Harman Kardon FL-8550 Service manual

harman/kardon

Model

FL8550

5 Disc Compact Disc Changer

Service Manual

CONTENTS

LASER BEAM/SAFETY PRECAUTIONS ......…....... 2

SPECIFICATIONS ..………………. …………..…...... 4

CONTROLS.....……………………………….............. 5

REAR PANEL CONNECTIONS…………………....... 6

REMOTE CONTROL.........…………………….. ….... 7

TROUBLE SHOOTING GUIDE .................……........ 8

SERVICE BULLETIN H/K9901...................……........ 9

SERVICE BULLETIN H/K2000-09.............……....... 10

TECH TIP HKTT2003-06..........…….......……...….... 11

DISASSEMBLY INSTRUCTIONS ...............……..... 12

EXPLODED VIEWS...............………………...…….. 17

harman/kardon, Inc.

250 Crossways Park Dr.

Woodbury, New York 11797 Rev1 11/2003

ADJUSTMENT PROCEDURES……….……...21
AUDIO TEST PROCEDURE…………………..25

CIRCUIT DESCRIPTIONS ...............…….......27

I.C. SPECIFICATIONS ....……...………......... 35

ELECTRICAL PARTS LIST ..………………... 61

MECHANICAL PARTS LIST ......…………..... 67

TROUBLESHOOTING FLOW CHARTS……. 68
BLOCK DIAGRAM .…………………………... 73

PCB LAYOUTS .…………………………….....74

SCHEMATIC DIAGRAMS .......... ……........... 78

PACKING………….........…….....…………..... 83

LASER BEAM SAFETY PRECAUTIONS

CLASS 1 LASER PRODUCT

CAUTION
Invisible laser radiation when the unit is open.
Do not stare into beam.

CAUTION: USE OF ANY CONTROLS, ADJUSTMENT, OR
PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN
MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

Do not look directly at the laser beam
coming from the pickup or allow it to

FL8550

strike against your skin.

This compact disc player uses a pickup that emits a laser beam. The laser beam is emitted from the
location shown in the figure. When checking the laser diode, be sure to keep your eyes at least 1 foot away

from the pickup lens when the diode is turned on. Do not look directly at the laser beam.

CAUTION:

Using controls and adjustment, or doing procedures other than those specified herein, may result in
hazardous radiation exposure.

2

SAFETY PRECAUTIONS

WARNING

To prevent fire or shock hazard, do not

FL8550

This symbol is intended to alert the user to
the presence of uninsulated "dangerous
voltage" within the product's enclosure that
may be of sufficient magnitude to consti­tute a risk of electric shock to persons.

This symbol is intended to alert the user to
the presence of important operating and
maintenance (servicing) instructions in the
literature accompanying the appliance.

Caution: To p re v e nt e l e ct r i c s h o ck d o not use this

(polarized) plug with an extension cord, recep­tacle or other outlet unless the blades can be
fully inserted to prevent blade exposure.

Attention: Pour prevenir les chocs electriques ne pas

utiliser cetre fiche polarisee avec un
prolongateur, une prise de courant ou une au­tre sortie de courant, sauf si les lames prevent
etre inserees a fond-sans en laisser aucune
partie a decouvert.

expose the unit to rain or moisture.

HANDLING LASER PICKUP

The laser diode in the optical system of this player can be damaged by electrostatic discharge from
your clothes or your body. Proper electrostatic grounding for service personal is required during servicing.

BEFORE REPAIRING THE COMPACT DISC PLAYER

Preparation

Human Body Grounding:
Many of the components used in this compact disc player, including the laser pickup, are sensitive to
electrostatic discharge. Service personal should be grounded with an electrostatic armband (1 Mohm).

Caution:
Static charge on clothing does not escape through a body grounding wrist band.
Be careful not to contact the pickup or electrical components with your clothing.

Workbench and Tool Grounding:
A properly-grounded electroconductive plate (1Mohm) or metal sheet should be fitted to the workbench
surface. Tools and instruments (such as soldering irons and scopes) should be grounded to prevent AC

leakage.

Note: Laser diodes are so susceptible to damage from static electricity that, even if a static discharge does
not ruin a diode, it can shorten its life or cause it to work improperly.

3

GENERAL INFORMATION

4

1. Power Consumption Operating < 18W; Standby < 5W

2. Power Supply 230VAC 50Hz or 120VAC 60Hz

3. Dimensions 440 x 130 x 386 mm

4. Product Outlook Refer to attached diagram

5. Remote Unit RT03, harman/kardon remote code

6. Compliance Requirement CE LVD EN60065
CE EMC EN55013, EN61000-3-2, EN61000-3-3
NRTL/C
FCC
HDCD

7. Disc Changer Mechanism 5 disc carousel; Play 1 change 4

FL8550

8. Sound Processor HDCD

9. CD Servo System Auto Alignment

AUDIO SPECIFICATION

Typical Limit

Output Level 1KHz 0 dB(no HDCD) 2.0 Vrms ± 1 dB
Frequency Response 20Hz~20KHz reference 1KHz +0-0.5 dB +0.5-1 dB
THD 1KHz 0 dB 30KHz LPF 0.004% 0.01%
THD 20Hz~20KHz 0 dB 30KHz LPF 0.015%
S/N 1KHz 0 dB A-weighted 105 dB 100 dB
Dynamic Range 100 dB 95 dB
Channel Seperation 1KHz 0 dB 95 dB 90 dB
Channel Balance ± 0.5 dB ± 1 dB
De-emphasis ± 0.5 dB ± 1 dB
Maximum Headphones Level 1KHz 0 dB 32 ohm Load 1.5 Vp-p ± 2 dB

Black Dot TCD725A 1000 µm 600 µm
Interruption MCD-131 900 µm 600 µm
Finger Print TCD725A 75 µm 65 µm
Vertical Deviation MCD-151 1.00 mm 0.92 mm
Eccentricity TCD712 140 µm 140 µm
8 cm disc TCD783 Last Track Last Track
Access Time 1st to last track YEDS18 4 sec 10 sec

7

Front Panel Controls

5

21

20

22

18

FL8550

16

15

14

13

12

1719

FL 8550

Power Phones Phones Level

1

2

Power Switch

1

3

4

: Press this switch

5

to change the FL8550 from STANDBY
to ON. When the unit is first
connected to AC power, the

Mode Indicator

2

Status

will turn Amber
(STANDBY mode). Press this switch
to turn the unit ON; indicator will
Green and the

Information Display

20

will illuminate. Press the switch again
to turn the unit off, in STANDBY mode.
When the FL8550 is connected to a
switched AC outlet, such as those
found on the back of many audio
products, when power is applied it will
return to whatever state it was left in
previously, whether ON or STANDBY.
In this case, when always left ON,
further use of the power switch is not
needed.

Status Mode Indicator

2

: When the
FL8550 is in the ON mode, this
indicator will glow green. When the
unit is off, the indicator will glow
amber, indicating that the unit is still
connected to the AC mains supply.

3

Headphones Jack

: Connect a set
of standard headphones to this jack
for private listening.

4

Headphones Level

: Turn this
knob to increase or decrease the
volume level for headphones
connected to the FL8550's

Headphones Jack

3

. Note that
changing this level will not change the
sound level for the unit's main output,
as that remains constant.

CD Drawer

5

: This drawer holds the

discs that will be played. Press the

Open/ Close

button to open

11

1

the drawer so that discs may be
inserted.

Time Button

: In normal operation,
this display will show the running time
of the track being played. Press the
button once to check the time
remaining for the track in play. Press

321

Disc Skip54

DISC TRACK

1 32 4 5

INTRO

MIN

SEC

PROGRAM
RANDOM

ALL 1 DISCS
REPEAT 1A-B

Time Repeat Intro Clear Program

3

1

2

4

5

6

7

8

9

10

11

13

12

14

15

16

18

17

19

20

667 8 9 10 11

this button again to view the total play
time remaining for the disc in play.

7

Repeat Button

: Press this button
once to constantly repeat the track
currently being played. Press it a
second time to repeat the entire disc.

Intro Button

8

: Press this button to
put the FL8550 in the Intro Scan
mode. When you press the button,
the unit will play the first 10 seconds
of each track on the disc, and then

Stop Button

15

stop the disc currently being played.

16

Skip Button

this button to move to the next track ,
or to move back to the previous track
on the disc being played.

Search Button

17

of this button to search forward or
backwards through a disc to
locate a particular portion of the
selection of the disc being played.

move to the next track. Press the

Disc Skip Button

button again to defeat the function
and continue full play of the current
track.

18

button to change to the next disc. If a
disc position is empty, the FL8550 will
automatically search for the next

9

Clear Button

: Press this button to

position that contains a disc.

remove tracks from a programmed

Disc Select Buttons

sequence. Each press of the button
will remove one track, starting with
the last track programmed to play.

Program Button

10

: This button is
used to program the playback of a
disc in a particular order.

Open/ Close

11

open or close the disc drawer. DO

: Press this button to

NOT push the drawer to close it, or
damage to the transport mechanism
may result.

Random Button

12

: Press this
button to put a disc into play, and to
have all of the tracks played in a

19

of these buttons to select the disc in a
specific position in the CD drawer.

20

Information Display

provides details about the operation
of the FL8550.

Remote Sensor

21

behind this window receives
commands from the remote control.
Keep this area clear if you wish to use
the FL8550 with a remote control.

22

HDCD Indicator: This LED will light
automatically when a CD with HDCD
encoding is playing.

random order.

Pause Button

13

: Press this button
once to momentarily pause a disc.
When the button is pressed again, the
disc will resume play at the point it
was paused.

Play Button

14

: Press this button to
start the playback of a CD. If the CD
drawer is open, pressing this button
will automatically close the drawer.

PausePlaySkip

Stop RandomSearch

Open/Close

: Press this button to

: Press either side of

: Press either side

: Press this

: Press one

: This display

: The sensor

4

Rear Panel Connections

6

2 4 531

FL8550

(YCL).

MODEL NO: FL8550
HARMAN KARDON
NORTHRIDGE
CALIFORNIA, U.S.A.

MADE IN CHINA

LEFT

IN

RIGHT

OUT

DIGITAL
OUTPUT

This device complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference,

AC INPUT

AC 117V / 60Hz

1

and (2) this device must accept any interference
received, including interference that may cause

20W

undesired operation.

AC Power Cord

OUTPUTREMOTE

AUDIO

CAUTION

RISK OF ELECTRIC SHOCK

RISK OF ELECTRIC SHOCK

DO NOT OPEN

SHOCK HAZARD : DO NOT OPEN.

SHOCK HAZARD : DO NOT OPEN.

AVIS:RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR.

AVIS:RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR.

WARNING: "TO REDUCE THE RISK OF FIRE OR

ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE
TO RAIN OR MOISTURE."

DO NOT OPEN

SERIAL NO.

NRTL/C
LR46800
CSA 22.2

UL 1270

PRODUCT COMPLIES WITH DHHS
RULES 21CFR SUBCHAPTER J,
APPLICABLE AT DATE MANUFACTURED:

Connect this plug to an AC outlet. If the outlet is switch is controlled, make certain that the switch is in the ON
position.

2

Coaxial Digital Output

Connect this jack to the coaxial digital input of an external digital-to-analog converter for direct access to the digital
signals of the FL8550. DO NOT connect this jack to the standard audio inputs of any device.

3

Remote Control Input

Connect the output of a remote infrared sensor or the remote control output of another compatible Harman Kardon
product. This will enable the remote control system to operate even when the front panel is

Remote Sensor

21

blocked. It will also allow use of the FL8550 with optional, external control systems.

4

Remote Control Output

Connect this jack to the input of another compatible Harman Kardon remote controlled device to have the remote
sensor on the FL8550 provide signals to other products.

5

Fixed Audio Outputs

Connect these jacks to the CD audio inputs of your receiver, surround processor or preamplifier.

5

Remote Control Functions

7

1

FL8550

. Press this button to open or close

Open/ Close Button:

1

the disc drawer. The drawer may also be closed by
pressing the button . DO NOT push the
drawer, as damage to the transport mechanism may
result.

Play

14

8

Disc Select Buttons:

2

DISC NO.

1 2 3

2

4 5

DISC
SKIP

OPEN/
CLOSE

REPEAT

16
15

PROGRAM321

14

4 5 6 CLEAR

13

3

TIME987

12

+10 INTRO

10

11

4

RANDOMSEARCH

10

5

SKIP

9
8

6

7

select the disc in a specific position in the CD drawer.

Numeric Buttons:

3

specific track on a disc. The FL8550 will immediately
search for the track and begin to play it. For tracks 1
through 10 on a disc, you need only press the desired
number. For tracks 10 and above, press the button
to select the first digit of the track number, and then
press the second digit from these numeric buttons.
These buttons are also used to enter track numbers into
the memory for pre-programmed play lists.

+10 Button:

4

track number above 10. Each press of the button
increases the first digit one increment. Press it once to
start accessing tracks 10 through 19 twice to start
accessing tracks 20 through 29, and so forth. For
example, to select track 22, press the button twice,
and then press the button .

Search Buttons:

5

or backwards through a disc to locate a particular
portion of the selection being played.

Skip Buttons:

6

next track , or to move back to the previous track
on the disc being played.

Press this button to select the first digit of a

Press one of these buttons to

Press these buttons to select a

10+

+10

2

Press these buttons to search forward

Press one of these buttons to move to the

3

4

7

FL 8550

11

Intro Button:

play the first 10 seconds of each track on the disc, and then move to the next track. Press the button again to defeat
the function and continue full play of the current track.

Time Button:

12

of the track being played. Press the button once to check the time remaining for the track in play. Press the button a
third time to view the total play time remaining for the disc in play.

Clear Button:

13

remove one track, starting with the last track programmed to play.

Program Button:

14

Repeat Button:

15

to repeat the entire disc.

Press this button to put the FL8550 into the Intro Scan mode. When you press this button, the unit will

Press this button to select the time display. In normal operation, the display will show the running time

Press this button to remove tracks from a programmed sequence. Each press of the button will

This button is used to program the playback of a disc in a particular order.

Press this button once to constantly repeat the track currently being played. Press it a second time

Stop Button:

being played.

Play Button:

8

CD. If the CD drawer is open, pressing this button will
automatically close the drawer.

Random Button:

9

and to have all of the tracks played in a random order.

Pause Button:

10

stop a disc. When the button is pressed again, the disc
will resume play at the point it was stopped.

Press this button to stop the disc currently

Press this button to start the playback of a

Press this button to put a disc into play,

Press this button once to momentarily

Disc Skip Button:

16

automatically search for the next position that contains a disc.

Press this button to change to the next disc. If a disc position is empty, the FL8350 will

6

Troubleshooting Guide

8

SYMPTOM

CAUSE

FL8550

SOLUTION

No lights on front panel

Remote does not appear
to operate

Front panel lights, but CD
does not play

Play indicator lights, but
no sound is heard

Sound skips or stutters
during play

Sound is continually distorted

• No AC power

• Main Power Switch turned off

• Weak batteries

• Blocked sensor

• Disc upside down

• Moisture inside unit

•Poor connections

• Wrong source selected

• Disc may be damaged

• Surface vibrations

• Incorrect input

• Make certain that the AC power cord is plugged into
a live outlet.

• Turn on Main Power Switch.

• Install fresh batteries, observing polarity indications.

• Remove obstructions from the front panel sensor or
connect a remote sensor to the
on the rear panel.

• Reload disc with label side facing up.

• Leave the unit turned ON for 30 minutes to allow
moisture to evaporate.

• Make certain connections are secure and made
to the correct (e.g.,

• Select CD source on receiver or preamp.

• Try another disc.

• Isolate the unit from vibration by placing it on a
firm surface or move it further away from speakers.

• Make certain that the FL8550 is connected to a line­level audio input, NOT a digital audio or phono input.

CD) input.

Remote In jack

9

harman/kardon

Service Bulletin

Service bulletin # H/K9901 Rev1 November 2002

Warranty Labor Rate: Major Repair
To: All harman/kardon Service Centers
Models: FL8350/FL8550
Subject: “No disc” reading in display

When a CD is in the carousel at the play position, Infra red light emitted by IR LED D3 is reflected onto IR Photo
sensor D2. D3 and D2 are on the PCB located underneath the carousel. When the amount of IR light received
by D2 is insufficient, D2 will not saturate and the display will read “No disc”.

In the event you receive an FL8350 or FL8550 with the complaint: Display reads “No disc” but a disc is in
the tray, perform the modification as listed below:

Lay the unit on a padded surface.

1)

2)

Remove the (7) Black Philips screws holding the Top Cover on; remove cover.

3)

Lay unit on its side and remove (5) Black screws on bottom which hold front panel to chassis.

4)

Lay unit upright, remove (2) Black screws at top front section holding front panel to the front tray retainer brackets.

5)

Pull front panel away, cut plastic cable ties if necessary, and lay the front panel face down on the table.

6)

Remove (4) tray retainer brackets, (1) Plated screw each. (Bracket on left side may have a ground terminal).

7)

Pull the carousel tray up and out of the unit; turn upside-down to expose the sensor board.

8)

Remove the (2) Plated screws holding the sensor board to tray.

9)

Lift the board and unplug either molex connector CN1 or CN2 to be able to turn board upside-down.

10)

Locate R1 and change from a 470Ω to a 750Ω resistor - h/k part# 1007-501316-000.

11)

Locate R2 and change from a 750Ω to a 470Ω resistor - h/k part# 1004-701316-000.

Alternately, the two above parts may just be “swapped”, as this will result in the correct values.

12) Locate D3 and replace with new infra-red LED - h/k part# 3100-204000-002.
REASSEMBLY:

13) Replace sensor board, screws, and CN1 or CN2 connectors.

14) Turn the carousel tray over and replace back in the track; tray must be positioned all the way at the rear of the unit.
When placed correctly, tray should not glide back & forth on the track.

15) Replace and attach the (4) tray retainer brackets with single screws - ground wire (if present) is re-attached to left
front bracket.

16) Replace the front panel, both with the (5) bottom screws and the (2) screws at the top. Note: Make sure any
washers that were present between the various brackets and the chassis are reinstalled. Replace cable ties as
necessary.

17) Test the player by inserting one or more compact discs, assure unit reads discs in all slots.

18) Locate MCU board, which is mounted vertically on right side of unit. Connect DC Multimeter to Pin 8 (gray wire) of
CN705 (10 pin plug, labeled 'DSNS'), and Pin 2 (red wire) of CN701 (2 pin plug). While playing a disc, DC Multimeter
reading must be between 4.7 V and 5.0 V.

19) Replace top cover and screws.

Model Serial number (120V) Serial number (230V) Status Action

FL8350

FL8550

FL8350

FL8550

YC0001-01001

to
YC0001-37014
YC0003-01001

to
YC0003-08666
YC0001-37015

and above

YC0003-08667

and above

YC0002-01001

to
YC0002-16673
YC0004-01001

to
YC0004-04884
YC0002-16674

and above

YC0004-04885

and above

Needs Modification

Changed by factory

R1 with
R2 with 470 Ω

NONE REQUIRED

Replace:

750 Ω

D3

harman/kardon

10

Service bulletin # H/K2000-09 November 2000 This is considered a Minor Repair

To: All harman/kardon Service Centers

Models: FL8350/FL8550

Subject: Carousel does not stop

In the event you receive an FL8350 or FL8550 with the complaint: “The carousel does not stop at a given
disc position, …or passes disc positions intermittently”, perform the modification listed below:

1) Lay the unit on a padded surface.

2) Remove the (7) Black Philips screws holding the Top Cover on; remove cover.

3) In the center of the carousel are a single screw and plated washer; remove these.

4) Underneath the larger plated washer are two smaller fiber washers. These are to be removed permanently.

5) Examine the larger plated washer carefully. Upon replacement of the larger plated washer and screw, make
sure the slightly sharper, stamped edge of the washer is facing upwards.

6) Test the player by inserting one or more compact discs, assure the unit reads discs in all slots, and stops at
all positions.

IF THIS MODIFICATION DOES NOT CORRECT THE PROBLEM

7) Lay unit on its side and remove (5) Black screws on the bottom, which hold the front panel to the chassis.

8) Lay unit upright, remove (2) Black screws at top front section holding front panel to the front tray retainer
brackets.

9) Pull front panel away, cut plastic cable ties if necessary, and lay the front panel face down on the table.

10) In the center of the carousel, once again remove the single screw and plated washer.

11) Lift the carousel up and off the chassis, towards the front of the unit.

12) Turn the carousel upside-down; in the center is a hollow plastic post. Remove any excess lubricant with a
clean dry cloth or paper towel, saving it for re-application. The end of this post must be filed down
approximately 0.020” (0.5mm) with a file, Dremel tool, or similar tool. Be sure not to remove too much
material and keep the surface even (flat). Remove any debris or shavings when finished.

13) Spread and replace the saved lubricant on the new surface of the center post.

Service Bulletin

REASSEMBLY:

14) Replace the carousel and mounting screw + washer.

15) Replace the front panel, both with the (5) bottom screws and the (2) screws at the top. Note: Make sure any
washers that were present between the various brackets and the chassis are reinstalled. Replace cable ties
as necessary. Replace the top cover.

16) Test the player by inserting one or more compact discs, assure unit reads discs in all slots, and stops at all
positions.

Model Serial number (120V) Serial number (230V) Status Action

Remove small fiber washers
FL8350
FL8550

All Serial numbers

affected

All Serial numbers

affected

May need modification

in center screw of carousel; if

necessary file center post

down 0.020” (0.5mm)

harman/kardon Incorporated 250 Crossways Park Drive, Woodbury New York 11797 [phone]

11

harman/kardon

Troubleshooting tips and solutions to common service problems

For models: FL8350/FL8550/FL8380 TIP# HKTT2003-06

Complaint: Unit Will Not Play or Recognize a Disc, “Skipping”.

Possible Problem: Misalignment of the top cover and rear panel.

To test, attempt to play the unit with the top cover OFF. If symptoms persist, troubleshoot further. If the
unit will play with the cover OFF, the problem is caused by a misalignment of the top cover and the rear
panel. When the screws are tightened on the top cover, at the rear of the unit, the CD mechanism may
“warp” upward in the area of the clamper arm, which causes a “Will not Play” symptom, which shows up as
an unusual delay, with the word “Disc” in the display, after the “Play” button is pressed.

TECH TIPS

Solutions:

Washers can be added to the top rear screws to fill the gap between the top cover “lip” and rear panel.
Alternately, a spacer can be constructed of fish paper, plastic sheet, or similar material, that will fit
between the Disc Clamper and the inside of the rear panel. Choose thickness as necessary.

FL8550

12

FL8550

13

FL8550

14

15

FL8550

FL8550

16

FL8550

17

FL8550 Exploded Drawing List

18

Seq. No. Part Number Description Qty

1 6583-510002-000-01 TOP CABINET, PAINTED 1.0
2 6583-510004-001 BRACKET, FRONT PANEL 1.0
3 6083-510002-000-01 HARMAN/KARDON FL8350&FL8550 TRAY DOOR(WSILKSCREEN) 1.0
4 9483-501000-111 FL8350 POWER CONTROL BOARD ASSY REV A 1.0
5 6600-010293-000 SPRING, POWER SWITCH 1.0
6 6083-510008-000 *LENS, POWER KNOB 1.0
7 6083-5100015-000 LIGHT SHEET BLACK 1.0
8 6083-510007-000-01 KNOB, POWER PAINTED 1.0
10 6583-510006-000 BRACKET, PHONES (MIC) 1.0
11 7107-212005-022 WASHER M7 1.0
12 7112-517506-022 WASHER M12 1.0
13 6600-120120-000 NUTS M12 1.0
14 6600-120070-000 NUTS M7 1.0
15 6083-510006-000-01 KNOB VR PAINTED 1.0
16 6083-510005-000-01 KNOB, PROGRAM PAINTED 1.0
17 6083-510001-002-02 HARMAN/KARONT FRONT PANEL W/SILKCREEN&P 1.0
18 6083-510003-000-01 HARMAN/KARDON FL8550 DISPLAY LENS (W SILKSCREEN) 1.0
19 6083-510004-000-01 KNOB, DISC PAINTED 1.0
20 9485-801000-261 FL8550 DISPLAY BOARD (VFD) ASSY REV A 1.0
21 6083-510010-000-01 HARMAN/KARDON FUNCTION KNOB (W SILKSCREEN&PAINTED) 1.0
22 6083-510009-000-01 HARMAN/KARDON 'EJECT' KNOB (W SILKSCREEN&PAINTED) 1.0
23 6583-510001-001 BOTTOM CABINET 1.0
24 6029-010012-000-01 PLASTIC FOOT (HOT STAMPING) 4.0
25 6600-070003-000 CD90R05 RUBBER PAD,LEG 4.0
26 6083-510014-000 *BRACKET, 5CD-SIDE 2 1.0
27 9483-501000-232 FL8350 MCU BOARD 1.0
28 6600-020010-000 CD420L01 PCB MOUNT. 4.0
29 9485-501000-291 FL8550 DIGITAL OUTPUT BOARD 1.0
30 6600-180007-000 AC CORD BUSHING (PG5RF-5B) 1.0
31 6600-120040-000 SCREW NUT M4X7X3 2.0
32 7104-010010-022 WASHER M4X10X1MM 3.0
33 3200-480140-401 TRANSFORMER EI48 117V CUL #4801Y44T-1 (WINBOND) 1.0
34 9485-501000-013 FL8550 CD MAIN BOARD ASSY 1.0
35 9600-505004-002 5CD MECHA ASSY FOR FL8350 REV B 1.0
36 6083-510013-000 *BRACKET, 5CD-SIDE 1 1.0
37 6083-510011-000 STAND, FRONT-5CD 2.0
38 6083-510012-000 STAND, REAR-5CD 1.0
39 2610-218300-002 AC POWER CORD NON-INTEGRAL SPT-2 UL/CSA 1.0
40 6583-510003-001-03 HARMAN/KARDON FL8550 R/P (117V FCC&CSA VR) 1.0
A 7003-006001-111 SCREW M3X6 S.T.P. B/H (BLACK) 22.0
B 7003-006002-112 SCREW M3X6 P.T.P. B/H 23.0
C 7003-008002-112 SCREW M3X8 P.T.P. B/H 16.0
D 7002-606010-062 SCREW M2.6X6 W/H 8.0
E 7004-010010-112 SCREW M4X10 B/H 2.0
F 7003-016002-112 SCREW M3X16 PTP B/H ZN 3.0

FL8550

5CD EXPLODED DRAWING LIST

DC MOTOR MABUCHI RF-500TB-14415 (DC002VT00003)

19

SEQ NO.

1 6005-050050-007 BASE, 5CD 1.0
2 6005-050010-004 BRACKET, CD MECHA 1.0
3 3009-901000-000 SANYO CD MECHANISM CD90V1 1.0
4 6590-050001-001 CD90 CHUCKING METAL PLATE 1.0
5 6600-140001-000 CD90F01 CHUCKING METAL PLATE FELT RING 1.0
6 6600-020200-002 PIN, ROUND 1.0
7 6005-050008-001 CONTROL CAM 1.0
8 7105-010005-030 WASHER LOCK 5X10X0.5MM 3.0
9 6600-020198-000 5CD PIN, CONTROL CAM 1.0
10 6505-050001-001 BRACKET GEAR 1.0
11 7003-008002-112 SCREW M3X8 B TYPE B/H ZN 12.0
12 6600-010211-000 5CD SPRING, LEVER LOCK, OUTER 1.0
13 4841-010700-006 TURNTABLE PCB REV. F 1.0
14 6005-050025-002 SWITCH COVER 1.0
15 6505-050007-001 CONTACT PLATE 1.0
17 6005-050009-000 INTERMEDIATE GEAR 1.0
18 6005-050014-004 LEVER LOCK, OUTER 1.0
19 4800-310210-001 LOADER BOARD VER A 1.0
20 6005-050011-000 IDLER GEAR 1.0
21 6005-050023-001 PULLEY MOTOR 1.0
22 6005-050024-000 PULLEY DISC 1.0
23 6600-090053-000 5CD BELT MOTOR LOADING 1.0
24 6005-050013-001 DRIVEN PULLEY (WHITE) 1.0
25 6005-050027-000 BUSH, ROLLER 1.0
26 6005-050012-000 DRIVEN PULLEY PLATE 1.0
27 RF-500TB-14415
28 7003-012002-062 SCREW M3X12 P.T.P. W/H 1.0
29 7002-605005-112 SCREW M2.6X5 CLASSI B/H ZN 1.0
30 6005-050007-000 GEAR, CABINET TOP 1.0
31 6600-020197-001 PIN CABINET TOP 1.0
32 6005-050006-004 CONTROL CAM 1.0
33 7002-006001-022 SCREW M2*6 S.T.P. P/H 2.0
34 6600-020196-002 PIN, CAM CABINET 1.0
35 7103-012010-022 WASHER M3X12X1MM 1.0
36 7003-008002-062 SCREWM3X8 P TYPE W/H ZN 1.0
37 6005-050015-000 LEVER LOCK 1.0
38 6600-010210-000 SPRING LEVER LOCK 1.0
39 6600-170021-000 5CD CUSHION RING 2.0
40 6600-170019-000 5CD CUSHION B 2.0
41 6600-020181-000 5CD SCREW, SPECIAL 4.0
42 6600-170018-000 5CD CUSHION A 2.0
43 6090-050002-004 CD90 CHUCKING PULLEY 1.0
44 6600-150006-001 CHUCKING MAGNET 1.0
45 6600-020199-001 PIN, LOCK 1.0
46 6005-050002-011 CABINET TOP 1.0
47 6005-050001-006 TRUNTABLE 1.0
48 7003-012002-062 SCREW M3X12 P.T.P. W/H 1.0
49 7103-012010-022 WASHER M3X12X1MM 1.0
50 6005-050017-000 ROLLER 1.0
51 6600-020202-000 5CD PIN, ROLLER 1.0

PART NO. DESCRUPTION QTY.

1.0

FL8550

52 6600-020297-000 PIN ROLLER LOCK 1.0

20

53 6505-050005-001 BRACKET ROLLER 1.0
54 9400-501000-132 5CD SENSOR BOARD ASSY REV B 1.0
55 7103-006005-130 WASHER 3X6X0.5MM CUT 1.0
56 6600-010213-000 5CD SPRING, GEAR BLOCK ARM 1.0
57 6600-010212-002 5CD SPRING, GEAR BLOCK 1.0
58 7002-620002-062 SCREW M2.6X20 P TYPE W/H ZN 1.0
59 6005-050005-001 GEAR BLOCK ARM 1.0
60 6005-050004-003 GEAR BLOCK 1.0
61 7002-608002-002 SCREW M2.6X8 P.T.P W/H D6.5 2.0
62 6600-020203-000 5CD SHAFT, T.T. ROLLER 5.0
63 6600-080001-000 YN21R D03/04 PINCH ROLLER 5.0
64 6005-050028-000 WASHER, BUSH 1.0
65 6005-050026-002 LEVER LOCK, T.T. 1.0
66 6600-010290-001 SPRING LEVER LOCK 1.0
67 6505-050002-001 CABINET HOLDER A 2.0
68 6005-050019-000 SHAFT BUSHING 2.0
69 6005-050020-000 PULLEY ROTARY 1.0
70 6005-050021-000 GEAR ROTARY 1.0
71 6005-050022-000 GEAR WORM 1.0
72 6600-020268-000 SHAFT DIA. 2X34MM 1.0
73 6600-090052-000 5CD BELT ROTARY 1.0
74 7002-003010-111 SCREW M2X3 B/H (BLACK) 2.0
75 6005-050018-000 MOTOR PULLEY 1.0
76 FF130SH11340-2684A MOTOR FF-130SH-11340-02684A (MABUCHI) 1.0
77 6505-050004-004 MOTOR BRACKET 1.0
78 6600-020201-001 SHAFT GEAR ROTARY 1.0
79 6505-050003-001 5CD CABINET HOLDER B 2.0

FL8550

ADJUSTMENT PROCEDURES

21

Reference Disk for adjustments: Sony YEDS - 18

Mode: FL8550

Testing Equipment:

i. 5020 Frequency Response Analyzer
ii. Oscilloscope
iii. Frequency Counter
iv. Frequency Generator (Kenwood AG-203A)

FL8550

Adjustment Procedure

(A) Focus Adjustment

i. Connect Jitter Meter between TP1 (R51) and Vref (J6), then play a CD disc.
ii. Adjust VR1 until Jitter Meter get the minimum point.
iii. Connect Oscilloscope as the same as the last step. Waveform will be read as
diamond shape and voltage is about 1.1v as perfect. (see the figure 1)

Fig. 1

(B) Tracking Adjustment

22

i. Connect oscilloscope to the test point TP3 (KA9220C) and Vref (J6).
ii. Press PLAY button and adjust VR4 to maximum and press SKIP DOWN button to

make it Tracking off.

iii. Adjust VR2 to get symmetrical waveform height. After adjust VR4 to center.
iv. The result is show as below fig. 2

FL8550

Fig. 2

(C) Focus Servo Loop Gain Adjustment

23

Connection point Settings State Adjustment Location
U1 (KA9220C)
Pin 57 (R11)
Pin 56 (R12)
See fig 3

i. Set the frequency generator output to 1KHz and 100mv.
ii. Press the play key and press skip key to move the pickup to halfway across the disk
(R=35mm).
iii. Adjustment VR3(focus gain) so that the Lissajous waveform is symmetrical

above the X axis and the Y axis.

1. Oscilloscope Probe: x 10

2. Oscilloscope setting
CH1: 20mV/division
CH2: 10mV/division

Remark: X-Y mode

Play State Adjustment VR3

FL8550

Focus Gain Adjustment

Fig. 3

Higher gain Optimum gain Lower gain

(D) Tracking Servo Loop Gain Adjustment

Vref

24

Connections point Settings State Adjustment location
U1 (KA9220C)
Pin 53 (R13)
Pin 52 (R14)
See fig.4

1. Oscilloscope probe: X10

3. Oscilloscope setting
CH1: 50mV/division
CH2: 20mV/division

Play State Adjustment VR4

Remark: X-Y mode

i. Set the frequency generator output to 1KHz and 100mV.
ii. Press the play key and press skip key to move the pickup to halfway across the disk
(R=35mm).
iii. Adjustment VR4(track gain) so that the Lissajous waveform is symmetrical above

the X axis Y axis.

FL8550

Tracking Gain Adjustment

Fig 4

Higher gain Optimum gain Lower gain

Audio Characteristics Test Procedure

25

Test Equipment

1. 3346 CD Player Evaluating Filter x 2 (NF Electronic Instrument)

2. VP7722 Panasonic Audio Analyzer

3. Sony YEDS18 Test CD disc

Procedure

Equipment Setup

1. The audio output of the CD player under test is connected to the CD filter L
& R inputs.

2. The outputs from the filter are connected to the Audio Analyzer.

Check the output Voltage

1. Set the mode of the filter to ‘ THRU’

FL8550

2. Set the mode of Audio Analyzer to ‘ LEVEL’ mode

3. Select track 2 of the test disc and play the CD disc

4. The output voltage and gain of the R & L channels are taken by pressing
the respective buttons on the control board of Audio Analyzer.

Frequency Response

1. Set the mode of the filter to reference level mode.

2. Select the track 3, 4, 5, and 6 of the test disc and run it under ‘ Play’ mode.

3. Check the output of the R & L Channels

Total Harmonic Distortion

1. Set the mode of the filter to ‘ DIST/CH-SP’ mode

2. Set the audio analyzer to ‘ DIST’ mode.

3. Set the unit of the audio analyzer to ‘ %’ mode

4. Select the track 2, 4, and 5 on the test disc and run them under ‘ PLAY’
mode

5. Check the % of each R & L channels

9