Roland TD-7 Service Notes

CHANGE
INFORMATION
Change
History of Main
Board/
^
^
TD-7
Nov.
1992
pcb No.
22935352_00
22935352_01
22935352_02
Serial
No.
ZE20100-ZE33749
ZE43750-ZEm*1:
ZEm**-
L29
—
12449401
BLM41A04
(chip
beads)
12449445
L30,
31
—
ACB3216M-600-B
(chip beads)
15399945
15399945
R110
MCR
100-1
01
J
MCR
100-101J
(chip R
1W)
(chip
R
1W)
solder
side
component side
1 374981 3T0
15399413
R111
SR50TR
4.7K
RPC10T4.7KJ
(R 1/4W)
(chip R 1/10W)
R2,
3,14,15,20,
21,35,54,
60
15399301
RPCIOTOohm
(chip)
--
Change
History of Analog Board/
MM®
pcb
No.
Serial
No.
22935353_00
ZE20100-ZE22049
22935353_01
ZE32050-ZE33749
22935353_02
ZE43750-
12449326
12449460
L202,
203,
206
SBT-0460
EXC-ELDR25C
(SBT coil)
beads inductor
12449460
L209, 210,212,
EXC-ELDR25C
—
215
beads inductor
NOTE
I
All
of the
above changes
have been already
made.
Change
History of ROM
Version
Up/
v
a
y7
"j
Serial
No.
ZE20100-ZE22049
ZE32050-ZE33749
ZE43750-
ROM(ICI)
VerNo.
Ver. 1 .03
Ver. 1.04
Ver. 1 .05
©
Cange
History of Main Board
PCB No. 22935352 00 PCB No.
22935352_00
I
Serial
number applied
I
SNO.ZE20100-ZE33749
\wmm\
SNO.ZE20100-ZE33749
(Contents of
change
I
•
A wiring
pattern was cut. (See Fig.1)
•
A
jumper wire was added. (See Fig.
1)
•
A
part was added.
R1114.7KQ (See Fig.
1)
R110
1W100
Q
(Chip) (See Fig.2)
(Service respons^
These changes have been made for all products. There
is no
need
for
additional service
response.
,
—
yfj
y
|>
^gjj
^
•
((K 1 #M)
•
mshmu
R1114.7KQ
(SIl#jl)
RllO IWlOOQ
(Chip)
(B(2#M)
(it-
Pattern
Cut
Jamper
Wire(JPW01
)
MAIN
BOARD(pcb
No.22935352_00)
R1 10
added(iiin)
Pattern
Cut
16
Fig.2.
(^2)

Roland TD-7 Specifications

General

Display	LCD
MIDI	In, Out, Thru
Effects	Reverb
Sequencer	Yes
Outputs	Stereo output, headphone output
Presets	50 preset kits
Power Supply	AC Adaptor