GENERA GENERALMUSIC LMUSIC S.p.A. Sales Sales Division: 47048 S.Giovanni S.Giovanni in Marignano (RN) ITALY - Via delle Rose, 12 - tel. 0541 / 959 511 - tlx 55055 5 GMUSIC I - fax 0541/ 957 404
SERVICE MANUAL Schematic Diagrams
Notice
Service must be carried out by qualified personnel only.Any tampering carried out by unqualified personnel during the guarantee period will forfeit the right to guarantee. For a correct operation of the instrument, after having switched off, be careful to wait at least 3 seconds before switching on again. To improve the device's specifications, the schematic diagrams may be subject to change without prior notice.
Schematic Schematic Notes
All components marked by this symbol have special safety characteristics, characteristics, when replacing any of these components use only manufacturer's specified parts. The (µ) micro symbol of capacitance value is substituted by U. The (Ω) omega symbol of resistance value is substituted by E. The electrolytic capacitors are 25Vdc rated voltage unless otherwise specified. All resistors are 1/8W unless otherwise specified.
Opening Instructions refer to fig. 1 To open the instrument remove the screws marked by
Fig. 1
To separate the keyboard from chassis remove the screws marked by K (open the instrument before proceed) To access to the Disk Drive remove the screws marked by D
K D
D
D
D
K
Keyboard Disassembling Instructions
K
K
K
K
K
K
K
K
K
K
Keyboard Exploded View
Sharp Key
Key Return Spring
Remove the key return spring Natural Key
2 3
Keyboard Base 1 Dual Contact Rubber Strip Contact board
Left Mylar Strip
Dial Encoder
Lcd Diplay
Right Mylar Strip
Pitch Board
Right Tweeter
Left Tweeter Right Woofer Left Woofer Top Chassis Control Board DC/AC Converter Board
Transformer Ass’y
A . C .
Bottom Chassis
A . C .
A.C. Filter Board C O N N . 2
Transformer
A . C .
A . C .
Contrast Adjustment
Main Switch Phone Board After Touch Adjustment
Power Amplifier & Supply Board
CPU & Sound Generator Board
Keyboard Assembly
Control & MIDI I/O Board
Floppy Disk Driver
. ) T U O Y A L B C P ( D R A O B E C A F R E T N I D R A O B Y E K
