HP 7901A Operating And Service Manual page 66

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Figure 5-21. Servo Amplifier/Regulator PC Assembly A4, Parts Location Diagram
DISC DRIVE POWER SUPPLY
(PARTS ARE CHASSIS MOUNTED)
FL1
LINE
DS1
POWER SWITCH
AND
INDICATQR
S1
IPOWERI
0
{~ C
P 0
~ ;~~;tt::P
0
!
: I I I
AC POWER TO Ace g : 90
DISC DRIVE : J r N D 5 •
~
__
~
5
TO ,RONT PANEL 54
!
GROUND LUG ~
TB2
LOGIC GROUND BUS
.&
TERMINAL BOARD TBl SHOWN CONNECTED FOR 110 VAC OPERATION.
FOLLOWING CONNECTIONS REQUIRED FOR INPUT AC VOLTAGES.
INPUT VOLTAGE 110VAC 120VAC
200 VAC 240VAC
LINE {WHTfBLKfRED
TBI-5 TBH T81-5 T81-5
CONNECTIONS ORANGE T81-6 TBI-6 T81-6
T8H)
JUMPERS
T81-4 TO T81-5 T81-1 TO T81-2 T81-3 TO T81-4 T81-2 TO T81-3
T81-6 TO T81-7 T81-6 TO T81-7 T81-7 TO TB1-8
TB1-7 TO T81-8
240VAC
T81-1
TB1-6
r
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I
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f-
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T81-2 TO T81-3
T81-7 TO T81-8