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With
A
Display
Reading Of
•4''
(Test
4
Failure),
Mea-
sure
The
Switch
Drive
Voltage
On
Pin
14
Of
A10U4.
Check
A10U9 And
Assoc-
iated
Components.
Check
A10U5 And
Associ-
ated
Components.
Troubleshoot
The
Gate
Troubleshoot
The
Gate
Bias
Amplitier
Circuit
Bias
Ampliliei
Cucuit
(A10U1.
OB And
Associ-
(A10U1,
QB And
Associ-
ated
Components).
ated
Components).
1
'
V
Troubleshoot
The
Logic
^XThe
Device
Seleci\,^
Troubleshoot
The
Logic
Circuit
(A10U13.
U22.
^^Signa^t
Pi
n
9 Of
^ES
^
Circuit
(A10U16.
U22,
U2€ And
Associated
Com-
1
A10U16>4V
•
U26 And
Associated
Com-
poncnts).
^sPeak-To-Peak/'''^
ponents).
3455-D-a
Troubleshoot
The
Device
Select
Circuit
<A10U13.
U14.
U2€
And
Associ-
ated
Components).
NO
Troubleshoot
The
Device
Select
Circuit
(A10U16.
U14.
U26
And
Associ-
I
aied
Components).
Figure 8-H-I2.
inguard Troubleshooting Procedure Diagram,
Auto-Cal
Circuitry
TEST
4.
8
-
101
/ 8-102
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