Ver 1.1 2002.01
9-960-833-12
Sony Corporation
2002A0500-1
Home Audio Company
C
2002.1
Published by Sony Engineering Corporation
DIGITAL AUDIO TAPE DECK
Model Name Using Similar Mechanism
DTC-A8
Tape Transport Mechanism Type
DATM-55
US Model
Canadian Model
AEP Model
SERVICE MANUAL
PCM-R500
SPECIFICATIONS
Continued on next page
2
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 .
Notes on chip component replacement
· Never reuse a disconnected chip component.
· Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
MODEL IDENTIFICATION
Model Number label (Printed in Back Panel)
MODEL NO. PCM-R500
DIGITAL AUDIO TAPE DECK
US, Canadian model : AC 120 V 60 Hz 34 W
AEP Model
: AC 230 V
/ 50/60Hz 34 W
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by the
manufacturer.
Discard used batteries according to the manufacturer's instructions.
ADVARSEL!
Lithiumbatteri-Eksplosionsfare ved fejlagtig håndtering.
Udskiftning må kun ske med batteri
af samme fabrikat og type.
Levér det brugte batteri tilbage til leverandøren.
ADVARSEL
Eksplosjonsfare ved feilaktig skifte av batteri.
Benytt samme batteritype eller en tilsvarende type
anbefalt av apparatfabrikanten.
Brukte batterier kasseres i henhold til fabrikantens
instruksjoner.
VARNING
Explosionsfara vid felaktigt batteribyte.
Använd samma batterityp eller en ekvivalent typ som
rekommenderas av apparattillverkaren.
Kassera använt batteri enligt fabrikantens instruktion.
VAROITUS
Paristo voi räjähtää, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin.
Hävitä käytetty paristo valmistajan ohjeiden mukaisesti.
3
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing 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 microampers). Leak-
age 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 pas-
sive 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
µF
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
Fig. A.
Using an AC voltmeter to check AC leakage.
TABLE OF CONTENTS
1.
GENERAL ..................................................................... 4
2.
DISASSEMBLY ............................................................ 15
3.
ADJUSTMENTS .......................................................... 19
4.
DIAGRAMS
4-1.
Block Diagrams ................................................................. 26
4-2.
Printed Wiring Board RF Section ................................ 33
4-3.
Schematic Diagram RF Section ................................... 35
4-4.
Printed Wiring Boards MD Section ............................. 38
4-5.
Schematic Diagram MD Section ................................. 41
4-6.
Printed Wiring Boards DIGITAL Section ................... 45
4-7.
Schematic Diagram DIGITAL Section ........................ 49
4-8.
Schematic Diagram AUDIO Section ........................... 53
4-9.
Printed Wiring Boards AUDIO Section ....................... 57
4-10. Printed Wiring Boards DISPLAY Section ................... 61
4-11. Schematic Diagram DISPLAY Section ....................... 65
4-12. IC Pin Function Description .............................................. 72
5.
EXPLODED VIEWS ................................................... 83
6.
ELECTRICAL PARTS LIST .................................... 91
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
! OR DOTTED
LINE WITH MARK
! 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 PUB-
LISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE
!
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.
4
SECTION 1
GENERAL
This section is extracted
from instruction manual.
5