Jvc TDV 66 Service Manual

Page 1

SERVICE MANUAL

STEREO CASSETTE DECK

MODEL TD'V66 A/B/C/E/G/J/U

Basic Mechanism

KD-V4

Pagp
Safety Pgecaut ow . . ...... . . ........ 2 LA,x/af101\\)fr;.c B'
Specwficatmvs ............. . _ . , , 3 Dismay Board
Lacahms (sf Mam Parr: . , . . .......... 4 Mam Bnard 9315 L wt , . ................ 13
Adiustmems , . , . . ........ V 5 Main Board Part: . , . E . . 15
Standard Schmmuf Diagmn. wauded Vwa 0? Em ....... 16
Dispian/ C T T ..... 7 Enclosure Partfi L151 . T ..... vs. , . . . v .4 17
Ampflflel 4 cm! . . _ . . . T ....... 8 Expmded Maw 01' Mechamsm Assembly .......... 18
Mechanism Conhol Chum _ , . . . . , 9 Mechamsm Parts List .: .......... . . . . . 19
Wiring Connertms ...................... 10 Packing ano Parts LG? ................... 20
Accessories ..... , . . ................. 20

No.4270
April 1986

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TD-V66A/B/C/E/G/J/U

1

1.

Safety precautions

The design of this product wntains special hardware.
Many circuits and components specially for safety
purposes.

For continued protection, no changes should be made
to the original design unless authorized in writing by
the manufacturer. Replacement parts must be identical
to those used in the original circuits. Service should be
performed by qualified personnel only.

. Alterations of the design or circuitry of the product

should not be made. Any design alterations or additions
will void the manufacturer's warranty and will further
relieve the manufacturer of responsibility for personal
injury or property damage resulting therefrom.

. Many electrical and mechanical parts in the product

have special safety-related characteristics. These charac-
teristics are often not evident from visual inspection
nor can the protection afforded by them necessarily
be obtained by using replacement components rated for
higher voltage, wattage, etc. Replacement parts which
have these special safety characteristics are identified in
the parts list of Service manual. Electrical components
having such features are identified by A on the
schematics and parts list in Service manual.

The use of a substitute replacement which does
not have the same safety characteristics as the recom-
mended replacement part shown in the parts list in
Service manual may create shock, fire, or other hazards.

. The leads in the products are routed and dressed with

ties, clamps, mbings, barriers and/or the like to be
separated from live parts, high temperature parts, mow
ing parts and/or sharp edges for the prevention of
electric shock and fire hazard.

When service is required, the original lead routing and
dress should be observed, and they should be confirmed
to be returned to normal, after re-assembling.

2 (N0. 4270)

5. Leakage current check

(Safety for electrical shock hazard)

After re-assembling the product, always perform an

isolation check on the exposed metal parts of the

Products (antenna terminals, knobs, metal cabinet,

screw heads, earphone jack, control shafts, etc.) to be

sure the product is safe to operate without danger of

electrical shock.

Do not use a line isolation transformer during this check.

0 Plug the AC line cord directly into the AC outlet.
Using a "Leakage Current Tester, measure the
leakage current from each exposed metal part of the
cabinet, particularly any exposed metal part havinga
return path to the chassis, to a known good earth
ground (water pipe, etc) Any leakage current must
not exceed 0.5 mA AC (r.m.s.).

0 Alternate check method.
Plug the AC line.cord directly into the AC outlet.
Use an AC voltmeter having 1,000 ohms per volt
or more sensitivity in the following manner. Con-
nect a 1500 SI 10 W resistor paralleled by a 0.15 uF
AC-type capacitor between an exposed metal part
and a known good earth ground (water pipe, etc.).
Measure the AC voltage across the resistor with the
AC voltmeter.
Move the resistor connection to each expoosed metal
part, particularly any exposed metal part having a
return path to the chassis, and measure the AC
voltage across the resistor. Now, reverse the plug in
the AC outlet and repeat each measurement. Any
voltage measured must not exceed 0.75 V AC lr.m.s.|.
This corresponds to 0.5 mA AC (r.m.s,).

AC VOLTMETER
(HAVING 100mm,
05 MORE $EN$lTIVlTV)

CD

3 C

015,; AC-TVPE
_' I-

-'w»--
|500I1 lOW

PLACE THIS PROBE
ON EACH EXPOSED
METAL PART
GOOD EARTH GROUND

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TD-V66A/B/C/E/G/J/U

A Parts are safety assurance parts
When replacing those parts. make sure to use the specified one.

A REP PARTS No~ PARTS NAME REMARKS QTY
55 VKH4418-001 COLLAR DOOR SAFETY 1
1 56 VKw3006-061 TORSION SPRING DOOR SAFETY 1
57 VKv4279-OO1 PACK SPRING 1
58 VSH112A-002 LEAF SWITCH 4
-* 59 VKSASIZ-ooz GUIDE 1
61 VK23111-OOA SMITCH CAM SVITCH ASS'Y 1
64 903093-834 WASHER P.ROLLER CAM 1
67 WN826OON WASHER CAM SMITCH 1
774763 1;;{9412ET WASfiER CA§§£TTEA§gJDE 2
81 REE2ooo E.RING P.ROLLER CAM 1
82 REE25oo E.RING PINCH ROLLER 1
83 SDST26OSZ SCREw GUID POST 1
SDST26osz SCREV C.METAL/TENSION 6
_447 ,,SD§I2§9§Z AggREw LEAF SWITCH 4
SDST26052 SCREM VIRE HOLDER 1
84 SDST2608Z SCREw D.BASE UNIT 1
- 85 SDST26122 SCREV D.BASE UNIT 1
86 SOST26osz SCREw DOOR SAFETY 1
1,,EI, SDSTZEQEZ SCREW, [EMEEBAEEET 3
as DRSP26082 SCREV REEL MOTOR 1
DPSP2608Z SCREw CAM/REEL MOTOR 1
89 SPSP26132 SCREw REEL MOTOR 1
90 SPSP26152 SCREM CAM MOTOR 1
7 9; iSSSPZOOAZ SCREV CAPSTAN MOTOR 3
94 VKF4110-001 E.HEAD LEVER 1
95 VKH300l-O41 FLANGE COLLAR 1
96 VKw3002-138 TENSION SPRING 1
97 VK24001-OO7 WIRE HOLDER 1
9347 VK§4536-002 HEAD COLLAR 1
99 VKw3001-O94 SPRING 1
101 VKZ3110-001 HEAD COVER 1
102 VKS4598-OOA TENSION HOLDER TENSION 1
103 SDST26042 SCREw PACK SPRING 2
IILlQREu,E§§§l2§Q§ZL,EIHW SCREW_W 7 F M BRACKET 1
105 VKH4411-OOI AZIMATH SCREw 1
106 SPSX2010N SCREw 1
107 LPSP2004Z SCREM HEAD COVER 2
108 $DST26062 SCREM CASSETTE GUIDE 4
4,7193 LPSngosz SCREw A, E.HEAD 17
110 VKH4874-001 COLLAR (R) E.HEAD 1

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20(No.427m