Sony HCDNE-3 Service manual
HCD-NE3
SERVICE MANUAL
Ver. 1.1 2005.07
• HCD-NE3 is the amplifier, CD player, tape deck
and tuner section in CMT-NE3.
CD Section Base Unit Name BU-K7BD80B
TAPE Section
US Model
Canadian Model
AEP Model
UK Model
E Model
Austr alian Model
Model Name Using Similar Mechanism NEW
Optical Pick-up Name KSM-213EDP/C2NP
Model Name Using Similar Mechanism NEW
Tape T ransport Mechanism Type CMAL5Z220A
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):
European model:
DIN power output (rated): 11 + 11 W (6 ohms at 1
Continuous RMS power output (reference):
Music power output (reference):
Other models:
The following measured at AC 230 V or AC 120 V, 50/
60 Hz
DIN power output (rated): 11 + 11 W
Continuous RMS power output (reference):
15 + 15 W
(6 ohms at 1 kHz, 10%
THD)
kHz, DIN)
15 + 15W (6 ohms at 1
kHz, 10% THD)
25 + 25 W
(6 ohms at 1 kHz, DIN)
15 + 15 W
(6 ohms at 1 kHz, 10%
THD)
SPECIFICATIONS
Inputs
MD (phono jacks): Sensitivity 450 mV,
Outputs
PHONES: Accepts headphones with
SPEAKER: Accepts impedance of 6 to
CD player section
Laser Semiconductor laser
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),
impedance 47 kilohms
an impedance of 8 ohms or
more
16 ohms.
(λ=780 nm)
Emission duration:
continuous
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:
AEP and UK models: 531 – 1,602 kHz
Other models: 530 – 1,710 kHz
Antenna AM loop antenna, external
Intermediate frequency 450 kHz
530 – 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 – 1,710 kHz
(with the tuning interval
set at 9 kHz)
(with the tuning interval
set at 9 kHz)
(with the tuning interval
set at 10 kHz)
531 – 1,602 kHz
(with the tuning interval
set at 9 kHz)
antenna terminal
General
Power requirements
US, Canadian and Mexican models:
AEP and UK models: 230 V AC, 50/60 Hz
Australian model: 230 – 240 V AC, 50/60 Hz
Argentina and Korean models:
Taiwanese model: 120 V AC, 50/60 Hz
Saudi Arabian model: 120 – 127/220 V AC, 50/
Other models: 110 – 120 V or 220 – 240 V
Power consumption 45 W
Dimensions (w/h/d) Approx. 164 × 230.5 × 263
Mass Approx. 3.7 kg
Supplied accessories Remote Commander (1)
Design and specifications are subject to change
without notice.
120 V AC, 60 Hz
220 V AC, 60 Hz
60 Hz
AC, 50/60 Hz
Adjustable with voltage
selector
mm incl. projecting parts
and controls
R6 (size AA) batteries (2)
AM loop antenna (1)
FM lead antenna (1)
9-877-693-02 Sony Corporation
2005G05-1 Personal Audio Group
© 2005.07 Published by Sony Engineering Corporation
COMPACT DISC DECK RECEIVER
HCD-NE3
r
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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation exposure.
The following caution label is located inside the unit.
This appliance is classified
CLASS 1 LASER PRODUCT
LUOKAN 1 LASER LAITE
KLASS 1 LASER APPARAT
as a CLASS 1 LASER
product.
This label is located on the
rear exterior.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following 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. Follo w 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” indication is 0.75 V, so analog meters must have an accurate lowvoltage scale. The Simpson 250 and Sanwa SH-63T rd are examples of a passive VOM that is suitable. Nearly all battery
operated digital multimeters that have a 2 V A C range are suitable. (See Fig. A)
To Exposed Metal
Parts on Set
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the leadfree 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.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED
LINE WITH MARK 0 ON 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.
AC
1.5 k
0.15 µF
Fig. A. Using an AC voltmeter to check AC leakage.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE 0
SUR LES DIAGRAMMES SCHÉMA TIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
Ω
Earth Ground
voltmete
(0.75 V)
2
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
HCD-NE3
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
3
HCD-NE3
SECTION 1
SER VICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
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 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 objectiv e lens.
• MODEL IDENTIFICATION
– Rear Cabinet –
Power Voltage Indication
MODEL Pow er V oltage Incdication
US, Canadian, Mexican and
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
Other models
AC: 120 V 60 Hz 45 W
AC: 120 – 127/220 V
50/60 Hz 45 W
AC: 110 – 120/220 – 240 V
50/60 Hz 45 W
NOTE ON LEADING THE WIRE (FLAT TYPE)
• In order to separate wire (flat type) from no shield portion of TC wire, stick filament tapes, as shown in a figure.
TC wire (no shield portion)
main board
filament tape
wire (flat type)
4
SERVICE POSITION
– BD board –
HCD-NE3
BD board
– TCM block –
– AMP board –
TCM block
AMP board
5
HCD-NE3
• LOCATION OF CONTROLS
Main unit
ALPHABETICAL ORDER
A – O
BASS/TREBLE 8
Cassette compartment qf
CD SYNCHRO qg
DISPLAY 0
Displaywindow 5
DSGX 9
P – Z
PHONES jack qk
PLAY MODE qj
Remote sensor 2
TUNER/BAND qs
TUNING +/− 4
TUNING MODE qj
VOLUME qa
12345 6
SECTION 2
GENERAL
BUTTON DESCRIPTIONS
?/1 (power) 1
.m/M> (skip back/
skip forward,rewind/fast
forward) 4
x (stop) 3
z RECPAUSE/START qh
CD/NX(play/pause) ql
TAPE/N(play) w;
Z PUSHOPEN/CLOSE (CD
open/close) 6
Z PUSHOPEN (tape open/close)
qd
This section is extracted from
instruction manual.
w;
ql
qk
qj
8
9
0
qa
qs
qd
qf
qgqh
6
HCD-NE3
Remote control
ALPHABETICAL ORDER
A – O P – Z
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
ql
qk
qj
qh
qg
qf
CMT-NE3
w; 1
BUTTON DESCRIPTIONS
?/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
2
3
4
5
6
7
8
Setting the clock
Use buttons on the remote for the operation.
1
Press ?/1 to turn on the system.
2
Press CLOCK/TIMER SET.
3
Press ./> repeatedly to set the
hour.
4
Press ENTER.
5
Press ./> repeatedly to set the
minute.
6
Press ENTER.
The clock starts working.
To adjust the clock
1
Press CLOCK/TIMER SET.
2
Press ./> until “CLOCK” appears,
then press ENTER.
3
Do the same procedures as step 3 to 6
above.
Note
The clock is not displayed in Power Saving Mode.
qd
9
qs
0
* Button does not function with this model.
*
7
HCD-NE3
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
SET
3-2. REAR CABINET
(Page 8)
3-3. TOP PANEL ASSY
(Page 9)
SECTION 3
DISASSEMBLY
3-4. FRONT PANEL ASSY
(Page 9)
3-6. MECHANICAL DECK
(Page 10)
Note: Follow the disassembly procedure in the numerical order given.
3-5. BASE UNIT
(BU-K7BD80B)
(Page 10)
3-7. MAIN BOARD
(Page 11)
3-2. REAR CABINET
1
four screws
(BVTP3 × 8)
3-8. AMP BOARD
4
five screws
(BVTP3
(Page 11)
×
10)
3
two screws
(BVTP3
7
×
10)
rear cabinet
6
two screws
(BVTP3 × 10)
5
two screws
(BVTP3 × 10)
2
four screws
(BVTP3 × 8)
8
r
3-3. TOP PANEL ASSY
6
top panel assy
5
connector
(S820)
HCD-NE3
2
claw
3-4. FRONT PANEL ASSY
1
3
q;
wire (flat type) (11 core)
5
connector
(CN301)
wire (flat type) (19 core)
(CN302)
1
4
claw
2
wire (flat type) (8 core)
(CN303)
wire (flat type) (17 core)
(CN305)
3
connector
(CN309)
4
connecto
(CN501)
qs
harness
qd
qa
screw (2.6 × 10)
8
flont panel assy
7
9
6
two screws
(BVTP3
×
10)
9
HCD-NE3
)
3-5. BASE UNIT (BU-K7BD80B)
5
two screws
×
10)
(2.6
6
base unit
(BU-K7BD80B)
4
two screws
(2.6
×
10)
2
CD cover
3-6. MECHANICAL DECK
1
three screws
(BVTP2.6
×
8)
2
screw
(BVTT2.6
3
wire (flat type) (17core)
(CN201)
1
three screws
×
10)
×
6)
(2.6
10
4
mechanical deck
3
shield (TC
3-7. MAIN BOARD
)
4
two screws
(BVTP3 × 10)
6
5
main board
tuner (FM/AM)
1
connector (CNB308)
3
connector (CNB307
HCD-NE3
3-8. AMP BOARD
4
AMP board
2
connector (CN902)
3
two screws
(BVTP3
×
10)
1
connector (CNB308)
2
connector (CNB307)
11
HCD-NE3
SECTION 4
TEST MODE
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/1 button to turn the power on.
2. While pressing the x button, press the I/1 button 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/1 button to turn the power on.
2. While pressing the [DISPLAY] button, press the I/1 button
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
Version of micro computer
(In this case, version 100)
released date of micro computer
(In this case, released of December 9)
4. Press the [BASS/TREBLE] button, the model name and destination are displayed.
example of display:
N3 NA
destination
(In this case, North-American model)
model name
(In this case, HCD-NE3)
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/1 button to turn the power ON.
2. Press the CD N X button 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. Press the TUNING + M > and TUNING – . m buttons,
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 history is. “0” 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 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/1 button to turn the power ON.
2. Press the CD N X button to select “CD”.
3. While pressing the x button, 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.
12
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/1 button to turn
the power off.
2. While depressing the TUNING + M > button, press
the I/1 button.
3. The message “9K STEP” or “10K STEP” is displayed on the
liquid crystal display, and thus the channel step is changed
over.
HCD-NE3
13
HCD-NE3
SECTION 5
ELECTRICAL CHECK
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 MΩ impedance.
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
oscilloscope
(DC range)
BD board
TP012 (RFACO)
TP013 (VC)
+
–
Procedure :
1. Connect the oscilloscope to TP012 (RF A CO) and TP013 (VC)
on the BD board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the CD N X button.
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)
VOLT/DIV: 0.2 V (with the 10: 1 probe in use.)
TIME/DIV: 500 ns
1.1
0.2 Vp-p
When observing the eye pattern, set the oscilloscope
for AC range and raise vertical sensitivity.
Checking Location:
– BD BOARD (Conductor Side) –
TP012
(RFACO)
14
TP013
(VC)
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