Tektronix 7613 User Manual

Maintenance —7613/R7613 Service
Compesition Resistors:
Ceramic Capacitors:
Q) @) and G) —ist, 2nd and 3rd significant figures;
@) oo multiplier; @ —tolerance;
Resistor and Capacitor Color Code
Signifi- Multiplier Tolerance
cant Resis- |Capaci-| Resis- Capaci-
Color Figures | tors tors tors tors
Silver wo 10-7 --- +10% oo
Gold aoe 10-7 — +5% “+
Black 0 ] ] wee 20% or
2 pF*
Brown 1 10 10 IG 1% or
0.1 pF*
Red 2 10? 10? 2% h2%
Orange 3 10 it +3% 3%
Yellow 4 10? 10# 4% +100%
om %,
Green 5 10° 10° +0.5% | +5% or
0.5 pF*
Blue 6 10° 10° --- “ss
Violet 7 --- --- --- wae
Gray 8 --- 10-2 --- 480%
— 20%
or 0.25 pF*
White 9 --- 1077 --- 10% or
1 pF*
(none} nee =~ --- +20% | +10% or
1 pF*
@ and/or
manufacturer and capacitor type. May not be present in some cases.
-~jemperature coefficient. NOTE:
*For capacitance of 10 pF or less.
color code for capacitors depends upon
Fig. 4-4. Color code for resistors and ceramic capacitors.
Purpose: To test the semiconductors used in this
instrument.
2. Multimeters
Description: Digital voltmeter, 10 megohm input
impedance and 0 to 500 volts range; ohmmeter, 0 to 2
megohms. Accuracy, within 1%. Test probes must be
insulated to prevent accidental shorting.
Purpose: To check voltages and for general trouble-
shooting in this instrument.
NOTE
A 20,000 ohms/volt VOM can be used to check the
voltages in this instrument if allowances are made for
the circuit loading of the VOM at high-impedance
points,
3. Test Oscilloscope
Description: Frequency response, DC to 50 megahertz;
deflection factor, 50 volts/division. A 10X probe should be
used to reduce circuit loading.
46
Purpose: To check operating waveforms in this
instrument.
Troubleshooting Techniques
This troubleshooting procedure is arranged in an order
which checks the simple trouble possibilities before
proceeding with extensive troubleshooting. The first few
checks assure proper connection, operation, and calibra-
tion. If the trouble is not located by these checks, the
remaining steps aid in locating the defective component.
When the defective component is located, it should be
replaced following the replacement procedures given under
corrective maintenance.
1. Check Control Settings. Incorrect control settings
can indicate a trouble that does not exist. If there is any
question about the correct function or operation of any
control, see the Operating Instructions section.
2. Check Associated Equipment. Before proceeding
with troubleshooting of the 7613, check that the equip-
ment used with this instrument is operating correctly.
7613

Tektronix 7613 Specifications

General

Brand	Tektronix
Model	7613
Category	Test Equipment
Language	English