Read Harman Kardon TU 980 (serv.man4) Service Manual online
FM
FRONT END
FM/AM
IF
MPX
AMP
MUTE
RDS
FILTER
P L L
AM ANT
/ OSC
TUNER MODULE
D A B MODULE
① ② ③ ④ ⑤ ⑥ ⑦
⑭ ⑬ ⑫ ⑪ ⑩ ⑨ ⑧
+VDD
+5V
-VSS
-5V
L - OUT
R - OUT
L - OUT
R - OUT
u-COM(CPU)
S3F84BB
IC71
+5.6V
UNSWITCH
TUNER
MODULE
REMOTE
SENSOR
KEY
SCAN
FL
DAB
MODULE
FM/AM ON
DAB ON
POWER
TRANS
REGULATOR
REGULATOR
UNSWITCH
REGULATOR
FL +40V
UNSWITCH
FL +/-
+5.6 V
-5.6 V
TUNER
+12 V
+12 V
FL +5V
DAB +5V
(Filament voltage)
UNSWITCH
6dB
6dB
R-CH
L-CH
AC 230V~240V
50 HZ
ANTENNA
FM
AM
DAB ANTENNA
BUFFER
①
②
③
②
③
VCC
AUDIO OUT
DIGITAL OUT
COAXIAL
BLOCK DIAGRAN
SPDIF OUT
3.3 V
INPUT
OUTPUT
REMOTE
IN/OUT
AC +5.4V
harman/kardon
TU 980 Service Manual
Page 30 of 32
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