Revox B261

sruotrR
neVox
8261
SA
TABLE OF CONTENTS
I. GENERAL
1.1 Index
to tuner
controls
1.1.1
Front-panel controls
1.2 Connector
panel
1.3
Recommended
test
equipment
and
alignment
tools
T/L
T/L
L/3
L/3
2.
DTSIqANTLING INSTRUCTIONS
2.I Removing
the
top
cover
2.2 Removing the
bottom cover
2.3 Removing the side
covers
2.4 Removing the
front
panel
2.5 Removing the
operating
panel
2.6
Replacing
the
meter illumination
lamps
2.7 Removing the
indicating instruments
2.7 .I
Meters
2.1 .2
Display
PCB
2.8 Replaclng the
indicating LEDs
2.9
Removing
the
contact
pad
and the
keyboard PCB
2.I0 Replacing the
fuses
2.10.1 AC
power
fuse
2.l-0.2
Power supply
fuses
2.\L Removing the
power
supply
2.I2 Removing the
power
supply PCB
2.13 Reassembly
2/r
2/r
2/r
) /1
2/r
2/2
')
/)
2/2
2/2
2/2
2/2
2/2
2/2
a /1
2/3
) /'..
3.
CIRCUIT DESCRIPTION
3.1 Power
supply
I.726.720
3 .
1. l- Transformer
3.I.2
Power
supply
PCB
3.2 RF input section
3.2.I RF amplifier
I.726.'730
3.2.2
Antenna
switch
3.2.3 Synthesizer and local oscillator
I.726.770
3.3 IF amplifier
L.726.'740
3.4
Demodulator I.126.750
3.5
Stereo decoder I.726.160
3.6 Audio section
3 . 6. 1 Aud
j-o
PcB I
.726
.820/B2I
3
-6
-2
Phones PCB I
-'726
-860
3.7
Microcomputer unit
3.
B Command
unit
3.8.
I Keyboard
3.8.2
D
j.splay,
meters
3 .
8.
3 Level control
3.8.4 Remote control receiver
3/r
3/r
3/r
3/2
3/2
3/2
3/2
3/3
3/3
3/4
3/5
3/5
3/5
3/s
3/6
3/6
3/e
3/e
3/6