Pioneer VSX-52TX Service Manual - Page 115
IC4203, V+5US, IC501, V+5.6U, At OL Detection LOW0V, At Normal, HIGH5V, At Connector falls out LOW0V
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Page 115 highlights
5 • DC Detection circuit 5 R4219 R4501 C4406 D4052 D4051 R4500 D509 R541 C513 S POWER AMP_L ASSY IC4202 R4220 V Q Q4402 V+5.6U R R4054 FLch POWER R4221 IC4203 LSch POWER AMP IN ASSY POWER AMP_R ASSY POWER PROTECT ASSY Q4401 GNDU SBLch MAIN ASSY L IC501 74-pin MAIN u-COM At Normal HIGH(5V) At DC Detection LOW(0V) At Connector falls out LOW(0V) 6 6 VSX-52TX 7 • Overload Detection circuit 7 IC4202 FLch SP POWER 0.18 R4217 470 R4215 D4206 4.7k POWER AMP_L S ASSY C4214 Q4202 NP D4205 R4219 R4214 D4207 R4216 4.7k 0.18 R4218 470 D4305 D4105 IC4203 LSch SBLch Q POWER AMP IN ASSY POWER AMP_R ASSY R4053 V R4051 Q4051 MAIN ASSY L V+5US R534 D506 IC501 R535 73-pin C512 D507 C4051 R4052 MAIN u-COM At Normal HIGH(5V) At OL Detection LOW(0V) 8 8 115 A B C D E F
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