Grundig Vision 6, Service Manual

Page: 32 / 59

GR
UNDIG Ser
vice
Chassis LX
2 - 14
Hauptplatte – Verstärker/ Main Board – Amplifier
3 4 % ^
&
* ( ) ¡ ™
£
TB2924FG
1 2 3 4 5 6 7 8 9 10 11 12
28 29 30 19 20 21 22 23 24 25 26 27
OUT
1 (−)
13 14 15 16 17 18
31 32 33 34 35 36
V
REG
BOOT
1 (+)
OUT
1 (+)
NC PW
GND1
PW
V
CC1
NC BOOT
1 (−)
FEED
1 (+)
Pre
GND1
Rip/F NC IN1 FEED
1 (−)
V
CC
/2 STBY MUTE
NC NC
BOOT
2 (+)
OUT
2 (+)
PW
GND2
OUT
2 (−)
PW
V
CC2
NC
BOOT
2 (−)
OSC
OUT
Pre
GND2
OSC
SW IN2
FEED
2 (−)
FEED
2 (+)
NC
OSC
IN
Pre
V
CC
AGC
V
CC
/2
V
CC
/2
AGC
AGC
V
CC
/2
V
CC
/2
AGC
10dB
Step
1dB
Step
Volume
Controller
0..79 dB
7
2
1 8 4 5
IC325
PT2259
Control
Interface
Digital
Filters
Digital
Audio
Interface
Σ − Δ
DAC
Σ
6 to −73 dB,
1-dB Steps
Headphone
Driver
Σ
−
Δ
DAC
Σ
6 to −73 dB,
1-dB Steps
Headphone
Driver
CLKIN
Divider
(1x, 1/2x)
OSC
CS
SDI
SCLK
MODE
DVDD
BVDD
DGND
LRCIN
DIN
BCLK
AVDD
VMID
AGND
RLINEIN
LLINEIN
HPVDD
HPGND
RHPOUT
ROUT
LOUT
LHPOUT
XTI/MCLK
XTO
CLKOUT
TLV320DAC23
1.0X
VMID
50 k Ω
50 k Ω
VDAC
1.0X
VDAC
CLKOUT
(1x, 1/2x)
DAC
Select
Bypass