Sony SS-CNE3 User manual

SERVICE MANUAL
•Abbreviation
AR : Argentina model
AUS : Australian model
CND : Canadian model
E51 : Chilean and Peruvian models
EA : Saudi Arabia model
9-877-692-01 Sony Corporation
2004C05-1 Home Audio Company
© 2004.03 Published by Sony Engineering Corporation
Ver 1.0 2004.03
MICRO Hi-Fi COMPONENT SYSTEM
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
•CMT-NE3 is composed of the following models.
As service manuals are issued for each component model, please refer to them.
CMT-NE3
1-478-519-11 COMMANDER, STANDARD (RM-SC1)
1-754-102-31 ANTENNA, ROOP (LW.MW)
1-754-243-11 ANTENNA (FM)
4-253-397-11 MANUAL, INSTRUCTION (ENGLISH)
(US, CND, AEP, UK, E, TW, AR, E51, EA, SP, AUS)
4-253-397-21 MANUAL, INSTRUCTION (FRENCH) (CND, EA)
4-253-397-31 MANUAL, INSTRUCTION (FRENCH, SPANISH)
(AEP, E, AR, MX, E51, SP)
4-253-397-41 MANUAL, INSTRUCTION
(GERMAN, DUTCH, ITALIAN) (AEP)
4-253-397-51 MANUAL, INSTRUCTION (SWEDISH, POLISH) (AEP)
4-253-397-61 MANUAL, INSTRUCTION
(TRADITIONAL CHINESE) (SP, TW)
4-253-397-71 MANUAL, INSTRUCTION (KOREAN) (KR)
4-253-397-81 MANUAL, INSTRUCTION (ARABIC) (EA)
4-253-398-11 MANUAL, INSTRUCTION (DANISH, FINNISH) (AEP)
4-253-398-21 MANUAL, INSTRUCTION (PORTUGUESE) (AEP)
4-253-398-31 MANUAL, INSTRUCTION (RUSSIAN) (AEP)
4-253-398-41 MANUAL, INSTRUCTION (GREEK) (AEP)
4-253-398-51 MANUAL, INSTRUCTION (CZECH, HUNGARIAN) (AEP)
4-253-398-61 MANUAL, INSTRUCTION (TURKISH) (AEP)
4-253-398-71 MANUAL, INSTRUCTION (SLOVAKIAN) (AEP)
ACCESSORIES
Part No. Description Remark
SPECIFICATIONS
COMPONENT MODEL NAME
CMT-NE3
COMPACT DISC DECK RECEIVER HCD-NE3
SPEAKER SYSTEM SS-CNE3
Power requirements
North American model: 120 V AC, 60 Hz
Mexican model: 120 V AC, 60 Hz
European model: 230 V AC, 50/60 Hz
Australian model: 230 −240 V AC, 50/60 Hz
Korean model: 220 V AC, 60 Hz
Taiwanese model: 120 V AC, 50/60 Hz
Saudi Arabian model: 120 −127/220 V AC, 50/
60 Hz
Other models: 110−120Vor 220 −240 V
AC, 50/60 Hz
Adjustable with voltage
selector
Power consumption 45 W
Dimensions (w/h/d) Approx. 164 ×230.5 × 263
mm incl. projecting parts
and controls
Mass Approx. 3.7 kg
Supplied accessories Remote Commander (1)
R6 (size AA) batteries (2)
AM loop antenna (1)
FM lead antenna (1)
Design and specifications are subject to change
without notice.
KR : Korean model
MX : Mexican model
SP : Singapore model
TW : Taiwan model

2
CMT-NE3
REVISION HISTORY
Clicking the version allows you to jump to the revised page.
Also, clicking the version at the upper right on the revised page allows you to jump to the next revised
page.
Ver. Date Description of Revision
1.0 2004.03 New

SERVICE MANUAL
9-877-694-02 Sony Corporation
2005B05-1 Personal Audio Group
© 2005.02 Published by Sony Engineering Corporation
Ver. 1.1 2005.02
SPEAKER SYSTEM
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
SS-CNE3
SPECIFICATIONS
•SS-CNE3 is the speaker system in CMT-NE3.
Design and specifications are subject to change without notice.
Speaker system Full Range Speaker
System
Speaker units
Woofer: 10 cm dia., cone type
Nominal impedance 6 ohms
Dimensions (w/h/d) Approx. 146 × 230.5 × 135
mm
Mass Approx. 1.5 kg net per
speaker
•Abbreviation
AR : Argentina model
AUS : Australian model
CND : Canadian model
E51 : Chilean and Peruvian models
EA : Saudi Arabia model
A-4714-169-A UNIT ASSY, MAIN (US, CND, AR, EA, KR, MX, TW, AUS)
A-4714-171-A UNIT ASSY, MAIN (AEP, UK, E, SP, E51)
PARTS LIST
Part No. Description Remark
KR : Korean model
MX : Mexican model
SP : Singapore model
TW : Taiwan model

SS-CNE3
REVISION HISTORY
Clicking the version allows you to jump to the revised page.
Also, clicking the version at the upper right on the revised page allows you to jump to the next revised
page.
Ver. Date Description of Revision
1.0 2004.03 New
1.1 2005.02 Correction of Part No. for MAIN UNITASSY (AEP, UK, E, Singapore,
Chilean and Peruvian) (SPM-05022)

SERVICE MANUAL
COMPACT DISC DECK RECEIVER
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
HCD-NE3
Ver. 1.1 2005.07
9-877-693-02 Sony Corporation
2005G05-1 Personal Audio Group
© 2005.07 Published by Sony Engineering Corporation
SPECIFICATIONS
•HCD-NE3 is the amplifier, CD player, tape deck
and tuner section in CMT-NE3.
Model Name Using Similar Mechanism NEW
CD Section Base Unit Name BU-K7BD80B
Optical Pick-up Name KSM-213EDP/C2NP
TAPE Section Model Name Using Similar Mechanism NEW
Tape Transport Mechanism Type CMAL5Z220A
CD player section
Laser Semiconductor laser
(λ=780 nm)
Emission duration:
continuous
Frequency response 20 Hz – 20 kHz
Wavelength 780 – 790 nm
Tape deck section
Recording system 4-track 2-channel, stereo
Frequency response 50 – 13,000 Hz (±3 dB),
using Sony TYPE I
cassettes
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range 87.5 – 108.0 MHz
Antenna FM lead antenna
Antenna terminals 75 ohms unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
US, Canadian, Mexican and Argentina models:
US, Canadian and Mexican models:
530 – 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 – 1,710 kHz
(with the tuning interval
set at 9 kHz)
AEP and UK models: 531 – 1,602 kHz
(with the tuning interval
set at 9 kHz)
Other models: 530 – 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 – 1,602 kHz
(with the tuning interval
set at 9 kHz)
Antenna AM loop antenna, external
antenna terminal
Intermediate frequency 450 kHz
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
(US model)
With 6 ohm loads, both channels driven, from
120-10,000 Hz; rated 13 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion from 250 milliwatts to
rated output.
Main unit
Amplifier section
North American model:
Continuous RMS power output (reference):
15 + 15 W
(6 ohms at 1 kHz, 10%
THD)
European model:
DIN power output (rated): 11 + 11 W (6 ohms at 1
kHz, DIN)
Continuous RMS power output (reference):
15 + 15W (6 ohms at 1
kHz, 10% THD)
Music power output (reference):
25 + 25 W
Other models:
The following measured at AC 230 V or AC 120 V, 50/
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
MD (phono jacks): Sensitivity 450 mV,
impedance 47 kilohms
Outputs
PHONES: Accepts headphones with
an impedance of 8 ohms or
more
SPEAKER: Accepts impedance of 6 to
16 ohms.
General
Power requirements
120 V AC, 60 Hz
AEP and UK models: 230 V AC, 50/60 Hz
Australian model: 230 – 240 V AC, 50/60 Hz
Argentina and Korean models:
220 V AC, 60 Hz
Taiwanese model: 120 V AC, 50/60 Hz
Saudi Arabian model: 120 – 127/220 V AC, 50/
60 Hz
Other models: 110–120V or 220 – 240V
AC, 50/60 Hz
Adjustable with voltage
selector
Power consumption 45 W
Dimensions (w/h/d) Approx. 164 ×230.5 ×263
mm incl. projecting parts
and controls
Mass Approx. 3.7 kg
Supplied accessories Remote Commander (1)
R6 (size AA) batteries (2)
AM loop antenna (1)
FM lead antenna (1)
Design and specifications are subject to change
without notice.

HCD-NE3
2
Notes on chip component replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
•Keep the temperature of the soldering iron around 270 ˚C dur-
ing 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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
The following caution label is located inside the unit.
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indica-
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-
amples of a passive VOM that is suitable. Nearly all battery
operated digital multimeters that have a 2VAC range are suit-
able. (See Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 k Ω 0.15 µ FAC
voltmete
r
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
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 oc-
cur 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.
CLASS 1 LASER PRODUCT
LUOKAN 1 LASER LAITE
KLASS 1 LASER APPARAT
This appliance is classified
as a CLASS 1 LASER
product.
This label is located on the
rear exterior.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR 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 PUB-
LISHED BY SONY.

HCD-NE3
3
TABLE OF CONTENTS
1. SERVICING NOTES ................................................ 4
2. GENERAL
Location of Controls ....................................................... 6
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 8
3-2. Rear Cabinet .................................................................... 8
3-3. Top Panel Assy ................................................................ 9
3-4. Front Panel Assy ............................................................. 9
3-5. Base Unit (BU-K7BD80B) ............................................. 10
3-6. Mechanical Deck............................................................. 10
3-7. MAIN Board ................................................................... 11
3-8. AMP Board ..................................................................... 11
4. TEST MODE.............................................................. 12
5. ELECTRICAL CHECK .......................................... 14
6. DIAGRAMS
6-1. Block Diagram – CD SERVO Section – ....................... 15
6-2. Block Diagram – MAIN Section – ................................ 16
6-3. Note for Printed Wiring Boards
and Schematic Diagrams ................................................ 17
6-4. Printed Wiring Board – BD Board – ............................. 18
6-5. Schematic Diagram – BD Board – ................................ 19
6-6. Printed Wiring Boards – MAIN Section – .................... 20
6-7. Schematic Diagram – MAIN Section –......................... 21
6-8. Printed Wiring Boards – AMP Section –....................... 22
6-9. Schematic Diagram – AMP Section – ........................... 23
6-10. Printed Wiring Boards – PANEL Section – .................. 24
6-11. Schematic Diagram – PANEL Section –....................... 25
6-12. Printed Wiring Board – POWER Board – ..................... 26
6-13. Schematic Diagram – POWER Board –........................ 27
7. EXPLODED VIEWS
7-1. Panel Section ................................................................... 32
7-2. Front Panel Assy-1 .......................................................... 33
7-3. Front Panel Assy-2 .......................................................... 34
7-4. Top Panel Assy ................................................................ 35
8. ELECTRICAL PARTS LIST ............................... 36

4
HCD-NE3 SECTION 1
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electro-
static 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 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 emis-
sion, observe from more than 30 cm away from the objective lens.
•MODEL IDENTIFICATION
– Rear Cabinet –
MODEL Power Voltage Incdication
US, Canadian, Mexican and AC: 120 V 60 Hz 45 W
models
AEP and UK models AC: 230 V -50/60 Hz 45 W
Australian model AC: 230 – 240 -50/60 Hz 45 W
Argentina and Korean models AC: 220 V -60 Hz 45 W
Taiwan model AC: 120 V 50/60 Hz 45 W
Saudi Arabia model AC: 120 – 127/220 V
50/60 Hz 45 W
Other models AC: 110 – 120/220 – 240 V
50/60 Hz 45 W
Power Voltage Indication
NOTE ON LEADINGTHE WIRE (FLATTYPE)
•In order to separate wire (flat type) from no shield portion of TC wire, stick filament tapes, as shown in a figure.
wire (flat type)
filament tape
TC wire (no shield portion)
main board

5
HCD-NE3
SERVICE POSITION
– BD board –
–TCM block –
– AMP board –
TCM block
AMP board
BD board

6
HCD-NE3 SECTION 2
GENERAL This section is extracted from
instruction manual.
•LOCATION OF CONTROLS
Main unit
BASS/TREBLE 8
Cassette compartment qf
CD SYNCHRO qg
DISPLAY 0
Displaywindow 5
DSGX 9
PHONES jack qk
PLAY MODE qj
Remote sensor 2
TUNER/BAND qs
TUNING +/−4
TUNING MODE qj
VOLUME qa
?/1 (power) 1
.m/M> (skip back/
skip forward,rewind/fast
forward) 4
x(stop) 3
zRECPAUSE/START qh
CD/NX(play/pause) ql
TAPE/N(play) w;
ZPUSHOPEN/CLOSE (CD
open/close) 6
ZPUSHOPEN (tape open/close)
qd
ALPHABETICAL ORDER
A – O P – Z
BUTTON DESCRIPTIONS
12345 6
8
9
0
qs
qa
qd
qf
qgqh
qj
qk
w;
ql

7
HCD-NE3
Use buttons on the remote for the operation.
1 Press ?/1 to turn on the system.
2Press CLOCK/TIMER SET.
3Press ./> repeatedly to set the
hour.
4Press ENTER.
5Press ./> repeatedly to set the
minute.
6Press ENTER.
The clock starts working.
To adjust the clock
1Press CLOCK/TIMER SET.
2Press ./> until “CLOCK” appears,
then press ENTER.
3Do the same procedures as step 3 to 6
above.
Note
The clock is not displayed in Power Saving Mode.
Setting the clock
Remote control
CD qh
CLEAR qd
CLOCK/TIMER SELECT 2
CLOCK/TIMERS ET 3
DISPLAY ql
ENTER 9
EQ qs
FM MODE 4
FUNCTION 6
PLAY MODE qk
REPEAT 4
SLEEP w;
TAPE qg
TUNER/BAND 5
TUNER MEMORY qj
TUNING MODE qk
VOLUME +/−0
?/1 (power) 1
m/M (rewind/fast forward)
7
./> (go back/go forward)
qf
x(stop) 8
X(pause) 8
N(play) 8
+/−(tuning) qf
ALPHABETICAL ORDER
A – O P – Z
BUTTON DESCRIPTIONS
4
5
6
7
8
9
w; 1
qd
qs
ql
qk
qj
qh
qg
qf
0
3
2
CMT-NE3
* Button does not function with this model.
*

HCD-NE3
8
•This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
SECTION 3
DISASSEMBLY
3-2. REAR CABINET
(Page 8)
3-6. MECHANICAL DECK
(Page 10) 3-7. MAIN BOARD (Page 11)
3-4. FRONT PANEL ASSY
(Page 9) 3-5. BASE UNIT (BU-K7BD80B)
(Page 10)
3-3. TOP PANEL ASSY
(Page 9)
SET
3-8. AMP BOARD
(Page 11)
Note: Follow the disassembly procedure in the numerical order given.
3-2. REAR CABINET
2 four screws
(BVTP3 × 8)
7 rear cabinet
5 two screws
(BVTP3 × 10)
6 two screws
(BVTP3 × 10)
1 four screws
(BVTP3 × 8)
3 two screws
(BVTP3
× 10)
4 five screws
(BVTP3
× 10)

HCD-NE3
9
3-4. FRONT PANEL ASSY
1 claw
3
5 connector
(S820)
4 wire (flat type) (17 core)
(CN305)
2 claw
6 top panel assy
1 wire (flat type) (19 core)
(CN302)
qd flont panel assy
2 wire (flat type) (8 core)
(CN303)
q; wire (flat type) (11 core)
6 two screws
(BVTP3
× 10)
9
7
8
5 connector
(CN301)
4 connecto
r
(CN501)
3 connector
(CN309)
qs harness
qa screw (2.6 × 10)
3-3. TOP PANEL ASSY

HCD-NE3
10
2 screw
(BVTT2.6
× 6)
1 three screws
(2.6
× 10)
3 shield (TC
)
4 mechanical deck
1 three screws
(BVTP2.6
× 8)
3 wire (flat type) (17core)
(CN201)
2 CD cover
5 two screws
(2.6
× 10)
4 two screws
(2.6
× 10)
6 base unit
(BU-K7BD80B)
3-5. BASE UNIT (BU-K7BD80B)
3-6. MECHANICAL DECK

HCD-NE3
11
3-7. MAIN BOARD
3-8. AMP BOARD
4 two screws
(BVTP3 × 10)
5 main board
6 tuner (FM/AM)
1 connector (CNB308)
3 connector (CNB307
)
2 connector (CN902)
3 two screws
(BVTP3
× 10)
4 AMP board
1 connector (CNB308)
2 connector (CNB307)

12
HCD-NE3
COLD RESET
*The cold reset clears all data including preset data stored in
the RAM to initial conditions. Execute this mode when re-
turning 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 ver-
sion and released date of the micro computer are displayed.
Procedure:
1. Press the I/1button to turn the power on.
2. While pressing the [DISPLAY] button, press the I/1button
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:
1209 V100
4. Press the [BASS/TREBLE] button, the model name and desti-
nation are displayed.
example of display:
N3 NA
5. To exit from this mode, perform the “COLD RESET”.
CD ERROR CODE DISPLAY MODE
•When this mode is entered, optical pick-up error code is dis-
played with the 8-character format on the liquid crystal display.
Procedure:
1. Press the I/1button to turn the power ON.
2. Press the CD NXbutton to select “CD”.
3. While pressing the [DISPLAY] button, press the [PLAY/MODE/
TUNING MODE] and turn the [VOLUME] knob in the counter-
clockwise.
4. When this mode is activated, CD error code is displayed on
the liquid crystal display.
5. Pressthe TUNING+M>and TUNING–.mbuttons,
error history No. is changed.
The first digit from the left indicates:
The first digit from the left indicates which mode the error history
is. “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 his-
tory is. “0” indicates the latest error history, and each time the
number increases by one, the error history goes back to one-previ-
ous error.
SECTION 4
TEST MODE
Version of micro computer
(In this case, version 100)
released date of micro computer
(In this case, released of December 9)
destination
(In this case, North-American model)
model name
(In this case, HCD-NE3)
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 SHIP in progress
02 Power OFF in progress
03 Power ON in progress
04 Initialize in progress
05 Oscillation stopping
06 From oscillation stop, oscillation starting
07 Stopping
08 Stop operation is under way
09 Start operation in progress
0A TOC read in progress
0B Search operation is under way
0C Playback operation is under way
0D Pause operation is under way
0E Playback manual search operation is under way
0F 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)
5 REPEAT LIMIT CANCEL MODE
•Number of repeat for CD playback is 5 times when the repeat
mode is “REPEAT”. This mode is used to enables CD to repeat
playback for limitless times.
Procedure:
1. Press the I/1button to turn the power ON.
2. Press the CD NXbutton to select “CD”.
3. While pressing the xbutton, press the [PLAY MODE/TUN-
ING MODE] and turn the [VOLUME] knob in the counter-
clockwise.
4. The message “NO LIMIT” is displayed on the liquid crystal
display momentarily, CD repeat 5 limit is cancelled.

13
HCD-NE3
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 TUNING + M>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.

14
HCD-NE3
Note:
1. CD Block is basically constructed to operate without
adjustment.
2. UseYEDS-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 block is replaced.
FOCUS BIAS CHECK
Procedure :
1. Connect the oscilloscope to TP012 (RFACO) andTP013 (VC)
on the BD board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the CD NXbutton.
4. Confirm that the 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.
• RF signal reference waveform (eye pattern)
Checking Location:
SECTION 5
ELECTRICAL CHECK
+
–
BD board
TP012 (RFACO)
TP013 (VC)
oscilloscope
(DC range)
VOLT/DIV: 0.2 V (with the 10: 1 probe in use.)
TIME/DIV: 500 ns
1.1
When observing the eye pattern, set the oscilloscope
for AC range and raise vertical sensitivity.
0.2 Vp-p
– BD BOARD (Conductor Side) –
TP012
(RFACO)
TP013
(VC)

HCD-NE3
1515
SECTION 6
DIAGRAMS
6-1. BLOCK DIAGRAM – CD SERVO Section –
A/D
CONVERTER
CH2OUTF
CH2OUTR
23
24
22
4
5
6
7
17
18
16
15
RFACI
ASYO
ASYI
FILTER
FILO
PCO
CLTV
FILI
DIGITAL PLL
ASYMMETRY
CORRECTOR
EFM
DEMODULATOR
CD DSP
IC101 (1/2)
MDP
DIGITAL
CLV
PROCESSOR
32K
RAM
ERROR
CORRECTOR
INTERNAL BUS
SQCK SQSO
EXCK
AOUT1
C4M
XTSL
XTAO
XTAI
AOUT2 R-CH
D/A
DIGITAL
INTERFACE
D/A
CONVERTER
SELECTOR
CLOCK
GENERATOR
SUBCODE
PROCESSOR
SCOR WFCK XUGF GFS EMPH SENS DATA CLOK XLAT SBSO
CD SENS
CD DATA
CD XLT
TEI
FEI
FOCUS/
TRACKING/SLED
SERVO DSP
FOCUS/TRACKING/SLED
PWM GENERATOR
SFDR
CH3FIN
CH4IN
CH3RIN
CH3OUTF
CH3OUTR
CH1FIN
CH1RIN
CH2FIN
CH2RIN
20
MUTE
SRDR
TFDR
TRDR
FFDR
FRDR
SSTP
COUT
MIRR,
DFCT, FOK
DETECTOR
SERVO AUTO
SEQUENCER
SERVO
INTERFACE
CPU INTERFACE
SCLK
TO CPU INTERFACE
FOK
MIRR
DFCT
2
OPIN+
CH4OUTF
CH4OUTR 27 OPOUT
M101
(SPINDLE)
MOTOR
DRIVE
MOTOR
DRIVE
COIL
DRIVE
CH1OUTF
CH1OUTR
COIL
DRIVE
M
M
M102
(SLED)
MOTOR/COIL DRIVE
IC251
2-AXIS
DEVICE
(TRACKING)
(FOCUS)
CD DSP
IC101 (2/2)
•SIGNAL PATH
: CD PLAY
14
13
11
12
CD SCOR
A
CD
13
11
12
9
10
14
112
101
20 22
3
1
2
7
TO SERVO AUTO
SEQUENCER
39
48 50
XPCK
105
47 49
42
43
6
XRST
93
CD XRST
5
89 90
76
73
110 86
72
81
91 9210810095 98 97 103 104 106 64
6
CD CLK
8 9
LRCK BCK PCMD
59 62 61
LRCKI BCKI PCMDI
58 56 57
7 27
25
26
27
28
23
21
19
18
35
34
E
B
A
D +3.3V
F
DETECTOR
A
B
C
D
RF
SUMMING
AMP
FOCUS
ERROR
AMP
TRACKING
ERROR AMP
RFACO
FEO
TEO
E
F
AUTOMATIC
POWER
CONTROL
Q10
APC LD
AMP
LD
LD
PD
LASER DIODE
OPTICAL PICK-UP
BLOCK
(KSM-213EDP)
PD
I-V AMP
D
C
EQ_
IN 38
33
32 EQ
AC_
SUM RFAC
VCA
X171
16.9344MHz
SYSTEM CONTROLLER
IC801 (1/2)
S101
(LIMIT)
CD XTXCN 3
•R-ch is omitted due to same as L-ch.
XTACN 88
(Page 16)

HCD-NE3
1616
6-2. BLOCK DIAGRAM – MAIN Section –
AC
DETECT
Q333, 338
R-CH
+
95
INPUT SELECT,
ELECTRICAL VOLUME
IC302
94
28
REC-O-L
18
OUT-L
13
CONT
21 CD-L
23 TU-L
2TA-L
19 AUX-L
REC/PB
SWITCH
Q326 – 332
R-CH
CD
A
•SIGNAL PATH
: CD PLAY
: TAPE PLAY
: REC
•R-ch is omitted due to same as L-ch.
: TUNER
J303
R
MD
L
: AUX IN
J301
PHONES
SPEAKER
IMPEDANCE
USE 6 – 16Ω
+
–
–
+R
LJ302
FM/AM TUNER PACK
TU-LCH
TU-RCH
TU-CE CE
R-CH
TUNED TUNED
STEREO STEREO
MUTE TU-MUTING
TU-DI DO
TU-DO DI
TU-CL CLK
CE
TUNED
STEREO
DO
DI
CLK
BIAS OSC
T301
REC BIAS
SWITCH
Q346 – 348
B +10V
BIAS OSC
Q344, 345
ERASE
HRPE301
(REC/PB/ERASE)
TAPE MECHANISM
DECK BLOCK
L-CH
R-CH R-CH
DC
DETECT
Q342, 343
+
POWER
AMP
IC501
30
TU DI
34
TU CLK
35
TU CE
36
TU TUNED
37
TU STEREO
32
TU DO
TU-MUTING
33
TU MUTE
TA REC/PLAY
TA BIAS
18
I POWER MONITOR
28
F DATA
99
AMP MUTE
98
AMP STBY
CAPSTAN/REEL
MOTOR DRIVE
Q804, 805
PLUNGER
DRIVE
Q802, 803
MM
(CAPSTAN/REEL)
(DECK-A)
SOL 9V
MOTOR 9V
PACK
REC
PLAY SW
FWD SW
TA PLAY SW
TA END SW
24
91
92
TA-SW
96 TA SOL
93 TA MOTOR
RMC
29
SYSTEM CONTROLLER
IC801 (2/2)
(EXCEPT E, E51, EA, SP)
(EXCEPT E, E51, EA, SP)
(E, E51, EA, SP)
D307
(AC IN)
SUB POWER
TRANSFORMER
T901
MAIN POWER
TRANSFORMER
T902
SYS +3.2V
SYS +3.1V
RECT
D913, 914
D810
D809
D923, 924D922
D920, 921
AMP B+
TO
POWER AMP
AMP B–
VOLTAGE
SELECTOR
S901
+10V
REGULATOR
IC305
VM +10V
+3.9V
REGULATOR
Q312 – 314
RECT
D916, 917
RECT
D918, 919
RECT
D907 – 910
SYS +3.3V
AM
ANTENNA
FM ANT
AM ANT
ANT GND
ANT GND
FM 75Ω
COAXIAL
VOLTAGE
DETECT
IC803
MAIN POWER
RELAY DRIVE
Q311, 315
+3.3V
REGULATOR
Q339
+3.3V
REGULATOR
Q317
M +7V
D +3.3V
B+ SWITCH
Q319, 320
2CD ON
1PWR ON
23I POWER DOWN
11RESET
REMOTE CONTROL
RECEIVER
IC802
ST/BY
39
LED DRIVE
Q806
D806
(STANDBY)
BACK LIGHT ON
97
LED DRIVE
Q808
D701 – 703
(LCD BACK LIGHT)
X801
32.768kHz
13 12
XT2
XT1
16 15
X802
10MHz
CF2
CF1
FL801
FLUORESCENT
INDICATOR TUBE
SEG1 – 33
LCD COM0 – 3
83 – 86 79 – 56,
53 – 45
22 VOL ENCODER
4 CD OPEN
ROTARY
ENCODER
RV801
VOLUME
S801 – 813
(FRONT PANEL KEYS)
S820
(CD LID OPEN/CLOSE DETECT)
KEY0,
KEY1
25, 26
RESET SWITCH
Q801
RY901
+7V
REGULATOR
IC306
(Page 15)