DAV-DZ230, DAV-DZ231, DAV-HDZ235, HCD-DZ230, HCD-DZ231, HCD-HDZ235 - Sony DVD Service Manual (repair manual). Page 2

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HCD-DZ230/DZ231/HDZ235
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.
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  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. 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” 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)
1.5 k
0.15 
µ
F
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
Fig. A.
Using an AC voltmeter to check AC leakage.
MODEL IDENTIFICATION
– Rear Panel –
Model
Part No.
DZ230 : AEP, UK models
2-889-997-0
[]
DZ231 : AEP, UK models
2-889-997-1
[]
HDZ235 : US, CND models
2-889-997-2
[]
Abbreviation
CND : Canadian model
COAXIAL
AM
FM75
EURO AV
OUTPUT(TO TV)
(DVD ONLY)
OUT
DMPORT
FRONT R
CENTER
WOOFER
FRONT L
SUR R
SUR L
SPEAKER
SPEAKER
Parts No.
Special Component Notice
The components identified by mark 9  contain confidential
information.
Strictly follow the instructions whenever the components are repaired
and/or replaced.
Notice pour composants spéciaux
Les composants identifiés par la marque 9  contiennent des
informations confidentielles.
Suivre scrupuleusement les instructions chaque fois qu’un
composant est remplacé et / ou réparé.
General
Power requirements
120 V AC, 60 Hz
Power consumption
On: 150 W
Standby: 0.3 W (at the 
Power Saving mode) 
Dimensions (approx.)
430 
× 63 × 380 mm (17 ×  
1
/
2
 
× 15 inches) (w/h/d) 
incl. projecting parts
Mass (approx.)
4.1 kg (9 lb 1 oz)
Design and specifications are subject to change 
without notice.
Power requirements
220 – 240 V AC, 50/60 Hz 
Power outputs (DIGITAL MEDIA PORT)
DC OUT: 5 V, 700 mA 
DZ230/DZ231:
HDZ235:
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