Sony hcd nez 3 service manual

Page 1

HCD-NEZ3/NE25

SERVICE MANUAL

Ver. 1.3 2005.11

US Model

Australian Model
HCD-NE23

Canadian Model
AEP Model

UK Model

E Model

HCD-NEZS/NEZ 5

l\ . r
X:
tie"
Photo: HCD-NEZS

I HCD-NE23 is the amplifier, CD player, tape deck and
tuner section in CMT-NEZ3.

I HCD-NEZS is the amplifier, CD player, tape deck and
tuner section in CMT-NEZS.

Model Name Using Similar Mechanism

NEW

CD Section Base Unit Name

BU-K7BD81 D2 or BU-KSBD83S-WOD

Optical Pick-up Name

KSM-213EDP or KSM-213CDP

_ Model Name Using Similar Mechanism
TAPE Section

NEW

Tape Transport Mechanism Type

CMAL52231

SPECIFICATIONS

PaneAmet'Ican model:

Continuous RMS power output (reference):
20+ 20 W (6 ohms at
I kHz. 10% THD)

Main unit
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC

DISTOHTION: Other models:
(The United States model only) The iollowing measured at AC [20, 221] or 240 V,
CMT-NEZS 50/61le

DIN power output (rated): 14 + 14 w (6 ohms at

With 6 ohm loads. both channels driven, from
120 - 10,000 Hz; rated 18 watts per channel

1 kHz. DIN)
Continuous RMS power outpiii (reterence):

European model:
DIN power output (raled): 11 + 11 w (6 ohms at

1 kHz. DIN)
Continuous RMS power output (i-eterence):

15 +15 W (o oiims at
1 kHz, 10% THD)
Music power output (reterence)
28 + 28 w
Other models:
The roiiownig measured at AC 120, 220 or 240 v,

50/60 Hz
DIN power oiiipiit (rated):

minimum RMS power. with no more than 10% 20 + 20 W (6 ohms at

1 kHz, [(1% THD) ll + 11 W (6 ohms at

total harmonic distortion from 250 niilliwatts to

rated output. Inputs 1 kHz, DIN)
C AUDIO IN: senmmty 25(] my, Continuous RMS power output (retereuce):

MTNEZ3 Impedance 47 kiiohms 15 + 15 W16 011 at
With 6 ohm loads. both channels driven, from Outputs 1 kHz, 10% THD)
120 - 10,000 Hz; rated 9 watts per channel PHONES. Accepts headphones with
minimum RMS power. with no more than 10% animpedancc othhuis or Inpuls
total harmonic distortion from 250 inilliwatrs to more AUDIO IN Sensitwity 25 IV~
fled output. SPEAKER: Accepts impedance 0t Ei to unpedance 47 kilohms

_ _ _ to ohms, Outpms
Amplilier section CMT NE23 PHONES: Accepts headphones with
CMT-NEZS thVAmmcan [under an impedance or 8 ohms or
European model: more
Continuous RMS owei- out ul (i'eternce):
DIN power oulput (rated): 18 + 18 W (5. ohms at P 1'?) + 10 who ohm m SPEAKER Accents Impedance M610
1 kHz, DIN) 16 ohms.

I kHz, 10% THD)
Continuous RMS power output (i-eterence):

25 + 25W (6 ohms at
1 kHz, 10%THD)
Music power output (reference):
38 + 38 w
- Continued on next page -

COMPACT DISC DECK RECEIVER

9_879_528_04 Sony Corporation
2005mm Personal Audio Division
@2005. Published by Sony Engineering Corporation ®

Page 2

HCD-NEZ3/NEZ5

CD player section
Laser Diode Properties Emission duration:
continuous

Laser Output: Less than
44.6 uw

(This output is the value
measurement at a distance
of 200 mm from the
objective lens surface on
the Optical Pickrup Block
with 7 mm aperture)

Frequency response 20 Hz - 20 kHz

Tape deck section
Recording system

Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
Antenna

Antenna terminals

4rtrack Zechannel, stereo

87.5 -108.0 MHz
FM lead antenna
75 Ohms unbalanced

European model:

Other models:

Antenna

Intermediate frequency

General
Power requirements

North American model:

Mexican model:
European model:
Australian model:
Korean model:
Chinese model:

531 - 1,602 kHz

(with the tuning interval
set at 9 kHz)

530 - 1,710 kHz

(with the tuning interval
set at 10 kHz)

531 - 1,602 kHz

(with the tuning interval
set at 9 kHz)

AM loop antenna, external
antenna terminal

450 kHz

AC 120 V, 60 Hz

AC 120 V, 60 Hz

AC 230 V. 50/60 Hz
AC 230 - 240 V, 50/60 Hz
AC 220 V, 60 Hz

AC 220 V, 50/60 Hz
AC 120 V. 50/60 Hz
AC 220 V, 50/60 Hz
AC 120 - 127, 220,
230 - 240 V, 50/60 Hz
AC 120, 220 or

Power consumption
CMTeNEZS

European model: 60 w
0.3 w (in Power Saving
Mode)

Other models: so w

CMTeNEZS

North American model: 40 w

European model: 45 w
0.3 w (in Power Saving
Mode)

Other models: 45 w

Dimensions (w/lt/d) (excl. speakers)
Approx. 164 x 235 x
265 mm

Mass (excl. speakers)

CMTeNEZS: Approx. 3.6 kg
CMTeNEZS

North American model: Approx. 2.8 kg
Other models: Approx. 3.6 kg

Intermediate frequency 10.7 MHz Taiwanese model:
AMtuner section Argentine model
Tuning 1' "5&9 Saudi Arabian model:
PanrAmencan model: 530 - 1,710 kHz

(with the tuning interval _

set at 10 kHz} Other models.

531 e 1.710 kHz

(with the tuning interval

set at 9 kHz)

Notes on chip component replacement
0 Never reuse a disconnected chip component.
0 Notice that the minus side of a tantalum capacitor may be
damaged by heat

Flexible Circuit Board Repairing
0 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).
0 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
as a CLASS 1 LASER
product.

This label is located on the
rear exterior.

cLAss r LASER PRODucT

LUOKAN t LASER LANE
KLASS t LASER APPARAT

SAFETY CHECK-OUT

After correcting the original sewice 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

SAFETY-RELATED COMPONENT WARNING !!

COMPONENTS IDENTIFIED BY MARK A OR DOTTED LINE
WITH MARK A 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.

2

230 -~ 240 V, 50/60 Hz
Adjustable with voltage
selector

Design and specifications are subject to change
without notice.

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

ll 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.

31 Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The limit indication
is 0175 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 VAC range are suitable. (See

Fig. A)
To Exposed Metal
Parts on Set
AC
0.15 pF : g 1.5 kn / voltmeter
(0.75 V)

_T_ Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.

ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITE!

LES COMPOSANTS IDENTIFIES PAR UNE MARQUE A SUR
LES DIAGRAMMES SCHEMATIOUES ET LA LISTE DES
PIECES SONT CRITIQUES POUR LA SECURITE DE
FONCTIONNEMENT. NE REMPLACEFl CES COM- POSANTS
OUE PAR DES PIECES SONY DONT LES NUMEROS SONT
DONNES DANS CE MANUEL OU DANS LES SUPPLEMENTS
PUBLIES PAR SONY.