Nellcor NPB-40 Service Manual page 53

POWER ENTRY
BT2
1
R22
2 0.75A
SELF RESETTING FUSE
3 BAT+
BT1 CR7
CR5
1 MBRS330T3 SMCJ10C
2
3 BAT-
Power Supply Feedback
VBAT
VCC
R2
150K
TP1
R5
150K PWR_FB
CR1 3
1
Q1
1 2N3904S
3
1N914S 2
C5
VBAT 0.1U
VBAT U1B
R3 10
PRE VCC
10.0K
Q
R7 U2A 12
D
82.5K 14 74HC14S
2
1 11
CLK
Q
7 13
CLR GND
C6
0.1U 74HC74S
POWER SWITCH CIRCUIT
VCC VBAT
BTN_PWR
R1
150K
R18 R10 R8
J3 10.0K 10.0K 10.0K
1 BTN_SHIFT
2 BTN_2
3 C3
4 BTN_1 0.1U 2N3904S
5
MEMBRANE SWITCH CONNECTOR
UNUSED GATES
VBAT
VBAT VBAT
U1A
4 14
PRE VCC
5 U2C
Q
14 14
2 74HC14S
D
5 6 9
3
CLK
6 7 7
Q
1 7
CLR GND
74HC74S
034310
POWER SUPPLY CIRCUIT
TP53
VBAT VBAT
+
C2 C23 C1
TP2
U3 330P 47U 0.1U
1 1 5 5 10V
VC VIN
7343
PWR_ON 4 4 8 8 VSW
S/S VSW
R4
6 6 2 VFB 49.9
GNDS FB PLACE C23 AND C1
CR6
C11 7 7 3 3 NEAR T1 PIN 2
GND NFB
0.1U
C28 LT1373CS8
1000P
HIGH
+ 5%
C16 R13 SEPARATE VIAS CURRENT
10U 4.99K TO GROUND PLANE
16V
FOR PINS 6 & 7
6032
R9 R12
11.5K 36.5K
TP4
VBAT C31
1000P
14 VBAT
9 PWR_ON
U2B
14
74HC14S
8 3 4 SW_VBAT
7
7
R14
TP7
15.8K
BAT_VOLT
TP5
R17 C14
47.5K 0.1U VCC
WD_RST
U6
TP52 MAN_RST 1 1 8 8 R6
PBRST VCC
10.0K TP38
2 2 7 7
TD ST
3 3 6 6
TOL ~RST
4 4 5 5
GND RST N/C
LTC1232
TP3
R11
3 3 150K
Q2 1 1 PWR_DOWN
2 2
NOTES:
1. ALL CAPACITORS ARE 10% 50V 1206 PACKAGE
2. ALL RESISTORS ARE 1% 1/8W 1206 PACKAGE
VBAT VBAT
U2D U2E U2F
14 14
74HC14S 74HC14S 74HC14S
8 11 10 13 12
7 7
T1 RAW+10V
LPE-4841 CR3
2 1
2 6
+
MBRS130
C8
7 3
22U VCC
CR2 20V
7343
5 2 1
MBRS130 +
C7
4 4 47U
10V
7343
8 8
+
C4 RAW-5V
CR4 47U
1 1 10V
1 1 2 7343
MBRS130
VCC
+
C18 C12
0.1U 47U
5% 10V
7343
RP2
VREF U4 120
1 1 60 60 RAD0 AD0
PWR AD0
AD1 59 59 RAD1 9 8 AD1
37 37 58 58 RAD2 10 7 AD2
VPP AD2
13 13 57 57 RAD3 11 6 AD3
VREF AD3
12 12 56 56 RAD4 12 5 AD4
ANGND AD4
55 55 RAD5 13 4 AD5
AD5
REDDC 6 6 AD6 54 54 RAD6 14 3 AD6
ACH0/P0.0
REDAC 5 5 53 53 RAD7 15 2 AD7
ACH1/P0.1 AD7
IRDC 7 7 52 52 RAD8 16 1 AD8
ACH2/P0.2 AD8
IRAC 4 4 51 51 RAD9 AD9
9 8
ACH3/P0.3 AD9
RSENS 11 11 50 50 RAD10 10 7 AD10
ACH4/P0.4 AD10
BAT_VOLT 10 10 49 49 RAD11 11 6 AD11
ACH5/P0.5 AD11
8 8 48 48 RAD12 12 5 AD12
ACH6/P0.6 AD12
9 9 47 47 RAD13 13 4 AD13
ACH7/P0.7 AD13
46 46 RAD14 14 3 AD14
AD14
R24 LEDDIS 19 19 45 45 RAD15 15 2 AD15
P1.0 AD15
221
IR/RED 20 20 ADV 62 62 16 1 ALE
P1.1 ALE/
RWD_RST 21 21 RP1 120
P1.2
R25 121
PWM1 22 22 61 61 RRD-L RD-L
P1.3/PWM1 RD
PWM2 23 23 40 40 RWR-L R26 121 WR-L
P1.4/PWM2 WRL/WR
30 30 41 41
P1.5/ BREQ
WRH/BHE
IRLED/AV 31 31 63 63
P1.6/ HLDA INST
32 32
P1.7/ HOLD
28 28 SAMPRED
HSO0
43 43 29 29 OFF/ON
READY HSO1
RST-L 16 16 34 34 SAMPIR
RESET HSO2
3 3 HSO3 35 35 PWR_DOWN
NMI
2 2 26 26 LCD_EN
EA HSI2/HSO4
RAMEN-L 64 64 27 27 IR_OUT
BUSWIDTH HSI3/HSO5
PHOTOI 24 24
HSI0
25 25 65 65 CLK_OUT
HSI1 CLKOUT
TP13
TXD 18 18 67
P2.0/TXD XTAL1
RXD 17 17 66
P2.1/RXD XTAL2
BTN_2 15 15 Y2
P2.2/EXTINT
BTN_1 44 44 R15
P2.3/T2CLK
121
BTN_SHIFT 42 42 P2.4/T2RST
PWM0 39 39 14 14 10MHZ Y2 IS USED ONLY IF
P2.5/PWM0 GND1
REDLED/AV 33 33 36 36 HC49S Y1 IS NOT AVAILABLE
P2.6/TWUP-DN GND2
ZERO-L 38 38 68 68
P2.7/T2CAPT GND3 Y1
1 4
80C196KC
C29
10MHZ
0.1U
ATP-SM
VCC VCC C10 C9
22P 22P
C30 C17 C32 C33
1000P 0.1U 1000P 0.1U
5% 5%
PLACE BY U4 PIN 14 PLACE BY U4 PIN 36
Note: Populate U12 with 8Kx8 (143101) or 32Kx8 (143102).
UNLESS OTHERWISE NOTED.
UNLESS OTHERWISE NOTED.
Note: To populate U5 with 64Kx16 (143003) or 128Kx16 (143010)
To populate U5 with 256Kx16 (143011,171259), populate J4.
ADDRESS DECODING
U8
TP51
1 15
A Y0
2 14
B Y1
WR-L 3 13 DE00 - DFFF
C Y2
12 EXOUTEN-L
Y3
11
Y4
6 10
G1 Y5
4 9
G2A Y6
5 7
G2B Y7
ADDR9
74HC138 - SMT
ADDR10
TP41
ADDR11
ADDR12 U7C
ADDR13 9 E000 - FFFF
ADDR15 10 8 RAMEN-L
ADDR14 11
74HC10S
TP40
U7B
3 U7A
4 6 1
5 2 12 ROMEN-L
13
0000 - DFFF
74HC10S
VCC VCC VCC 74HC10S
ROM_DIS-L
TP39
C35
1000P
C24 C20 R20
5% 0.1U 0.1U 10.0K
VCC
U10
AD0 2 2 19 19 ADDR0
1D 1Q
AD1 3 3 18 18 ADDR1
2D 2Q
AD2 4 4 17 17 ADDR2
3D 3Q
AD3 5 16 16 ADDR3
4D 4Q
AD4 6 6 15 15 ADDR4
5D 5Q
7 7 14 14 ADDR5
AD5 6D 6Q
AD6 8 8 13 13 ADDR6
7D 7Q
AD7 9 9 12 12 ADDR7
8D 8Q
ALE 11 11 VCC VCC VCC
C
ADDR_TRI 1 1
OC
TP54 74HC573S
C34
R21 C22 C19 1000P
5%
10.0K 0.1U 0.1U
U11
AD8 2 2 19 19 ADDR8
1D 1Q
AD9 3 3 18 18 ADDR9
2D 2Q
AD10 4 4 17 17 ADDR10
3D 3Q
AD11 5 5 16 16 ADDR11
4D 4Q
AD12 6 6 15 15 ADDR12
5D 5Q
AD13 7 7 14 14 ADDR13
6D 6Q
AD14 8 8 13 13 ADDR14
7D 7Q
AD15 9 9 12 12 ADDR15
8D 8Q
ALE 11 11
C
1 1
OC
74HC573S VCC
C36
+
1000P
C27 C25
U12 47U 5% 0.1U
ADDR7 10 10 28 28 10V
A0 PWR
ADDR6 9 9 7343
A1
ADDR5 8 8
A2
ADDR4 7 7
A3
VCC ADDR3 6 6
A4
ADDR2 5 5 11 11 AD0
A5 O0
ADDR1 4 4 12 12 AD1
A6 O1
ADDR0 3 3 13 13 AD2
A7 O2
ADDR8 25 25 15 15 AD3
A8 O3
R23 ADDR9 24 24 16 16 AD4
A9 O4
TP56
10.0K ADDR10 21 17 17 AD5
A10 O5
ADDR11 23 18 18 AD6
A11 O6
ADDR12 2 19 19 AD7
A12 O7
BIGRAM 26
CE2/A13
1
NC/A14
WR-L 27 27
WE
RD-L 22 22
OE
RAMEN-L 20 20 14 14
CE GND
5565S
STATIC RAM
VCC
+
C13 C26
0.1U 47U
10V
U5
ADDR1 24 A0 44 7343
PWR
ADDR2 25 A1
ADDR3 26 A2
ADDR4 27 21 AD0
A3 D0
ADDR5 28 A4 20 AD1
D1
ADDR6 29 19 AD2
A5 D2
18 AD3
ADDR7 30 A6 D3
ADDR8 31 17 AD4
A7 D4
16 AD5
ADDR9 32 A8 D5
ADDR10 35 A9 15 AD6
D6
VCC ADDR11 36 14 AD7
A10 D7
ADDR12 37 A11 11 AD8
D8
ADDR13 38 10 AD9
A12 D9
ADDR14 39 A13 9 AD10
D10
ADDR15 40 8 AD11
A14 D11
7 AD12
R16 41 A15 D12
TP27
10.0K 42 6 AD13
N.C. D13
5 AD14
D14
ROMEN-L 3 4 AD15
CE D15
RD-L 22 OE
BIGROM 43 PGM 34
GND1
2 12
VPP GND2
J4 27C1024
0
EPROM
parts, do not populate location J4
SAMPRED
PHOTOI
SAMPIR
EXTERNAL OUTPUT PORT
U9 IR/RED
AD0 2 19 BEEP_1 LCD_EN
1D 1Q
AD1 3 18 BEEP_2 LCD_CE
2D 2Q
AD2 4 17 LCD_DATA
3D 3Q
AD3 5 16 REDLED/AV
4D 4Q
AD4 6 15 LCD_CE
5D 5Q
AD5 7 14 LCD_CLK PWM1
6D 6Q
AD6 8 13 LCD_DATA
7D 7Q
AD7 9 12 LCD_LIGHT
8D 8Q
11
EXOUTEN-L VCC
CLK
1
OC
74HC574S
C21
0.1U
TEST POINTS
ADDR0 AD0
TP30 TP9
ADDR1 AD1
TP43 TP11
ADDR2 AD2
TP31 TP10
ADDR3 AD3
TP44 TP14
ADDR4 TP32 AD4 TP15
ADDR5 AD5
TP45 TP17
ADDR6 TP33 AD6 TP20
ADDR7 AD7
TP46 TP19
ADDR8 TP34 AD8 TP18
ADDR9 AD9
TP47 TP16
ADDR10 AD10
TP35 TP12
ADDR11 AD11
TP48 TP22
ADDR12 AD12
TP36 TP21
ADDR13 AD13
TP49 TP25
ADDR14 AD14
TP37 TP24
ADDR15 TP50 AD15 TP29
ALE TP6
RD-L
TP8
WR-L
TP42
SCOPE PROBE GROUND
TP55
USE J2 PINS FOR TEST POINTS OF VCC, RAW+10V, RAW-5V
SERIAL INTERFACE
VCC
R19
10.0K
J5
1
TXD 2 CLINICAL SERIAL
RXD 3 DATA CONNECTOR
4
5
TP23 TP26
FACTORY TEST
POGO DATA CONTACTS
LCD BOARD INTERFACE
VREF VCC
J2
1 2
REDDC
3 4
REDAC
5 6
IRDC
7 8
IRAC
9 10
RSENS RAW+10V
11 12
RAW-5V
13 14
15 16
17 18
19 20
PWM0 LEDDIS
L1
BLM31B06
FSAMPRED LCD_LIGHT
L5
FPWM2 PWM2
BLM31B06
FSAMPIR J1
L2 1 2 IR_OUT
BLM31B06
3 4 L4
5 6 FIRLED/AV IRLED/AV
7 8 BLM31B06
9 10 BEEP_2
11 12 BEEP_1
13 14 LCD_CLK
15 16 ZERO-L
17 18
FPWM1 19 20 FOFF/ON OFF/ON
L3 L6
BLM31B06 BLM31B06
Figure S4-3
CPU PCB Schematic Diagram
FOS S5-5