Sony HCD-NEZ31 User manual

SERVICE MANUAL
COMPACT DISC DECK RECEIVER
HCD-NEZ31
Ver. 1.0 2006.08
SPECIFICATIONS
9-887-362-01
2006H05-1
© 2006.08
Sony Corporation
Personal Audio Division
Published by SonyTechno Create Corporation
Mexican Model
•HCD-NEZ31 is the amplifier, CD player, tape deck
and tuner section in CMT-NEZ31.
Model Name Using Similar Mechanism HCD-NEZ30
CD Section Base Unit Name BU-K8BD83S-WOD
Optical Pick-up block Name KSM-213CDP
TAPE Section Model Name Using Similar Mechanism HCD-NEZ30
Tape Transport Mechanism Type CMAL5Z235A
Amplifier section
Continuous RMS power output (reference): 15 + 15 W (6 ohms at 1 kHz,
10% THD)
The following are measured at AC 120 V, 60 Hz
DIN power output (rated): 11 + 11 W (6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference): 15 + 15 W (6 ohms at 1 kHz,
10% THD)
Inputs
AUDIO IN: Sensitivity 250 mV, impedance 47 kilohms
Outputs
PHONES: Accepts headphones with an impedance of 8 ohms or more
SPEAKER: Accepts impedance of 6 to 16 ohms
CD player section
System: Compact disc and digital audio system
Laser Diode Properties
Emission Duration: Continuous
Laser Output*: Less than 44.6µW
* This output is the value measurement at a distance of 200 mm from the
objective lens surface on the Optical Pick-up Block with 7mm aperture.
Tape deck section
Recording system: 4-track 2-channel, stereo
AM tuner section:
Tuning range
530 – 1,710 kHz (with 10 kHz tuning interval)
531 – 1,710 kHz (with 9 kHz tuning interval)
Antenna: AM loop antenna, external antenna terminal
Intermediate frequency: 450 kHz
General
Power requirements
AC 120 V, 60 Hz
Adjustable with voltage selector
Power consumption:
45 watts
Dimensions (w/h/d) (excl. speakers):
Mass (excl. speakers):
Approx. 3.3 kg
Approx. 164 ×235 ×265 mm
Design and specifications are subject to change without notice.
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section:
Tuning range
87.5 – 108.0 MHz (50 kHz step)
Antenna: FM lead antenna
Antenna terminals: 75 ohms unbalanced
Intermediate frequency: 10.7 MHz

2
HCD-NEZ31
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 the 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.
TABLE OF CONTENTS
1. SERVICING NOTES ............................................... 3
2. GENERAL ................................................................... 5
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 7
3-2. Cabinet............................................................................. 7
3-3. Cabinet (Top) Section ...................................................... 8
3-4. Base Unit (BU-K8BD83S-WOD) ................................... 8
3-5. Front Panel Section ......................................................... 9
3-6. Mechanical Deck (CMAL5Z235A) ................................ 9
3-7. MAIN Board .................................................................... 10
3-8. Tuner (FM/AM) ............................................................... 10
4. TEST MODE.............................................................. 11
5. MECHANICAL ADJUSTMENTS ....................... 12
6. ELECTRICAL ADJUSTMENTS ......................... 13
7. DIAGRAMS
7-1. Block Diagram – CD SERVO Section – ......................... 15
7-2. Block Diagram – MAIN Section – .................................. 16
7-3. Printed Wiring Board – CD Board – ............................... 18
7-4. Schematic Diagram – CD Board – .................................. 19
7-5. Printed Wiring Boards – MAIN Section – ...................... 20
7-6. Schematic Diagram – MAIN Section (1/2) – .................. 21
7-7. Schematic Diagram – MAIN Section (2/2) – .................. 22
7-8. Printed Wiring Board – PANEL Board – ........................ 24
7-9. Schematic Diagram – PANEL Board – ........................... 25
7-10. Printed Wiring Boards – DC Section – ........................... 26
7-11. Printed Wiring Board – AC Board – ................................ 27
7-12. Schematic Diagram – POWER SUPPLY Section – ........ 28
8. EXPLODED VIEWS
8-1. Cabinet Section................................................................ 34
8-2. Mechanical Deck Section ................................................ 35
8-3. Panel Board Section ........................................................ 36
8-4. Cabinet (Top) Section ...................................................... 37
8-5. MAIN Board Section ....................................................... 38
8-6. AC Board, DC Board Section ......................................... 39
9. ELECTRICAL PARTS LIST................................ 40
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR 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.

3
HCD-NEZ31
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
During normal operation of the equipment, emission of the laser
diode is prohibited unless the upper lid is closed while turning ON
the S820. (push switch type)
The following checking method for the laser diode is operable.
•Method
Emission of the laser diode is visually checked.
1. Open the upper lid.
2. Push the S820 as shown in Fig.1.
Note: Do not push the detection lever strongly, or it may be bent or damaged.
3. Press the ubutton.
4. Check the object lens for confirming normal emission of the
laser diode. If not emitting, there is a trouble in the automatic
power control circuit or the optical pick-up.
In this operation, the object lens will move up and down 2
times along with inward motion for the focus search.
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 HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
SECTION 1
SERVICING NOTES
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
•Unleaded solder melts at a temperature about 40 ˚C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 ˚C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
•Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
•Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
Fig.1 Method to push the S820
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.
S820

4
HCD-NEZ31
SERVICE POSITION
– CD BOARD –
–TAPE MECHANICAL DECK –
CD board
cabinet (top) section
tape mechanical dec
k

5
HCD-NEZ31
SECTION 2
GENERAL This section is extracted from
instruction manual.
Basic Operations
Before using the system
To use the remote
Slide and remove the battery compartment lid , and
insert the two supplied R6 (size AA) batteries, side
first, matching the polarities shown below.
Notes on using the remote
• With normal use, the batteries should last for about six months.
• Do not mix an old battery with a new one or mix different types of
batteries.
• If you do not use the remote for a long period of time, remove the
batteries to avoid damage from battery leakage and corrosion.
To set the clock
1 Turn on the system.
Press (power) .
2 Select the clock set mode.
Press CLOCK/TIMER SET on the remote. If the
current mode appears on the display, press /
on the remote repeatedly to select “CLOCK” and
then press ENTER on the remote.
3 Set the time.
Press / on the remote repeatedly to set
the hour, and then press ENTER on the remote.
Use the same procedure to set the minute.
The clock settings are lost when you disconnect the
power cord or if a power failure occurs.
Playing a CD/MP3 disc
1 Select the CD function.
Press CD on the remote.
2 Place a disc.
Press PUSH OPEN/CLOSE on the unit,
and place a disc with the label side up on the CD
compartment.
To close the CD compartment, press PUSH OPEN/
CLOSE on the unit.
PUSH OPEN/CLOSE
3 Start playback.
Press (play) on the remote (or CD/ (play/
pause) on the unit).
To Press
Pause playback (pause) on the remote (or
CD/ (play/pause) on the
unit). To resume play, press the
button again.
Stop playback (stop) .
Select a folder on an
MP3 disc
+/– (select folder) .
Select a track or file / (go back/go forward)
.
Find a point in a
track or file
Hold down / (rewind/fast
forward) during playback,
and release the button at the
desired point.
Select Repeat Play REPEAT on the remote
repeatedly until “REPEAT” or
“REPEAT 1” appears.
To change the play mode
Press PLAY MODE repeatedly while the player is
stopped. You can select normal play (“ ” for all MP3
files in the folder on the disc), shuffle play (“SHUF” or
“SHUF*”), or program play (“PGM”).
* When playing a CD-DA disc, ( SHUF) Play performs the same
operation as normal (SHUF) Play.
Notes on Repeat Play
• All tracks or files on a disc are played repeatedly up to five times.
• “REPEAT 1” indicates that a single track or file is repeated until you
stop it.
Notes on playing MP3 discs
• Do not save other types of files or unnecessary folders on a disc that
has MP3 files.
• Folders that have no MP3 files are skipped.
• MP3 files are played back in the order that they are recorded onto
the disc.
• The system can only play MP3 files that have a file extension of
“.MP3.”
• If there are files on the disc that have the “.MP3” file extension,
but that are not MP3 files, the unit may produce noise or may
malfunction.
• The maximum number of:
– folders is 150 (including the root folder).
– MP3 files is 255.
–
MP3 files and folders that can be contained on a single disc is 256.
– folder levels (the tree structure of files) is 8.
• Compatibility with all MP3 encoding/writing software, recording
device, and recording media cannot be guaranteed. Incompatible
MP3 discs may produce noise or interrupted audio or may not play
at all.
To stop automatic scanning
Press (stop) .
To tune in a station with a weak signal
If “TUNED” does not appear and the scanning does
not stop, press TUNING MODE repeatedly until
“AUTO” and “PRESET” disappear, and then press
+/– on the remote (or TUNING +/– on the unit)
repeatedly to tune in the desired station.
To reduce static noise on a weak FM stereo
station
Press FM MODE on the remote repeatedly until
“STEREO” disappears to turn off stereo reception.
Playing a tape
1 Select the tape function.
Press TAPE on the remote.
2 Insert a tape.
Press PUSH OPEN/CLOSE on the unit, and
insert the TYPE I (normal) tape into the cassette
holder with the side you want to play facing forward.
Make sure there is no slack in the tape to avoid
damaging the tape or the tape deck. Press PUSH
OPEN/CLOSE on the unit again to close the
cassette holder.
3 Start playback.
Press (play) on the remote (or TAPE/
(play/pause) on the unit).
To Press
Pause playback (pause) on the remote (or
TAPE/ (play/pause) on the
unit). To resume play, press the
button again.
Stop playback (stop) .
Rewind or fast
forward
/(rewind/fast forward) .
Changing the display
To change Press
Information on
the display*
DISPLAY on the remote
repeatedly when the system is on.
Display mode
(See below.)
DISPLAY on the remote
repeatedly when the system is off.
* For example, you can view CD/MP3 disc information, such as the
track or file number or folder name during normal play, or the total
play time while the player is stopped.
The system offers the following display modes.
Display mode When the system is off,
1)
Clock The clock is displayed.
Power Saving
Mode
2)
The display is turned off to conserve
power. The timer and clock continue
to operate.
1)
The STANDBY indicator lights up when the system is off.
2)
When the system is in Power Saving Mode, the following functions
are unavailable:
– setting the clock.
– changing the AM tuning interval
– changing the CD power manage function
Notes on the display information
• The following are not displayed;
– total playing time for a CD-DA disc depending on the play mode.
– total playing time for an MP3 disc.
– remaining playing time for an MP3 file.
• The following are not displayed correctly;
– elapsed playing time of an MP3 file encoded using a VBR
(variable bit rate).
– folder and file names that do not follow either the ISO9660 Level
1, Level 2 or Joliet in the expansion format.
• The following are displayed;
– ID3 tag information for MP3 files when ID3 version 1 and version
2 tags are used.
– up to 30 characters of ID3 tag information using uppercase letters
(A to Z), numbers (0 to 9), and symbols (" $ % ’ ( ) * + , – . / < =
> @ [ \ ] _ ` { | }).
Selecting a music source
Press the following buttons (or press FUNCTION
repeatedly).
To select Press
CD CD on the remote.
Tuner TUNER/BAND .
Tape TAPE on the remote.
Component (connected
using an audio cord)
FUNCTION repeatedly
until “AUDIO IN” appears.
Adjusting the sound
To adjust the volume
Press VOLUME +/– on the remote (or turn the
VOLUME control on the unit) .
Notes on playing multisession discs
• If the disc begins with a CD-DA (or MP3) session, it is recognized
as a CD-DA (or MP3) disc, and playback continues until another
session is encountered.
• A disc with a mixed CD format is recognized as a CD-DA (audio)
disc.
Listening to the radio
1 Select “FM” or “AM.”
Press TUNER/BAND repeatedly.
2 Select the tuning mode.
Press TUNING MODE repeatedly until “AUTO”
appears.
To add a sound effect
To Press
Generate a more dynamic
sound (Dynamic Sound
Generator X-tra)
DSGX on the unit.
3 Tune in the desired station.
Press +/– on the remote (or TUNING +/– on the unit)
. Scanning stops automatically when a station is
tuned in, and then “TUNED” and “STEREO” (for
stereo programs) appear.
Using optional audio
components
To connect an optional headphones
Connect headphones to the PHONES jack on the
unit.
To connect an optional component
Connect additional audio component to the AUDIO
IN jack on the unit using an audio analog cord (not
supplied). Turn down the volume on the system, and then
press FUNCTION repeatedly to select the AUDIO IN
function.
Set the sound effect EQ on the remote
repeatedly to select “BASS”
or “TREBLE,” and then
press /
repeatedly to adjust the level.

6
HCD-NEZ31
Other Operations
Creating your own CD program
(Program Play)
Use buttons on the remote to create your own program.
1 Press CD to select the CD function.
2 Press PLAY MODE repeatedly until “PGM”
appears while the player is stopped.
3 Press / repeatedly until the desired
track number appears.
When programming MP3 files, press +/– (select
folder) repeatedly to select the desired folder, and
then select the desired file.
Selected track or file number
Total playing time of program
(including selected track or file)
4 Press ENTER to add the track or file to the
program.
“– –.– –” appears when the total time exceeds 100
minutes for a CD, or when you select an MP3 file.
5 Repeat steps 3 through 4 to program additional
tracks or files, up to a total of 25 tracks or files.
6 To play your program of tracks or files, press
(play) .
The program remains available until you open the CD
compartment. To play the same program again, select
the CD function, and press (play) .
To cancel Program Play
Press PLAY MODE repeatedly until both “PGM” and
“SHUF” disappear while the player is stopped.
To delete the last track or file of the program
Press CLEAR while the player is stopped.
To view program information, such as total
track number of the program
Press DISPLAY repeatedly.
Presetting radio stations
You can preset your favorite radio stations and tune
them in instantly by selecting the corresponding preset
number.
Use buttons on the remote to preset stations.
1 Tune in the desired station (see “Listening to the
radio”).
2 Press TUNER MEMORY .
Preset number
3 Press +/– repeatedly to select your desired
preset number.
If another station is already assigned to the selected
preset number, the station is replaced by the new
stations.
4 Press ENTER .
5 Repeat steps 1 through 4 to store other stations.
You can preset up to 20 FM and 10 AM stations. The
preset stations are retained for about half a day even
if you disconnect the power cord or if a power failure
occurs.
6 To call up a preset radio station, press TUNING
MODE repeatedly until “PRESET”appears,
and then press +/– repeatedly to select the
desired preset number.
Recording onto a tape
You can record on a TYPE I (normal) tape in two ways:
CD Synchro Recording:
You can record an entire CD onto a tape.
Manual Recording:
You can record just the portions you like from a sound
source, including connected audio components.
Use buttons on the unit to control tape recording.
1 Load a recordable tape with the side you want to
record facing forward.
2 Prepare the recording source.
For CD Synchro Recording:
Press CD on the remote to select the CD function.
Load the disc you want to record.
When recording a folder from an MP3 disc, press
PLAY MODE repeatedly to select “ ” and then
press +/– (select folder) repeatedly to select
the desired folder.
To record only your favorite CD tracks in your desired
order, perform steps 2 through 5 of “Creating your
own CD program.”
For Manual Recording:
Select the desired source to record.
3 Set the tape deck to stand by for recording.
For CD Synchro Recording:
Press CD SYNC .
For Manual Recording:
Press PAUSE/START .
4 Start recording.
While recording, you cannot listen to other sources.
For CD Synchro Recording:
Press PAUSE/START . When the recording
is completed, the CD player and the tape deck stop
automatically. If you are recording onto a tape and
the tape reaches the end of the front side part-way
through a track or file, “TURN TAPE” appears. Turn
the tape over to the reverse side, re-insert it, and
“PUSH REC” appears. And then press PAUSE/
START .
For Manual Recording:
Press PAUSE/START , and then start playing
the desired recording source.
If there is noise while recording from the tuner,
reposition the appropriate antenna to reduce the noise.
To stop recording
Press (stop) .
Note
Recording stops if you change to a different function.
Using the Timers
The system offers three timer functions. You cannot
activate both the Play Timer and the Rec Timer at the
same time. If you use either with the Sleep Timer, the
Sleep Timer has priority.
SleepTimer:
You can fall asleep to music. This function works even if
the clock is not set.
Press SLEEP on the remote repeatedly. If you select
“AUTO,” the system automatically turns off after the
current disc or tape stops or in 100 minutes.
Do not select “AUTO” during Synchro Recording of a
tape.
PlayTimer:
You can wake up to CD, tape or tuner at a preset time.
RecTimer:
You can record a preset radio station at a specified time.
Use buttons on the remote to control the Play Timer and
the Rec Timer. Make sure you have set the clock.
1 Prepare the sound source.
For Play Timer:
Prepare the sound source, and then press VOLUME
+/– to adjust the volume.
To start from a specific CD track or MP3 file, create
your own CD program.
For Rec Timer:
Tune in the preset radio station.
2 Press CLOCK/TIMER SET .
3 Press / repeatedly to select “PLAY
SET” or“REC SET” then press ENTER .
“ON TIME” appears, and the hour indication flashes.
4 Set the time to start playing or recording.
Press / repeatedly to set the hour,
and then press ENTER .
The minute indication flashes. Use the procedure
above to set the minute.
5 Use the same procedure as in step 4 to set the
time to stop playing or recording.
6 Select the sound source or prepare the tape.
For Play Timer:
Press / repeatedly until the desired
sound source appears, and then press ENTER . The
display shows the timer settings.
For Rec Timer:
Load a recordable tape. The display shows the timer
settings.
7 Press (power) to turn off the system.
The system turns on 15 seconds before the preset
time. If the system is on at the preset time, the Play
Timer and the Rec Timer will not play or record.
To activate or check the timer again
Press CLOCK/TIMER SELECT , press /
repeatedly until “PLAY SEL” or “REC SEL” appears,
and then press ENTER .
To cancel the timer
Repeat the same procedure as above until “OFF”
appears, and then press ENTER .
To change the setting
Start over from step 1.
Tips
• The Play Timer setting remains as long as the setting is not canceled
manually.
• The volume is reduced to minimum during the Rec Timer.
• The Rec Timer is canceled automatically after the Rec Timer has
been activated.

HCD-NEZ31
7
Note: Follow the disassembly procedure in the numerical order given.
3-2. CABINET
•This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
SECTION 3
DISASSEMBLY
3-2. CABINET
(Page 7)
3-3. CABINET (TOP) SECTION
(Page 8)
3-5. FRONT PANEL SECTION
(Page 9)
3-6. MECHANICAL DECK (CMAL5Z235A)
(Page 9)
3-4. BASE UNIT (BU-K8BD83S-WOD)
(Page 8)
3-7. MAIN BOARD
(Page 10)
3-8. TUNER (FM/AM)
(Page 10)
SET
2 two screws
(BVTP3 × 10)
2 two screws
(BVTP3 × 8)
1 two screws
(BVTP3 × 10
)
3 cabinet

HCD-NEZ31
8
3-3. CABINET (TOP) SECTION
3-4. BASE UNIT (BU-K8BD83S-WOD)
1 screw
(BVTP2.6)
1 screw
(BVTP2.6)
5 connector
(S820)
4 wire (flat type) (23 core
)
(CN317)
6 cabinet (top) section
2 claw
2 claw
3
2 four screws
(PWH2.6
× 10)
1 flexible flat cable (23 core)
(CN102)
6 CD cover
7 base unit
(BU-K8BD83S-WOD)
3
cabinet (top) section
(bottom view)
4 two vibration proof rubbers (red
)
5 vibration proof rubber
(green)
5 vibration proof rubber
(green)

HCD-NEZ31
9
3-5. FRONT PANEL SECTION
3-6. MECHANICAL DECK (CMAL5Z235A)
7 screw
(BVTT3
× 6)
1 flexible flat cable (13 core) (FFC501)
(CN500)
3 flexible flat cable (17 core) (FFC805)
(CN321)
4 flexible flat cable (9 core) (FFC803)
(CN900)
5 connector
(CN301)
9 front panel section
2 flexible flat cable (11 core) (FFC804
)
(CN320)
6 two screws
(BVTP3
× 8)
8 terminal lead wire
(WIRE300)
2 three screws
(BVTP2.6)
4 harness
2 screw
(BVTP2.6)
3 terminal lead wire
(WIRE200)
5 mechanical deck
(
CMAL5Z235A )
1 flexible flat cable (6 core
)
(FFC801)

HCD-NEZ31
10
3-7. MAIN BOARD
3-8. TUNER (FM/AM)
1 two connectors
(CN902, CN903)
4 wire (flat type) (9 core)
(CN319)
2 screw (BVTT3 × 8)
9 heat sink
5 screw
(BVTP3
× 8)
6 screw
(BVTP3
× 12
)
7 IC bracket
8 screw
(BVTP3
× 8)
0 Remove two solders.
3
qs MAIN board
qa SHIELD board
2 screw
(BVTT3
× 6)
2 three screws
(BVTT3
× 6)
5 two screws
(BVTP3
× 8)
1 screw
(BVTP3
× 8)
6
4 AC board, DC board section
3 power cord connecto
r
(CN901)
8 tuner
(FM/AM)
7 wire (flat type) (9 core)

11
HCD-NEZ31
CD ERROR HISTORY
When this mode is entered, optical pick-up error code is displayed
with the 8-character format on the fluorescent indicator tube.
Procedure:
1. Set the FUNCTION to CD.
2. While pressing the [DSGX] button, press the CD ubutton
and turn the [VOLUME] knob in the counter-clock wise.
3. CD error history is displayed on the liquid crystal display.
The first digit from the left indicates:
The first digit from the left indicates which mode the error history
is. In the optical pick-up error code mode, “D” is displayed on the
liquid crystal display.
The second digit from the left indicates:
(Error history No. display)
The second digit from the left indicates which order the error history
is. “1” indicates the latest error history, and each time the number
increases by one, the error history goes back to one-previous error.
The third and 4th digit from the left indicates:
(Error status display)
The third and 4th digit from the left indicates which error status is
indicated.
Display Status
01 Not focused (TOC read without a disc)
02 GFS NG (TOC read with a disc chucked)
03 Start operation time-over
04 Defocused continuously (Defocused during TOC reading)
05 Q code not entered for specified time
06 Tracking not turned ON
07 Blank disc (Blank disc TOC read)
The 5th and 6th digit from the left indicates:
(Error step display)
The 5th and 6th digit from the left indicates which processing when
a trouble occurred
Display Contents
01 Power OFF in progress
02 Power ON in progress
03 Initialize in progress
04 Oscillation stopping
05 From oscillation stop, oscillation starting
06 Stopping
07 Stop operation is under way
08 Start operation in progress
09 TOC read in progress
0A Search operation is under way
0B Playback operation is under way
0C Pause operation is under way
0D Playback manual search operation is under way
0E Pause manual search operation is under way
The 7th and 8th digit from the left indicates:
The 7th and 8th digit from the left indicates which operation in
progress when a trouble occurred. (Step of each processing of the
5th and 6th digits is indicated)
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 the I/1button to turn the power on.
2. While pressing the xbutton, press the I/1button and turn
the [VOLUME] knob in the counter-clock wise.
3. The message “RESET” is displayed and the set is reset.
PANEL TEST
All segments of liquid crystal display are tested, and the version
and released date of the micro computer are displayed.
Procedure:
1. Press the I/1button to turn the power on.
2. While pressing the [DSGX] button, press the lmbutton
and turn the [VOLUME] knob in the counter-clock wise.
Then all segments of liquid crystal display are turned on.
3. Press the [DSGX] button, the version and released date of the
micro computer are displayed.
example of display:
4. Press the [TUNER/BAND] button, the model name and
distination are displayed.
example of display:
5. Press the [PLAY MODE/TUNING MODE] button, “KEY 0 0” is
displayed on the liquid crystal display, and key test mode in.
Each time a key is pressed, the numerical value corresponding
to each key is displayed on the liquid crystal display.
6. To exit from this mode, perform the “COLD RESET”.
TUNER STEP CHANGE-OVER
Either the 9 kHz step or 10 kHz step can be selected for the AM
channel step.
Procedure:
1. Set the FUNCTION to AM, and press the I/1button to turn
the power off.
2. While depressing the [TUNER/BAND] button, press the I/1button.
3. The message “9K STEP” or “10K STEP” is displayed on the
liquid crystal display, and thus the channel step is changed
over.
SECTION 4
TEST MODE
1104 V104
Version of micro computer
(In this case, version 104)
released date of micro computer
(In this case, released of November 4)
6NE NA
distination
(In this case, North American model)
model name
(In this case, HCD-NEZXX)

12
HCD-NEZ31
CD POWER MANEGE
This mode is for switch the CD power supply on/off. Even if this
state pulls out AC plug, it is held.
Procedure:
1. Press the I/1button to turn the power on.
2. Set the FUNCTION to CD.
3. Press the I/1button again to turn the power off (standby).
4. While pressing the CD ubutton, press the I/1button.
5. If turns power on and display “CD POWER”, then display
“ON” or “OFF”.
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab :
record/playback head pinch roller
erase head rubber belts
capstan idlers
2. Demagnetize the record/playback head with a head
demagnetizer. (Do not bring the head magnetizer close to the
erase head.)
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, appiy suitable locking compound to
the parts adjusted.
5. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
TORQUE MEASUREMENT
Mode Torque Meter Meter Reading
2.95 – 6.86 mN⋅m
FWD CQ-102C (30 – 70 g⋅cm)
(0.42 – 0.97 oz⋅inch)
FWD 0.15 – 5.39 mN⋅m
Back Tension CQ-102C (1.5 – 5.5 g⋅cm)
(0.021 – 0.076 oz⋅inch)
more than 5.89 mN⋅m
FF CQ-201B (more than 60 g⋅cm)
(more than 0.83 oz⋅inch)
more than 5.89 mN⋅m
REW CQ-201B (more than 60 g⋅cm)
(more than 0.83 oz⋅inch)
TAPE TENSION MEASUREMENT
Mode Tension Meter Meter Reading
FWD CQ-403A more than 100 g
(more than 3.53 oz)
SECTION 5
MECHANICAL ADJUSTMENTS

13
HCD-NEZ31
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: Record/Playback/Erase Head
1. Demagnetize the record/playback head with a head
demagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
•TestTape
Tape Signal Used for
P-4-A063 6.3 kHz, -10 dB Azimuth Adjustment
RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT
Note: Remove the cassette lid assy before this adjustment.
Procedure:
1. Mode: Playback
0 dB=0.775 VDECK SECTION
set
HEAD PHONE board
PHONES jack
(J500)
+
–
level mete
r
test tape
P-4-A063
(6.3 kHz, –10 dB)
set
test tape
P-4-A063
(6.3 kHz, –10 dB) oscilloscope
VH
waveform of oscilloscope
in phase 45 ° 90 ° 135 ° 180 °
good wrong
HEAD PHONE board
PHONES jack
(J500)
Screw
position
L-CH
peak
within
1dB
Output
level
L-CH
peak R-CH
peak
within
1dB
Screw
position
R-CH
peak
SECTION 6
ELECTRICAL ADJUSTMENTS

14
HCD-NEZ31
CD SECTION
Note:
1. CD Block is basically constructed to operate without adjustment.
2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10 MΩimpedance.
4. Clean the object lens by an applicator with neutral detergent when the
signal level is low than specified value with the following checks.
5. Check the focus bias check when optical pick-up block is replaced.
FOCUS BIAS CHECK
Procedure :
1. Connect oscilloscope to TP (RFACI) and TP (VC) on the CD
board.
2. Press the I/1button to turn the power ON.
3. Set disc (YEDS-18) on the tray and press the CDubutton
to playback.
4. Confirm that oscilloscope waveform is as shown in the figure
below. (eye pattern)
A good eye pattern means that the diamond shape (◊) in the
center of the waveform can be clearly distinguished.
Checking Location:
+
–
CD board
TP (RFACI)
TP (VC)
oscilloscop
e
(DC range)
VOLT/DIV: 200 m
V
TIME/DIV: 500 ns
level:
0.9
± 0.4 Vp-p
TP
(VC)
TP
(RFACI)
IC201
– CD Board (Conductor Side) –

HCD-NEZ31
1515
HCD-NEZ31
SECTION 7
DIAGRAMS
7-1. BLOCK DIAGRAM – CD SERVO Section –
OPTICAL
PICK-UP BLOCK
(KSM-213CDP)
CH2OUTF CH2FIN
FOCUS/TRACKING COIL DRIVER,
SLED/SPINDLE MOTOR DRIVER
IC402
12 6
CH2OUTR
11
CH1OUTR
13
CH1OUTF
14
CH3OUTF17
CH3OUTR18
SL–
SL+
TRK–
TRK+
FCS–
FCS+
2-AXIS
DEVICE
PD
LD
B
A
D
C
F
E
M402
(SLED) M
CH4OUTF16
CH4OUTR15
CH2RIN 7
CH1RIN 5
CH1FIN 4
CH3FIN 23
CH3RIN 22
OPIN+ 3
CH4IN 24
OPOUT 27
FFDR
45
PD
67
F
51
E
50
D
60
C
59
B
58
A
57
LD
66
FRDR
46
TRDR
44
TFDR
43
SFDR
41
SRDR42
MDP
38
SP–
SP+
M401
(SPINDLE) M
CD DSP
IC201
SYSTEM CONTROLLER
IC801 (1/2)
XTAI 109
XTAO 108
SSTP 39
X201
16.9344MHz
S201
(LIMIT)
D +3.3V
CD
RFACO
AOUT1 112
AOUT2 117
70
RFACI
71
XRST
8
MUTE
20
XTACN 7
SSTB-MP3 85
ACK-MP3 15 I-MP3-ACK
50
A
AUTOMATIC
POWER CONTROL
Q321
O-MP3-SSTB
11
O-CD-XTACN
34
O-CD-XRST
3
O-MP3-SSTB
11
IREQ-MP3 10
REQ-MP3 14
XLAT-MP3 13
CLK2 90 O-MP3-CLK
6
O-MP3-XLAT
10
O-MP3-REQ12
I-MP3-REQ
49
DATA2 12
SCOR 26 I-CD-SCOR43
O-MP3-DATA
5
I-MP3-DATA
7
SENS 20
XLAT 16
CLOK 11
DATA 89 O-CD-DATA
31
O-CD-CLK
30
O-CD-XLAT
8
I-CD-SENS
29
R-CH
• SIGNAL PATH
: CD PLAY
• R-ch is omitted due to same as L-ch.
(Page 16)

HCD-NEZ31
1616
HCD-NEZ31
7-2. BLOCK DIAGRAM – MAIN Section –
AC
DETECT
Q333, 338
R-CH
+
18
INPUT SELECT,
ELECTRICAL VOLUME
IC302
19
28
RECO-L
18
OUT-L
13
CONT
21 CD-L
23 ST-L
2TC-L
19 AUX-L
REC/PB
SWITCH
Q326 – 329,
Q332, 334, 335
R-CH
CD
A
• SIGNAL PATH
: CD PLAY
: TAPE PLAY
: REC
• R-ch is omitted due to same as L-ch.
: TUNER
J321
AUDIO IN
: AUX IN
J500
PHONES
SPEAKER
+
–
–
+R
LJ302
TUNER (FM/AM)
L-OUT
R-OUT
CE CE
R-CH
ST (TUNED) TUNED
DI DO
DO DI
CLK CLK
CE
TUNED
DO
DI
CLK
BIAS OSC
T301
REC BIAS
SWITCH
Q347, 348
M +10V
BIAS OSC
Q344
ERASE
HRPE301
(REC/PB/ERASE)
TAPE MECHANISM
DECK BLOCK
L-CH
R-CH R-CH
DC
DETECT
Q342, 343
DC
DETECT
Q318 – 320
+
POWER
AMP
IC501
33
I-TU-DO
56
O-TU-CLK
55
O-TU-CE
24
I-TU-SD (TUNED)
57
O-TU-DI
O-TC-REC/PLAY
O-TC-BIAS
36
I-P-MONI
4
O-FUNCTION
IC-DATA
2
STK-ON
CAPSTAN/REEL
MOTOR DRIVE
Q804, 805
PLUNGER
DRIVE
Q802, 803
MM
(CAPSTAN/REEL)
(DECK-A)
SOL
10V
MOTOR
10V
PACK
REC
END SW I-TC-END SW
38
21
I-TC-REC/PLAY SW
22 O-TC-SOL
23 O-TC-MOTOR
I-RMC (SIRCS)
9
SYSTEM CONTROLLER
IC801 (2/2)
D307
D320
(AC IN)
SUB POWER
TRANSFORMER
T901
MAIN POWER
TRANSFORMER
T902
SYS +3.3V
RECT
D911 – 914
D809
D303, 304
D922, 923
D920
AMP B+
TO
POWER AMP
AMP B–
+3.3V
REGULATOR
IC901
+9V
REGULATOR
IC303
+10V
REGULATOR
IC900
D +3.3V
+4V
REGULATOR
IC903
RECT
D916, 917
RECT
D918, 919
RECT
D907 – 910
AM
ANTENNA
FM ANT
AM ANT
ANT GND
ANT GND
FM 75Ω
COAXIAL
VOLTAGE
DETECT
IC803
MAIN POWER
RELAY DRIVE
Q315
D +3.3V
A +9V
M +10V
M +7V
46O-POWER
42I-AC-CUT
54RESET
REMOTE CONTROL
RECEIVER
IC802
LED DRIVE
Q808
D804, 805
(LCD BACK LIGHT)
O-LED-STBY
17
BACK LIGHT
25
D806
X801
32.768kHz
14 13
X1A
X0A
93 92
X802
4.19MHz
XO
XI
LCD801
LIQUID
CRYSTAL
DISPLAY
48 I-RE-VOL
28 I-SW_CD-LID
ROTARY
ENCODER
RV801
VOLUME
STANDBY
S801 - 813
(FRONT PANEL KEYS)
S820
(CD LID OPEN/CLOSE DETECT)
I-KEY0/WAKE-UP,
I-KEY_1
41, 37
COM0 – COM1
59 – 62
SEG0 – SEG32
63, 64, 67 – 89, 94 – 100, 1
RESET
SWITCH
Q801
AC DETECT
Q807
RY901
CD +1.8V
+1.8V
REGULATOR
IC203
(Page 15)

HCD-NEZ31
1717
HCD-NEZ31
•Circuit Boards Location
HEAD PHONE board
PANEL board
CD board
SHIELD boar
d
MAIN board
TUNER (FM/AM)
DC board
CONNECT board AC board
•Note for PrintedWiring Boards and Schematic Diagrams
•Indication of transistor
C
BThese are omitted. E
Q
Note on Schematic Diagram:
•All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
•All resistors are in Ωand 1/4W or less unless otherwise
specified.
•f: internal component.
•2: nonflammable resistor.
•5: fusible resistor.
•C: panel designation.
•A: B+ Line.
•B: B– Line.
•Voltages and waveforms are dc with respect to ground
under no-signal conditions.
– CD Board –
no mark : CD PLAY
– Other Section –
no mark : TUNER
():CD PLAY
〈〈 〉〉 : TAPE PLAY
{ }:REC
•Voltagesare taken withaVOM(Inputimpedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
•Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
•Circled numbers refer to waveforms.
•Signal path.
F: TUNER
J: CD PLAY
E: TAPE PLAY
j: REC
f: AUX IN
Note on Printed Wiring Board:
•X: parts extracted from the component side.
•Y: parts extracted from the conductor side.
•f: internal component.
•: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Partsonthepattern facesideseen from
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.
B
These are omitted.
CE
Q
B
These are omitted.
CE
Q
Note: The components identified by mark 0or dotted line
with mark 0are critical for safety.
Replace only with part number specified.

HCD-NEZ31
1818
HCD-NEZ31
7-3. PRINTED WIRING BOARD – CD Board –
R256
C257
R260
C206
C205
C322
R323
R322
R321
R324
C223
C321
C268
C267
R271
R203
C226
R201
C227
C110
C108
C102
C203
C204
C101
C274
C202
R207
C215
R202
C201
R423
R421
C424
C276
C210
Q321
C207
C266
C275
C323
C277
C406
R401
C401
C219
R276
C271
C272
C104
C105
C107
C109
C232
C220
X201
IC203
C403
R257
C258
C260
C261
R258
C304
C208
R101
R265
R266
R267
C264
C265
R278
C111
C214
R270
C221
C292
C291
R292
R291
IC201
C217
C218
C224
R451
R102
R103
R104
R105
R107
R108
R109
R110
R111
C451
IC402
C256
C251
C252
C254
C253
R254
R255
R252
R253
CN301
C213
C222
C405
R113
C404
R452
C112
R275
R277
C103
R112
C301
C303
C273
R268
C113
CN102
C230
R250
R280
M401
M402
S201
E1-868-067-
12
(12)
CD BOARD (COMPONENT SIDE)
1
3
5
4
1-868-067-
12
(12)
CD BOARD
(CONDUCTOR SIDE)
M
M
1
17 14
28 22
8
21 15
30
90
91
120
60
31
61
(SPINDLE)
(LIMIT)
(SLED)
A
MAIN
BOARD
CN317
TP
(RFACI)
TP
(VC)
OPTICAL PICK-UP BLOCK
(KSM-213CDP)
A
B
C
D
E
F
1 2 3 4 567 8 9 10
: Uses unleaded solder.
(Page
20)
•See page 17 for Circuit Boards Location.

HCD-NEZ31
1919
HCD-NEZ31
7-4. SCHEMATIC DIAGRAM – CD Board – •See page 23 for Waveforms. •See page 23 for IC Block Diagrams. •See page 29 for IC Pin Function Description.
C208
C205
R324
R101
R292
C110
R451
R102
R103
R104
R105
R107
R108
R109
R110
R111
R255
R253
C406
C301
R254
R252
R250
R268
R322
R321
C264
CN301
C222
C213
R291
C201
C219
R112
R113
C203
C108
C102
C101
C103
C105
C111
C104
C109
C107
C113
C112
R275
R277
R276 C271
C221
C273
C261
C260
R265
R266
R267
R258
C258
R260
C256
C207
C254
C253
C252
C251
C232
C206
C224
R278
C272
C204
C218
C291
C292
C217
C202
R401
C303
C322
C321
R323
R452
R421
C404
R207 C226
C265
C210
R256
C257
C323
Q321
C424
R423
C405
M402
M401
IC402
S201
TP
C230
TP
C220
C451
TP2
TP1
TP4
TP3
C274
R257
C304
IC201
R280
C401
R202
C268 C215
C276
C277
R201
CN102
C266C267
R203
C275
C214
X201
R270
R271
C223
IC203
C227
0.1
0.1
100k
100
100
220p
22k
100
100
100
100
100
100
100
100
100
1k
1k
0.1
0.1
10k
10k
1M
10k
2.2
2.2
1000p
16P
0.1
0.1
100
100
10V
0.1
100
100
100
10V
220p
22p
22p
22p
22p
220p
220p
220p
220p
22p
22p
100
100
47k 0.1
0.1
470p
0.01
0.47
4.7k
1k
4.7k
220k
220p
0
0.1
100 10V
4700p
470p
4700p
470p
0.1
0.1
0.1
100
0.1
0.1
0.1
470p
470p
0.1
0.1
0
10
1
1000p
0
10k
0
0.1
01
0.1
0.1
22k
0.1
100
10V
2SA2119K
0.1
10k
0.1
BA5947FM
100p
0.1
0.047
0.1
100k
1
CXD3014A-201R
0
220
10V
0
10p 0.1
1
1
0
23P
10p5p
5p
0.1
16.9344MHz
1k
1M
0.1
TK63118SCL-G
1
FRDR
FFDR
TRDR
TFDR
FRDR
FFDR
TRDR
TFDR
SP-
SP+
SL-
SL+
SP+
SP-
SL+
SL-
OPIN-
OPIN+
CH1FIN
CH1RIN
CH2FIN
CH2RIN
GND
CNF4
POWVCC
CH2OUTR
CH2OUTF
CH1OUTR
CH1PUTF
CH4OUTR
CH4OUTF
CH3OUTF
CH3OUTR
POWVCC
MUTE
GND
CH3RIN
CH3FIN
CH4IN
CH4CAPA
OPOUT
PREVCC
VREF GAIN-SW
MIRR
DFCT
FOK
VSS
LOCK
MDP
SSTP
IOVSS1
SFDR
SRDR
TFDR
TRDR
FFDR
FRDR
IOVDD1
AVDD0
AVSS0
E
F
TEI
TEO
FEI
FEO
VC
A
B
C
D
AVDD4
RFDCO
PDSENS
AC_SUM
EG_IN
LD
PD
RFC
AVSS4
RFACO
RFACI
AVDD3
BIAS
ASYI
ASYO
VPCO
VCTL
AVSS3
CLTV
FILO
FILI
PCO
BCKI
LRCKI
LRCK
VSS
PCMD
BCK
VDD
IOVDD2
DOUT
TEST
IOVSS2
XVSS
XTAO
XTAI
XVDD
AVDD1
AOUT1
VREFL
AVSS1
AVSS2
VREFR
AOUT2
AVDD2
IOVDD0
IOVSS0
XTACN
XRST
VSS
VDD
SENS
WFCK
XUGF
XPCK
GFS
C2PO
SCOR
VDD
COUT
PCMDI
CLOK
SVSS
SVDD
SVSS
SVDD
VSS
SVDD
VDD
VSS
TEST1
SVSS
SVSS
SVDD
JTAGTCK
JTAGTDI
JTAGTDO
JTAGTMS
TRST
VDD
TES1
PLLVDD
PLLVSS
ACK-MP3
REQ-MP3
IREQ-MP3
SSTB-MP3
XLAT-MP3
XLAT
CLK2
DATA
DATA2
T+
VC
GND
LD
PD
F+
T-
F-
VCC
SCOR
SENS
CLK
XRST
D-OUT
DVDD(3.3V)
AVDD(3.3V)
E
D
A
B
C
F
VR
IREQ-MP3
REQ-MP3
ACK-MP3
XLAT-MP3
XLAT
DATA
DATA-MP3
CLK-MP3
GND
(LIMIT)
AUTOMATIC
POWER
CONTROL
CD DSP
FOCUS/TRACKING
COIL DRIVER,
SLED/SPINDLE
MOTOR DRIVER
OPTICAL
PICK-UP
BLOCK
(SPINDLE)
(SLED)
(VC)
(RFACI)
+1.8V REGULATOR
M-MUTE
D-GND
L-CH
A-GND
R-CH
M-GND
M+7V
XTCN
KSM-213CDP
VIN
STBY
NC
VOUT
(Page
21)

HCD-NEZ31
2020
HCD-NEZ31
LP302
CN318
R391
R392
JW302
JW150
JW143
JW153
JW154
JW146
JW151
JW147
JW145
JW144
JW142
JW203
JW126
JW148
JW124
JW149
JW175
JW303
JW234
JW152
JW135
JW136
JW139
JW140
JW138
JW137
JW141
JW187
JW160
JW115
JW116
JW162
JW201
JW202
JW159
JW186
JW185
JW134
JW170
JW171
JW193
JW194
JW195
JW156
JW155
JW117
JW163
JW157
JW161
JW198
JW200
JW199
JW219
JW164
JW165
JW224
JW233
JW123
JW119
JW209
JW250
JW218
JW207
JW208
JW210
JW114
JW215
JW243
JW130
JW132
JW110
JW258
JW113
JW109
JW108
JW106
JW104
JW103
JW235
JW105
JW236
JW254
JW107
JW255
JW211
JW212
J321
JW229
JW230
JW237
JW232
JW125
JW129
JW252
JW168
JW189
JW122
JW216
JW121
CN314
JW192
JW196
JW197
JW217
JW221
C364
C351
Q344
D303
D304
JW301
R153
CN500
IC501
C133
T301
C363
C358
C312
C304
C353
C356
C314
C235
C135
C207
C233
C365
Q347
L201
J302
C355
C362
CN320
R385
C503
C204
R386
C309
C303
IC303
C238
L101
R253
C506
CN321
C352
C313
C114
CN301
C515
C138
C107
CN319
C104
C213
C113
C214
C354
C302
C305
C530
C529
WIER300
R536
C335
R535
JW220
JR152
CN317
C510
C509
C127
C227
C126
C226R236
FB317
R137
R136
R237
D327
JR500
JR100
JR103
C366
R305
R524
R503
R307
R313
R315
R314
R316
JR215
R130
R229
C221
R340
R339
R149
C527
R230
R247
R248
R249
C360
JR236
C331
R319
R317
D321
D323
R387
R312
R311
R512
C120
Q332
R521
C220
R518
R517
R304
R245
R233
R234
R145
R134
R133
R335
R110
R139
R388
R389
R129
R224
R243
R143
R124
R310
Q320
FB305
R131
R128
R384
R132
R362
R383
R239
R367
FB306
C222
R366
R147
R148
R368
R369
R390
C321
C306
C121
C330
C322
R370
C325
R376
C326
C327
C328
C525
Q328
C118
R337
R371
R333
R377
C505
R232
R231
R228
C140
C218
C239
R537
C501
C528
R513
R505
R523
R336
C219
R332
R210
D324
D307
R138
C357
R100
R378
C526
JR115
D320
C139
C504R506
R502
C502
R501
R504
C524
R508
R509
C523
R135
D319
R338
R334
Q348
R309
C310
C311
C315
C316
C317
C318
C319
FB304
R104
C208
C108
Q334 Q335
Q329
R204
IC302
C240
R111
R211
R112
R212
R114
R214
C507
C211
C359
C301
R379
C206
C106
R107R207
R205
R206
R106
C102
C202
R102
R202
R203
R103
R105
C203
C103
R303
R514
R200
R380
R538
R235
C217
C117
C216
Q319
C116
R125
C111
R225
JR136
R238
R109
R209
R302
R306
R308
R126
R301
Q342
Q343
R358
R226
D325
R108
R208
R101
R201
C201
C101
Q327
Q326
R216
R116
R218
R381
R118
R220
R120
R382
R222
R217
R117
R219
R119
R221
D301
C122
C119
R121
R122
R223
R123
Q318
R539
R540
C345
C367
JW241
JW238
JW239
JW231
JW240
JW247
JW245
JW244
J500
R530
R519
R525
R526
R528
R527
R520
R532
R534
R533
R531
R529
R541
R542
R543
R544
R545
R546
R547
R548
WIRE
200
C521
C520
MAIN BOARD
1-869-180-
(14)
(14)
EEEE
E
E
71
E
7
A/K
AK
A/K
AK
A/K
A
K
A/K
A
K
1
1
28
9
1
19
2
18
E
SG
D
E
E
E
E
1
2
23
22
14
A/K
AK
1
2
17
16
AUDIO IN
R
L
SPEAKER
+
+
–
–
B
DC BOARD
CN903
A
CD BOARD
CN102
D
PANEL
BOARD
C
DC BOARD
CN902
ERASEL-CH R-CH
HRPE301
(REC/PB/ERASE)
F
PANEL
BOARD
(CHASSIS)
A
B
C
D
E
F
G
H
I
J
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
K
1
2
10 11
13
C338
TUNER
(FM/AM)
FM 75Ω
COAXIAL
ANTENNA
AM
FB318
C332
C511
C513
R515
R516
C514
C512
JW251
FFC501
PHONES
1-869-177- (CHASSIS)
EPT500
14
(14)
(CHASSIS)
SHIELD BOARD
1-869-182-
14
(14)
HEAD PHONE BOARD
1
13
7-5. PRINTED WIRING BOARDS – MAIN Section – : Uses unleaded solder.
(Page 24) (Page 18) (Page 26)
(Page 24)
(Page 26)
•Semiconductor Location
IC302 C-6
IC303 H-7
IC501 H-12
Q318 F-10
Q319 F-10
Q320 F-10
Q326 C-4
Q327 C-5
Q328 D-4
Q329 D-4
Ref. No. LocationRef. No. Location
D301 F-10
D303 D-9
D304 D-9
D307 E-10
D319 D-11
D320 E-11
D321 F-9
D323 H-8
D324 H-8
D325 E-10
D327 C-13
Ref. No. Location
Q332 D-4
Q334 D-4
Q335 D-5
Q342 E-10
Q343 E-10
Q344 A-4
Q347 B-2
Q348 B-3
•See page 17 for Circuit Boards Location.