IBM 7785 Hardware Maintenance page 187

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MAP 3000
- Measure the voltage between the GND and
+
12V dc test points on
the DRB power distribution card
.
-
Measure the voltage between the GND and +5V dc test points on
the DRB power card
.
Min V
dc
Max V
dc
4.8
5.2
11.5
12.6
•12
VDC
- - ,
+-S
VDC
- - - - - - - - -
i!
o
li
+V
L0<:\0
l-t.
q
u
o
l . _
_ _ _
_:
\'_
L
_ _ _ _
_j
Il
'ò.=
~~
....
:Q;
l
· , . . : : =
=
=
= =
==-=-J_,
000 oooooooo·.
00000000000000000000
OOOOOOOOOOOOOOOOOOOoo
.:::::oo.:::::oo.:Oooooooooooo·-··'-'0000000000000° 0000 000000000000000° 000000000000000000000 00°0000 000000000000000000000 0000ooooooooooooo·'
15 +12V dc ±10% PRESENT?
Ves
No
110041
OUND
Replace the DRB power supply and its attached power cable
(twisted-wire pair).
170
Service Bay System

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