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Figure 2-4.
Power Transformer T 1 Primary
Connections for 208Vac Operation
(Model 6260B and 6269B)
of power transformer T1 (see Figure 7-4) and solder
it instead to "208V" terminal of transformer (see
Figure 2-4 B).
2-21 CONNECTIONS 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
2-5 B). 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" ter-
minal of transformer (see Figure 2-2 C). 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 2-3 C).
2-23 CONNECTIONS 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 transfor-
mer 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.
2-3
TM 11-6625-2958-14&P