Roland SDE-3000 Service Notes

EXPLODED VIEW
SDE-1000/3000
SDE-1000
7411608005
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CORRECTION
PAGE 10
MSCK, HDCK & CLOCK GENERATOR
The frequency of Clock Generator is as follows (approx):
2.7MHz at Normal 1.7MHz at TIME X1.5
2.7M-3.3MHz at MOD max. 1.7M-2M
MSCK — Clocks the internal Timing Generato MSCK
times the most of digital circuits. ^ "' i i
HDCK - The frequency of HDCK is\M^J>br 43Hz at normal mode.
Used by the CPU as a time base for calibrating Delay Time display.
The CPU fails to read switches and jacks if HDCK period is outside
7m-50ms.
Switch
KBF1O9O6(13169621)
SDE-3000 7411708005
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Roland SDE-3000 Specifications

General

Type	Digital Delay
Output Impedance	1 kOhm
Inputs	1/4" phone jack
Outputs	1/4" phone jack
Total Harmonic Distortion	0.05%
Power Supply	AC 117 V