Tektronix 7B53A, Instruction Manual

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7B53A/7B53AN OPTION 5
PARTS LIST
The following changes should be made to the appropriate parts list for this modified instrument. When ordering
replacement parts specify instrument type, serial number, and mod number. Include the circuit number, part number, and
description of the desired item.
*Parts identified by an asterisk are unique to this modified product and are not normally stocked.
Electrical Parts List
Capacitors
C900
Add 283-0092-00 0.03 µf cer 200 V +80% -20%
C904 Add 290-0517-00 6.8 µf emt 35 V
C908
Add 281-0550-00
120 pf
cer 500 V 10%
C920 Add 283-0092-00 0.03 µf
cer
200 V
+80%-20%
C924
Add 281-0511-00
22 pf
cer 500 V
10%
C926 Add 281-0605-00 200 pf cer 500 V
C929 Add 283-0010-00 0.05 µf cer 50 V
C932
Add 283-0092-00
0.03 µf
cer
200 V
+80% -20%
Diodes
CR908 Add 152-0075-00 Germanium Tek Spec
CR909 Add 152-0141-02 Silicon 1N4152
CR912
Add 152-0141-02 Silicon 1N4152
CR913
Add 152-0141-02 Silicon 1N4152
CR916
Add 152-0195-00 Zener 1N751A 0.4 W, 5.1 V,5%
CR917 Add 152-0075-00 Germanium Tek Spec
CR918 Add 152-0141-02 Silicon 1N4152
CR920
Add
152-0195-00 Zener 1N751A 0.4 W, 5.1 V, 5%
CR921
Add
152-0075-00
Germanium Tek Spec
CR932 Add 152-0075-00 Germanium Tek Spec
Transistors
Q904 Add 151-0188-00 Silicon 2N3906
Q908 Add
151-0188-00 Silicon 2N3906
Q920 Add 151-0192-00 Silicon Replaceable by MPS-6521
Q924
Add 151-0192-00
Silicon Replaceable by MPS-6521
Q932 Add 151-0188-01 Silicon Replaceable by 2N3251
Resistors
R900 Add 315-0221-00 220 Ω 1/4 W
5%
R904
Add 315-0563-00 56 k 1/4 W 5%
R905 Add 315-0471-00 470 Ω 1/4 W
5%
R907 Add
315-0681-00
680 Ω 1/4 W
5%
R908
Add 315-0203-00 20 k 1/4 W
5%
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