Sony HCD-GPX555 Service Manual page 54

HCD-GPX555/GPX888
IC401 AM5890S (MB BOARD (4/9))
30 29 28 27
MUTE
Thermal
Shut down
25K
+
+
10K
1 2
IC451 GL850G-OGY33 (MB BOARD (5/9))
24 23 22 21
USPORT
Transceiver
UTMI
REPEATER
DSPORT1 Logic
DSPORT
Transceiver
1 2 3 4 5
54
26 25 24 23
Voltage
10K
Detection
+
25K
10K
3 4 5 6
20 19 18 17
PLL
FRTIMER
x40, x10
USPORT
SIE
Logic
TT (Transaction Translator)
REPEATER / TT Routing Logic
DSPORT2 Logic DSPORT3 Logic
DSPORT DSPORT
Transceiver Transceiver
6 7 8 9
22 21 20
15K
10K
-
-
25K
Pre-DRV
DRIVER
7
8 9
16 15 14 13
RAM ROM
CPU
Control/Status
Register
DSPORT4 Logic
DSPORT
Transceiver
10 11 12
19 18 17 16
Vcc2
Actuator
Spindle
Driver (6X)
Driver (4X)
Sled Actuator
Driver (4X) Driver (6X)
TRAY
10 11 12 13
15
Vcc2
Vcc2
Vcc1
14