Roland RE-501 Service Manual

JULY
11,1980
RE-501
/SRE-555
RE-501
SRE-555
SERVICE ilOTCS
SPECIFICATIONS
Input Level/Impedance
Balanced:
Unbalanced:
Output
Level/Impedance
Balanced:
Unbalanced:
+ 4dBm/30kQ
0dBm/47kfi
-25dBm/220Kn
-50dBm/6.6Kfi
+ 4dBnn/600fi
OdBm/More
than 5KQ
-
25dBm/More
than
5Kli
—
50dBm/More
than 5KQ
Switch
Input-2- Level Switch
(0,
-25,
—
50dBm)
Output A-B
Level
Switch
(0,
—25,
—
50dBm).
SRE-555
Power
Consumption:
24W
Dimension:
480(W)
x
180(H)
x 450~735(D)m
Weight:
15.8/©
RE-501
Power
Consumption:
2 4W
Dimensions
:
418(W)x190(H)x
330(D)
mm
Weight:
10.5Kg
Switch
SRJ-1016
(001-305)
Knob
no.
103
(016-103)
Pot.
EVH6PAP25B15 (026-460)
Switch
SSB-02242
(001-182)
led
bar
display
TLR-401
(019-033)
Pot
.
EWKENAP25B15
(
027
-
016
)
Pot
.
EVH6PAP25
B14
(026-457)
Switch
ESB-70226
(13129113)
lOOV
ESB-70271T
(13129114)
117V
ESB-70293S
(13129115)
22O/24OV
Button no.
9
Black
(016-009)
CABIEET
DISASSEMBLY: Remove
screws
-
two
decorations
on
both
sides;
eight
4
X 25mm
truss
(
6
bottom, 2
sides).
Washer
no
.
42
(121-042)
Decoration
screw
no.
15
(123-015)
Connector
NG-3EP
or
HA16PR-3S
(010-263)
LED
TLR-124
(
019
-
028
)
Panel
no
.
299
(072-299)
Top
panel
no.
19
(086-019)
Handle
H-15
(108-004)
Screw
4
X
30
mm
black
0 .
sunk
Connector
NC-3MP
or
HA16R3P
(010-264)
Jack
HLJ-0317-
01-100
(009-052)
(seeNOTE^)
Cabinet
no
.135
(081-135)
Button
no.
85
(016-085)
Foot
Foot
G-9
G-5
(
111
-
030
)
(
111
-
021
)
Wood
screw
2.7xl6mm
3.1x2Ctam
1^
Roland
Printed
in
Japan May
'82
A-3
1
SRE-555
cont
’
d
verte
(back
side)
Switch
SSB-04303
(001-304)
Pot.
EVH6PAP25B14
(026-457)
Switch
SUE-032 A1
9
(
001
-
306
)
Button
no.
85
(016-085)
Jack
HLJ-0307-01-040
or
HLJ-1307-01-040
( countersimk
opening)
(009-053)’
Pot.
EVH6PAP25A24
(026-447)
Switch
SSB-02303(
001-205)
Pot.
EVH6PAP25B14 (026-457)
Knob no.
78
(016-078)
Switch
SIR-02239
(001-266)
«NOTE
»: Jacks
on
later
products
HLJ-1317-01-100
countersunk.
i

Roland RE-501 Specifications

General

Brand	Roland
Model	RE-501
Category	Music Equipment
Language	English

Summary

RE-501, SRE-555 Service Notes

Specifications

Details input/output levels, impedance, power consumption, dimensions, and weight for RE-501/SRE-555.

Cabinet Disassembly

Arm Unit

Block Diagram

RE-501/SRE-555 Main Circuit Diagram

Adjustment and Checking

Mechanical Adjustments

Details procedures for physical adjustments like tape chassis position, height, and pinch roller pressure.

Electrical Adjustments

Covers various electrical calibration steps, including bias, playback, and head alignment.

Bias Leakage Trap

Motor Speed

Head Alignment Procedures

Tangency

Ensures head core faces are simultaneously tangent to the tape to the same degree.

Height

Centers gap-width dimension on the same track location.

Azimuth

Aligns head gap precisely 90-degrees to the tape edge.

Tilt

Ensures tape contacts head surface precisely in parallel.

Playback Heads Adjustments

Playback Head Sensitivity

Playback Equalizer

Recording Adjustments

Recording Bias

BBD Bias (Chorus)

Expander and Echo Adjustments

Expander

Echo Intensity