Sony CMT-CNEZ3 User manual

SERVICE MANUAL
Ver. 1.0 2005.03
MICRO HI-FI COMPONENT SYSTEM
•CMT-NEZ3/NEZ5 are composed of the following models.
As service manuals are issued for each component model, please refer to them.
CMT-NEZ3/NEZ5
SPECIFICATIONS
COMPONENT MODEL NAME
CMT-NEZ3 CMT-NEZ5
Compact Disc Deck Receiver HCD-NEZ3 HCD-NEZ5
Speaker System SS-CNEZ3 SS-CNEZ5
9-879-530-01
2005C05-1
© 2005.03
Sony Corporation
Personal Audio Group
Published by Sony Engineering Corporation
Power requirements
North American model: AC 120 V, 60 Hz
Mexican model: AC 120 V, 60 Hz
European model: AC 230 V, 50/60 Hz
Australian model: AC 230 −240 V, 50/60 Hz
Korean model: AC 220 V, 60 Hz
Chinese model: AC 220 V, 50/60 Hz
Taiwanese model: AC 120 V, 50/60 Hz
Argentine model AC 220 V, 50/60 Hz
Saudi Arabian model: AC 120 −127, 220, 230 −240 V, 50/60 Hz
Other models: AC 120, 220 or 230 −240 V, 50/60 Hz
Adjustable with voltage selector
Power consumption
CMT-NEZ5
European model: 60 W
0.3 W (in Power Saving Mode)
Other models: 50 W
CMT-NEZ3
North American model: 40 W
European model: 45 W
0.3 W (in Power Saving Mode)
Other models: 45 W
Dimensions (w/h/d) (excl. speakers)
Approx. 164 ×235 ×265mm
Mass (excl. speakers)
CMT-NEZ5: Approx. 3.6 kg
CMT-NEZ3
North American model: Approx. 2.8 kg
Other models: Approx. 3.6 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.
US Model
Australian Model
CMT-CNEZ3
Canadian Model
AEP Model
UK Model
E Model
CMT-CNEZ3/CNEZ5
•Abbreviation
AR : Argentina model
AUS:Australian model
CND : Canadian model
E51 : Chirean and Peruvian models
EA : Saudi Arabia model
EE : East European model
KR : Korean model
MX : Mexican model
RU : Russian model
SP : Singapore model
TW : Taiwan model
1-754-102-31 ANTENNA, LOOP (LW.MW)
1-754-243-11 ANTENNA (FM)
2-055-382-01 BATTERY COVER (for RM-SC30)
2-582-894-11 MANUAL, INSTRUCTION (ENGLISH) (US, CND, AEP, UK, E,
TW, AR, SP, EA, E51, AUS)
2-582-894-21 MANUAL, INSTRUCTION (FRENCH) (CND, AEP, E, SP, EA)
2-582-894-31 MANUAL, INSTRUCTION (SPANISH)
(AEP, E, AR, MX, SP, E51)
2-582-894-41 MANUAL, INSTRUCTION (GERMAN, DUTCH) (AEP)
2-582-894-51 MANUAL, INSTRUCTION (ITALIAN, PORTUGUESE) (AEP)
2-582-894-61 MANUAL, INSTRUCTION (SWEDISH, DANISH, FINNISH)
(EE, RU)
2-582-894-71 MANUAL, INSTRUCTION (POLISH, CZECH, HUNGARIAN)
(EE, RU)
2-582-894-81 MANUAL, INSTRUCTION (GREEK, RUSSIAN) (EE, RU)
2-582-894-91 MANUAL, INSTRUCTION (ARABIC) (EA)
2-582-896-11 MANUAL, INSTRUCTION (TRADITIONAL CHINESE)
(TW, SP)
2-582-896-21 MANUAL, INSTRUCTION (KOREAN) (KR)
A-1108-432-A OVERALL ASSY (RM-SC30)
ACCESSORIES
Part No. Description Remark

2
CMT-NEZ3/NEZ5
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 2005.03 New

SERVICE MANUAL
COMPACT DISC DECK RECEIVER
HCD-NEZ3/NEZ5
Ver. 1.3 2005.11
SPECIFICATIONS
Main unit
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
(The United States model only)
CMT-NEZ5
With 6 ohm loads, both channels driven, from
120 −10,000 Hz; rated 18 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion from 250 milliwatts to
rated output.
CMT-NEZ3
With 6 ohm loads, both channels driven, from
120 −10,000 Hz; rated 9 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion from 250 milliwatts to
rated output.
Amplifier section
CMT-NEZ5
European model:
DIN power output (rated): 18 + 18 W (6 ohms at
1kHz, DIN)
Continuous RMS power output (reference):
25 + 25W (6 ohms at
1kHz, 10% THD)
Music power output (reference):
38 + 38 W
Pan-American model:
Continuous RMS power output (reference):
20 + 20 W (6 ohms at
1kHz, 10% THD)
Other models:
The following measured at AC 120, 220 or 240 V,
50/60 Hz
DIN power output (rated): 14 + 14 W (6 ohms at
1kHz, DIN)
Continuous RMS power output (reference):
20 + 20 W (6 ohms at
1kHz, 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.
CMT-NEZ3
North-American model:
Continuous RMS power output (reference):
10 + 10 W (6 ohms at
1kHz, 10% THD)
European model:
DIN power output (rated): 11 + 11 W (6 ohms at
1kHz, DIN)
Continuous RMS power output (reference):
15 + 15 W (6 ohms at
1kHz, 10% THD)
Music power output (reference):
28 + 28 W
Other models:
The following measured at AC 120, 220 or 240 V,
50/60 Hz
DIN power output (rated): 11 + 11 W (6 ohms at
1kHz, DIN)
Continuous RMS power output (reference):
15 + 15 W (6 ohms at
1kHz, 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.
9-879-528-04
2005K05-1
© 2005.11
Sony Corporation
Personal Audio Division
Published by Sony Engineering Corporation
– Continued on next page –
US Model
Australian Model
HCD-NEZ3
Canadian Model
AEP Model
UK Model
E Model
HCD-NEZ3/NEZ5
•HCD-NEZ3 is the amplifier, CD player, tape deck and
tuner section in CMT-NEZ3.
•HCD-NEZ5 is the amplifier, CD player, tape deck and
tuner section in CMT-NEZ5. Photo: HCD-NEZ5
Model Name Using Similar Mechanism NEW
CD Section Base Unit Name BU-K7BD81D2 or BU-K8BD83S-WOD
Optical Pick-up Name KSM-213EDP or KSM-213CDP
TAPE Section Model Name Using Similar Mechanism NEW
Tape Transport Mechanism Type CMAL5Z231

2
HCD-NEZ3/NEZ5
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.
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.
The following caution label is located inside the unit.
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 0SUR
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 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.
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
Tape deck section
Recording system 4-track 2-channel, stereo
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
Tuning range
Pan-American model: 530 −1,710 kHz
(with the tuning interval
set at 10 kHz)
531 −1,710 kHz
(with the tuning interval
set at 9 kHz)
European model: 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
General
Power requirements
North American model: AC 120 V, 60 Hz
Mexican model: AC 120 V, 60 Hz
European model: AC 230 V, 50/60 Hz
Australian model: AC 230 −240 V, 50/60 Hz
Korean model: AC 220 V, 60 Hz
Chinese model: AC 220 V, 50/60 Hz
Taiwanese model: AC 120 V, 50/60 Hz
Argentine model AC 220 V, 50/60 Hz
Saudi Arabian model: AC 120 −127, 220,
230 −240 V, 50/60 Hz
Other models: AC 120, 220 or
230 −240 V, 50/60 Hz
Adjustable with voltage
selector
Power consumption
CMT-NEZ5
European model: 60 W
0.3 W (in Power Saving
Mode)
Other models: 50 W
CMT-NEZ3
North American model: 40 W
European model: 45 W
0.3 W (in Power Saving
Mode)
Other models: 45 W
Dimensions (w/h/d) (excl. speakers)
Approx. 164 ×235 ×
265 mm
Mass (excl. speakers)
CMT-NEZ5: Approx. 3.6 kg
CMT-NEZ3
North American model: Approx. 2.8 kg
Other models: Approx. 3.6 kg
Design and specifications are subject to change
without notice.
CD player section
Laser Diode Properties Emission duration:
continuous
Laser Output: Less than
44.6 µW
(This output is the value
measurement at a distance
of 200 mm from the
objective lens surface on
the Optical Pick-up Block
with 7 mm aperture)
Frequency response 20 Hz −20 kHz
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-operatedAC voltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range are suitable. (See
Fig. A)

3
HCD-NEZ3/NEZ5
TABLE OF CONTENTS
1. SERVICING NOTES ............................................... 4
2. GENERAL ................................................................... 6
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 8
3-2. Cabinet............................................................................. 8
3-3. Cabinet (Top) Section ...................................................... 9
3-4. Base Unit (BU-K7BD81D2) ........................................... 9
3-5. Front Panel Section ......................................................... 10
3-6. Mechanical Deck (CMAL5Z231) ................................... 10
3-7. MAIN Board .................................................................... 11
3-8. Tuner Unit ....................................................................... 11
4. TEST MODE.............................................................. 12
5. MECHANICAL ADJUSTMENTS ....................... 13
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 – ...................... 21
7-6. Schematic Diagram – MAIN Section (1/2) – .................. 22
7-7. Schematic Diagram – MAIN Section (2/2) – .................. 23
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 ................................................................ 35
8-2. Mechanical Deck Section ................................................ 36
8-3. Panel Board Section ........................................................ 37
8-4. Cabinet (Top) Section ...................................................... 38
8-5. MAIN Board Section....................................................... 39
8-6. AC Board, DC Board Section ......................................... 40
9. ELECTRICAL PARTS LIST................................ 41
Ver. 1.1

4
HCD-NEZ3/NEZ5
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
•MODEL IDENTIFICATION
– Rear Cabinet –
MODEL Power Voltage Incdication
NEZ3: US, CND AC: 120 V 60 Hz 40 W
NEZ3: AEP, UK, EE, RU AC: 230 V -50/60 Hz 45 W
NEZ3: E, E51, SP AC: 120 V/220 V/230 −240 V
-50/60 Hz 45 W
NEZ3: EA AC: 120 −127 V/220 V/230 −240 V
-50/60 Hz 45 W
NEZ3: MX ca -120 V 60 Hz 45 W
NEZ3: TW AC: 120 V -50/60 Hz 45 W
NEZ3: AR ca -220 V 50/60 Hz 45 W
NEZ3: KR AC: 220 V -60 Hz 45 W
NEZ3: AUS AC: 230 −240 V -50/60 Hz 45 W
NEZ5: CND AC: 120V 60 Hz 50 W
NEZ5: AEP, UK, EE, RU AC: 230 V -50/60 Hz 60 W
NEZ5: E, E51, SP AC: 120 V/220 V/230 −240 V
-50/60 Hz 50 W
NEZ5: MX ca -120 V 60 Hz 50 W
NEZ5: TW AC: 120 V -50/60 Hz 50 W
NEZ5: AR ca -220 V 50/60 Hz 50 W
NEZ5: KR AC: 220 V -60 Hz 50 W
•Abbreviation
AR : Argentina model
AUS:Australian model
CND: Canadian model
E51 : Chilean and Peruvian model
EA : Saudi Arabia model
EE : East European model
KR : Korean model
MX : Mexican model
RU : Russian model
SP : Singapore model
TW : Taiwan model
Power Voltage Indication
Fig.1 Method to push the S1820
S1820
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.
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.
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 S1820. (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 S1820 as shown in Fig.1.
Note: Donot push thedetection leverstrongly, orit may bebent 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.

5
HCD-NEZ3/NEZ5
SERVICE POSITION
– CD BOARD –
–TAPE MECHANICAL DECK –
CD board
cabinet (top) section
tape mechanical dec
k

6
HCD-NEZ3/NEZ5 SECTION 2
GENERAL This section is extracted from
instruction manual.
Main unit
CD SYNC qk
Display window 6
DSGX 3
PHONES jack qd
PLAY MODE 5
Remote sensor 2
Tape deck qs
TUNER/BAND qg
TUNING +/−q;
TUNING MODE 5
VOLUME control 9
?/1 (power) 1
zPAUSE/START 4
ZPUSH OPEN/CLOSE (CD
open/close) 7
+/−8*
.m/M> (rewind/fast
forward, go back/go forward)
0
PUSH OPEN/CLOSE Z(tape
open/close) qa
x(stop) qf
CD/NX (play) qh
TAPE/Nqj
*Except for North American
model CMT-NEZ3
ALPHABETICAL ORDER
A – S T – Z
BUTTON DESCRIPTIONS
12 3 45 6 7
8
9
0
qa
qs
qd
q
f
q
g
qk
qj
qh

7
HCD-NEZ3/NEZ5
Remote control
CD qh
CLEAR qd
CLOCK/TIMER SELECT 2
CLOCK/TIMER SET 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 +/−q;
?/1 (power) 1
m/M (rewind/fast forward)
7
N(play) 8
X(pause) 8
x(stop) 8
+/−qa
./> (go back/go forward)
qf
−/+ (tuning) qf
ALPHABETICAL ORDER
A – O P – Z
BUTTON DESCRIPTIONS
4
5
6
7
8
9
0
3
2
1
qa
qd
qs
ql
qk
qj
qh
qg
qf
w;
Use buttons on the remote for the operation.
1Press ?/1 to turn on the unit.
2Press CLOCK/TIMER SET.
3Press .or >repeatedly to set the
hour.
4Press ENTER.
5Press .or >repeatedly to set the
minute.
6Press ENTER.
The clock starts working.
To adjust the clock
1 Press CLOCK/TIMER SET.
2 Press .or >repeatedly to select
“CLOCK”, then press ENTER.
3 Do the same procedures as step 3 to 6
above.
Note
The clock is not displayed in Power Saving Mode.
Setting the clock

8
HCD-NEZ3/NEZ5 SECTION 3
DISASSEMBLY
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
3-2. CABINET
(Page 8)
3-3. CABINET (TOP) SECTION
(Page 9)
3-5. FRONT PANEL SECTION
(Page 10)
3-6. MECHANICAL DECK (CMAL5Z231)
(Page 10)
3-4. BASE UNIT (BU-K7BD81D2)
(Page 9)
3-7. MAIN BOARD
(Page 11)
3-8. TUNER UNIT
(Page 11)
SET
2 two screws
(BVTP 3 × 10)
3
2
three screws
(BVTP 3 × 8)
1 two screws
(BVTP 3 × 10
)
5 cabinet
4 fan motor connector (CN313)
(HCD-NEZ5)
Ver. 1.1

9
HCD-NEZ3/NEZ5
3-3. CABINET (TOP) SECTION
3-4. BASE UNIT (BU-K7BD81D2)
1 screw
(BVTP 2.6
× 8)
1 screw
(BVTP 2.6
× 8)
5 connector
(S1820)
4 wire (flat type) (27 core
)
(CN317)
6 cabinet (top) section
2 claw
2 claw
3
2 four screws
(PWH 2.6 × 10)
1 wire (flat type) (27 core)
(CN201)
3 base unit (BU-K7BD81D2)
Ver. 1.1

10
HCD-NEZ3/NEZ5
3-5. FRONT PANEL SECTION
3-6. MECHANICAL DECK (CMAL5Z231)
6 four screws
(BVTP 3
× 8)
1 wire (flat type) (13 core) (FFC501)
(CN500)
3 wire (flat type) (19 core) (FFC1805)
(CN321)
4 wire (flat type) (9 core) (FFC1803)
(CN900)
5 connector
(CN301)
7 front panel section
2 wire (flat type) (13 core) (FFC1804) (except NEZ5: AEP, UK models)
wire (flat type) (15 core) (FFC1804) (NEZ5: AEP, UK models)
(CN320)
2 three screws
(BVTP 2.6
× 8)
2 screw
(BVTP 2.6
× 8
)
3 terminal lead wire
(WIRE200)
4 mechanical deck
(CMAL5Z231)
1 wire (flat type) (7 core) (FFC1801)

11
HCD-NEZ3/NEZ5
3-7. MAIN BOARD
3-8. TUNER UNIT
1 two connectors
(CN314, CN318)
4 wire (flat type) (11 core) (except NEZ5:AEP, UK models
)
wire (flat type) (15 core) (NEZ5: AEP, UK models)
(CN319)
2 screw (BVTP 3 × 8)
3
5 MAIN board
1 two screws
(BVTT 3
× 6)
1 three screws
(BVTT 3
× 6)
3
6 two screws
(BVTP 3
× 8)
7
5 AC board, DC board section
4 power cord connecto
r
(CN901)
2 terminal lead wire
(WIRE900)
9 tuner unit
8 wire (flat type) (11 core) (except NEZ5:AEP, UK models)
wire (flat type) (15 core) (NEZ5: AEP, UK models)

12
HCD-NEZ3/NEZ5 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/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.
PANELTEST
*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.
1119 V006
Version of micro computer
(In this case, version 006)
released date of micro computer
(In this case, released of November 19)
NE ASIA2
distination
(In this case, Asian model)
model name
(In this case, HCD-NEZXX)
CD ERROR HISTORY
*This mode can be used for CD error history display.
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. Each
time lmor MLbutton is pressed, CD error history
is changed.
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”.

13
HCD-NEZ3/NEZ5
SECTION 5
MECHANICAL ADJUSTMENTS SECTION 6 ELECTRICAL ADJUSTMENTS
•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)
0 dB=0.775 VDECK SECTION
Procedure:
1. Mode: Playback
set
HEAD PHONE board
PHONES jack
(J500)
+
–
level mete
r
test tape
P-4-A063
(6.3 kHz, –10 dB)
1. Demagnetize the record/playback head with a head
demagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
•TestTape
RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT
Note: Remove the cover (azimuth) before this adjustment.
Tape Signal Used for
P-4-A063 6.3 kHz, -10 dB Azimuth Adjustment

14
HCD-NEZ3/NEZ5
3. Mode: Playback
4. After the adjustments, apply suitable locking compound to
the pats adjusted.
Adjustment Location: Record/Playback/Erase Head
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)
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 block is replaced.
FOCUS BIAS CHECK
Procedure :
1. Connect the oscilloscope to TP (RFACO) and TP (VC) on the
CD board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the CD ubutton.
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:
TP
(RFACO)
TP (VC)
– CD BOARD (Conductor Side) –
+
–
CD board
TP (RFACO)
TP (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
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.
Screw
position
L-CH
peak
within
1dB
Output
level
L-CH
peak R-CH
peak
within
1dB
Screw
position
R-CH
peak
CD SECTION

HCD-NEZ3/NEZ5
1515
HCD-NEZ3/NEZ5
SECTION 7
DIAGRAMS
7-1. BLOCK DIAGRAM – CD SERVO Section –
MIACK
8
PO11/BUCK/AD14
36
MILP
5
RESET
2
MICS
4
MIDIO
6
MICK
7
MP3 DECODER
IC301
A/D
CONVERTER
CH2OUTF
CH2OUTR
23
24
21
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 CLOCK XLAT SBSO
SENS
CDDATA
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
119
108
21 23
3
1
2
7
TO SERVO AUTO
SEQUENCER
42
51 53
XPCK
112
50 52
45
46
6
XRST
100
XRST
67
96 97
81
78
117 93
77
86
98 99115107102 105 104 110 111 113 68
31
CDCLK
33 68
LRCK BCK PCMD
LRCKIA
SDI0
63 66 65
16
BCKIA
15
SFSY/LRCKIB
19
SBSY/BCKIB
18 14
LRCKI BCKI PCMDI
SDO0
62 60 61
1132 19
26
27
28
29
24
22
20
19
37
36
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 41
35
34 EQ
AC_
SUM RFAC
VCA
X171
16.9344MHz
SYSTEM CONTROLLER
IC1801 (1/2)
S101
(LIMIT)
MP3DI 29
MP3DO 30
MP3CLK 28
MICS 73
MIACK 72
MP3REQ 69
MILP 70
MP3RST 75
XTCN 66
STANDBY
3
MP3STB 71
• R-ch is omitted due to same as L-ch.
XTACN 95
(Page 16)

HCD-NEZ3/NEZ5
1616
HCD-NEZ3/NEZ5
AC
DETECT
Q333, 338
R-CH
+
56
INPUT SELECT,
ELECTRICAL VOLUME
IC302
57
28
RECO-L
18
OUT-L
13
CONT
21 CD-L
23 ST-L
2TC-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
J321
AUDIO IN
: AUX IN
J500
PHONES
SPEAKER
IMPEDANCE
USE 6 – 16Ω
+
–
–
+R
LJ302
TUNER UNIT
L OUT
R OUT
ST CE CE
R-CH
TUNED TUNED
STEREO STEREO
ST MUTE TU-MUTING
ST DIN DO
ST DOUT DI
ST CLK CLK
CE
TUNED
STEREO
DO
DI
CLK
RDS DATA RDS DATA
RDS INT RDS CLOCK
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
+
POWER
AMP
IC501
53
STDIN
51
STCLK
49
STCE
48
TUNED
54
STEREO
50
DOUT
TU-MUTING
55
STMUTE
RDS DATA
RDS CLOCK
47
REC/PB
18
BIAS
RDSDATA
RDS INT
87
I POWER MONITOR
58
FDATA
60
AMPMUTE
61
AMPSTBY
CAPSTAN/REEL
MOTOR DRIVE
Q1804, 1805
PLUNGER
DRIVE
Q1802, 1803
MM
(CAPSTAN/REEL)
(DECK-A)
SOL
10V
MOTOR
10V
PACK
REC
PLAY SW
END SW
TCPLAY
ENDSW
94
78
79
TC HARF/REC
80 S0L
35 LCDDATA
36 LCDCLK
81 TCMOTOR
SIRCS
7
SYSTEM CONTROLLER
IC1801 (2/2)
(NEZ5: AEP, UK, EE, RU)
(EXCEPT E, E51, EA, SP)
(EXCEPT E, E51, EA, SP)
(E, E51, EA, SP)
(NEZ5)
(NEZ5: AEP, UK, EE, RU)
(NEZ5: AEP, UK, EE, RU)
M301
(FAN)
FAN MOTOR
DRIVE
Q316, 317
MM
+
D307
D320
D313
(AC IN)
SUB POWER
TRANSFORMER
T901
MAIN POWER
TRANSFORMER
T902
SYS +3.3V
LCD +3.3V
LCD +4V
RECT
D911 – 914
D1809
D1898
D922, 923
D920, 936
AMP B+
TO
POWER AMP
AMP B–
VOLTAGE
SELECTOR
S901
+4V
REGULATOR
IC901
+9V
REGULATOR
IC902
+10V
REGULATOR
IC900
D +4V
+4V
REGULATOR
IC903
RECT
D916, 917
RECT
D918, 919
RECT
D907 – 910
RDS +3.3V
AM
ANTENNA
FM ANT
AM ANT
ANT GND
ANT GND
FM 75Ω
COAXIAL
VOLTAGE
DETECT
IC1803
MAIN POWER
RELAY DRIVE
Q311, 315
+3.3V
REGULATOR
D305
D +3.3V
A +9V
M +10V
+7V
REGULATOR
Q320, 321
M +7V
B+ SWITCH
Q300, 301
65CDON
6POWER ON
20ACCUT
12RESET
REMOTE CONTROL
RECEIVER
IC1802
BACKLIGHT
76
LED DRIVE
Q1808
D1804, 1805
(LCD BACK LIGHT)
STBYLED
5
LED DRIVE
Q1806
D1806
X1801
32.768kHz
11 10
XT2
XT1
15 13
X1802
10MHz
CF2
CF1
LCD1801
LIQUID
CRYSTAL
DISPLAY
97 VOL ENCORDER
77 CD OPEN
ROTARY
ENCODER
RV1801
VOLUME
STANDBY
S1801 – 1813
(FRONT PANEL KEYS)
S820
(CD LID OPEN/CLOSE DETECT)
KEY0,
KEY1
90, 89
RESET
SWITCH
Q1801
AC DETECT
Q1807
RY901
CD +1.5V
+1.5V
REGULATOR
IC303
74 KEYWAKEUP B+ SWITCH
Q1809 – 1811
• Abbreviation
E51 : Chilean and Peruvian
EA : Saudi Arabia
EE : East European
RU : Russian
SP : Singapore
7-2. BLOCK DIAGRAM – MAIN Section –
(Page 15)

HCD-NEZ3/NEZ5
1717
HCD-NEZ3/NEZ5
•Note for PrintedWiring Boards and Schematic Diagrams
•Indication of transistor
C
BThese are omitted. E
Q
•Circuit Boards Location
HEAD PHONE board
PANEL board
CD board
SHIELD board
(EXCEPT NEZ3: AEP, East European,
Russian, UK, Korean/
NEZ5: AEP, UK, Korean models)
MAIN board
TUNER UNIT
DC board
CONNECT board AC board
TRANS FIXED board
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
•Voltages are takenwith aVOM(Input impedance10 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
•Abbreviation
AR : Argentina model
AUS:Australian model
CND : Canadian model
E51 : Chiliean and Peruvian models
EA : Saudi Arabia model
EE : East European model
KR : Korean model
MX : Mexican model
RU : Russian model
SP : Singapore model
TW :Taiwan model
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: Partsonthe pattern facesideseenfrom
(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 identi-
fied by mark 0or dotted
linewithmark0arecriti-
cal for safety.
Replace only with part
number specified.
Note:
Lescomposantsidentifiés par
une marque 0sont critiques
pour la sécurité.
Neles remplacerque par une
pièce portant le numéro
spécifié.

HCD-NEZ3/NEZ5
1818
HCD-NEZ3/NEZ5
C10
C260
C14
C15
C16
C18
C11
R405
C316
R354 R353
R352
R351
R302
R253
C315
R191
R172
R171
R162
R313
X171
R121
R12
R11
R10
Q10
C116
C312
C184
C183
C303
C302
C305
C259
C258
C257
C255
C203
C196
C195
C201
C182
C171
C172
C308
C151
C134
C125
C123
R165
R13
C17
FB301
C318
R201
C174
R173
R205
C209
C210
C314
M102
S101
M101
IC251
IC101
CN101
CN201
R419
R412
R411
R410
R409
R408
R407
R406
R404
R403
R402
R401
R305
R303
R301
R252
R251
R182
R181
R163
R151
R143
R142
R141
R133
R132
R131
R114
R113
R112
R111
R307
C311
C310
C309
C307
C306
C252
C251
C194
C181
C320
C163
C162
C143
C142
C141
C133
C132
C131
C124
C111
C122
C115
C114
C113
C112
C185
C186
R306
IC303
C317
R203
R161
C161
C211
C212
R204
C213
IC301
C313
M
E
(COMPONENT SIDE)
CD BOARD
1-861-619-
21
(21)
30
31 60
120 91
1
61
90
(CONDUCTOR SIDE)
CD BOARD
1-861-619-
21
(21)
(SPINDLE)
M(SLED)
13
54
116
17
32
64
49
4833
(LIMIT)
1
27
A
MAIN
BOARD
CN317
TP
(RFACO)
OPTICAL
PICK-UP
BLOCK
(KSM-213EDP)
TP
(VC)
17 148
28 22 1521
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
A
B
C
D
E
F
G
H
I
R167
R166
(Page 21)
7-3. PRINTED WIRING BOARD – CD Board – •See page 17 for Circuit Boards Location. : Uses unleaded solder.