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Chapter 3---Service Adjustments
Model 330, 340SC, 370SC Service Manual 3-1
3.0 Service Adjustments
Contents
3.1 Service (Cover-Off) Power-On Sequence..................................................3-1
3.2 CRT Yoke Rotation....................................................................................3-3
3.3 Vertical Size Tracking................................................................................3-5
3.4 Vertical Linearity Tracking ........................................................................3-6
3.5 Horizontal Size Tracking ...........................................................................3-7
3.6 ILA
®
Bias Settings .....................................................................................3-8
3.7 CRT Mechanical Focus..............................................................................3-9
3.8 Electronic Focus.........................................................................................3-9
3.9 Jumper Settings ..........................................................................................3-13
Front/Rear Jumpers ...................................................................................3-13
Inverted Vertical Jumpers .........................................................................3-15
3.10 G2 Adjustment ...........................................................................................3-16
Sensitivity/Threshold Offset......................................................................3-16
G2 Setting..................................................................................................3-16
3.11 Arc Lamp Alignment and Focus ................................................................3-18
Model 330 Arc Lamp Alignment and Focus.............................................3-18
Model 340SC and 370SC Arc Lamp Alignment and Focus .....................3-20
3.12 Arc Lamp Current Adjustment...................................................................3-21
3.1 Service (Cover-Off) Power-On Sequence
Before applying power to the HJT Model 330, 340SC and 370SC Projector, verify
that the projector is connected to the correct power source (refer to Table 0-1 in
the Safety chapter). If there is any visible damage to any of the cables do not
power on the projector until the damaged cable is replaced.
To turn on projector power:
1. If using a terminal or tethered remote control, connect one or the other to
the input jack marked "Terminal In" on the rear panel of the projector card
cage.
2. Remove the rear cover from the projector.
CAUTION!
If the projector has been operating,
and the rear cover must be removed, be sure to set the
power interlock switch (top right as shown in Photo 3-1)
to
the UP position immediately and turn the projector back on