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The Harman Kardon
Model FL8550
COMPACT DISC CHANGER
Technical Manual
FL 8550 1 2 3 Skip Play Pause
1 2 3 4 5
PROGRAM 1 2 3 4 5
RANDOM INTRO 6 7 8 9 10 4 5 Disc Skip Search Stop Random
DISC TRACK MIN SEC 11 12 13 14 15
ALL 1 DISCS
16 17 18 19 20
REPEAT 1A-B
Open/Close
Power Phones Phones Level Time Repeat Intro Clear Program
CONTENTS
1. LASER BEAM SAFETY PRECAUTIONS ............. 2 9. TROUBLE SHOOTING GUIDE .......................... 56
2. CONTROL AND FUNCTIONS ............................. 4 10. BLOCK DIAGRAM ............................................. 61
3. SPECIFICATIONS AND FEATURES ..................... 7 11. PCB LAYOUT ..................................................... 62
4. ADJUSTMENT PROCEDURES ........................... 8 12. SCHEMATIC DIAGRAMS .................................. 71
5. AUDIO CHARACTERISTICS TEST PROCEDURE 13. DISASSEMBLY INSTRUCTIONS ...................... 77
.............................................................................12 14. PACKING, EXPLODED LISTS ........................... 81
6. CIRCUIT DESCRIPTION ....................................14
7. CRITICAL I.C. SPECIFICATION ........................ 22
8. PART LIST ......................................................... 48
* Harman/ kardon continually strives to improve its products. The FL8350 Compact Disc Changer design and
specifications are subject to change and may differ from the published specifications and descriptions, but will
always equal or exceed the original specifications unless otherwise stated.
DANGER: Invisible laser radiation when open and interlock failed or defeated.
AVOID DIRECT EXPOSURE TO BEAM.
Parts and Service Office
250 Crossways Park Dr., Woodbury, N.Y. 11797
1112-FL8350 P9603 1200 Printed in Hong Kong
FL8550
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
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
FL8550
SAFETY PRECAUTIONS
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 consti-
tute 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 prevent electric shock do not use this
(polarized) plug with an extension cord, recep-
tacle 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 au-
tre sortie de courant, sauf si les lames prevent
etre inserees a fond-sans en laisser aucune
WARNING partie a decouvert.
To prevent fire or shock hazard, do not
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
FL8550
Front Panel Controls
21 22 19 17 15 13
20 18 16 14 12
FL 8550 1 2 3 Skip Play Pause
1 2 3 4 5
PROGRAM 1 2 3 4 5
RANDOM INTRO 6 7 8 9 10 4 5 Disc Skip Search Stop Random
DISC TRACK MIN SEC 11 12 13 14 15
ALL 1 DISCS
16 17 18 19 20
REPEAT 1A-B
Open/Close
Power Phones Phones Level Time Repeat Intro Clear Program
1 2 3 4 5 6 7 8 9 10 11
1 Power Switch: Press this switch this button again to view the total play 15 Stop Button: Press this button to
to change the FL8550 from STANDBY time remaining for the disc in play. stop the disc currently being played.
to ON. When the unit is first
connected to AC power, the Status 7 Repeat Button: Press this button 16 Skip Button: Press either side of
Mode Indicator 2 will turn Amber once to constantly repeat the track this button to move to the next track ,
(STANDBY mode). Press this switch currently being played. Press it a or to move back to the previous track
to turn the unit ON; indicator will second time to repeat the entire disc. on the disc being played.
Green and the Information Display 20
will illuminate. Press the switch again 8 Intro Button: Press this button to 17 Search Button: Press either side
to turn the unit off, in STANDBY mode. put the FL8550 in the Intro Scan of this button to search forward or
When the FL8550 is connected to a mode. When you press the button, backwards through a disc to
switched AC outlet, such as those the unit will play the first 10 seconds locate a particular portion of the
found on the back of many audio of each track on the disc, and then selection of the disc being played.
products, when power is applied it will move to the next track. Press the
return to whatever state it was left in button again to defeat the function 18 Disc Skip Button: Press this
and continue full play of the current button to change to the next disc. If a
previously, whether ON or STANDBY.
track. disc position is empty, the FL8550 will
In this case, when always left ON,
automatically search for the next
further use of the power switch is not
9 Clear Button: Press this button to position that contains a disc.
needed.
remove tracks from a programmed
2 Status Mode Indicator: When the sequence. Each press of the button 19 Disc Select Buttons: Press one
will remove one track, starting with of these buttons to select the disc in a
FL8550 is in the ON mode, this
the last track programmed to play. specific position in the CD drawer.
indicator will glow green. When the
unit is off, the indicator will glow 20 Information Display: This display
10 Program Button: This button is
amber, indicating that the unit is still provides details about the operation
used to program the playback of a
connected to the AC mains supply. of the FL8550.
disc in a particular order.
3 Headphones Jack: Connect a set
11 Open/ Close: Press this button to 21 Remote Sensor: The sensor
of standard headphones to this jack behind this window receives
open or close the disc drawer. DO
for private listening. commands from the remote control.
NOT push the drawer to close it, or
4 Headphones Level: Turn this damage to the transport mechanism Keep this area clear if you wish to use
may result. the FL8550 with a remote control.
knob to increase or decrease the
volume level for headphones
12 Random Button: Press this 22 HDCD Indicator: This LED will light
connected to the FL8550's
button to put a disc into play, and to automatically when a CD with HDCD
Headphones Jack 3 . Note that
have all of the tracks played in a encoding is playing.
changing this level will not change the
random order.
sound level for the unit's main output,
as that remains constant.
13 Pause Button: Press this button
once to momentarily pause a disc.
5 CD Drawer: This drawer holds the
When the button is pressed again, the
discs that will be played. Press the
disc will resume play at the point it
Open/ Close button 11 1 to open
was paused.
the drawer so that discs may be
inserted.
14 Play Button: Press this button to
start the playback of a CD. If the CD
6 Time Button: In normal operation, drawer is open, pressing this button
this display will show the running time
will automatically close the drawer.
of the track being played. Press the
button once to check the time
remaining for the track in play. Press
4
FL8550
Rear Panel Connections
1 2 3 4 5
IN LEFT CAUTION MODEL NO: FL8550
HARMAN KARDON
RISK OF ELECTRIC SHOCK
DO NOT OPEN NORTHRIDGE
OUT RIGHT CALIFORNIA, U.S.A.
SHOCK HAZARD : DO NOT OPEN.
SHOCKHAZARD : DO NOT OPEN.
AVIS:RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR.
AVIS:RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR.
DIGITAL AUDIO MADE IN CHINA
OUTPUT REMOTE OUTPUT
SERIAL NO.
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
and (2) this device must accept any interference
AC 117V / 60Hz received, including interference that may cause
20W PRODUCT COMPLIES WITH DHHS
undesired operation.
RULES 21CFR SUBCHAPTER J,
WARNING: "TO REDUCE THE RISK OF FIRE OR
APPLICABLE AT DATE MANUFACTURED:
ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE NRTL/C
TO RAIN OR MOISTURE." (YCL).
LR46800
CSA 22.2
UL 1270
1 AC Power Cord
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 Remote Sensor 21 is
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
FL8550
Remote Control Functions
1
.1 Open/ Close Button: Press this button to open or close
the disc drawer. The drawer may also be closed by
pressing the Play button 14 8 . DO NOT push the
drawer, as damage to the transport mechanism may
result.
2 Disc Select Buttons: Press one of these buttons to
DISC NO.
select the disc in a specific position in the CD drawer.
OPEN/
1 2 3 CLOSE
3 Numeric Buttons: Press these buttons to select a
16 specific track on a disc. The FL8550 will immediately
2 DISC
4 5 SKIP REPEAT search for the track and begin to play it. For tracks 1
15 through 10 on a disc, you need only press the desired
number. For tracks 10 and above, press the 10+ button 4
1 2 3 PROGRAM
to select the first digit of the track number, and then
14 press the second digit from these numeric buttons.
4 5 6 CLEAR
These buttons are also used to enter track numbers into
13 the memory for pre-programmed play lists.
3
7 8 9 TIME 4 +10 Button: Press this button to select the first digit of a
12 track number above 10. Each press of the button
increases the first digit one increment. Press it once to
10 +10 INTRO start accessing tracks 10 through 19 twice to start
11 accessing tracks 20 through 29, and so forth. For
4 example, to select track 22, press the +10 button twice,
SEARCH RANDOM
and then press the 2 button 3 .
10
5 9 5 Search Buttons: Press these buttons to search forward
SKIP
or backwards through a disc to locate a particular
8
portion of the selection being played.
6 7
6 Skip Buttons: Press one of these buttons to move to the
next track , or to move back to the previous track
on the disc being played.
FL 8550 7 Stop Button: Press this button to stop the disc currently
being played.
8 Play Button: Press this button to start the playback of a
CD. If the CD drawer is open, pressing this button will
automatically close the drawer.
9 Random Button: Press this button to put a disc into play,
and to have all of the tracks played in a random order.
10 Pause Button: Press this button once to momentarily
stop a disc. When the button is pressed again, the disc
will resume play at the point it was stopped.
11 Intro Button: Press this button to put the FL8550 into the Intro Scan mode. When you press this button, the unit will
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.
12 Time Button: Press this button to select the time display. In normal operation, the 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 the button a
third time to view the total play time remaining for the disc in play.
13 Clear Button: Press this button to remove tracks from a programmed sequence. Each press of the button will
remove one track, starting with the last track programmed to play.
14 Program Button: This button is used to program the playback of a disc in a particular order.
15 Repeat Button: Press this button once to constantly repeat the track currently being played. Press it a second time
to repeat the entire disc.
16 Disc Skip Button: Press this button to change to the next disc. If a disc position is empty, the FL8350 will
automatically search for the next position that contains a disc.
6
FL8550
GENERAL INFORMATION
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
8. Sound Processor HDCD
9. CD Servo System Auto Alignment
AUDIO SPECIFICATION
Typical Limit
Output Level 1KHz 0 dB(no HDCD) 2.0 Vrms