Read Harman Kardon FL 8370 (serv.man3) Service Manual online
Power
Phones
Phones Level
FL 8370
Time
Repeat
Intro
Clear
Program
Open/Close
Pause
Play
Skip
Stop
Random
Search
3
2
1
Disc Skip
5
4
Technical Manual
The Harman Kardon
Model FL 8370
Model FL 8370
COMPACT DISC CHANGER
DANGER: Invisible laser radiation when open and interlock failed or defeated.
AVOID DIRECT EXPOSURE TO BEAM.
CONTENTS
Parts and Service Office
250 Crossways Park Dr., Woodbury, N.Y. 11797
1112-FL8350 P9603 1200 Printed in Hong Kong
250 Crossways Park Dr., Woodbury, N.Y. 11797
1112-FL8350 P9603 1200 Printed in Hong Kong
1.
LASER BEAM SAFETY PRECAUTIONS ............. 2
2.
CONTROL AND FUNCTIONS............................. 4
3.
SPECIFICATIONSAND FEATURES..................... 7
4.
AUDIO CHARACTERISTICS TEST PROCEDURE
.............................................................................9
.............................................................................9
5.
CIRCUIT DESCRIPTION ....................................11
6.
CRITICAL I.C. SPECIFICATION ........................ 18
7.
PART LIST ......................................................... 49
8.
TROUBLE SHOOTING GUIDE .......................... 64
9.
BLOCK DIAGRAM .............................................
70
12. DISASSEMBLY INSTRUCTIONS ....................
.... 89
13. GENERAL UNIT PARTSLIST .........................
..... 94
10. SCHEMATIC DIAGRAMS ..................................
71
11. PCB LAYOUT .....................................................
74
*
Harman/ kardon continually strives to improve its products.
The Fl8370 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.
always equal or exceed the original specifications unless otherwise stated.
LASER BEAM SAFETY PRECAUTIONS
CLASS 1 LASER PRODUCT
CAUTION
Invisible laser radiation when the unit is open.
Do not stare into beam.
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.
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.
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.
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.
hazardous radiation exposure.
2
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.
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.
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.
(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
partie a decouvert.
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
partie a decouvert.
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.
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).
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.
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.
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.
not ruin a diode, it can shorten its life or cause it to work improperly.
WARNING
To prevent fire or shock hazard, do not
expose the unit to rain or moisture.
expose the unit to rain or moisture.
3
Power Switch
Status-Mode
Indicator
Information Display
Status-Mode Indicator
Status Mode Indicator
Headphones Jack
Headphones Level Control
Headphones Jack
CD Drawer
Open/ Close
Time Button
Repeat Button
Intro Button
Clear Button
Program Button
Open/ Close Button
Random Button
Pause Button
Play Button
Stop Button
Skip Button
Search Button
Disc Skip Button
Disc Select Buttons
Information Display
Remote Sensor
: Press this switch
to apply power to the Fl8370. When
the FL 8370 is first turned on by
pressing this switch, the
will turn green, and the
will illuminate.
Press the switch again to turn the unit
off; the
will
turn amber, indicating that the unit is
in a Standby mode. When the FL
8370 is connected to a switched AC
outlet, such as those found on the
back of many audio products, it will
return to the Standby mode when
power is applied to the switched
outlet without any further press of the
switch.
: When the
Fl8370 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.
: Connect a set
of standard headphones to this jack
for private listening.
: Turn
this knob to increase or decrease the
volume level for headphones
connected to the FL8370's
. Note that
changing this level will not change the
sound level for the unit's main output,
as that remains constant.
: This drawer holds the
discs that will be played. Press the
button to open the
drawer so that discs may be inserted.
: Press this button to
select the time display. 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 this button again to view the
total play time remaining for the disc
in play.
: Press this button
once to constantly repeat the track
currently being played. Press it a
second time to repeat the entire disc.
: Press this button to
put the Fl8370 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 move to
the next track. Press the button again
to defeat the function and continue
full play of the current track.
: 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.
: This button is
used to program the playback of a
disc in a particular order.
: Press this
button to open or close the disc
drawer. DO NOT push the drawer to
close it or damage to the transport
mechanism may result.
: Press this
button to put a disc into play, and to
have all of the tracks played in a
random order.
: 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.
: Press this button to
start the playback of a CD. If the CD
drawer is open, pressing this button
will automatically close the drawer.
: Press this button to
stop the disc currently being played.
: Press one side of
this button to move to the next track
or the other side of the button to
move back to the previous track
on the disc being played.
: Press one side of
this button to search forward or
the other side of the button to search
backwards through a disc to
locate a particular portion of the disc
being played.
: Press this
button to change to the next disc. If a
disc position is empty, the FL8370 will
automatically search for the next
position that contains a disc.
: Press one
of these buttons to select the disc in a
specific position in the CD drawer.
: This display
provides details about the operation
of the FL 8370.
: The sensor
behind this window receives
commands from the remote control.
Keep this area clear if you wish to use
the FL 8370 with a remote control.
HDCD Indicator: This LED will
light automatically when a CD with
HDCD encoding is playing. No
further action is needed to enjoy the
benefits of HDCD.
Power
Phones
Phones Level
FL 8370
Time
Repeat
Intro
Clear
Program
Open/Close
Pause
Play
Skip
Stop
Random
Search
3
2
1
Disc Skip
5
4
1
3
2
4
5
6
7
8
9
10
11
11
10
15
16
17
19
20
20
22
21
21
22
12
12
13
13
14
14
15
18
Front Panel Controls
1
3
3
2
2
4
5
6
11
20
7
8
9
16
17
18
19
FL8370
4