Keithley 2700 Service Manual

6-8 Replaceable Parts
U182 IC, RETRIG., MULTIVIB, 74HC123AM IC-788
U187 IC, MICROPROCESSOR RESET MAX809LEURT IC-1297
U188,U189 IC, PROTECTED QUAD POWER DRIVERS IC-1212
U191 IC, TINYLOGIC CMOS INVERTER IC-1282
U192 IC, 2 - INPUT AND GATE IC-1140
VR102 DIODE, ZENER, 6.0V, BZX84B6V2 DZ-87
VR103,VR104 DIODE, ZENER, 6.8V, MMSZ5235BT1 DZ-100
VR105,VR106,VR124,VR125 DIODE, ZENER, 11V, MMSZ11T1 DZ-103
VR107,VR108,VR122,VR123 DIODE, ZENER, 3.3V, MMBZ5226BL DZ-94
VR109 DIODE, ZENER, 17V, MMBZ5247BL DZ-104
VR110 DIODE, ZENER, 5.1V, BZX84C5V1 DZ-88
VR112,VR113 DIODE, ZENER, 6.2V, MMSZ6V2 DZ-97
VR119,VR120 DIODE, ZENER, 12V, MMSZ12T1 DZ-112
Y101 CRYSTAL CR-55-1
Y102 OSCILLATOR HIGH SPEED CMOS, 12MHZ CR-37
Y103 CRYSTAL, FSM327 CR-41
*Order current firmware revision, for example: A02.
Table 6-2
Model 2700 display board parts list
Circuit Designation Description Keithley Part No.
C401,C402,C411 CAP, 0.1UF, 20%, 50V, CERAMIC C-418-.1
C403,C404,C405,C407,C409,C410,C412 CAP, 0.1UF, 10%, 25V, CERAMIC C-495-.1
C406,C408 CAP, 33PF, 10%, 100V, CERAMIC C-451-33P
C413 CAP, 22UF, 20%, 6.3 TANTALUM C-417-22
C414 CAP, 47PF, 10%, 100V, CERAMIC C-451-47P
CR401,CR402 DIODE, MBR0520LT1 RF-103
DS401 DISPLAY DD-61
P1014 CABLE ASSEMBLY CA-123-16A
R401-404,406,409,411,414-418 RES, 15K, 1%, 100MW, THICK FILM R-418-15K
R405,R408,R410,R412 RES, 12.1, 1%, 125MW, METAL FILM R-391-12.1
R413 RES, 13K, 1%, 100MW, THICK FILM R-418-13K
R419 RES, 10M, 5%, 125MW, METAL FILM R-375-10M
R420,R421 RES, 10K, 1%, 100MW, THICK FILM R-418-10K
U401 PROGRAMMED ROM 2000-800-*
U402,U403 IC, LATCHED DRIVERS, UCN-5812EPF-1 IC-732
Y401 CRYSTAL, 4MHZ CR-36-4M
* Order current firmware revision, for example: A02.
Table 6-1 (Continued)
Model 2700 motherboard parts list
Circuit Designation Description Keithley Part No.

Keithley 2700 Specifications

General

Type	Digital Multimeter
Measurement Functions	DC Voltage, AC Voltage, DC Current, AC Current, Resistance, Frequency, Temperature
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Frequency Range	3 Hz to 500 kHz
Temperature Range	-200°C to +1372°C
Display	Vacuum Fluorescent Display
Connectivity	IEEE-488, RS-232
Channels	10
Power Supply	100V to 240V AC, 45Hz to 66Hz
DC Current Range	10 µA to 3 A
AC Current Range	10 µA to 3 A
Temperature Measurement	Thermocouple, RTD