JVC 340 SC - Manual (Page 121)

Chapter 4—Maintenance
4-8 Model 330. 340SC, 370SC Service Manual
Table 4-1 Ignitor Connections for Model 330 Projector
Ignitor
Terminal
Location on
Ignitor
Wire Color Wire goes to:
POS
INPUT
Right Side of
Ignition Coil
Red J504 (+) terminal on
System Power Supply.
NEG
INPUT
Negative Terminal
Lug mounted on
circuit board
Black
(on J503
side)
J503 (-) terminal
on System Power Supply.
NEG
INPUT
Negative Terminal
Lug mounted on
circuit board
Black Terminal
on rear of Arc Lamp.
POS
OUTPUT
Left Side of
Ignition Coil
White Enters middle
of Arc Lamp Housing.
Model 340SC and 370SC Ignitor Assy/Arc Lamp Assy (P/N
104651 or 104120) Removal
To remove the Ignitor Assembly or Xenon Arc Lamp from a Model 340SC and a
Model 370SC Projector:
Refer to Figure 4-4 and Figure 4-5 throughout the procedure below and to
establish right and left orientation. Label any connectors prior to removing to
ensure they are reconnected correctly.
1. Turn power off at the remote and circuit breaker and unplug the projector.
Do not attempt to remove or replace the Arc Lamp assembly without first
ensuring that power is off and the projector is unplugged from the AC wall
outlet.
2. Remove the front and rear projector covers (Section 4.2).
3. Put on protective clothing, including safety goggles and face shield.
4. Disconnect the black and red Arc Lamp high voltage cables from System
Power Supply J503 and J504 and untie the J505 cable that is wrapped
around J503. Do not unplug this cable from J505—it is wrapped around
J503 to keep it in place in case it must be removed in order to replace the
System Power Supply.
5. Disconnect the fan connector at the left front of the Arc Lamp housing.
6. Disconnect the cable from the Squirrel Cage blower on the right side of
the Arc Lamp housing.
7. Remove the Start Capacitor from the bracket adjacent to the Arc Lamp
assembly (one nut underneath the capacitor).
8. Cut the cable tie wrap (not shown in Figure 4-4 or Figure 4-5) at the
bottom rear of the Arc Lamp assembly (beneath the fan on the bottom rear
of the Arc Lamp assembly).
9.