Electron tube socket
the wires at their terminals on
wire leading to the power
2. Remove four nuts (24) and
screws (26) and remove the
holding relay K1 (25) from the
The wire leads of the resistor R3 (16,
electrical chassis (13).
(g) Capacitor C1.
1 and 6 of the electron tube socket
1. Unsolder the two wires leading
(10). These terminals are not used in
to the terminals of the capacitor
therefore may be used to support the
2. two nuts (20) and screws (19)
resistor R3. A wire lead from the
and remove the capacitor C1
terminal board (15) (terminal strip-
(17) from the electrical chassis
lug) also would be soldered to
terminal 6 of the electron tube socket
(h) Capacitor C3 and resistors R2, R3,
and a wire lead from the power
1. Unsolder the wire leads of the
soldered to terminal 1 of the electron
capacitor C3 (13) resistor R2
(14), resistor R3 (16), and
resistor R4 (12) from the
(i) Electron tube socket.
terminal board (15).
removed, pull the electron tube
V1 (11) from its electron tube
The terminal board (15) (terminal
2. Mark all wires leading to the
strip-lug) is mounted to the electrical
chassis (18) at any convenient
location. It may be secured at one of
terminals on the socket.
the mounting holes of the electron
3. Remove two nuts (11) and
tube socket (10) or a separate
screws (9) and remove the
mounting hole may be drilled in the
electron tube socket (10) from
chassis for this terminal board. If the
the electrical chassis (18).
terminal board (15) was not released
(3) Cleaning and inspection.
(a) Clean all parts with dry-cleaning
removed, remove the mounting
solvent and wipe dry with a-clean,
hardware which secures it to the
(b) Check all wires for broken or
If wire is
2. Unsolder the other wire leads of
damaged or there is doubt as to its
the capacitor C3 (13) and
condition, replace the wire.
resistor R2 (14) from terminal 5
(c) Inspect the terminals of the switch,
of the electron tube socket (10).
timers, relays, and terminal boards
3. Unsolder the other wire lead of
the resistor R4 (12) from the
Inspect the relay contacts for
ground terminal on the electron
tube socket (10).
(d) Inspect the grommets (1) for wear or
4. Unsolder the other wire lead of
the resistor R3 (16) from its
connection with the electrical