Jvc TT 101 Service Manual

Page 2

Contents

1. Specifications ........................................................ 2
2.-Features ............................................................ 3
3. New Technical Information
3-(1) Block Diagram ................................................. 4
3-(2) Crystal Oscillation Frequency Divider and 1H2 Indicator ..................... 5
343) Time Base Generator Circuit ........................................ 7
3-(4) Count Circuit .................................................. 8
3-(5) Reverse Turn Detection ........................................... 12
3-16) N-time Counter ................................................ 13
3-(7) Timer ....................................................... 17
3-18) FM Demodulator and Phase Comparator ................................ 17
3-(9) Drive Start Circuit .............................................. 19
3-(10) Motor Power Switch ............................................. 19
3-(11) Speed Selection Circuit ........................................... 20
4. Disassembly .......................................................... 20
5. Adjustment Procedures
5-(1l Adjustment of TPS41B Power Supply P.C. Board ......................... 21
512) Motor Adjustment (TAS-1ZB) ....................................... 21
5(3) N-time Counter Adjustment ........................................ 22
5-(4) TDC-7 Oscillation Frequency Adjustment ............................... 22
5-(5) Rotation Adjustment ............................................ 22
6. Connection Diagram
6-11) Ground Connection ............................................. 23
6-(2) P.C. Board Ass'y Connection ....................................... 24
7. Lubrication .......................................................... 24
8. Troubleshootings ...................................................... 25
9. Exploded Views and Part Numbers ........................................... 28
10. Printed Circuit Board Ass'y and Parts List
10-(1) TDC-7B Crystal P.C. Board Ass'y ..................................... 31
10-(2) TDC-8B LED Speed Counter P.C. Board Ass'y ............................ 34
10-(3) TDC-QB LED Indication P.C. Board Ass'y ............................... 35
10-(4) TDC-1OB Frequency Divider P.C. Board Ass'y ............................ 36
10(5) TAS-1ZB Servo Control P.C. Board Ass'y ............................... 37
10-(6) TPS-41B Power Supply P.C. Board Ass'y ................................ 47
10-17) TSC-77ACFuseP.C.BoardAssy..........................-. ......... 49
11. Accessories List ....................................................... 50
12. Packing Materials and Part Numbers .......................................... 50
13. TT-101 Schematic Diagram ................................................ 51
14. Transistor, Diode and LC. Lead Identification ................................... 53
15. Parts List with Specified Numbers for Designated Areas ............................. 54
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TT-101
No. 2391

Page 54

15. Parts List with Specified Numers for
Designated Areas

Table 1
For U.K. For PACEX
and and Other
Item No. Parts Name For U.S.A. For Europe Australia Countries
3 Cord Stopper QHS3876-162 0H83876-162 0H33876-162 0H83876-162
10 Fuse QMF61U1-1RO OMF51A2-R80 OMF51A2-R80 QMF61U1-1RO
(For AC 100 V &
AC 120 V)
OM F61 U2-R80
(For AC 220 V &
AC 240 V)
11 Power Cord QMP1200-244 503544-001 QMP9017-007 QMP1200-244
(U.K.)
QMP3800-240 QMP2500-200
(Switzerland) (Australia)
86 Circuit Board Ass'y TSC-77A TSCo77C TSC-77C TSC-77B
Table 2
U.K. PACEX
and and Other
Item No. Parts Name U.S.A. Europe Australia Countries
Instruction E30580-567A E30580-567A E30580-567A E30580-567A
E30580-568A
E30580-569A
Warranty Card BT20020C Not enclosed BT20013 BT20014
(U.K.)
BT20029
(Australia)
TT-101
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