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HP 214B - Page 124

HP 214B
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A2
TIMING
BOARD
100214-665591
EXT.
INPUT
CIRCUITS
i
RAME
--
--ll
."
I
MAN
NEG
POS
~2
)
"-=:.:......:.~==~-----,
IINORMI
Sla
I L S 0
6
I
!MAN!
8 I
-5V
OR TROUBLESHOOTING REMOVE WIRE 927
ROM
POWER
SUPPLY BOARD AND SWITCH
UTPUT POLARITY TO NEG
~----o-----o--
____
--<>--____ _
------9-9-_
___
I
0e---
t5V
Cl
6.8p
Rl
4.JK
-5.2V
t15V~~-------~
__
~
7-~
01a
R4
3.83K
C7
I'"
R6
51.1
+9.7 V
N
'"
+5V
R271
lK
---l
R15
I
10K.
I
TRIGGER
I
LEVEL
I
PANEL
I
FRONT
I
___
--1
-15V~~-
___
~
__
~
__
~
_________
~~
____
~
__
N
+15V
M
N
'"
...
N
'"
I
EXT.
TRIGGER I
t15V
+5V
IGATE
I
,~2
SIc
~5
t5V
VRI
9.09V
tSV
+ 9.5V
17
018
SIb
15
024
R90
487
+9.SV
L 1
4.7
+9.5V
022
+15V
TP2
--...;_0_6~0
e IT]
TIMING
ERROR
ENABLE
ClIO
+15V
025
RJJ
102K
011
Cl0
100pF
t9.5V
Pia
TIMING
BOARD A2
8-27
Scans by ArtekMedia => 2009

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