Kenwood KDC-5019 Service Manual page 4

KDC-5019/519/7021/7021Y/8020/B7021
Ref.No. Component Name
Q37 DTC143TUA or KRC410 Audio mute SW (Front L)
Q38 DTC143TUA or KRC410 Audio mute SW (Front R) When Q38's base goes Hi, Pre-output is muted.
Q39 DTC143TUA or KRC410 Audio mute SW (Rear L)
Q40 DTC143TUA or KRC410 Audio mute SW (Rear R)
Q43 DTC124EUA or UN5212
Q44 2SB1277(Q,R)
Q45 DTC124EUA or UN5212
Q46 2SB1277(Q,R)
Q50 DTC144EUA or UN5213
Q51 2SA1576A or 2SB1218A
Q52 2SC4081 or 2SD1819A Composite signal output buffer
Q53 DTC144EUA or UN5213 IFC buffer
4
Application/Function
When Q37's base goes Hi, Pre-output is muted.
When Q39's base goes Hi, Pre-output is muted.
When Q40's base goes Hi, Pre-output is muted.
When Q43's base goes Hi, Q44 is turned on, and A8V is supplied to the F/E.
FM +B SW
Works during FM reception mode.
When Q45's base goes Hi, Q46 is turned on, and A8V is supplied to the F/E.
AM +B SW
Works during AM reception mode.
While a panel is attached to the set, Q50 and Q51 are turned on, and
PAN 5V SW
BU 5V is supplied to the panel.
Waveform shaping
Operation/Condition/Compatibility