Polytone_pa378b_pcb 电路图 维修原理图.pdf

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POLYTONE PA378B R10 R17 R18 C5 C6+ C2 + C4C3 R4 R5 R7 R20 R21 R23R22 C1 D6 D3 D4 D2D7 Q4 Q2 Q1 C7 C8 R19 R16 R3 R14 +C9 - + C10C11 EBC CBE Q5 PNP Q6 NPN ORG GRN BLU GRN RED ORG C12 + OUT RED - OUT BLU C.T. BLU BLKWHT IN R15 R6 R1 R9 R2 R8 R11 R13 D1 Q1 = PT 1583 replaced by 2 x 2N5210 Q2, Q4 = NSDU57 = MPSU57 replaced by MJE 172 Q3 = NSDU07 = MPSU07 replaced by MJE 182 Q5 = MJ 4502 Q6 = MJ 802 D1 - D7 = 1N4004 CR1 + +- - Q3 E B C R12 C B E C B E B C EE C B Polytone PA378B POLYTONE PA378B 收音机爱好者资料库 Ra d i o Fa n s .CN