Block Diagram - Amp Section - Sony UDA-1 Service Manual

5-3.

BLOCK DIAGRAM - AMP Section -

L, R L
>004B
(Page 26)
R
J400 (1/2)
L
LINE IN
R
UDA-1
J400 (2/2)
BUFFER
IC415
MUTING MUTING
Q400 Q401
MUTING CONTROL
SWITCH
Q217 – 219
TONE CONTROL,
ELECTRICAL VOLUME
IC206
-1
1 IN A1 OUT A 8
-2
32 IN B1 OUT B 25
MUTING MUTING
RY203
Q210 Q209
10 11 12
RELAY DRIVE
Q207
66 83 84 86
L
LINE OUT
(D/A DIRECT)
R
POWER AMP
IC351
POWER AMP
IC350
SWITCHING
IC111
5
4
6
MUTING CONTROL
8
SWITCH 10
9
Q213, 214, 216
DIR_ERROR
3
1 DIR_CKST
2
11
13
12
XLINE_OUT_
MUTE_DSP
X301
4MHz
48 49 68 82
SYSTEM CONTROLLER
IC306 (3/4)
27 27
-1
-2
DC DETECT DC DETECT
RY201
Q205, 206 Q202, 203
RELAY DRIVE
Q201
PROTECT
SWITCH
Q208
D206
D205
TH200
D208
63 89 69
UDA-1
SIGNAL PATH
: AUDIO (ANALOG)
: AUDIO IN (ANALOG)
TB701
+
L
–
SPEAKERS
+
R
–
TB700
J600
-1
PHONES
-2
RY200
RELAY DRIVE
Q200
DIR_ERROR, DIR_CKST,
XLINE_OUT_MUTE_DSP
>005B
(Page 26)
70 92
EEPROM
IC307
E2P_SDA 95 5 SDA
E2P_SCL 94 6 SCL