE II
cassette
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
Tourist model: 76.0 –108.0 MHz
Other models: 87.5 –108.0 MHz
Antenna FM lead antenna
Antenna terminals 75 ohm unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
Other models: 531 –1,602 kHz
(with the interval set at
9 kHz)
530 –1,710 kHz
(with the interval set at
10 kHz)
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz
General
Power requirements
Thailand model: 220 V AC, 50/60 Hz
Other models: 120 V, 220 V or
230 –240 V AC,
50/60 Hz
Adjustable with voltage
selector
Power consumption: 225 watts
Dimensions (w/h/d)
Approx. 280 x 360 x 365 mm
Mass Approx. 12.0 kg
Supplied accessories: AM loop antenna (1)
FM lead antenna (1)
Remote commander (1)
Batteries (2)
Video cable (1)
Front speaker pads (8)
Center and rear speaker
pads (
12)
Design and specifications are subject to change
without notice.

3
HCD-VP800AV
TABLE OF CONTENTS
1. GENERAL ·········································································· 4
2. DISASSEMBY··································································· 6
3. TEST MODE ···································································· 13
4. MECHANICAL ADJUSTMENTS ····························· 16
5. ELECTRICAL ADJUSTMENTS ······························· 16
6. DIAGRAMS
6-1. Circuit Board Location ················································ 23
6-2. Block Diagrams ··························································· 24
6-3. Printed Wiring Board –Driver Section – ···················· 27
6-4. Schematic Diagram –Driver Section – ······················ 27
6-5. Schematic Diagram –BD Section – ···························· 28
6-6. Printed Wiring Board –BD Section – ························· 29
6-7. Printed Wiring Board –Main Section – ······················ 30
6-8. Schematic Diagram –Main Section (1/3) – ················ 31
6-9. Schematic Diagram –Main Section (2/3) – ················ 32
6-10. Schematic Diagram –Main Section (3/3) – ················ 33
6-11. Printed Wiring Board –DSP Section – ······················· 34
6-12. Schematic Diagram –DSP Section (1/2) – ················· 35
6-13. Schematic Diagram –DSP Section (2/2) – ················· 36
6-14. Printed Wiring Board –OPT Section – ······················· 37
6-15. Schematic Diagram –OPT Section – ························· 37
6-16. Printed Wiring Board –Front Amp Section – ············· 38
6-17. Schematic Diagram –Front Amp Section – ··············· 39
6-18. Printed Wiring Board –Surround Amp Section – ······ 40
6-19. Schematic Diagram –Surround Amp Section – ········· 41
6-20. Printed Wiring Board –Panel Section – ····················· 42
6-21. Schematic Diagram –Panel Section (1/2) – ··············· 43
6-22. Schematic Diagram –Panel Section (2/2) – ··············· 44
6-23. Printed Wiring Board –Leaf SW Section – ················ 45
6-24. Schematic Diagram –Leaf SW Section – ··················· 45
6-25. Printed Wiring Board –Video Section – ····················· 46
6-26. Schematic Diagram –Video Section (1/3) – ··············· 47
6-27. Schematic Diagram –Video Section (2/3) – ··············· 48
6-28. Schematic Diagram –Video Section (3/3) – ··············· 49
6-29. Printed Wiring Board –Trans Section – ····················· 50
6-30. Schematic Diagram –Trans Section – ························ 51
6-31. IC Pin Function Description ······································· 52
6-32. IC Block Diagrams ····················································· 60
7. EXPLODED VIEWS
7-1. Main Section ································································· 64
7-2. Front Panel Section ······················································· 65
7-3. Chassis Section ····························································· 66
7-4. Tape Mechanism Deck Section-1 (TCM-230MWR41) 67
7-5. Tape Mechanism Deck Section-2 (TCM-230AWR41) 68
7-6. CD Mechanism Deck Section (CDM58E-30BD61A) ·· 69
7-7. Base Unit Section (BU-30BD61A) ······························ 70
8. ELECTRICAL PARTS LIST ······································· 71

4
HCD-VP800AV
This section is extracted from
instruction manual.
SECTION 1
GENERAL
12345
6
8
q;
qs
qd
qf
qg
qh
qj
ql
w;
wa
ws
wf
wh
wj wk
wl
wg
wd
7
9
qa
qk
e;
eaesedefegeh
rk
rl
rj
rh
rgrfrdrs
ra
ej
el
ek
r;
2CH/MULTI rs (27)
CD e; (9, 12–15, 22, 23)
CD SYNC HI-DUB qj (22, 23)
CLOCK/TIMER SET ed (11, 23,
29)
DECK A Zw; (21)
DECK B Zqk (21)
digipad el (6, 10, 11, 13, 15,
19–21, 24, 26, 30)
DIGITAL wh (31)
DIGITAL IN 2 (OPTICAL) jack
wf (31)
DIRECTION eg (21–23, 28)
DISC 1–3 2(12–15, 23)
DISC SKIP EX-CHANGE 3
(12–14)
Disc tray 5(12)
DISPLAY ea (11, 16)
DOLBY NR eh (21–23)
DSP EDIT rj (25)
ECHO LEVEL control wd (28)
EDIT eg (23)
EFFECT rd (25, 26)
ENTER r; (11, 14, 15, 19, 20,
23, 24, 26, 29, 30)
FM MODE eh (20)
GAME wg (31)
GAME MODE rh (25)
GROOVE rf (25)
IR receptor qf
KARAOKE PON es (27, 28)
MD (VIDEO) wj (31)
MIC 1/2 jack ws (27, 28)
MIC LEVEL control wa (27, 28)
MOVIE MODE ek (25)
MULTI CHANNEL DECODING
indicator rl (29)
MUSIC MODE rk (25)
P FILE rg (26)
PICTURE EFFECT ql (19)
PHONES jack qg
PLAY MODE ej (12, 14, 15, 23)
REC/PAUSE START qh (22, 23,
28)
REPEAT eh (13, 15)
TAPE A/B wk (21, 22)
TIMER SELECT ef (24, 30)
TOOL MODE ra (25)
TUNER/BAND wl (20)
TUNER MEMORY ej (20)
VOLUME control qd
BUTTON DESCRIPTIONS
@/1 (power) 1
ZOPEN/CLOSE (disc tray) 4
nN (play) 6
X(pause) 7
x(stop) 8
.(go back) q;
>(go forward) 9
m/– (rewind) qs
M/+ (fast forward) qa
Parts Identification
Main unit
The items are arranged in alphabetical order.

5
HCD-VP800AV
Setting the time
1Turn on the system.
2Press CLOCK/TIMER SET.
When you set the time for the first time,
proceed to step 5.
3Press .or >repeatedly to select
“CLOCK SET”.
4Press ENTER.
5Press .or >repeatedly to set the
hour.
6Press ENTER.
7Press .or >repeatedly to set the
minutes.
8Press ENTER.
Tips
•If you have made a mistake or want to change the
time, start over from step 2.
•You can use the digipad instead of ./>.
Note
The clock settings are canceled when you disconnect
the power cord or if a power failure occurs.

6
HCD-VP800AV
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. CASE (TOP)
Set Case (Top) Loading Panel Front Panel Section
Tape Mechanism Deck
(TCM-230AWR41/MWR41)
CD Panel board, Panel board, OPT IN Board
LEAF SW board, Head (A) board,
Head (B) board
DSP board, SUB Trans board, Back panel, Fan, OPT IN rear board
Chassis section
Front AMP board, Surround AMP board
Base unit, BD board
(BU-30BD61A)
CD mechanism deck
(CDM58)
Tnans board, Main board
Escutcheon pad
(With touch pad)
Driver board, Motor board, CD sensor board, Video board
• The equipment can be removed using the following procedure.
1 two screws (case 3 TP2)
2 screw (case 3 TP2)
3 two screws (case 3 TP2)
4 screw (case 3 TP2)
8 case
7 two screws
(+BVTT 3
× 8
)
6 three screws (+BVTT 3 × 8)
5 two screws (+BVTT 3 × 8)
•Abbreviation
SP : Singapre model
MY : Malaysia model
TH : Thai model

7
HCD-VP800AV
2-2. LOADING PANEL
2-3. FRONT PANEL SECTION, CHASSIS SECTION, CD MECHANISM DECK (CDM58)
2 pull-out the disc tray.
4 pull-out the disc tray.
loading panel
1 turn the pulley to the direction of arrow.
pulley
front panel side
CD mechanism deck (CDM58)
3
0 two screws (+BVTP 3 × 10 )
qa two screws
(+BVTP 3
× 10 )
3 screw (+BVTP 3 × 10)
2 screw
(+BVTP 3
× 10)
1 connector (CN601)
qs connector (CN701)
8 connector (CN2)
7 connector (CN1)
6 flat type wire (CN1001)
9 flat type wire (CN201)
chassis section
4 three screws (+BVTT 3 × 8)
5 front panel section
qd CD mechanism deck (CDM58)

8
HCD-VP800AV
2-4. TAPE MECHANISM DECK (TCM-230AWR41/MWR41)
2-5. CD PANEL BOARD, PANEL BOARD, OPT IN BOARD
1 five screws
(+BVTP 2.6 × 8)
8 four screws
(+BVTP 2.6 × 8
)
9 five screws
(+BVTP 2.6 × 8)
0 three screws
(+BVTP 2.6
× 8)
qd PANEL board
qa five screws
(+BVTP 2.6 × 8)
4 two screws
(+BVTP 2.6
× 8)
qs four screws
(+BVTP 2.6 × 8)
two claws
two claws
qg two screws
(+BVTP 2.6
× 8)
two claws
two claws
2 CD panel board
qh OPT IN board
3 knob (vol)
5 ring (vol)
7 nut
6 cover(vol)
qf flat type wire (CN108)
2 tape mechanism deck
(TCM-230AWR41/MWR41)
1 four screws (+BVTP 2.6 × 8
)

9
HCD-VP800AV
2-6. ESCUTCHEON PAD (WITH TOUCH PAD)
2-7. DSP BOARD, SUB TRANS BOARD, BACK PANEL, FAN, OPT IN REAR BOARD
1 button (edit)
5 two screws
(TPG +P 2
× 8)
6 two screws
(TPG +P 2
× 8)
3 two screws
(+BVTP 2.6
× 8)
2 two screws
(+BVTP 2.6
× 8)
8 three screws
(+BVTP 2.6
× 8)
9 button (DSP
)
7 holder (pad)
4 escutcheon (pad)
touch pad
qd connector (CN901)
2 two screws
(+BVTP 3
× 8)
8 two screws
(+BVTP 3
× 8)
9 two screws
(+BVTP 3
× 8)
0 bracket (DSP)
qa DSP
board
1 two screws
(+BVTP 3
× 8)
qs two screws
(+BVTP 3
× 8)
qh SUB trans board
ws back panel
6 connector
(CN801)
OPT IN
rear board
wf two screws
(+BVTP 3
× 10 )
wd connector (CN104)
wg fan
3 four screws
(+BVTP 3
× 8)
wh screw
(+BVTP 3
× 8)
qg connector
(CN903)
qj two screws
(+BVTP 3
× 8)
w; rew (+BVTP 3 × 8)
qk two screws
(+BVTP 3
× 8)
ql two screws
(+BVTP 3
× 8)
wa screw
(+BVTP 3
× 8)
qf connector (CN902)
7 connector
(CN601)
4 flat type wire (CN603)
5 flat type wire (CN602)

10
HCD-VP800AV
2-8. TRANS BOARD, MAIN BOARD
2-9. FRONT AMP BOARD, SURROUND AMP BOARD
0 t wo screws
(+BVTP 3 × 8)
1 connector
(CN914)
2 connector
(CN915)
3 connector
(CN913)
qs t wo screws
(+BVTP 3 × 8)
qd MAIN board
4 two screws
(+BVTT 4 × 8)
6 TRANS board
5 two screws
(+BVTT 4 × 8)
7 two screws
(+BVTT 3 × 8)
8 two screws
(+BVTP 3 × 8)
9 cover (heat sink)
qa SURROUND and
FRONT AMP
board ASSY
1 screw
(+BVTT 3 × 8)
2 bracket
3 connector (CN803
)
6 FRONT AMP board
0 SURROUND AMP board
4 t wo screws
(+BVTT 3 × 8)
8 t hree screws
(+BVTT 3 × 8)
7 screw
(+BVTT 3 × 8)
5 t wo screws
(+BVTP 3 × 16)
9 t wo screws
(+BVTP 3 × 16)
heat sink assy

11
HCD-VP800AV
2-11. DRIVER BOARD, MOTOR BOARD, CD SENSOR BOARD, VIDEO BOARD
2-10. LEAF SW BOARD, HEAD (A) BOARD, HEAD (B) BOARD (TCM-230AWR41/MWR41)
4 screw (+PTT 2 × 4),
ground point
4 screw (+PTT 2 × 4),
ground point
2 LEAF SW board
1 five claws
5 HEAD (A) board
6 HEAD (B) board
3 remove the four solderings.
Note: This illustration is for TCM-230MWR, but in case of TCM-230AWR, you can remove them in the same way.
9 Pull-out the Table.
4 Two screws (+BVTP 2.6 × 8)
q; Screw (+PTPWH 2.6 × 8)
qa Tray
1 Screw (+BVTP 2.6 × 8)
qs Screw (+BVTP 2.6 × 8)
6 Flat type wire (CN721)
3 Flat type wire
(CN702)
8 MOTOR board
qd CD SENSOR board
qf Flat type wire (CN502)
qg Flat type wire (CN501)
qh Two Screws
(+BVTP 2.6 × 8)
qj VIDEO board
2 DRIVER board
5 Remove the two solderings of motor.
7 Connector (CN722)

12
HCD-VP800AV
2-12. BASE UNIT, BD BOARD
4 Turn the pulley to the direction of arrow.
pulley Base unit
qg
qd Two screws (+PTPWH M2.6
)
5 Screw (+PTPWH M2.6)
1 Pulley(B)(BU-30), chucking
2 Two Screws (+PTPWH M2.6)
3 Lever (lifter)
qf Screw (DIA. 12)
qa Two screws (+BVTP 2.6 × 8)
q; BD board
qh Two insulators
6 Holder assy
qh Two insulators
qs Two stoppers
7 Flat type wire (CN101)
8 Flat type wire (CN102)
9 Remove the solder
(four portions).
Spring (insulator), coil
Spring (insulator),
coil
Spring
(insulator),
coil

13
HCD-VP800AV
SECTION 3
TEST MODE
[Cold Reset]
• The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning
the set to the customer.
Procedure:
1. Press three buttons x, DISPLAY , and DISC 1
simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously,
and the set is reset.
[Tuner Step Change] (Except for European and Middle Eastern
models)
• A step of AM channels can be changed over between 9 kHz and
10 kHz.
Procedure:
1. Press `/1 button to turn the set ON.
2. Select the function “TUNER”, and press TUNER/BAND button
to select the BAND “AM”.
3. Press `/1 button to turn the set OFF.
4. Press ENTER and `/1 buttons simultaneously, and the
display of fluorescent indicator tube changes to “AM 9 k ST”
or “AM 10 k ST”, and thus the channel step is changed over.
[GC Test Mode]
• This mode is used to check the software version, FL tube, LED,
keyboard and VACS.
Procedure:
1. Press three buttons x, DISPLAY , and DISC 2
simultaneously.
2. LEDs and fluorescent indicator tube are all turned on.
3. When you want to enter the software version display mode,
press DISC 1 .The model number and destination are displayed.
4. Each time DISC 1 is pressed, the display changes stating from
MC version, GC version, CD version, CDD, CDM version BD,
ST version, TA version, TM version, TC version, in this order,
and returns to the model number and destination display.
5. When DISC 3 is pressed while the version numbers are being
displayed except model number and destination, year, month
and day of the software creation appear. When DISC 3 is pressed
again, the display returns to the software version display. When
DISC 1 is pressed while year, month and day of the software
creation are being displayed, the year, month and day of creation
of the software versions are displayed in the same order of
version display.
6. Press DISC 2 button, and the key check mode is activated.
7. In the key check mode, the fluorescent indicator tube displays
“KOJOVO”. Each time a button is pressed, “KEY” value
increases.
However, once a button is pressed, _it is no longer taken into
account.
“VOL” value increases like 1, 2, 3...if rotating VOLUME knob
in “+” direction, or it decreases like 0, 9, 8...if rotating in
“_”direction.
8. Also when DISC 3 is pressed after lighting of all LEDs and FL
tubes, value of VACS appears.
9. To exit from this mode, press three buttons in the same manner
as step 1, or disconnect the power cord.
[MC Test Mode]
• This mode is used to check operations of the respective sections
of Amplifier, Tuner, and Tape.
Procedure:
• To enter MC Test Mode
1. Press the `/1 button to turn on the set.
2. Press the three buttons of x , DISPLAY and DISC 3
simultaneously.
3. Cursor segment flash on the FL display tube. The input
FUNCTION is changed to GAME.
* Check of Amplifier
Initial settings: Input ,GAME
EQ ,FLAT
Mode ,MUSIC
VA C S ,OFF
Output channel switching:
MUSIC key: L ,LR,R through
MOVIE key: L ,SL R ,SR through
GAME key:L ,L, SL, C R ,R, SR, SW through
TOOL MODE key: L ,CR,SW through
1. When the VOLUME control knob is turned clockwise even
slightly, the sound volume increases to is maximum and a
message “VOLUME MAX” appears for two seconds, then the
display returns to the original display.
2. When the VOLUME control knob is tuned counter-clockwise
even slightly, the sound volume decreases to its minimum and a
message “VOLUME MIN” appears for two seconds, then the
display returns to the original display.
* Tuner function
1. In the test mode, the default-preset channel is called even when
the TUNER is selected and an attempt is made to call the preset
channel that has been stored in memory. (It means that the
memory is cleared.)
2. The minimum, center and maximum frequency of each band is
set then.
* Tape recording test
1. To enter the MC Test Mode.
2. Load tapes in both tape decks A and B.
3. Press the REC button to start recording.
4. Pressing the M, mbuttons during recording returns the
tape to the recording start position and stops it at this position.
5. Pressing the “High Speed Dubbing” key while playing back the
tape of deck B switches the playback speed between “Normal
Speed” and “High Speed”.
Note:
When the playback direction of the tape is set to other than “ONY
WAY”, the restriction on the number of times playback which can
be repeated will be cleared.
* AMS Test Mode
1. Set TAPE function
2. Select the desired loop by pressing the PLAY MODE button.
Insert a test tape AMS-110A or AMS-120 to Deck A.
3. Press the SPECTRUM or KARAOKE PON button to enter
the AMS test mode.
4. After a tape is rewound first, the FF AMS is checked, and the
mechanism is shut off after detecting the AMS signal the AMS
signal twice.
5. Then the REW AMS is checked and the mechanism is shut off
after detecting the AMS signal twice.
6. When the check is complete, a message of either OK or NG
appears.
* To return to normal mode again.
1. When you want to exit this mode, press the `/1 button.
2. The cold reset is enforced at the same time.

14
HCD-VP800AV
[CD Ship Mode (No Memory Clear)]
• This mode moves the position to the position durable to vibra-
tion Use this mode when returning the set to the customer after
repair.
Procedure:
1. Press `/1 button to turn the set ON.
2. Press three ENTER , DISK 1 button and CD button
simultaneously.
3. After the “STANBY” display blinks six times, a message
“LOCK” is displayed on the fluorescent indicator rube, and the
CD ship mode is set.
[CD Ship Mode (Memory Clear)]
• This mode moves the pickup to the position durable to vibra-
tion. Use this mode when returning the set to the customer after
repair.
Procedure:
1. Press `/1 button to turn the set ON.
2. Press three buttons CD and `/1 button simultaneously.
3. After the “STANDBY” display blinks six times, a message
“LOCK” is displayed on the fluorescent indicator tube, and the
CD ship mode is set.
[CD Service Mode]
• This mode can run the CD sled motor freely. Use this mode, for
instance, when cleaning the pickup.
Procedure:
1. Press `/1 button to turn the set ON.
2. Select the function “CD”.
3. Press three buttons ENTER , DISC 1 , and xsimultaneously.
4. The CD service mode is selected.
5. With the CD in stop status, press Mbutton to move the
pickup to outside track, or press mbutton to inside track.
6. To exit from this mode, perform as follows:
1) Move the pickup to the most inside track.
2) Press `/1 button to turn the set OFF.
Note:
• Always move the pickup to most inside track when exiting from
this mode. Otherwise, a disc will not be unloaded.
• Do not run the sled motor excessively, otherwise the gear can
be chipped.

15
HCD-VP800AV
[VCD COLOR SYSTEM MODE]
• This mode is used for changing the COLOR SYSTEM of the
VCD.
Procedure:
1. Set the standby mode.
2-1.Press the two buttons `/1 and > simultaneously to set the
COLOR SYSTEM of the VCD to AUTO.
2-2.Press the two buttons `/1 and . simultaneously to fix the
COLOR SYSTEM of the VCD to PAL.
2-3.Press the two buttons `/1 and X simultaneously to fix the
COLOR SYSTEM of the VCD to NTSC.
3. The power tune ON automatically and the function sets to“CD’’.
4. The FL tube shows the COLOR SYSTEM mode see .
5. The COLOR SYSTEM mode set is maintained (memorized)
until COLD RESET is executed.
[VIDEO CD Color-bars Mode]
On this mode, the data of the color-bars signal as a picture signal
and the 1 kHz sine wave signal as a sound signal are output by the
mechanism controller (IC502) for the video CD signal check. When
measurement of the voltage and waveform on the VIDEO board,
perform it in this mode.
For reference, the color-bars signal can be observed at J302 using
an oscilloscope.
Procedure:
1. Short the both ends of the land of SL503 of the VIDEO board.
2. Turn the power on. Press the CD button to select CD.
3. The color-bars appears when the CD is in stop status, and it
disappears when the CD goes in play status.
4. After measuring, remove the lead wire connected.VIDEO board
(SIDE B)
[CD Servo ON/OFF Mode]
Procedure:
1. Short SL502 on the VIDEO board by soldering.
2. Turn on the main power. Set a disc on the DISC1 tray. Select
CD.
3. Press the hH button to play back CD.
4. When the >button is pressed, 100 track jump is executed.
5. Also, every pressing of the PLAY MODE button triggers
between ON and OFF of TRACKING SERVO and SLED
SERVO.
How to quit the CD servo ON/OFF mode:
1. Press the ?/1 button to turn off the main power.
2. Remove soldering from SL502.
[REPEAT 5 LIMIT OFF MODE]
• This mode is used to enable infinite repetitions.
Normally, the number of repetitions allowed is 5.
Procedure:
1. Press the `/1 button to turn ON the power supply.
2. Set the function “CD”.
3. Press the three burtons ENTER , DISC 3 , and xis
simultaneously.
4. Infinite repetitions is enabled.
5. This state is maintained ( memorized ) until COLD RESET is
executed.
J301
CN501
J302
1 2 3
CN503
SL503
SL502
SL501
CHECK LED
CN502
[VIDEO BOARD] (SIDE A)

16
HCD-VP800AV
SECTION 4
MECHANICAL ADJUSTMENTS
SECTION 5
ELECTRICAL ADJUSTMENTS
0 dB=0.775 V
DECK SECTION
1. Demagnetize the record/playback head with a head
demagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to the
parts adjust.
4. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
5. The adjustments should be performed in the order given in this
service manual. (As a general rule, playback circuit adjustment
should be completed before performing recording circuit
adjustment.)
6. The adjustments should be performed for both L-CH and R-
CH.
7. Switches and controls should be set as follows unless otherwise
specified.
• Test Tape
Record/Playback Head Azimuth Adjustment
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 Level Adjustment
DECK A DECK B
Note: Perform this adjustments for both decks
Procedure:
1. Mode: Playback
Precaution
1. Clean the following parts with a denatured alcohol-moistened
swab:
record/playback heads pinch rollers
erase head rubber belts
capstan idlers
2. Demagnetize the record/playback head with a head
demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
Torque Measurement
set
main board
CN301
Pin 3(L-CH)
Pin 1(R-CH)
main board
CN301
Pin 2(GND)
+
–
level mete
r
test tape
P-4-A100
(10 kHz, –10 dB)
3.06 N •m to 6.96 N •m
31 to 71 g •cm
(0.43 –0.98 oz •inch)
0.19 N •m to 0.58 N •m
2 to 6 g •cm
(0.02 –0.08 oz •inch)
3.06 N •m to 6.96 N •m
31 to 71 g •cm
(0.43 –0.98 oz •inch)
0.19 N •m to 0.58 N •m
2 to 6 g •cm
(0.02 –0.08 oz •inch)
6.96 N •m to 14.02 N •m
71 to 143 g •cm
(0.98 –1.99 oz •inch)
9.80 N •m
100 g or more
(3.53 oz or more)
9.80 N •m
100 g or more
(3.53 oz or more)
Mode Torque meter
CQ-102C
CQ-102C
CQ-102RC
CQ-102RC
CQ-201B
CQ-403A
CQ-403R
Meter reading
FWD
FWD
back tension
REV
REV
back tension
FF/REW
FWD tension
REV tension

17
HCD-VP800AV
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. After the adjustments, apply suitable locking compound to the
pats adjusted.
Adjustment Location: Playback Head (Deck A).
Record/Playback/Erase Head (Deck B).
Tape Speed Adjustment DECK B
Note: Start the Tape Speed adjustment as below after setting to the test
mode.
In the test mode, the tape speed is high during pressing the
CD SYNC HI-DUB button.
Procedure:
1. Turn the power switch on.
2. Press the xbutton, DISPLAY button and DISC 3 button
simultaneously.
(Cursor segment flash on the FL display tube.)
To exit from the test mode, press the ?/1button.
Mode: Playback
1. Insert the WS-48B into the deck B.
2. Press the Ybutton on the deck B.
3. Press the CD SYNC HI-DUB button in playback mode.
Then at HIGH speed mode.
4. Adjust RV1001 on the LEAF SW board do that frequency
counter reads 6,000 ±30 Hz.
5. Press the CD SYNC HI-DUB button.
Then back to NORMAL speed mode.
6. Adjust RV1002 on the LEAF SW board so that frequency
counter reads 3,000 ±15 Hz.
Adjustment Location: LEAF SW board
Playback level Adjustment DECK A DECK B
Procedure:
Mode: Playback
Deck A is RV302 (L-CH), Deck B is RV303 (L-CH) so that
adjustment within adjustment level as follows.
Adjustment Level:
CN301 PB level: 334 to 375 mV (–6.8 dB ±0.5 dB) level
difference between the channels: within ±0.5 dB
Adjustment Location: MAIN board
Sample Volue of Wow and Flutter: 0.3% or less W. RMS
(WS-48B)
Screw
position
L-CH
peak
within
1dB
Output
level
L-CH
peak
R-CH
peak
within
1dB
Screw
position
R-CH
peak
MAIN
board
CN301
set
test tape
P-4-A100
(10 kHz, –10 dB)
pin 1
oscilloscop
e
L-CH
R-CH
VH
waveform of oscilloscope
in phase 45°90°135°180°
good wrong
pin 2
pin 3
L
R
+
–
set
test tape
WS-48B
(3 kHz, 0 dB)
main board
CN301 (Pin 3: L-CH)
(Pin 1: R-CH)
frequency counter
+
–
set
test tape
P-4-L300
(315 Hz, 0 dB)
main board
CN301 (Pin 3: L-CH)
(Pin 1: R-CH)
level meter
forward
reverse

18
HCD-VP800AV
4. Mode: Record
5. Mode: Playback
6. Confirm playback the signal recorded in step 3 become
adjustable level as follows.
If these levels do not adjustable level, adjustment the RV301
(L-CH) and RV351 (R-CH) on the MAIN board to repeat steps
4 and 5.
Adjustable level:
CN301 PB level: 33.4 to 37.5 mV (–27.3 to –26.3 dB)
Adjustment Location: MAIN board
[MAIN BOARD] (Component Side)
[LEAF SW BOARD] (Component Side)
REC Bias Adjustment DECK B
Procedure:
INTRODUCTION
When set to the test mode performed in Tape Speed Adjustment,
when the tape is rewound after recording, the “REC memory mode”
which rewinds only the recorded portion and playback is set.
This “REC memory mode”is convenient for performing this
adjustment. During recording, the input signal FUNCTION will
automatically switch to VIDEO.
(If do not operation of stopped from recording complete, and rotette
of shuttle knob then rewind to recording start position.)
1. Press MD (VIDEO) button to select VIDEO. (This step is not
necessary if the above test mode has already been set.)
2. Insert a tape into deck B.
3. After press REC PAUSE/START button, press REC PAUSE/
START button, then recording start.
4. Mode: Record
5. Mode: Playback
6. Confirm playback the signal recorded in step 3 become
adjustable level as follows.
If these levels do not adjustable level, adjustment the RV304
(L-CH) and RV354 (R-CH) on the AUDIO board to repeat steps
4 and 5.
Adjustable level: Playback output of 315 Hz to playback output
of 10 kHz: ±1.0 dB
Adjustment Location: MAIN board
REC Level Adjustment DECK B
Procedure:
INTRODUCTION
When set to the test mode performed in Tape Speed Adjustment,
when the tape is rewound after recording, the “REC memory mode”
which rewinds only the recorded portion and playback is set.
This “REC memory mode”is convenient for performing this
adjustment. During recording, the input signal FUNCTION will
automatically switch to VIDEO.
(If do not operation of stopped from recording complete, and rotate
of shuttle knob then rewind to recording start position.)
1. Press MD (VIDEO) button to select VIDEO. (This step is not
necessary if the above test mode has already been set.)
2. Insert a tape into deck B.
3. After press REC PAUSE/START button, press REC PAUSE/
START button, then recording start.
attenuator
set
MD/VIDEO (AUDIO) IN
1) 315 Hz
2) 10 kHz 50 mV (–23.8 dB)



600 Ω
blank tape
CN-123
AF OSC
+
–
set
recorded
portion
CN301 (Pin 3: L-CH)
(Pin 1: R-CH)
level meter
set
MD/VIDEO (AUDIO) IN
315 Hz, 50 mV (–23.8 dB)
blank tape
CS-123
600 Ω
attenuator
AF OSC
+
–
set
recorded
portion
CN301 (Pin 3: L-CH)
(Pin 1: R-CH)
level mete
r
TAPE SPEED
RV1002 RV1001
(NORMAL) (HIGH)
CN1001
         
CN301
RV354
RV304
RV351
CN304
T11
RV11
RV302
RV301
RV303
REC LEVEL (L)
(B) PB LEVEL (L)
(A)
PB LEVEL (L)
(B)
REC LEVEL (R)
(B)
REC BIAS (R)
(B)
REC BIAS (L)
(B)

19
HCD-VP800AV
FM Tuned Level Adjustment
Procedure:
1. Supply a 28 dB 98 MHz signal from the ANTENNA terminal.
2. Tune the set to 98 MHz.
3. Adjust RV11 to the point (moment) when the TUNED indicator
will change from going off to going on.
Adjustment Location: MAIN board
Null Adjustment
Procedure:
1. Supply a 25 dB 98 MHz signal from the ANTENNA terminal.
2. Tune the set to 98 MHz.
3. Measure voltage between pin 22 and pin 3 of IC 11. Adjust
T11 ubtil the voltage becomes 0 V.
Adjustment Location: MAIN board
Adjustment Location
[MAIN BOARD] Component side
FM RF SSG
75
Ω coaxial
Carrier frequency : 98 MHz
Modulation : AUDIO 1 kHz, 75 kHz
deviation (100%)
Output level : 28 dB (at 75
Ω open)
FM ANTENNA terminal
(TM1)
set
FM RF SSG
75 Ωcoaxial
Carrier frequency : 98 MHz
Modulation : AUDIO 1 kHz, 75 kHz
deviation (100%)
Output level : 25 dB (at 75 Ω open)
FM ANTENNA terminal
(TM1)
set
CD SECTION
CN301
RV354
RV304
RV351
CN304
T11
RV11
IC11
12 1
13 24
RV302
RV301
RV303
NULL
FM TUNED LEVEL
Note :
1. CD Block is basically designed to operate without adjustment.
Therefore, check each item in order given.
2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10MΩimpedance.
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 (FEO).
2. Connect between TP (FE) and TP (DVC) by lead wire.
3. Turn Power switch on.
4. Load a disc (YEDS-18) and actuate the focus search. (In
consequence of open and close the disc tray, actuate the focus
search)
5. Confirm that the oscilloscope waveform (S-curve) is
symmetrical between A and B. And confirm peak to peak level
within 4 ±1 Vp-p.
7. After check, remove the lead wire connected in step 2.
Note : •Try to measure several times to make sure than the ratio
of A : B or B : A is more than 10 : 7.
•Take sweep time as long as possible and light up the
brightness to obtain best waveform.
RF Level Check
Procedure :
1. Connect oscilloscope to TP (RFAC).
2. Turned Power switch on.
3. Load a disc (YEDS-18) and playback.
4. Confirm that oscilloscope waveform is clear and check RF signal
level is correct or not.
5. Measure the RFDC in the same way.
symmetry
S-curve waveform
within 4
± 1Vp-p
A
B
TP(RFAC)
TP(DVC)
BD board
oscilloscope
BD board
Oscilloscope
TP(FE)
TP(DVC)

20
HCD-VP800AV
Note: Clear RF signal waveform means that the shape “◊”can be
clearly distinguished at the center of the waveform.
RF signal waveform
E-F Balance (1 Track jump) Adjustment
Procedure:
1. Connect oscilloscope to TP (TE) and TP (DVC) board.
2. Turned Power switch on.
3. Load a disc (YEDS-18) and playback the number five track.
4. Press the Xbutton. (Becomes the 1track jump mode.)
5. Confirm that the level B and A(DC voltage) on the oscilloscope
waveform.
1 track jump waveform
Specification level: x100=less than ±22%
6. Adjust RV101 so that (DC voltage) becomes 0.
7. After check, remove the lead wire connected in step 1.
VOLT/DIV : 200mV
TIME/DIV : 500ns
level : 1.1 ± 0.3Vp-p
oscilloscope
BD board
TP (TE)
TP (DVC)
+
–
0V
Center of
waveform
B
Symmetry
A (DC voltage
)
level=1.3 ± 0.6Vp-p
IC103
IC101
TP(RFDC)
TP(TE) TP(FE)
TP(SE)
TP (DVC)
TP
(RFAC)
RV101
TP
(XPCK)
Adjustment Location :
[ BD (CD) BOARD ] — SIDE B —