Marantz 3650 - Alignment Procedures; Voltage Conversion Guide; System Block Diagram

4. ALIGNMENT PROCEDURES
. Setthe VOLUME control at maximum, and also BASS,
MID TREBLE and BALANCE Controls at mechanical
center position.
. Connect 47 kQ dummy load resistor to each R and L
channel on PRE OUT Jacks of the unit.
ADJUSTING POINT: Adjust voltages across J814
and the chassis to +32 V and across J810 and the
chassis to -32 V using R810.
5. VOLTAGE CONVERSION
SIGNAL
ITEM APPLICATION
CHECK OF THE PHONO, AUX,
TECHNICAL SPEC. TAPE
@EUROPEAN MODEL ONLY
This Model is equipped with a universal power transform-
er to permit operation at 110, 120, 220 and 240 V AC
50/60 Hz.
To convert the unit to the required voltage, set the plug as
illustrated so that you can adjust the voltage as required.
CAUTION
DISCONNECT POWER SUPPLY CORD FROM AC
OUTLET BEFORE CONVERTING VOLTAGE.
Figure 1. Voltage Conversion Chart
For 110V Operation For 120V Operation
Removal Procedure of P.W. Boards
1. Remove the screw 1 (002C) and
screw 2 (003C). Remove the Upper
cover
. Remove the screw 3 (011C). Remove
the bottom cover.
Remove the screw 4 (101F). Remove
the front cover (100F).
. Remove the controls 1 (0168),
Lg
For 220V Operation For 240V Operation
2 (0178), 3 (019B), 4 (020B),
5 (022B) and 6 (023B), and remove
the screw 5 (0218), nut 1 (O20F) and
bolt 1 (025B). Remove the escutch-
eon.
. Remove the screws 6 (003F), 7
(OOSF) and 8 (034F). Then the
board will be drawn out toward
you.
6. BLOCK DIAGRAM
FILTER AMP
iN
TO RIGHT
CHANNEL FROM RIGHT CHANNEL
18 dB/OCT
FILTERS
oe i gee cond to oan ae oa ema”
OUT
TAPE COPY
172
AUX
TUNER
TONE AMP
MODE
IN <-{ TONE DEFEAT OUT
— DIRECT—
1 RECORD SELECTOR 2
STEREO
—— PHONO 1—,
REVERSE
10 kHz
TUNER
X10 FLAT:
AMP
TURNOVER
100 Hz
TAPE COPY,
PHONO AMP
OUT
PHONO 1 MM/MC|
OFF
TAPE EQ
ed
INPUT SELECTOR
CARTRIDGELOAD
TAPE MON
TO RIGHT
CHANNEL
Ares
wu euy
Sxnnox
Sssne
©
©)
©
©
|
©
©
©
MM/MC PHONO 2 MM
MONITOR
IN
OUBBING IN
MONITOR OUT
MONITOR
MONITOR
OUT
PHONO 1
TUNER
AUX
TAPE 1 IN
TAPE 2 TAPE 1
TAPE 2
SCOPE
QUT