Tektronix 2230 Service Manual

Section 6—2230 Service
MAINTENANCE
This section contains information for conducting preventive maintenance, troubleshooting, and corrective maintenance on
the instrument. Circuit board removal procedures are included in the corrective maintenance part of this section.
STATIC-SENSITIVE COMPONENTS
The following precautions are applicable when perform
ing any maintenance involving internal access to the
instrument.
Static discharge can damage any semiconductor
component in this instrument.
This instrument contains electrical components that are
susceptible to damage from static discharge. Table 6-1
lists the relative susceptibility of various classes of sem
iconductors. Static voltages of 1 kV to 30 kV are common
in unprotected environments.
When performing maintenance, observe the following
precautions to avoid component damage:
1. Minimize handling of static-sensitive components.
2. Transport and store static-sensitive components or
assemblies in their original containers or on a metal rail.
Label any package that contains static-sensitive com
ponents or assemblies.
3. Discharge the static voltage from your body by
wearing a grounded antistatic wrist strap while handling
these components. Servicing static-sensitive components
or assemblies should be performed only at a static-free
work station by qualified service personnel.
4. Nothing capable of generating or holding a static
charge should be allowed on the work station surface.
5. Keep the component leads shorted together when
ever possible.
6. Pick up components by their bodies, never by their
leads.
Table 6-1
Relative Susceptibility to
Static-Discharge Damage
Semiconductor Classes
Relative
Susceptibility
Levels'
MOS or CMOS microcircuits or
discretes, or linear microcircuits
with MOS inputs (Most Sensitive)
1
ECL
2
Schottky signal diodes
3
Schottky TTL
4
High-frequency bipolar transistors
5
JFETs
6
Linear microcircuits 7
Low-power Schottky TTL 8
TTL (Least Sensitive)
9
'Voltage equivalent for levels (voltage discharged from a
100 pF capacitor through a resistance of 100 ohms):
1 - 100 to 500 V 4 - 500 V 7 = 400 to 1000 V (est)
2 - 200 to 500 V 5 = 400 to 600 V 8 = 900 V
3 - 250 V 6 = 600 to 800 V 9 = 1200 V
6-1

Tektronix 2230 Specifications

General

Brand	Tektronix
Model	2230
Category	Test Equipment
Language	English