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harman/kardon
Model FL8385
5 Disc Compact Disc Changer
SERVICE MANUAL
CONTENTS
LASER BEAM SAFETY PRECAUTIONS.........2 TEST PROCEDURE..................................... 14
OTHER PRECAUTIONS ................................ 3 CIRCUIT DESCRIPTION........... ... .............. 16
SPECIFICATIONS .......................................... 4 DETAILED TROUBLESHOOTING ............... 20
FRONT PANEL CONTROLS........... ... .......... 5 SEMICONDUCTOR IDENTIFICATION........... 26
REAR PANEL CONNECTIONS....................... 8 MECHANICAL PARTS LIST ......................... 49
REMOTE CONTROL FUNCTIONS.................9 ELECTRICAL PARTS LIST .......................... 51
BASIC TROUBLESHOOTING GUIDE............10 PRINTED ClRCUlT BOARDS .............. ........ 60
GENERAL UNIT EXPLODED VIEW ..... ...... ..11 SCHEMATIC DIAGRAMS............................... 64
5 CD MECHANISM EXPLODED VIEW ..........12 PACKAGE ...............................................70
BLOCK DIAGRAM .....................................13
harman/kardon, Inc.
250 Crossways Park Dr.
Woodbury, New York 11797 Rev1 3/2004
FL8385 harman/kardon
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
FL8385 harman/kardon
FL8380
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
FL8385 harman/kardon
TECHNICAL SPECIFICATIONS 15
FL8385 TECHNICAL SPECIFICATIONS
Signal Format
Sampling Frequency 44.1kHz
HDCD Processing Burr-BrownTM PCM1732
D/A Conversion Dual 18-Bit
Oversampling 8 Times
Discrete Analog Output Section
Error Correction CIRC System
Frequency Response 20Hz 20kHz +0, 1dB
THD (1KHz) <0.02% @1kHz (30KHz Filter)
THD) (1KHz) <0.02% @1kHz (No Filter)
THD 20Hz~20KHz 0dB <0.02% @1kHz (30KHz Filter)
Dynamic Range >97dB
S-Noise Ratio 0dB A-weighted (A Filter) >97dB
Channel Separation 1KHz 0dB (30KHz Filter) 80dB
Channel Balance ±0.5dB
De-emphasis (5KHz,16KHz) ±0.5dB
Line-Level Output (no HDCD) 1.0 Vrms ±1dB
Line-Level Output (HDCD Output) 2.0 Vrms ±2dB
Digital Output Coax
Headphone output specification under 32 ohm load
Maximum Headphone Output Level 1KHz 0dB 1.5Vp-p
Frequency Response (20~20KHz) ±1dB
THD 20~20KHz 0dB (30KHz Filter) 0.1%
Test Disc Specification
Typical Limit
Black Dot TCD 725B 1000um 600um
Interruption MCD-131 900um 600um
Finger print 75um 65um
Vertical Deviation MCD-151 0.92mm 0.92mm
Eccentricity TCD 712 40um 140um
8cm test disc TCD 783 Last Track Last Track
Access Time 1st to last track YEDS18 4 sec 10 sec
General
Power Requirement 120V/60Hz
Power Consumption 20 Watts
Dimensions Height 5.1" (129mm)
Width 17.3" (440mm)
Depth 15.2" (386mm)
Weight 14.5 lb (6.6kg)
Depth measurement includes knobs and buttons. Height measurement includes feet and chassis.
All features and specifications are subject to change without notice.
4
FL8385 harman/kardon
FRONT-PANEL CONTROLS
$ # @ ! ) 9
FL 8385 1 2 3 PLAY/PAUSE STOP
4 5
8
DISK SKIP << SEARCH >> Í<< SKIP >>Í
7
Power Phones Phones Level
1 2 3 4 5 6
1 Power Switch 6 Open/Close Button ! Disc Skip Button
2 Status Mode Indicator 7 Search Button @ Disc Select Buttons
3 Headphones Jack 8 Skip Button # Information Display
4 Headphones Level Control 9 Stop Button $ Remote Sensor
5 CD Drawer ) Play/Pause Button
NOTE: To make it easier to follow the instructions that refer to this illustration, a larger copy may be downloaded from the Product Support section for this product at
www.harmankardon.com.
1 Power Switch: Press this switch to apply power NOTES: 9 Stop Button: Press this button to stop the disc cur-
to the FL 8385. When the FL 8385 is first turned on · Always adjust the headphones level to the minimum rently being played.
by pressing this switch, the Status Mode Indicator possible to avoid the possibility of damage to the lis-
2 will turn blue, and the Information Display # tener's hearing from unwanted white noise or other ) Play/Pause Button: Press this button to start the
will light. Press the switch again to turn the unit off; the transient noises. playback of a CD. If the CD drawer is open, pressing
Status Mode Indicator 2 will turn amber, indicating · When inserting a disc, wait until the FL 8385 has this button will automatically close the drawer. Press this
that the unit is in a Standby mode. When the FL 8385 recognized the disc before using headphones in button once during play to momentarily pause a disc.
is connected to a switched AC outlet, such as those order to avoid the possibility of hearing potentially When the button is pressed again, the disc will resume
found on the back of many audio products, it will damaging white noise. play at the point it was paused.
return to the Standby mode when power is applied to
the switched outlet without any further press of the 5 CD Drawer: This drawer holds the discs that will ! Disc Skip Button: Press this button to change to
switch. be played. Press the Open/Close Button 6 to open the next disc. If a disc position is empty, the FL 8385
the drawer so that discs may be inserted. will automatically search for the next position that con-
2 Status Mode Indicator: When the FL 8385 is tains a disc.
in the On mode, this indicator will glow blue. When 6 Open/Close Button: Press this button to open
the unit is off, the indicator will glow amber, indicating or close the disc drawer. DO NOT push the drawer @ Disc Select Buttons: Press one of these buttons
that the unit is still connected to the AC main supply. to close it or damage to the transport mechanism to select the disc in a specific position in the CD drawer.
may result.
3 Headphones Jack: Connect a set of standard # Information Display: This display provides details
headphones to this jack for private listening. 7 Search Button: Press one side of this button to about the operation of the FL 8385.
search forward -- or the other side of the button
4 Headphones Level Control: Turn this knob to to search backwards , through a disc to locate a $ Remote Sensor: The sensor behind this window
increase or decrease the volume level for headphones particular portion of the disc being played. receives commands from the remote control. Keep
connected to the FL 8385's Headphones Jack 3. this area clear if you wish to use the FL 8385 with a
Note that changing this level will not change the sound 8 Skip Button: Press one side of this button to remote control.
level for the unit's main output, as that remains constant. move to the next track --Í or the other side of the
button to move back to the previous track Ífifi on
the disc being played.
5 FRONT-PANEL CONTROLS 5
FL8385 harman/kardon
FRONT-PANEL INFORMATION DISPLAY
QO M K I G
R PN L J H
A B C D E F
A Random Indicator G Total Time Indicator M Repeat Indicator
B Sequential Indicator H Program Indicator N Disc Mode Indicator
C Disc Number Display I Remaining Time Indicator O Single Mode Indicator
D Track Number Display J Intro Scan Indicator P Pause Indicator
E Time Display K Loaded Disc Indicators Q All Mode Indicator
F Remaining Tracks Display L HDCD Indicator R Play Indicator
NOTE: To make it easier to follow the instructions that refer to this illustration, a larger copy may be downloaded from the Product Support section for this product at
www.harmankardon.com.
A Random Indicator: This indicator will light when F Remaining Tracks Display: When a disc is first I Remaining Time Indicator: This indicator will
any of the three Random modes described on page selected, the numbers for each of the tracks on that light when the remaining time on the current disc or in
12 have been selected. disc will light, up to 16 tracks. During playback the the current track has been selected for display. See
current track number will flash, and all remaining page 12 for more information on the time display
B Sequential Indicator: This indicator will light track numbers will remain lit. The numbers of the function.
when the Random, All, Sequential playback mode has preceding tracks will go dark. When playback is
been selected. The FL 8385 will play all tracks on the stopped, all of the track numbers available on the J Intro Scan Indicator: This indicator will light
current disc in random order, then advance to the next current disc will light, even if they were previously when the Intro Search mode has been selected as
available disc and play all of its tracks in random order, played. If a disc contains more than 16 tracks, the described on page 13. This mode enables you to
and so on until all discs have been played once. higher-numbered tracks may be played and their num- search for a particular track by previewing the first 10
bers will appear in the Track Number Display D seconds of each track of each loaded disc, and then
C Disc Number Display: The current disc number when selected, but those numbers will not appear in selecting the desired track.
will be displayed here. the Remaining Tracks Display F.
K Loaded Disc Indicators: When the unit is turned
D Track Number Display: The current track G Total Time Indicator: This indicator will light on, the indicators for all disc positions will light, with
number will be displayed here. when the total time on the current disc has been the current disc indicated by a flashing red ring. As the
selected for display. See page 12 for more information FL 8385 circulates through all disc positions, the indi-
E Time Display: This indicator will display either the on the time display function. cators for positions found to be empty will go out. This
total running time of the disc currently playing, the total display will refresh any time the CD Drawer 5 is
running time of the track currently playing or the time H Program Indicator: This indicator will light when opened.
remaining on the currently playing disc. See page 12 the FL 8385 has been placed in programmed-play
for more information on the Time Display E. mode. It will remain lit while a play list is being pro-
grammed and during playback of a play list.
6 FRONT-PANEL INFORMATION DISPLAY 6
FL8385 harman/kardon
FRONT-PANEL INFORMATION DISPLAY
L HDCD Indicator: This indicator will light when a
disc encoded in the HDCD format is played. In order
to benefit from the FL 8385's HDCD decoding, the
Analog Audio Outputs must be connected to
corresponding inputs on your receiver or processor,
and those inputs must be selected. If you have only
connected the Coaxial Digital Audio Output TM to
your receiver or processor, you will not hear HDCD
playback unless your receiver/processor includes an
HDCD decoder. Playback of non-HDCD-encoded
discs using the Analog Audio Outputs will be
enhanced due to the improved filters incorporated in
the FL 8385's microprocessor.
M Repeat Indicator: This indicator will light when
any of the four repeat modes described on pages 13
and 14 has been selected.
N Disc Mode Indicator: This indicator will light
when either the Random, All Tracks/Discs or Repeat
Disc modes has been selected.
O Single Mode Indicator: This indicator will light
when either the Random 1 disc or Repeat 1 track or
disc modes has been selected.
P Pause Indicator: This indicator will light when
playback has been paused.
Q All Mode Indicator: This indicator will light
when any of the Random All Sequential, Random
All Tracks/Discs or Repeat All Discs modes has
been selected.
R Play Indicator: This indicator will light during
playback.
7 FRONT-PANEL INFORMATION DISPLAY 7
FL8385 harman/kardon
REAR-PANEL CONNECTIONS
¡ TM £¢
¡ AC Power Cord ¢ Remote Control Input
TM Coaxial Digital Output Analog Audio Outputs
£ Remote Control Output
NOTE: To make it easier to follow the instructions that refer to this illustration, a larger copy may be downloaded from the Product Support section for this product at
www.harmankardon.com.
¡ AC Power Cord: Connect this plug to an AC outlet. ¢ Remote Control Input: Connect the output of a
If the outlet is switch-controlled, make certain that the remote infrared sensor or the remote control output of
switch is in the ON position. another compatible Harman Kardon product. This will
enable the remote control system to operate even
TM Coaxial Digital Output: Connect this jack to the when the front panel Remote Sensor $ is blocked.
coaxial-digital input of a digital audio/video receiver or an It will also allow use of the FL 8385 with optional,
external digital-to-analog converter for direct access to external control systems.
the digital signals of the FL 8385. DO NOT connect this
jack to the standard audio inputs of any device. Analog Audio Outputs: Connect these jacks to
the analog CD audio inputs of your receiver, surround
£ Remote Control Output: Connect this jack to the processor or preamplifier.
input of another compatible Harman Kardon remote
controlled device to have the remote sensor on the
FL 8385 provide signals to other products.
8 REAR-PANEL CONNECTIONS 8
FL8385 harman/kardon
REMOTE CONTROL FUNCTIONS
a Disc-Select Buttons
b Numeric Buttons
c Clear Button
d Search Buttons 1
DISC NO.
2 ON
POWER
OFF
e Skip Buttons p
a o
f Stop Button 3 4 5 +
g Play Button
1
TRACK NO.
2 3
DISC
SKIP
n
h Random Button
i Pause Button
4 5 6 REPEAT
j Program Button m
k Time Button b
7 8 9 INTRO
l Intro Button l
m Repeat Button 0 CLEAR PROGRAM TIME
k
n Disc Skip Buttons
c SEARCH RANDOM
j
o Power On Button i
p Power Off Button d h
SKIP
g
NOTE: To make it easier to follow the instructions that e
refer to this illustration, a larger copy may be down-
f k Time Button: In normal operation, the display
will show the running time of the track being played.
loaded from the Product Support section for this prod- Press the button once to check the time remaining for
uct at www.harmankardon.com. the track in play. Press the button again to view the
total play time remaining for the disc in play. (See
a Disc-Select Buttons: Press one of these page 12 for more information.)
buttons to select the disc in a specific position in the FL 8385 RC
CD drawer. l Intro Button: Press this button to put the FL 8385
into the Intro Scan mode. When you press this button, the
b Numeric Buttons: Press these buttons to select unit will play the first 10 seconds of each track on the
a specific track on a disc. The FL 8385 will immedi- disc, and then move to the next track. Press the button
ately go to the track and begin to play it. These but- again to defeat the function and continue full play of the
tons are also used to enter track numbers into the current track. (See page 13 for more information.)
memory for preprogrammed-play lists. (See page 13
for complete information on programming the m Repeat Button: Press this button once to continu-
FL 8385.) ously repeat the track currently being played. Press it a
second time to repeat the entire disc. (See pages 13 and
c Clear Button: Press this button to remove tracks 14 for more information.)
from a programmed sequence. Each press of the but- g Play Button: Press this button to start the play-
ton will remove one track, starting with the last track back of a CD. If the CD drawer is open, pressing this n Disc Skip Buttons: Press these buttons to
programmed to play. (See page 13 for complete infor- button will automatically close the drawer. change to the next disc. If a disc position is empty, the
mation on programming the FL 8385.) FL 8385 will automatically search for the next position
h Random Button: Press this button to play all of that contains a disc.
d Search Buttons: Press these buttons to search the tracks on a disc in a random order. (See page 12
forward -- or backwards , through a disc to for more information.) o Power On Button: When the FL 8385 is plugged
locate a particular portion of the selection being into an active AC outlet, press this button to turn the unit
played. i Pause Button: Press this button once to on. The Status Mode Indicator 2 will turn blue. If the
momentarily pause a disc. When the button is pressed unit is plugged into a switched outlet, power must be
e Skip Buttons: Press one of these buttons to again, the disc will resume play from the point at which applied to the switched outlet in order for the Power On
move to the next track --Í or to move back to the it was paused. Button o to be effective.
previous track Í, on the disc being played.
j Program Button: This button is used to pro- p Power Off Button: Press this button to turn the
f Stop Button: Press this button to stop the disc gram the playback of a disc in a particular order. (See unit off; the Status Mode Indicator 2 will turn amber,
currently being played. page 13 for complete instructions on programming indicating that the unit is in a Standby mode.
the FL 8385.)
9 REMOTE CONTROL FUNCTIONS 9
FL8385 harman/kardon
TROUBLESHOOTING GUIDE
SYMPTOM POSSIBLE CAUSE SOLUTION
No lights on front panel · No AC power · Make certain that the AC power cord is plugged into a live outlet
Remote does not appear to operate · Main Power Switch turned off · Turn on Main Power Switch
· Weak batteries · Install fresh batteries, observing polarity indications
· Blocked sensor · Remove obstructions from the front panel sensor, or connect
a remote sensor to the Remote Control Input ¢ jack
0on the rear panel
Front panel lights but CD does not play · Disc upside down · Turn CD over so that label side faces up
· Moisture inside unit · Leave the unit turned ON for 30 minutes to allow
moisture to evaporate
Play indicator lights but no sound is heard · Receiver or preamp and amp · Turn on all necessary equipment
not turned on
· Poor connections · Make certain connections are secure and made to
· Wrong source selected the correct (e.g., CD) input
· Select CD source on receiver or preamp
Sound skips or stutters during play · Disc may be damaged · Try another disc
· Surface vibrations · Isolate the unit from vibration by placing it on a firm surface
or move it further away from speakers
Sound is continually distorted · Incorrect input · Make certain that the FL 8385 is connected to a line-level
audio input, NOT a digital audio or phono input
14 TROUBLESHOOTING GUIDE
10
FL8385 harman/kardon
FL8385
11
FL8385
5-CD MECHANISM 9600-505007-001
12
FL8385 BLOCK DIAGRAM FL8385 harman/kardon
AN4801
13
FL8385 harman/kardon
FL8380
Audio Characteristics Test Procedure
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'
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
14
FL8385 harman/kardon
FL8380
Signal to Noise Ratio
1. Set the mode of the filter to ` S/N' mode
2. Play track 2 of the test disc
3. The unit of the audio analyzer is set to dB mode
4. Press the S/N key on the control panel of the audio analyzer
5. Play track 7
6. Measure the data of S/N ratio
Dynamic Range
1. Set the mode of the filter to ` D-Range' mode
2. Set the audio analyzer to ` DIST' Mode
3. Set the unit of the audio analyzer to ` dB' mode
4. Play track 17of the test disc
5. The dynamic range should be |A| + 60dB
Channel Separation
1. Set the mode of the filter to ` DIST/CH-SP' mode
2. Set the audio analyzer to ` LEVEL' mode
3. Play the tracks 8, 9, 10 & 11
4. The measured results is the difference between L & R channel
De-emphasis
1. Press the ` THRU' button of the CD filter
2. Play the track 2 of the test disc
3. Press the ` Relative Level' and make it ` ON'
4. Select the track 12 and 13 and measure the L & R channels value
15
FL8385 harman/kardon
FL8380
FUNCTION DESCRIPTION
Tracking System
To Focus System
VREF1 VREF2
R15
32
Subtraction
GCTRL
TBAL
R14
31
E
A B
TEN
C D
28 21 23 30 25 24
R10
VGCTRL C15 C5
F
C2
R5
C8
VTBAL TEOUT
PDIC
The tracking error output of E and F is given to Pin 25 (TEOUT). C8 is required for
oscillation-proof. R10 is chosen such that TEOUT of Pin 25 become 1.4Vp-p.
During alignment procedure, the DSP IC (MN662790) will adjust the tracking balance
voltage VTBAL from Pin 31. VTBAL varies with reference to the center voltage VREF2 (=1.65 V)
within ±0.5 V.
The tracking gain will change according to the type of disc. For normal disc or CDR disc,
VGCTRL is set to VREF2; for CDRW disc VGCTRL is set to VREF2 - 0.75 V. At the same time, the
focus gain is changed too.
16
FL8385 harman/kardon
FL8380
C47 R27
Focus System
R21
R20
C35
3 5
36
E
35
Subtraction
A B
C D GCTRL
FBAL
34
F
33
FEN
28 29 27 26
R7
VGCTRL C3
C2
R6
C4
PDIC VFBAL FEOUT
The focus error output of A, B, C and D are given to Pin 27. C4 is required for oscillation-
proof. R7 is set such that FEOUT of Pin 27 becomes 1.46 Vp-p.
During alignment procedure, the DSP IC (MN662790) will adjust the focus balance voltage
VFBAL from Pin 30. VFBAL varies with reference to the center voltage VREF2 (=1.65 V) within
±0.5 V.
The focus gain will change according to the type of disc. For normal disc or CDR disc,
VGCTRL is set to VREF2; for CDRW disc VGCTRL is set to VREF2 - 0.75 V. At the same time, the
tracking gain is changed too.
17
FL8385 harman/kardon
FL8380
RF, EQ, AGC
C47 R27
ARF NRFDET ENV
VCC1 VCC1
R21 C29
R20
C28 C39
C35 RFOUT C38
3 5 6 8 9 10 17 11 12
EQ AGC ENV
DETECTION
RF
DETECTION
36
35
C2
GCTRL 28
34 VGCTRL
33
The signals A, B, C and D input from PDIC are composed into the RF signal by the RF
Addition Amp, then output from RFOUT of Pin 5. This Amp is designed so that RFOUT is
about 0.5 Vp-p for normal CD disc (about 0.4 Vp-p for CDR and 0.12 Vp-p for CDRW).
RF signal from Pin 5 is then input to the AGC block through the EQ block (the EQ
characteristic is fixed for single speed operation in this design). It is then gain-controlled
and output to Pin 10 ARF. The AGC block maintains the output level of ARF to about
1.0Vp-p for all types of disc. C38 connected to Pin 9 is for the AGC loop filter.
The RF Detection block detects the amplitude of the RF signal inputted from the EQ block.
Inputted RF signal is detected after passing through a high-pass filter. Detection level is
changed in accrodance with the voltage of GCTRL Pin 28.
The ENV detection block detects the fluctuation of the 3T-composition in the RF signal
which is needed for focus balance adjustment. C39 connected to Pin 11 forms a filter for
detecting the signal fluctuation. The ENV output signal from Pin 12 is filtered by C29.
18
FL8385 harman/kardon
FL8380
APC
19 LDON
VCC1
C33 R18
2 Q1 LASER UNIT
LD
170mV
1
PD
The laser diode has large negative temperature characteristic in its optical output when
driven with a constant current on laser diode. Therefore, the output on processing monitor
photo diode, must be a controlled current for getting regular output power, thus the APC
(Auto Power Control) circuit is composed.
Reference Power Supply
VCC1 VCC2
R R
20 VREF1 22 VREF2
R R
R/2 R/2
A reference power supply for servo is built-in. The current capacity of the reference supply
is about 3 mA.
VREF1 = 1/2 VCC1 = 2.5 V
VREF2 = 1/2 VCC2 = 1.65 V
where VCC1 = 5 V and VCC2 = 3.3 V
19
FL8385 harman/kardon
FL8380
20
FL8385 harman/kardon
FL8380
21
FL8385 harman/kardon
FL8380
pin 14,17
10,11
22
FL8385 harman/kardon
FL8380
23
FL8385 harman/kardon
FL8380
24
FL8385 harman/kardon
FL8380
25
FL8385 harman/kardon
FL8380
MN662790RSA1
Signal Processing LSI for CD Players
Overview
The MN662790RSA is a CD signal processing LSI that, (Audio circuits)
on a single chip, combines optics servos for the CD player Digital filter using 8-fold oversampling
(focus, tracking, and traverse servos), digital signal Built-in D/A converter (1-bit D/A converter)
processing (EFM demodulation and error correction), Built-in differential operational amplifier (secondary
digital servo processing for the spindle motor, digital low pass filter)
filter, and D/A converter, so thus covers all signal
processing functions from the head's RF amplifier onward. (Other)
Built-in playback pitch control function (normal
Features speed only) (±13%)
(Optics servo) Support for quadruple-speed playback (digital servo
Focus, tracking, and traverse servos and signal processing block only)
Automatic adjustment functions for FO/TR gain, Built-in support for jitter-free disc rotation synchro-
FO/TR offset, and FO/TR balance nization playback
Built-in D/A converter for drive voltage output Oscillator shutdown mode
Built-in dropout countermeasures Power management mode
Anti-shock functions Operating voltage 3.3 V for internal circuit; 5 V for
Built-in track cross counter Digital input pins
Traverse speed detection function Applications
CD players
(Digital Signal Processing)
Built-in DSL and PLL
Frame synchronization detection, holding, and
insertion
Subcode data processing
Subcode Q data CRC check
Built-in subcode Q data register
CIRC error detection and correction
C1 decoder: duplex error correction
C2 decoder: triplex error correction
Built-in 16-K bits of RAM for use in de-
interleaving
Audio data interpolation
Averaging or retention of previous values
Digital attenuation (12 dB)
Audio data peak level detection function
Digital audio interface (EIAJ format)
Audio data serial interface for input and output
(Spindle Motor Servo)
CLV digital servo
Switchable servo gain
26
FL8385 harman/kardon
FL8380
MN662790RAS1
Pin Assignment
VCOF2
AVDD2
WVEL
PLLF2
VCOF
AVSS2
SBCK
SUBC
PLAY
DSLF
PLLF
EFM
PCK
DRF
ARF
VDD
IREF
VSS
X2
X1
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
BYTCK/TVSTOP 61 40 LDON
CLDCK 62 39 BDO
FCLK 63 38 RFDET
IPFLAG 64 37 TRCRS
FLAG 65 36 OFT
CLVS 66 35 VDET
CRC 67 34 RFENV
DEMPH 68 33 TE
FLAG6/RESY 69 32 FE
IOSEL 70 31 TBAL
TEST 71 30 FBAL
AVDD1 72 29 VREF
OUTL 73 28 FOD
AVSS1 74 27 TRD
OUTR 75 26 KICK
RSEL 76 25 ECS
CSEL 77 24 ECM
PSEL 78 23 PC
MSEL 79 22 TVD
SSEL 80 21 TRV
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
BCLK
LRCK
SRDATA
DVDD1
DVSS1
TX
MCLK
MDATA
MLD
SENSE
FLOCK
TLOCK
BLKCK
SQCK
SUBQ
DMUTE
STAT
RST
SMCK
PMCK
(TOP VIEW)
QFS080-P-1414
27
FL8385 harman/kardon
FL8380
MN662790RAS1
Block Diagram
51
AVSS2 75
50 OUTR
OVER SAMPLING
AVDD2
DIGITAL FILTER
DEEMPHASIS
PWM
(R)
LRCKIN/MSEL
+
DIGITAL
1 BIT DAC
BCLKIN/SSEL
LOGICS
8 TIMES
SRDATEIN/PSEL
73
OUTL
PWM
70
(L)
IOSEL
+
66 74
CLVS AVSS1
67 72
CRC AVDD1
13
BLKCK
62 65
CLDCK FLAG
56 64
SBCK IPFLAG
55
SUBC
INTERFACE
68
DEMPH
DIGITAL
69 6
AUDIO
FLAG6/RESY TX
SRAM
80
SUBCODE
BUFFER
SSEL
14
CIRC ERROR CORRECTION 16K
SQCK