JVC LT-42HB1BU Service Manual page 27

MAIN PWB CIRCUIT DIAGRAM (5/46) [MICRO CTRL]
5
U81
+5VSTB +5VSTB
OPEN-KIA7042AF
R81
103/1005
R82
S81 101/1005
D
2 C82
1
104p/16V/1005
3 4
C81 OPEN-JTP1127WEM
OPEN-104p/16V/1005
MAIN PWB(40/46),(42/46)
C
CEC_A
MAIN PWB(42/46)
CEC_O
MAIN PWB(3/46)
STBY_EN
RA
MAIN PWB(23/46)
TA
MAIN PWB(3/46)
IR_IN
MAIN PWB(43/46)
SC_MUTE
+5VSTB +5VSTB +5VSTB
B
R107 R104 R109
103/1005 Open_103/1005 103/1005
MOD1_ID MOD2_ID
R106 R105 R108
Open_103/1005 103/1005 OPEN-103/1005
MAIN PWB ASS'Y(5/46)
[MICRO CTRL]
A
HU-71100006
All location are from 81 to 110
5
4
System Reset
RESETn
+5VSTB
C83 C84
106p/10V/2012 104p/16V/1005
+5VSTB
+5VSTB
R83
OPEN_103/1005
R93
+5VSTB
OPEN_103/1005 U82
5
VCC1
17
VCC2
38
VCC3
40
PB0 (XCK/T0)
41
PB1 (T1)
R84 101/1005 42
PB2 (AIN0/INT2)
43
PB3 (AIN1/OC0)
44
PB4 (SS)
MOSI
1
PB5 (MOSI)
MISO
2
PB6 (MISO)
SCK
3
PB7 (SCK)
9
PD0 (RXD)
10
PD1 (TXD)
11
PD2 (INT0)
12
PD3 (INT1)
13
PD4 (OC1B)
14
PD5 (OC1A)
R95 101/1005 15
PD6 (ICP)
R91 101/1005
16
PD7 (OC2)
C87
6
GND1
18
GND2
OPEN-103p/50V/1005
28
GND3
39
GND4
ATMEGA324P-20AU
PA0 KEY_ADC2 Front Key ADC2
MOD3_ID
PA1 KEY_ADC1 Front Key ADC1
PA2 LED_B Display LED
PA3 LED_R HDD Recording LED
PA4
PA5 MOD2_ID Model_Detect
PA6 MOD1_ID Model_Detect
PA7
PB0
PB1
PB2 CEC_A HDMI CEC Control
PB3
PB4 STBY_EN Stand-by ON/OFF
PB5 MOSI JTAG
PB6 MISO JTAG
PB7 SCK JTAG
4
(No.YA707<Rev.001>)2-17
3
+5VSTB
JP81
MISO
1 2
SCK
3 4
RESETn
5 6
C85 C86
104p/16V/1005 104p/16V/1005
OPEN-HPH-DS06-02
+5VSTB
27
AVCC
37
(ADC0) PA0 KEY_ADC2
36
(ADC1) PA1 KEY_ADC1
MAIN PWB(3/46)
35
(ADC2) PA2 LED_B
34
(ADC3) PA3 LED_R
MOD3_ID
33
(ADC4) PA4
32 MOD2_ID
(ADC5) PA5
MOD1_ID
31
(ADC6) PA6
30
M_SCL
(ADC7) PA7
29
M_SDA
AREF
R89 330/1005 M_SCL
19
(SCL) PC0
R90 330/1005 M_SDA
20
(SDA) PC1
INT_OUT
21
(TCK) PC2
M_RST_N
22
(TMS) PC3 M_RST_N
R94 101/1005
23
(TDO) PC4 AC_DETECT
24
(TDI) PC5 A_RESET
25
(TOSC1) PC6
26
(TOSC2) PC7
RESETn
4
RESETn
R96 000/1005
7
XTAL2
8
XTAL1
Y81
16MHZ/20pF/SMD
2 1
C88 C89
200p/50V/1005 200p/50V/1005
PC0 FLI_SCL1 I2C(to Douglas)
PC1 FLI_SDA1 I2C(to Douglas)
PC2 INT_OUT Douglas Interrupt
PC3 M_RST_N Douglas Chip Reset
PC4 AC_DETECT SMPS AC Detect
PC5 A_RESET AMP Reset Control(to AMP)
PC6
PC7
PD0 RA UART0(to RS232)
PD1 TA UART0(to RS232)
PD2
PD3
PD4
PD5
PD6 IR_IN IR Input
PD7 Scart_Mute Scart Audio Output Mute
3
2-18(No.YA707<Rev.001>)
2
+5VSTB
R97 162/1005 KEY_ADC2
MOSI
R98 162/1005 KEY_ADC1
C90
104p/16V/1005
+5VSTB
+3V3_A
R87 R88
472/1005 472/1005
Q81
MAIN PWB(39/46) FDV301N_NL
3 2
FLI_SCL_0
3 2
FLI_SDA_0
Q82
MAIN PWB(37/46)
FDV301N_NL
MAIN PWB
(3/46),(4/46),(22/46),(23/46)
MAIN PWB(22/46)
INT_OUT R102 103/1005
R103
183/F/1005
+5VSTB
+3V3_A
R99
R100
103/1005
103/1005
M_RST_N
1 Q83
MMBT4401
L : Normal R101
102/1005
H : Reset
2
1
D
C91
104p/16V/1005
C
MAIN PWB
(6/46),(17/46),(22/46),(40/46)
FLI_INT
B
MAIN PWB(6/46)
LPM_RST_N
A
1
hb1_main_0612_3/48_0.0