Block Diagram - Main Section - Sony STR DE197 - AV Receiver Service Manual

4-3. BLOCK DIAGRAM — MAIN SECTION —
TN1
FM/AM TUNER PACK
10V
+10V
L CH
FM 75Ω
COAXIAL
R CH R-CH
MUTE
ANTENNA
AM
CE
CLOCK
DATA
DO
TUNED
US,CND MODEL
STEREO
RDS INT
RDS DATA
FM SIGNAL
VDD3.3V 3.3V
AEP MODEL
STR-DE197
MUTE
CE
CL
CD IN
DI
IC906
DO
10 8
TUNED
12 11
US,CND MODEL
STEREO MD/TAPE IN
LEVEL
SHIFT
5 6
2 3
VIDEO 2 AUDIO IN
LEVEL
SHIFT
Q905,906 IC905
LEVEL
3 7
SHIFT
VIDEO 1 AUDIO IN
22 15 46 19 18 50 12 10 11 9
53 38 39 34 35 49
X201
4.19MHz
LED
1 3 1
DRIVER
Q206
REMOTE
CONTROL
RECEIVER
RV201
D203
IC202
MASTER VOLUME
BASS
BOOST
SOUND CONTROL
IC401
TUNER
L REC L
9 32
VOL L
J801 (1/2)
29
-1
CD L
L 7
-2
R-CH
R
TREBLE
L
-5 MD L
MIDDLE
5
L
L
-6
BASS
R-CH
R
L
J802 (1/2)
VIDEO 2
-1 OUT L
20
3
L
-2
R-CH
R
CONTROL
-5
VIDEO 1
1
L
-6
R-CH
R
15 14
14 13
SYSTEM CONTROLLER,
FL DRIVER
IC201
71 77 - 72,70 - 62 7 - 1,80 - 78 28 27 26
KEY MATRIX
FL201
VACUUM
S204-213,
FLUORESCENT
215-236,
DISPLAY
238,239
-24V F1 F2
15 15
VIDEO 1,MD/TAPE
SELECT
AUDIO AMP
IC404
IC403
3 1 1 2
4 3
13 5
Q474 Q424
INV. INV.
ELECTRONIC
VOLUME
IC402
L L
IN OUT
3 2
VOLUME
CONTROL
8 9 10
41 42 43 37 36
PROTECTOR
RY R1 COIL
RY POWER
25 24 44 23 54 55 17
LED LED
DRIVER DRIVER
Q204 Q205
S201 S202 S203
/ I A B
I
SPEAKER
D205 D206
A B
SPEAKER
STR-DE197
J801 (2/2)
-3
L
OUT MD/TAPE
-4
R-CH
R
J802 (2/2)
-3
L
AUDIO OUT VIDEO 1
-4
R-CH
R
ST-L
R-CH ST-R
POWER
A
SECTION
(Page 16)
RY HP 60 HP RELAY
RY A 58 SPK A RELAY
RY B 59 SPK B RELAY
16 PROTECTOR SIG
56 R1 COIL RELAY
57 POWER RELAY
STOP 47 STOP SIGNAL
• Signal path
RESET
: TUNER (FM/AM)
SWITCH
Q201,202
: VIDEO (AUDIO)
: CD (ANALOG)
• R-ch is omitted due to
same as L-ch.
• Abbreviation
CND : Canadian model