Kenwood TK-782 Service Manual page 47

TK-782
Ref. No. Use / Function
IC14 8V AVR
IC15 Flip-flop
IC201 DC amp
IC202 Mixer
IC300 PLL
IC400 Power module
IC401 Short protection
Q1 DC switch
Q2 Ripple filter
Q3 Ripple filter
Q4 HOR switch
Q5 HOR SW control
Q6 HOR SW control
Q7 Buffer amp
Q8 AF mute
Q9 AF mute
Q10 8R SW control
Q11 8R switch
Q12 8T switch
Q13 8T SW control
Q15 IF amp
Q16 DET output level
switch
Q17 PC switch
Q18 DET mute
Q19 APC
Q20 APC
Q21 APC control
Q22 TOF switch
Q23 W/N switch
Q24 W/N switch
Q25 TOF switch
Q26 Inverter
Q27 SB switch
Q28 SB SW control
Q29 H/L switch
Q30 SB SW control
Q31 SB SW control
Q32 DET mute
Q202 LNA
Q203 RF amp
Q204 RF amp
Q300 Buffer amp
Q301,302 Active filter
Q401 Short protection
46
DESCRIPTION OF COMPONENTS /
Operation / Condition
8C
Power on/off control
TV
DBM
Reference 16.8MHz.
PLL lock : LD "H"
RF power 25W
R17 connection and, PTT "H" time
DI off
8CL
9CL
IGN
IGN
HNC "H" time on
HT
AM "H" time on
Power off time on
TR "H" time on
Q10 on time on
Q13 on time on
KEY "H" time on
44.85MHz
Wide time on
TX (8T) time on
KEY "H" time on
APC driver
APC pre-driver
TOF "H" time on
Wide time off
Wide time on
Q22 on time on
Power switch "L" time on
Q28 on time on
Q30 on and Q31 off time on
High power time "H"
Power on time on
DC 20V and over time on
TX time on
TX drive first
TX drive last
PLL
IC400 out short time on