Caution; Test Procedures And Troubleshooting - Sanyo EM-CD2900UK Service Manual

7. TEST PROCEDURES AND TROUBLESHOOTING 7. TEST PROCEDURES AND TROUBLESHOOTING 7. TEST PROCEDURES AND TROUBLESHOOTING 7. TEST PROCEDURES AND TROUBLESHOOTING 7. TEST PROCEDURES AND TROUBLESHOOTING

CAUTION

CAUTION CAUTION
CAUTION CAUTION
‑ DISCONNECT THE POWER SUPPLY CORD FROM THE WALL ‑ DISCONNECT THE POWER SUPPLY CORD FROM THE WALL ‑ DISCONNECT THE POWER SUPPLY CORD FROM THE WALL ‑ DISCONNECT THE POWER SUPPLY CORD FROM THE WALL ‑ DISCONNECT THE POWER SUPPLY CORD FROM THE WALL
OUTLET WHENEVER RMOVING THE CABINET FROM THE OUTLET WHENEVER RMOVING THE CABINET FROM THE
OUTLET WHENEVER RMOVING THE CABINET FROM THE OUTLET WHENEVER RMOVING THE CABINET FROM THE OUTLET WHENEVER RMOVING THE CABINET FROM THE
UNIT. UNIT. UNIT.
UNIT. UNIT.
PROCEED WITH TESTS ONLY AFTER DISCHARGING THE PROCEED WITH TESTS ONLY AFTER DISCHARGING THE PROCEED WITH TESTS ONLY AFTER DISCHARGING THE PROCEED WITH TESTS ONLY AFTER DISCHARGING THE PROCEED WITH TESTS ONLY AFTER DISCHARGING THE
HIGH VOLTAGE CAPACITOR AND REMOVING THE LEAD HIGH VOLTAGE CAPACITOR AND REMOVING THE LEAD
HIGH VOLTAGE CAPACITOR AND REMOVING THE LEAD HIGH VOLTAGE CAPACITOR AND REMOVING THE LEAD HIGH VOLTAGE CAPACITOR AND REMOVING THE LEAD
WIRES ON THE PRIMARY WINDING OF THE HIGH VOL‑ WIRES ON THE PRIMARY WINDING OF THE HIGH VOL‑ WIRES ON THE PRIMARY WINDING OF THE HIGH VOL‑ WIRES ON THE PRIMARY WINDING OF THE HIGH VOL‑ WIRES ON THE PRIMARY WINDING OF THE HIGH VOL‑
TAGE TRANSFORMER.(SEE FIGURE 3) TAGE TRANSFORMER.(SEE FIGURE 3)
TAGE TRANSFORMER.(SEE FIGURE 3) TAGE TRANSFORMER.(SEE FIGURE 3) TAGE TRANSFORMER.(SEE FIGURE 3)
Primary
Winding
A. TEST PROCEDURES A. TEST PROCEDURES
A. TEST PROCEDURES A. TEST PROCEDURES A. TEST PROCEDURES
COMPONENT COMPONENT COMPONENT
COMPONENT COMPONENT
MAGNETRON MAGNETRON
MAGNETRON MAGNETRON MAGNETRON
Secondary
Winding
CHECKOUT PROCEDURE CHECKOUT PROCEDURE CHECKOUT PROCEDURE
CHECKOUT PROCEDURE CHECKOUT PROCEDURE
1) Check for resistance: Across the filament
terminal of the magnetron with an ohm.
2) Check for resistance: Across the filament
terminal of the magnetron and the chassis
ground with an ohm meter on highest scale.
Filament
Winding
Figure 3
Figure 4
Figure 5
‑ 5 ‑
RESULT RESULT RESULT RESULT RESULT
Normal reading:
Less than 1 ohm.
Normal reading:
Infinite ohms.