TB 9-6625-2309-24
Figure 15. TS-4320(P)/G board locations and optical module simulator.
(4) Set ON-OFF switch to ON.
NOTE
Allow 15 minutes for TI to warm-up before making voltage
measurements.
(5) Place frequency counter probe tip on solder side of DAS 1A2A4 circuit board at
IC U71, pin 9 (fig. 16). Frequency will be between 24.99925 to 25.00075 MHz; if not, repair
is indicated.
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