Sony HCD-NE3 User manual

SERVICE MANUAL
COMPACT DISC DECK RECEIVER
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
HCD-NE3
Ver 1.0 2004.03
9-877-693-01 Sony Corporation
2004C05-1 Home Audio Company
© 2004.03 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: 110–120 V 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) and TP013 (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)

HCD-NE3
1717
6-3. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS •Circuit Boards Location
Note on PrintedWiring 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.)
•Indication of transistor.
C
BThese are omitted. E
Q
B
These are omitted.
CE
Q
Note on Schematic Diagram:
•All capacitors are in µF unless otherwise noted. pF: µµF
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 Sections –
no mark : TUNER
():CD PLAY
〈〈 〉〉 : TAPE PLAY
{} : REC
•Voltagesare takenwith aVOM(Input impedance 10MΩ).
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
•Abbreviation
AR : Argentina model
AUS:Australian model
CND : Canadian model
E51 :Chiliean and Peruvian models
EA :Saudi Arabia model
KR : Korean model
MX : Mexican model
SP : Singapore model
TW :Taiwan model
Caution:
Pattern face side: Partsonthepattern faceside seen 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
Note:
The components identi-
fied by mark 0or dotted
linewith mark0are criti-
cal for safety.
Replace only with part
number specified.
Note:
Lescomposants identifiéspar
une marque 0sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro
spécifié.
TUNER unit
MAIN board
CONTROL board
BD board
POWER board
AMP board
HP board
BACK LIGHT board

HCD-NE3
1818
M102
JW104
JW105
JW106
JW107 JW108
JW109
JW110
JW111
JW112
JW116
JW117
JW118
JW120
JW123
JW124
JW125
JW132
JW133
JW134 JW102
JW126
JW128
JW131
JW119
JW101
JW114
JW115
M101
C151
C183
CN201
C203
X101
C184
C201
C17
CN101
C170
JW113
C116
JW103
JW127
S101
IC251
JR109
JR104
C14
R114
JR108
JR101
R112
C202
R252
C161
R172
C181
C258
C163
C18
C131
R111
IC101
C182
C111
JR102
R10
JR110
R11
C141
C164
R141
JR103
C16
C15
C112
C251
C257
C113
JR106
Q10
C194
R251
C114
C259
C133
JR105
C115
C160
C252
C122
C124
C123
C162
R113
R142
R171
R406
R132
R151
R12
R121
R131
C125
C195
C117
C143
C172
C171
C174
R133
R407
C132
C142
R143
JR107
R13
R181
R182
C185
C186
JR111
R162
C204
R161
R173
C10
C11
R202
C213
R408
R409
R410
R411
C212
C211
C210
R204
R412
R201
E
1
7
8
14
28
22
21
15
112
8584
2829
1
57
56
1-861-620-
12
(LIMIT)
(12)
BD BOARD
TP013
(VC)
12
15 16
OPTICAL
PICK-UP
BLOCK
(KSM-213EDP)
(SPINDLE)
M
(SLED)
M
AMAIN BOARD
CN305
TP012
(RFACO)
6-4. PRINTED WIRING BOARD – BD Board – •See page 17 for Circuit Boards Location. :Uses unleaded solder.
(Page 20)

HCD-NE3
1919
6-5. SCHEMATIC DIAGRAM – BD Board – •See page 28 for IC Block Diagrams. •See page 28 forWaveforms.
The components identified by mark 0or dotted
line with mark 0are critical for safety.
Replaceonly withpart number specified.
Lescomposants identifiés parunemarque0sont
critiques pour lasécurité. Ne les remplacerque
par une pièce portant le numéro spécifié.
C161
C15
TP29
TP31
TP33
TP30
TP34
TP35
TP36
TP37
TP38
TP40
TP39
TP41
TP42
TP43
TP44
R411
R410
R409
R408
R407
R406
C163
C202 C203 C162
C201 C182 C181
C186 C185
C184 C183
R182
R181
C174R173
X101
R172
R171
C172
C171
R161
R412 R162
C194
C213
C211
C212
JR110
C164
JR102
C160
R252C251
C258
R251
JR107
C170
C252
R151
C111C114 R114 R112
C112C113
R111R113
JR106
TP28
TP21
TP015
TP22
TP23
TP24
TP25
TP26
JR108
TP27
TP014
TP17
TP18
TP19
TP20
TP013
C16
R11
C18
C17
R12
C117
C125
C124
TP012
R133 C133
C132
R132
C142
R143
C141R142R141
C151
R202
C143
IC101
JR103
C122
R121
C123
C10C14
CN201
CN101
M102
M101
C195
TP016
JR101
C257
C210
C116
R204
R201
C115
C259
JR104
IC251
JR105
Q10
TP32
JR111
C11
TP46
R13
TP45
R10
JPO004
JPO003
JPO001
S101
JR109
JPO002
R131 C131
0.1
0.1
XTACN
DOUT
LOUT
AGND
ROUT
DGND
DVDD
XRST
DATA
CLK
XLT
SENS
SCOR
MGND(7V)
M+7V
100
100
100
100
100
100
0.1
0.1 220
10V 0.1
220
10V 0.1 0.1
470p 470p
220
10V
220
10V
100
100
0.10
16.9344MHz
1M
470
27p
22p
100
100 47k
0.1
22p
220p
22p
0
0.1
0
0.1
22k6800p
0.1
10k
0
220
16V
0.1
0
3300p470p 15k 15k
470p3300p
1k1k
0LD
AGND
F
PD
F+
T+
T-
F-
0
TOP1
E
D
A
B
C
VC
1
0
1000p
220
10V
100k
0.1
0.1
330p
RFACO
180k 0.01
0.47
10k
1500p
3.3k
0.11k4.7k
220
10V
0
0.1
CXD3058AR
0
0.1
15k
0.1
100.1
17P
16P
0.1
SSTP
0
0.1
0.1
220
10V
0.1
0.1
0
BA5947FM
0
2SB1690K
AVDD
0
10
IOP1
1
IOP2
3.3
0
1M 100p
SFDR
SFDR
SRDR
SRDR
TFDR
TFDR
TRDR
TRDR
FFDR
FFDR
FRDR
FRDR
E
E
D
D
A
A
B
B
C
C
F
F
PD
PD
F+
F+
T+
T+
T-
T-
F-
F-
VC
VCC
PD
LD
T-
F-
T+
F+
LMUT
XTSL
IOVSS0
XTACN
SQSO
SQCK
SBSO
EXCK
XRST
SYSM
DATA
VSS
XLAT
CLOK
VDD
SENS
SCLK
ATSK
WFCK
XUGF
XPCK
GFS
C2PO
SCOR
VDD
C4M
WDCK
MIRR
DFCT
FOK
VSS
LOCK
MDP
SSTP
IOVSS1
SFDR
SRDR
TFDR
TRDR
FFDR
FRDR
IOVDD1
AVDD0
AVSS0
E
F
TEO
FEO
VC
A
B
C
D
AVDD4
RFDCO
PDSENS
AC_SUM
EQ_IN
LD
PD
RFC
AVSS4
RFACO
RFACI
AVDD3
BIAS
ASYI
ASYO
VPCO
VCTL
AVSS3
CLTV
FILO
FILI
PCO
AVDD5
DDVROUT
DDVRSEN
AVSS5
DDCR
LRCK
LRCKI
PCMD
PCMDI
VSS
BCK
BCKI
VDD
EMPH
EMPHI
IOVDD2
DOUT
TEST
TES1
IOVSS2
XVSS
XTAO
XTAI
XVDD
AVDD1
AOUT1
VREFL
AVSS1
AVSS2
VREFR
AOUT2
AVDD2
RMUT
COUT
IOVDD0
VR
AGND
F
C
B
A
E
D
TEI
FEI
SCOR
SENS
CLK
XLT
DATA
DOUT
DVDD
DGND
AVDD
LOUT
AGND
ROUT
XRST
MGND(7V)
M+7V
AGND
XTACN
(SPINDLE)
(SLED)
CD DSP
MOTOR/COIL
(LIMIT)
AUTOMATIC
POWER CONTROL
DRIVE
(Page 21)

HCD-NE3
2020
CN301
C350
JW304
JW309
JW314
JW320
JW324
JW325
JW326
JW327
JW328
JW329
JW331
JW332
JW333
JW334
JW335
JW336
JW337
JW338
JW342
JW343
JW344
JW345
JW346
JW347
JW348
JW349
JW350
JW353
JW352
JW354
JW302
JW359
JW340
JW339
JW351
JW321
JW307
JW372
JW376
JW375
JW370
JW369
JW363
JW362
JW357
JW361
JW360
JW358
JW356
JW355
JW341
JW322
JW318
JW316
JW315
JW313
JW311
JW310
JW312
JW365
JW366
JW364
CNB301
JW371
JW368
JW367
JW319
JW377
JW378
JW379
JW380
JW381
JW382
JW301
JW308
JW383
JW373
FB301
C310
FB302
JW384
CN309
R359
C305
C302
C215
C113
C114
C214
C213
L201
CNB307
D301
C351
C313
C315
C104
C204
C107
L101
C233
D318
C346
C235
C135
C232
C132
C328
C332
D306
D303
C353
D304
C345
Q339
C336
C136
C207
C236
Q311
D307
JW323
C324
R353
D310
Q314 Q313 Q312
D302
CN305
C329
C352
R352
C362
C361
C360
Q348
Q347
C333
C358
C356
C357
C355
Q345
R361
D308
R360
Q344
Q346
C354
C330
T301
Q317
C133
Q319
C115
CNB308
D305
C314
C309
D317
J303
CN303
CN302
C317
C311
D321
D322
C323
C319
C321
C322
C121
C221
R236
R123
R223
R122
R121 R221
R119
R219
R117
R217
R222
R120
R220 R118
R218
R116
R216
C127
Q326
Q327
C101
C201 R201
R101
R208
R108
C227
C209
C109
C126
C226
R358
Q343 Q342
R301
C312
R319
R302
R209
R109
C112
C212
C111
C308
C316
C318
C211
R115
R215
R113
R214
R213
R114
R212 R112
R211 R111
C210 C110
Q332
Q330Q329 Q328
C108
C208
R104
R204
IC302
Q331
C301
C206
C106
R107
R207
R205
R206 R106
C102
C202
R102
R202
R203
R103
R105
C203 C103
R303
R124
R320
R200
R143
R243
R237
R224
C234
C218
R228
R231
R232
C118
C134
R131
R128
R132
C320
R136
C335
R332
C217
C117
C216
C116
R125
R225
R126
R226
R137
R336
R351
R350
R315
R321
Q338
Q333
Q315
C326
R323
R322
R325 R324
R349
R327
R326
Q320
C331
R318
R348
R317
R368
R367
R366
R365
R364
R363
R362
C119
C219
FB317
R100
R304
R371
R370
R373
R372
R305
JW120
C370
CN307 CN306
IC305 IC306
C307 C306
S
1
123
654
7
G
D
SG
D
SG
D
EE
E
E
E
E
E
E
E
E
114
2815
E
E
E
MAIN BOARD
1-861-724-
11
(11)
1-861-729-
11
(11)
REG BOARD
1
L-CH
R-CH
ERASE
HRPE301
(REC/PB/ERASE)
7
B
CONTROL
BOARD
CNB302
E
E
E
EEE
E
E
E
EPOWER BOARD
CN902
1
1133
1
16
8
133
1
3
1
9
DAMP BOARD
CN502 FCONTROL BOARD CNB303
ABD BOARD
CN201
+
+
–
–
L
R
SPEAKER
IMPEDANCE
USE 8 – 16Ω
J302
C
HP BOARD
CNB501
L
(CHASSIS)
R
MD
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
A
B
C
D
E
F
G
H
I
J
K
L
M
N
6-6. PRINTED WIRING BOARDS – MAIN Section – •See page 17 for Circuit Boards Location. :Uses unleaded solder.
(Page 24)
(Page 24)(Page 22)(Page 18)
(Page 22)
(Page 26)
D301 K-14
D302 B-13
D303 G-8
D304 I-9
D305 C-11
D306 C-10
D307 K-13
D308 M-10
D310 L-10
D317 K-12
D318 B-10
D321 E-5
D322 D-5
IC302 C-12
IC305 K-6
IC306 K-7
Q311 M-11
Q312 L-10
Q313 L-10
Q314 L-9
Q315 K-13
Q317 F-8
Q319 G-7
Q320 F-7
Q326 C-14
Q327 C-13
Q328 B-14
Q329 B-13
Q330 B-13
Q331 B-14
Q332 B-15
Q333 K-12
Q338 K-14
Q339 I-9
Q342 F-10
Q343 E-9
Q344 H-13
Q345 I-13
Q346 E-12
Q347 G-12
Q348 G-12
•Semiconductor
Location
Ref. No. Location