of power transformer T1 (see Figure 7-4)and solder it instead to "208V" terminal of transformer (see Figure 2-4B).
2-21CONNECTIONS FOR 115 VOLT OPERATION (Model -6259B, 6261B, and 6268B: Option 026)
2-22 To convert Model 6259B, 6261B, or 6268B to operation from a 115Vac source, a new circuit breaker must be installed and taps must be changed on the bias transformer, power transformer, and RFI choke as follows:
a. Obtain and install new LINE circuit breaker (A5CB1). Connections to new circuit breaker are same as old connections. Refer to Option 026 in Table 6-4(Replaceable Parts) for current rating and HP Part Number.
b. Remove and partially disassemble RFI assembly as described in Steps (a) through (d) of Paragraph 5-67.
c. Unsolder jumper between terminals 2 and 3 of RFI choke mounting board and solder jumpers between terminals 1 and 3, 2 and 4 (see Figure 2-5B). Replace cover on RFI assembly.
d. Unsolder wires from circuit breaker A5CB1 and fan B2 connected to "230V" terminal of bias transformer A3T2 (see Figure 7-2). Solder wire from circuit breaker to "115V" terminal of transformer, and solder wire from fan to "0V" terminal of transformer (see Figure 2-2C). Note that
Figure 2-5.RFI Choke (A2L1A/A2L1B) Connections for 115Vac Operation (Model 6259B, 6260B, 6261B, and 6268B)
fan B2 is not used in Model 6259B.
e.Re-install RFI assembly by reversing pro- cedure of Step (b).
f.Unsolder jumper connecting terminals 2 and 3 of power transformer T1 (see Figure 7-4)and solder jumpers between terminals 1 and 3, 2 and 5 (see Figure 2-3C).
2-23CONNECTIONS FOR 115 VOLT OPERATION (Model 6260B: Option 016)
2-24 To convert Model 6260B to operation from a 115Vac source, a new power transformer and circuit breaker must be installed and taps must be changed on the RFI choke and bias transformer as follows:
a. Obtain and install new power transformer (T1) and new circuit breaker (A5CB1). Refer to Option 016 in Table 6-4(Replaceable Parts) for power ratings and HP Part Numbers. New transformer has two primary terminals. Transfer wire from old transformer "0V" terminal to new transformer "0V" terminal, and wire from old transformer "230V" terminal to new transformer "115V" terminal. New circuit breaker connections are same as old.
