Grundig davio GBF6300, Руководство по обслуживанию

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C187
1u
C176 1u
C178 1u
R185
1K
C173
220u/16
R175
47K
R188
1K2
R178
1K
C174
100n
R184
15K
R174
47K
R190
10K
12V_SW
SW_B
SW_A
VOL/MUTE
R182
10K
C179
560pF
R172
18K
R176
10K
C182
22pF
R183
(18K)
R171
10K
C185
22pF
C183
0.1uF
R177
(18K)
C172
22pF
C181
560pF
R179
10K
R180
18K
C177
22pF
+5V
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
AUDIO
C171
2.2uF
C180
2.2uF
C184
(2.2uF)
C175
(2.2uF)
GND
X0
12
X1
14
X2
15
X3
11
Y0
1
Y1
5
Y2
2
Y3
4
EN 6
A
10
B
9
X 13
Y 3
VDD 16
VEE 7
IC108
74HC4052 SO16
RIGHT
LEFT
GND
Right
Left
GND
S109
PC Audio
NC
1
NC
2
NC
3
VCC
4
IN
5
SGND
6
VC
7
NC
8
NC
9
NC
10
NC 11
NC 12
NC 13
OUT+ 14
PGND 15
NC 16
OUT- 17
NC 18
NC 19
NC 20
IC107
TDA7056AT (FAN7040)
1
2
3
4
S106
MOLCON4
L+
L-
R-
R+
GND GND
NC
1
NC
2
NC
3
VCC
4
IN
5
SGND
6
VC
7
NC
8
NC
9
NC
10
NC 11
NC 12
NC 13
OUT+ 14
PGND 15
NC 16
OUT- 17
NC 18
NC 19
NC 20
IC109
TDA7056AT (FAN7040)
GND GND
+5V 1
2
S108
RCA1P
1
2
S107
RCA1P
SC_AI
SC_RI
RED
WHITE
R173
0R
R181
0R
R193
10K
C188
22pF
R194
(18K)
C190
22pF
R189
10K
R191
18K
GND
GND
GND
GND
C189
(2.2uF)
R192
0R
C186
2.2uF
VCC2.5V
R186
10K
R187
10K
+5V
L117
FB1206
R195
1K
GND
R197
1K
R196
33k
C191
22pF
GND
R198
10k
MONO_AUD
VOL/MUTE< 0.3V - Mute
VOL/MUTE> 0.3V - Volume
L+(M)
L-(M)
R+
R-
(VOL/MUTE -PWM )
L123 120R/100MHz
L124 120R/100MHz
L125
120R/100MHz
L126
120R/100MHz
L127
120R/100MHz
L128
120R/100MHz
6
positive input
15
MGM576
4
5
TDA7056AT
7
14 I + i
17 I − i
STABILIZER
TEMPERATURE
PROTECTION
6
DC volume control
Vref
+
+
−
+
−
positive output
negative output
power
ground
signal
ground
VP
1 to 3, 8 to 13,
16, 18 to 20
n.c.
Hauptplatte – Verstärker/ Main Board – Amplifier
6
GR
UNDIG Ser
vice
Chassis L
W
2 -