Sanyo DP50741, Руководство по обслуживанию

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Specifications
POWER RATING . . . . . . . . . . . . . . . . . . . . . . . . . 120VAC
270 W (AVG.)
ANTENNA INPUT IMPEDANCE. . . . . . . . . . . . . . . . . 75
Ω
UHF/VHF/CATV
DIGITAL
RECEIVING CHANNEL . . . . . . . . . . . . . . . . . 2 - 13 (VHF),
14 - 69 (UHF),
01, 14-94, 95-135 (CATV)
1-135 (DIGITAL)
REMOTE READY. . . . . . . . . 48 KEY REMOTE CONTROL
SOUND OUTPUT. . . . . . . . . . . . . . . . . . . . . . . 10.0 W/CH
INTERMEDIATE FREQUENCY
PICTURE IF CARRIER . . . . . . . . . . . . . . . . . . 45.75MHz
SOUND IF CARRIER . . . . . . . . . . . . . . . . . . . 41.25MHz
COLOR SUB CARRIER . . . . . . . . . . . . . . . . . 42.17MHz
CABINET DIMENSIONS
WIDTH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1238mm
HEIGHT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 838mm
DEPTH INCLUDING BASE . . . . . . . . . . . . . . . . 283mm
REFERENCE No.
SM
780188
DP50741, J4JF, PRODUCT CODE 111011204
FILE NO.
SERVICE MANUAL Remote Control Digital
Color Television DP50741
(U.S.A.)
(CANADA)
ORIGINAL VERSION
Chassis No. P50741-01
NOTE: Match the Chassis No. on
the unit’s back cover with
the Chassis No. in the
Service Manual.
If the Original Version
Service Manual Chassis
No. does not match the
unit’s,
additional Service
Literature is required. You
must refer to “Notices” to the
Original Service Manual
prior to servicing the unit.
Servicing should be performed by only trained and qualified service personnel.
Contents
SAFETY INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . 2
SERVICE ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . 3
ON-SCREEN SERVICE MENU . . . . . . . . . . . . . . . . . . . . . 4
POWER FAILURE CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . 5
MECHANICAL DISASSEMBLY . . . . . . . . . . . . . . . . . . . . 6
CHASSIS ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . 10
COMPONENT AND TESTPOINT LOCATIONS . . . . . . 23
BLOCK DIAGRAM POWER LINES. . . . . . . . . . . . . . . . . 26
BLOCK DIAGRAM SIGNAL LINES . . . . . . . . . . . . . . . . 27
IC BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . 28
TROUBLESHOOTING FLOW CHARTS . . . . . . . . . . . . . 34
CONTROL PORT FUNCTIONS. . . . . . . . . . . . . . . . . . . . 37
MAIN SHEET BLOCK DIAGRAM & PERIPHERICALS. . 39
SCHEMATIC NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
IC, DIODE, AND TRANSISTOR PIN LAYOUTS. . . . . . . 41
PC BOARD CONNECTIONS AND LOCATIONS . . . . . . 42
CAPACITOR AND RESISTOR CODE CHART . . . . . . . . 43
SCHEMATIC DIAGRAMS. . . . . . . . . . . . . . . . . . . . . . . . 44
© Sanyo Manufacturing Corporation 2011