JVC DD-9 A User Manual

DD-9A/B/C/E/J/U |
Contents
Page
Features sy hn ge west OEE end ES ena nad we alee % 2
Specifications: ~f sadeiaclha woe aeons ba eee es 3
Controls and Connections ...........2 002 ee eee 4
Main Parts Location ........-.. 00000 eee eee 5
Maintenance ..... 2.0... 0. eee ee ee eee 5
Description on New Technology ..............0- 6
Removal of the Main Parts ................0005 8
Main Adjustments. .........0 0.000 ee ee ee eee 9
Block Diagram (1) 2.0.0.0... 2. cee eee ee eee 17
Block Diagram (2) 1... 0... ee es 18
Wiring Connection (1) ..............2222000- 19
Wiring Connection (2) .............0000 tees 20
Wiring Connection (3)... 0.2.0.0... 0 eee ee eee 21
Standard Voltage Value ............0000 eee 22
Integrant Circuits... ee ee ee 23
Standard Schematic Diagram (Main Amp. Circuit) ... 25
Standard Schametic Diagram (Computer Circuit) .... 26
Standard Schematic Diagram (Mecha. Control Circuit). 27
Features
= 2-motor full-logic mechanism with quartz-locked pulse-
servo D.D. motor
© A quartz-locked pulse-servo D.D. motor newly
developed for capstan drive and a DC motor for reel
drive
© Low wow/flutter (WRMS 0.019%)
© TIMER STANDBY mechanism (with maloperation
protection)
© AUTO-REWIND mechanism
© Remote control terminal provided (R-50E optional)
@ Built-in computer B.E.S.T. tuning system for automatic
adjustment of Bias, Equalization and Sensitivity of tape
= Metal tape compatible
® Three-head system permitting monitoring while record-
ing is being made
© X-cut SA (Sen-Alloy) combination record/playback
head
© 2-gap SA erase head
No. 4198
Page
Standard Schematic Diagram
(Fl Circuit, DD Motor Circuit) ..........00.0. 28
Enclosure Assembly and Electrical Parts .......... 29
Mechanical Component Parts ............2200% 30
Enclosure Assembly and Electrical Parts List ....... 31
Mechanical Component Parts List .............. 34
Main Amp. P.W. Board Parts List............... 36
Main Amp. P.W. Board Parts. ...........000005 39
Computer P.W. Board Parts ..........-..00005 40
Computer P.W. Board Parts List ............... 41
Mecha. Control P.W. Board Parts, Parts List........ 44
Display P.W. Board Parts, Parts List ............. 46
DD Motor Circuit Parts List ............ 2.00004 47
Other P.W. Board Parts ... 0.0... 0000 eee eee 48
Other P.W. Board Parts List ..............200. 49
Packing, Packing Material Parts List ........ Back cover
ACCESSOFIES: eh -8 5S 5, Be RES eS Back cover
® 2-color FL digital meter (PEAK/VU selectable) with
peak hold function
® DC configured record/playback amplifier
™ Electronic control for recording level adjustment
= Equipped with ANRS/DOLBY B and DOLBY C NR
moise reduction systems.
@ Timer standby capability for automatic recording or
playback using an AC timer
® Headphones in connection with slide system output
level control
m Record muting (REC MUTE) mechanism (with operation
indicator LED)
® New slim design with push button switches

JVC DD-9 A Specifications

General

Brand	JVC
Model	DD-9 A
Category	Cassette Player
Language	English