Tektronix 9235A Instruction Manual page 265

MANUAL CHANGE INFORMATION
Product: ___2235A SERVICE Date: _ 4-12-90 Change Reference: __M72010
DESCRIPTION Product Group 40
DIAGRAM CHANGES
DIAGRAM oy VERTICAL PREAMPS &
Change the value of resistor R448 (location 5G) to 47 9.
Change the value of resistor R449 (location 4G) to 47 ©.
DIAGRAM > VERTICAL OUTPUT AMPLIFIER
Change the value of resistor R210 (location 3B) to 430 0.
DIAGRAM <)> TRIGGER SELECT
Change the value of capacitor C350 (location 5F) to 4.7 pF.
Note: This capacitor was added at an earlier date and may not yet appear
on the schematic diagram. If not, see Change Reference M71187.
Remove capacitor C363 (location 4G) from the circuit.
Add resistor R370 (75 ) and capacitor C370 ({0pF) as shown below. Grid location is 3H.
R383
16 cRISS
78
c37o
of