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SERVICE MANUAL P900
P900
US Model
Canadian Model
AEP Model
AUS Model
Japan Model
N. Hemisphere Model
UK Model
Chassis No. SCC-L30M-A
F99 CHASSIS
SPECIFICATIONS
Picture tube 0.24 mm (center) -0.25mm (edge) Power Consumption
aperture grill pitch Maximum 140 W, 478 BTU/h
19 inches measured diagonally Nominal 100 W, 341BTU/h
90-degree deflection
Deflection frequency Horizontal: 30 to 107 KHz (automatic)
Video image area (17.99" maximum viewing image) Vertical: 48 to120 Hz (automatic)
Approx. 365 X 274 mm (w/h)
(143/8 x 104/5 inches) AC input voltage/current 100 to 120 V, 50/60 Hz,
1.8A (RMS) at 100VAC
Resolution Horizontal: Max. 1920 dots
Vertical: Max. 1440 lines 220 to 240V, 50/60Hz,
1.0A (RMS) at 240 VAC
Standard image Approx. 352 x 264 mm (w/h)
area (137/8 x 102/5 inches) Dimensions 449 x 475 x 462 mm (w/h/d)
(172/3 x 187/10 x 181/5 inches)
Input signal Analog RGB (75 ohms typical) Mass Approx. 26.0 kg (57 lb 5 oz)
Video 0.7 Vp-p, Positive
Separate Horizontal and Vertical
Sync TTL level, Positive or Negative
Video Composite (Sync on Green)
0.3 Vp-p Design and specifications are subject to change without notice.
COLOR MONITOR
P900
POWER MANAGEMENT MODES
If you have VESA's DPMS compliance display card or software installed in your PC, the monitor can automatically reduce
its power consumption when not in use. If input from keyboard, mouse, or other input devices is detected, the monitor
will automatically "wake up." The following table shows the power consumption and signaling of this automatic power
saving feature.
SELF DIAGNOSTIC FUNCTION
When a failure occurs, the STANDBY/TIMER lamp will flash a set number of times to indicate the possible cause of the
problem. If there is more than one error, the lamp will identify the first of the problem areas.
TIMING SPECIFICATIONS
--2--
P900
SAFETY CHECK-OUT
After correcting the original service problem, perform LEAKAGE TEST
the following safety checks before releasing the set to The AC leakage from any exposed metal part to earth ground
the customer: and from all exposed metal parts to any exposed metal part
1. Check the area of your repair for unsoldered or poorly- having a return to chassis, must not exceed 0.5 mA (500
soldered connections. Check the entire board surface microampere). Leakage current can be measured by any one
for solder splashes and bridges. of three methods.
2. Check the interboard wiring to ensure that no wires 1. A commercial leakage tester, such as the Simpson 229 or
are "pinched" or contact high-wattage resistors. RCA WT-540A. Follow the manufacturers' instructions to
3. Check that all control knobs, shields, covers, ground use these instructions.
straps, and mounting hardware have been replaced. 2. A battery-operated AC milliammeter. The Data Precision
Be absolutely certain that you have replaced all the 245 digital multimeter is suitable for this job.
insulators. 3. Measuring the voltage drop across a resistor by means of
4. Look for unauthorized replacement parts, particularly a VOM or battery-operated AC voltmeter. The "limit"
transistors, that were installed during a previous indication is 0.75 V, so analog meters must have an
repair. Point them out to the customer and accurate low voltage scale. The Simpson's 250 and Sanwa
recommend their replacement. SH-63TRD are examples of passive VOMs that are
5. Look for parts which, though functioning, show suitable. Nearly all battery operated digital multimeters
obvious signs of deterioration. Point them out to the that have a 2V AC range are suitable. (See Figure A)
customer and recommend their replacement.
6. Check the line cords for cracks and abrasion. To Exposed Metal
Parts on Set
Recommend the replacement of any such line cord
to the customer.
7. Check the B+ and HV to see if they are specified
values. Make sure your instruments are accurate; be
suspicious of your HV meter if sets always have low AC
0.15