Painel Principal - Philips MRD130 Service Manual

24 MRD130

PAINEL PRINCIPAL

CONTEÚDO
Diagrma Interno IC............................................................. 24
Tensões............................................................................... 25
Painel Principal - Esquema Elétrico................................... 26
Painel Principal- Layout......................................................... 28
ES6628F DIAGRAMA IC INTERNO
AM5868S DIAGRMA IC INTERNO
MUTE VINTK OP1N+ OP1N- VINLD GND
BIAS
27
28 26 25 24 23 22
GND
10K -
+
MUTE
10K
-
+
25K
Thermal
Shut down
25K
+ -
10K
10K
-
+
2 3 4 5 6 7
1
VINPC OP2N+ OP2N- VINSL+ OP2OUT FWD REV
TDA7265 DIAGRMA IC INTERNO
VCTL OP1OUT VCC2 VOLD- VOLD+ VOTK-
VOTK+
21 20 19 18 17 16 15
Vcc2
GND
15K
-
Spindle Actiator
Driver(4X) Driver(6X)
+
Vcc2
Vcc2
Vcc1
+
-
25K
Sled Actiator
Driver(6X)
Driver(4X)
Pre-DRV
TRY
DRIVER
PGND
Vcc1
9 10 11 12 13
8 14
VCCL VOTR- VOTR+ VOSL+ VOSL- VOFC+ VOFC-