Bang Olufsen Beomaster 1701 Service Manual

Page 1

Page 2

Bang&0|ufsen 1-1

1 PC Boards PC Drawings are seen from copperfoil side

Tone Control, 8002374. P013

I
rear.

2

0 V

CONTENTS Section

Circuit diagrams and PC boards .................................... l
Sun'ey of transistors, ICs and rlindes ............................... 2
Electrical parts list ..............................................
Mechanical parts list ..........
Adjustment ...................
Functional desctription .......... , .
Technical data ..................................................
Dismantle ...................................................
Service tips ....................................................

7 777 Power Supply, 8002387. PC2Z

M ICASI'RING CONDITIONS All voltages are measured relative to ground with voltmeterfinner
resistance 10 Mohmsl.
Voltages are measured Without signal in posotion FM,
Signal paths are shown for AM (position LW}. IM. and for AF right
channel.
Mechanical switches are shown in neutral position.

CO-ORDINATE NUMBERS

The biggest PC boards are prmfidcd woth co-ordinate system. The

components on these PC boards are provided with a co-ordinate

number on the diagram (smaller printing type than the position i

' numbers) indicating in which co-nrdinate they are placed on the PC l fl T
board. lzzen um i ILL! link?
l. l
I l
\\ Inlml for safety resistors When replacing components with this symbol use the same two and ii l'
. the same values for ohms and watts. The new components is to be
& mounted in the same way as the replaced.