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TS530S.1
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1990-10-14
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854b
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SB-848
TS-530S Low Voltage Supply Optional Improvements 7-30-81
Power supply drift and stability may be improved by these optional
component changes and additions.
On the AF AVR unit X49-1150-00 (Vicinity of Q19,Q20) change:
R68 from 1K to 1.5K (RD14CB2E152J)*
R72 from 470 to 390 (RD14CB2E391J)*
D14 from WZ-061 to XZ-053 (V11-4101-60)*
*This will improve temperature drift from a maximum of about 100mV to a
maximum of 1mV, and may be applied to any unit before serial # 201xxxx.
Add two 22 k ohm 1/4 resistors (RD14CB2E223J0, one each across Q19, and
Q20, collector to emitter.#
#This will improve overall stability and may be applied to any unit before
serial #201xxxx.
Note: These changes are at the owners option and may not be performed in-
warranty.
JEB/sh
(c) 041482TKC