Service Manuals, User Guides, Schematic Diagrams or docs for : Sony Sony MDS-JA30ES Minidisc_deck
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MDS-JA30ES
SERVICE MANUAL US Model
Canadian Model
AEP Model
UK Model
Photo: GOLD
U.S. and foreign patents licensed from Dolby Laboratories Model Name Using Similar Mechanism MDS-JA50ES
Licensing Corporation.
MD Mechanism Type MDM-4B
Base Unit Type MBU-2B
Optical Pick-up Type KMS-210A/J-N
SPECIFICATIONS
-- Continued on next page --
MINIDISC DECK
MICROFILM
SAFETY CHECK-OUT
After correcting the original service problem, perform the
following safety checks 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
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 microampers).
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 2V AC range are suitable. (See
Fig. A)
To Exposed Metal
Parts on Set
CAUTION
Danger of explosion if battery is incorrectly replaced. AC
Replace only with the same or equivalent type recommended by voltmeter
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