Service manual

PV151 PROJO
PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS
CHASSIS SWEEP LOSS DETECTION CIRCUIT CHECK
Check Preparation:
Check Number (1):
1. The set can face any direction.
2 Receive the Cross-Hatch Signal
3. VIDEO CONTROLS: Factory Preset.
4. SCREEN FORMAT: Should be PROGRESSIVE mode.
5. Attach the JIG (A) (100 ohm 1/8W resistor) to right
hand side of RN01 and to Ground as shown in the
diagram below.
Check Number (2):
1. The set can face any direction.
2. Receive the Cross-Hatch Signal
3. VIDEO CONTROLS: Factory Preset.
4. SCREEN FORMAT: Should be PROGRESSIVE mode.
5. Attach the JIG (B) (100 ohm 1/8W resistor) to right
hand side of RN11 and to Ground as shown in the
diagram below.
Checking Procedure :
1. Check that the picture is turned off in either check.
After Checking:
1. Remove Jig after each check.
2. Confirm the set returns to normal operation.
CN01
CN04
iii