- 2-3 -
3. Front Circuit (1/2)
POWER ON
LED OFF.
Is digitron
on normally?
Check if
the CN401
is OK.
Check if the
Front power is
OK(*1).
Check
if the IC401 OSC Pin
Wavefrom is
OK.
Check if the
IC401 Pins
is OK(*2).
Check if the
R 427
OK.
Replace
R 427.
Refer to SMPS Part.
Reconnec it.
Check if the
VFD401 Pins
are OK.
Check
IC401 Pins , ,
Wavefrom
Refer to Micom Circuit.
Check Patten
and Resoldering.
Replace IC401.
Check if all Buttens
are OK.
Check if the
Volume is
OK.
Check if the
Headphone is
OK.
Check if the
Remocon is
OK.
Front B/D OK.
* 1: CN401 Pins
Pin 13: +5V
Pin 14: -32V
Pin 15: -28V
Pin 16: -32V
* 2: CN401 Pins
Pin 14: +5V
Pin 133: -32V
* 3: VFD401 Pins
F11 : -28V
F22 : -32V
52
5 6 7
Содержание DA-3520
Страница 19: ... 2 11 CS4228 CS49300 CS8415A ...
Страница 20: ... 2 12 µPD16311 NJM2279 NJU7312A ...
Страница 23: ...2 15 2 16 BLOCK DIAGRAM ...
Страница 25: ...2 19 2 20 µ COM FRONT SCHEMATIC DIAGRAM ...
Страница 26: ...2 21 2 22 DAP Digital Amplifier Part SCHEMATIC DIAGRAM ...
Страница 27: ...2 23 2 24 DSP DIGITAL AUDIO PROCESSING SCHEMATIC DIAGRAM ...
Страница 28: ...2 25 2 26 PRINTED CIRCUIT DIAGRAMS MAIN P C BOARD SOLDER SIDE ...
Страница 29: ...2 27 2 28 MAIN P C BOARD COMPONENT SIDE ...
Страница 30: ...2 29 2 30 MAIN FRONT P C BOARD SOLDER SIDE MAIN FRONT P C BOARD COMPONENT SIDE ...
Страница 42: ...3 11 3 12 SCHEMATIC DIAGRAMS DRIVE RF SCHEMATIC DIAGRAM ...
Страница 43: ...3 14 3 13 DVD DSP DIGITAL SIGNAL PROCESSING SCHEMATIC DIAGRAM ...
Страница 44: ...3 15 3 16 µ COM SCHEMATIC DIAGRAM ...
Страница 45: ...3 17 3 18 MPEG SCHEMATIC DIAGRAM ...
Страница 47: ...3 21 3 22 PRINTED CIRCUIT DIAGRAM DVD P C BOARD SOLDER SIDE ...
Страница 48: ...3 23 3 24 DVD P C BOARD COMPONENT SIDE ...