Kenwood TS-990S Service Manual

241
SCHEMATIC DIAGRAM
TS-990S
X41-380 1/1
■
Schematic Diagram
A B C D E
2
1
3
4
5
6
7
OPTIONAL ACCESSORIES: SP-990 (EXTERNAL SPEAKER)
R4
56
R1
100
R5
8.2
R3
56
J1
1
9
8
7
3
2
4
5
6
R2
100
C1
100u
35
C2
47u 25
S3
S2 S1
R6
100
S6
L2
560u
L1
1200u
S5
S4
R8
1k
R7
1k
J2
J3
J4
R9
1k
W2
1
2
3
4
5
W3
1
2
3
4
5
W1
1
2
3
4
SP(RED)
FIL(WHITE)
PHONES
GND(BLACK)
SPG(BLACK)
SWITCH UNIT (X41-3800-00) (A/3)
LOW2
HIGH2
GND (BLACK)
HIGH1
FIL (WHITE)
A (YELLOW)
B (RED)
LOW1
FIL
MUTE INPUT
LINE OUT
B
A (YELLOW)
INPUT
A
LOUT (ORANGE)
B (RED)
GND (BLACK)
GND (BLACK)
LOUT (ORANGE)
SWITCH UNIT (X41-3800-00) (B/3)
SWITCH UNIT (X41-3800-00) (C/3)
SP

Kenwood TS-990S Specifications

General

Receiver Type	Triple Conversion Superheterodyne
Antenna Tuner	Built-in automatic antenna tuner
DSP	Yes
IF DSP	Yes
Modes	SSB, CW, AM, FM
Display	7-inch TFT color LCD
Weight	25 kg (55.1 lbs)
Antenna Connectors	SO-239
Power Supply	13.8V DC