Sony dvpns 9100 es service manual

Page 2

DVP-N89100ES

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.

CLASS 1 LASER PRODUCT
LUOKAN 1 LASERLAITE

KLASSI LASERAPPARAT

This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.

CLASS 1 LASER PRODUCT

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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

SAFETY CHECK-OUT

After correcting the original service problem, perform the following
safety check before releasing the set to the customer:

Check the antenna tenninals, 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
WTA540A. 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 lowevoltage
scale. The Simpson 250 and Sanwa SH763Trd 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
Pads on Set
AC
0.15M g 1.5 kg / voltmeter
(0.75 V)

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

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ATTENTION AUCOMPOSANT AYANT RAPPORT
A LA SECURITEI

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