Sony GDM-5402 free download

File name Sony GDM-5402_chassis G1.pdf

GDM-5402 (INPUT 1:2 / HD15:HD15) SERVICE MANUAL US Model Canadian Model AEP Model Chassis No. SCC-L22M-A G1 CHASSIS SPECIFICATIONS 0.24 mm aperture grille pitch 21 inches measured diagonally 90-degree deflection FD Trinitron Viewable image size Approx. 403.8 Ч 302.2 mm (w/h) (16 Ч 12 inches) 19.8" viewing image Recommended resolution Horizontal: 1600 dots Vertical: 1280 lines Standard image area Approx. 388 Ч 291 mm (w/h) (15 3/8 Ч 11 1/2 inches) or Approx. 364 Ч 291 mm (w/h) (14 3/8 Ч 11 1/2 inches) Deflection frequency* Horizontal: 30 to 121 kHz Vertical: 48 to 160 Hz AC input voltage/current 100 to 240 V, 50 ­ 60 Hz, 2.0 ­ 1.0 A CRT Power consumption Dimensions Mass Plug and Play Approx. 145 W Approx. 498 Ч 491 Ч 478 mm (w/h/d) (19 5/8 Ч 19 3/8 Ч 18 7/8 inches) Approx. 32 kg (70 lb 9 oz) DDC1/2B/2Bi, GTF** * Recommended horizontal and vertical timing condition · Horizontal sync width duty should be more than 4.8% of total horizontal time or 0.8 µs, whichever is larger. · Horizontal blanking width should be more than 2.3 µsec. · Vertical blanking width should be more than 450 µsec. ** If the input signal is Generalized Timing Formula (GTF) compliant, the GTF feature of the monitor will automatically provide an optimal image for the screen. Design and specifications are subject to change without notice. COLOR GRAPHIC DISPLAY GDM-5402 SAFETY CHECK-OUT After correcting the original service problem, perform the following safety checks before releasing the set to the customer: 1. Check the area of your repair for unsoldered or poorly-soldered connections. Check the entire board surface for solder splashes and bridges. 2. Check the interboard wiring to ensure that no wires are "pinched" or contact high-wattage resistors. 3. Check that all control knobs, shields, covers, ground straps, and mounting hardware have been replaced. Be absolutely certain that you have replaced all the insulators. 4. Look for unauthorized replacement parts, particularly transistors, that were installed during a previous repair. Point them out to the customer and recommend their replacement. 5. Look for parts which, though functioning, show obvious signs of deterioration. Point them out to the customer and recommend their replacement. 6. Check the line cords for cracks and abrasion. 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 HV. 8. Check the antenna terminals, metal trim, "metallized" knobs, screws, and all other exposed metal parts for AC Leakage. Check leakage as described below. To Exposed Metal Parts on Set LEAKAGE TEST The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes). Leakage current can be measured by any one of three methods. 1. A commercial leakage