Sony HCD-U1BT Service Manual page 57

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3 7 63 1515 0
– SW POWER Board –
IC601 MIP2F20MS1S0
VDD 1
FB 2
CL 3
2.4V
TE
L 13942296513
7.2V
VCC 4
– BT Board –
IC905 CXN1401-5ACL
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CLAMP CIRCUIT
(ILIMIT SETTING)
VCL
FOR LIGHT LOAD
DETECTION INTERMITTENT
OSCILLATION CONTROL
+
27%
IN –
22%
VCL.OUT
ICL.LOW
ILIMIT VARIABLE
CIRCUIT
GENERATOR
CLOCK
12kHz
MAXDC
VCC OVP
+
– S Q
R Q
OVERHEAT RESTARTING
PROTECTION TRIGGER
VCC UV
+
–
47 46 45
50 49 48 44 43
Shield Case
RESET SPI I/F
BPF
RF Blue Core 3
CONNECTOR - Multimedia
- Plug'n' Go
Crystal
Resonator
x ao
y
5 7
1 2 3 4 6 8
i
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8
6.6V
VDD CLAMP
CIRCUIT
CONSTANT
CURRENT
SOURCE
R Q
S Q
VDD UV
+
5.7V
–
5.0V
Q Q
3 6 7 1 3
REGULATOR
5.7V
40 37 36 35
42 41 39 38
UART I/F USB I/F
Audio IN/OUT PIO
u163
9 11 13 16
10 12 14 15
.
2 9 9 4 2 8
ILIMIT
CORRECTION
CIRCUIT
–
+
FOR
DRAIN CURRENT
DETECT
AT TURNING ON
BLANKING PULSE
GENERATION CIRCUIT
GATE DRIVER
POWER
MOSFET
1 5 0 5 8 2 9 9 4
34 33 32 31 30 29 28
27
PCM I/F
AIO
m
co
18 20 22 24
17 19 21 23
HCD-U1BT
9 9
8 SOURCE
7 SOURCE
2 8 9 9
5 DRAIN
26
25
57