Radio Shack Telephone Interface II Reference Handbook

YES
SOLDER
SHORT?
CPU
ClK SOURCE
BAD
POWER·UP
CLEAR
lOGIC
DEFECTIVE
CHECK SWITCH
S·2 AND
RESET lOGIC
OPEN PCB ETCH?
NO
NO
NO
NO
YES
MAY NOT BE
CPU PROBLEM····
SECTION ISOLATE
REPLACE
240
(CPU)
CAS/RAS
lOGIC
FIGURE 17. CPU Flowchart
65

Radio Shack Telephone Interface II Specifications

General

Brand	Radio Shack
Model	Telephone Interface II
Category	Desktop
Language	English