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MODEL IDENTIFICATION
- BACK PANEL -
3-919-820-0000 : US model
3-919-820-1001 : AEP model
3-919-820-2001 : E model
3-919-820-3000 : Australian model
3-919-820-4001 : Canadian model
TABLE OF CONTENTS
Section
Title
Page
SECTION:
GENERAL
svecssctvecesveienmuideadcsiesrtnedussenies
3
SECTION 2. MECHANICAL
ADJUSTMENTS
................
4
SECTION
3. ELECTRICAL ADJUSTMENTS .................
4
SECTION
4-1.
BlOCK Diagram... sessssecsecesseseaseeeneseneseenereeneenenantaes
7
4-3.
Printed: WINING BOarG sieciscteccctcncab
ees urnsatecce
ab oashinese 13
4-4.
IC Block Diagrams .........ccccecsesecseeseeteseeeeesensecseseneseteescnees 16
SECTION
Bil.
GaSe SOCOM teivescsconsietateciunveonisisairieesnsvvicetaus
iad were auabed 17
5-2.
Front Panel Section .............ccccscccesesssrsessecneesssecseueeeussvens 18
5-3.
(DECK A: TCM-180VA-H6/DECK
B: TCM-180VB-H6) .. 19
5-4.
Mechanism Deck Section 2
5-5.
(DECK A: TCM-180VA-H6/DECK
B: TCM-180VB-H6) .. 21
SECTION 6. ELECTRICAL PARTS LIST..........00e eee 22
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.
SAFETY
CHECK-OUT
(US model only)
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
AC
ee
voltmeter
(0.75V)
=
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 SCHEMATIQUES ET LA
LISTE
DES PIECES SONT CRITIQUES POUR LA
SECURITE
DE
FONCTIONNEMENT.
NE
REMPLACER CES COMPOSANTS QUE PAR DES
PIECES
SONY
DONT
LES
NUMEROS
SONT
DONNES
DANS
CE MANUEL
OU DANS
LES
SUPPLEMENTS PUBLIES PAR SONY.
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