Mitsubishi HS-U748 Service Manual page 80

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Q5A8
Q5A9
Q5B0
TPCLK
C5J9
D5B5
TP5P0
TP5P1
TP5P2
TP5LM
R5B8
R5B9
R5C0
R5B7
R5G6
R5G7
R5G8
Q5A0
Q5A2
Q5A1
D5C0
D5A9
R5A0
R5A2
R5A1
R5A3
R5A5
TP5LS
TP5LT
R5G1
R5G3
R5G2
TP5SU
TP5RI
TP5TU
Q5A6
Q5A7
C5U0
C5U1
TP5ES
TP5SS
R5S3
R5G5
D5B4
C5S3
R5G4
R5B4
R5B5
TP5LC
R5B6
C5A6
C5A7
IC5A4
C5T3
R5T5
R5T6
JP5A1
MD
CONNECTOR MD t PLAY
4.4V(p-p)
(TIME/DIV 0.5ms)
CONNECTOR MD e PLAY
4.4V(p-p)
(TIME/DIV 10ms)
DRUM MOTOR
MOTOR CURRENT OUT
4
0.1µ
25V
Vcc
0.1µ
0.1µ
7
25V
25V
(+5V)
B0.01µ
GND
25V
6
36
35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19
M56747AFP
VCTL
1
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18
180
PG
1/16W
5
0.47
1/2W
180
HE
HE
HE
1/16W
0.1µ
0.1µ
0.1µ
25V
25V
25V
FG
3
CORE
MOTOR GND
2
510
510
510
1/16W
1/16W
1/16W
N
8
HS-U748
TPDAT
R5F7
R5F8
IC5A1
R5A6
R5E2
R5E7
S5S0
D5A2
Q5B4
TP5SW
R5W0
C5C2
D5A0
R5E0
R5D9
D5R0
R5R4
C5C5
R5E1
R5W1
C5C9
C5C0
R5S4
R5S0
R5S1
R5Z1
C5S0
C5S1
C5S4
R5Z0
R5S6
C5S6
C5T6
C5T5
C5S8
R5L2
C5L0
R5L4
C5S2
C5T8
Q5L0
R5R2
R5L0
TP5C
TP5A
TP4C
C5R1
TP5B
C5S9
R5R3
R5C6
C5S5
TP5SSV
L5A1
R5S7
C5T7
C5T4
R5S8
MC
CONNECTOR MC y PLAY
4.6V(p-p)
(TIME/DIV 0.2ms)
IC5A1 24LC04BT*SN
CAPSTAN MOTOR
IC M63102BFP
180
180
0.063W
0.063W
6
1 U+
F/R 36
7
F/R
SCL
HW
5
2 U-
Vcc 35
8
Vcc (5V)
SDA
108A
3 V+
FGOUT 34
6
FGOUT
470p 50V
4 V-
AOUT 33
MR
HW
56k
108A
5 W+
FGIN 32
10V
0.063W
6 W-
OSC 31
1.8k 0.063W
HW
7 N.C.
SGND 30
108A
COMPARATOR
8 MGND
MGND 29
2200p
1
SGND
3
50V
A2
9 MGND
MGND 28
2
MGND
2
10 MGND
MGND 27
A1
11 MGND
MGND 26
1
A0
20k
35V
12 U
OSCR 25
0.063W
4
13 V
VCTL 24
VCTL
D IN
14 W
N.C. 23
15 N.C.
Vcod 22
16 N.C.
VLIM 21
3
V LIMIT
17 N.C.
Vco 20
5
Vco (12V)
1000p
18 RS
RSm 19
50V
12k 0.063W
0.47 0.5W
TP5F
C5C1
Q5P2
R5R5
R5X8
R5X9
R5R1
R5R6
L5A0
C5E0
C5E1
R5R9
C5E3
C5E2
R5P1
C5E6
R5P0
C5E5
C5E4
R5P2
R5E5
IC5A0
TPEE
R5C7
TP5C1
IC5A4 TA7291S
Vcc
V
REF
8
Vcc
2
8
4
GND
6
Vs
7
START
WP
STOP
LOGIC
EN
H.V.
Reg.
SERIAL
PUMP/TIMING
CONTROL
LOGIC
LOAD
7
OUT1
3
OUT2
DEVICE
DATA
COMP
THERMAL
ADDRESS
RECOVERY
PROTECTION
LOAD
INC
R/W
DATA WORD
2
E PROM
ADDR/COUNTER
9
1
5
IN1
IN2
GND
Y DECODER
SERIAL MUX
DOUT/ACK
LOGIC
D OUT
CG-V
2H
EE
L3
BB
TU-IN
VMUTE
MUTE
EE
I2C-DATA
I2C-CLK
I2C-CLK
I2C-DATA
SAP
AFTV
Q5P1
C5D4
C5D3
Q5A3
R5P6
JP5A3
C5D2
R5B3
D5D0
R5B0
R5B2
R5A9
C5B9
Q5A5
R5A8
X5A1
C5A0
C5B8
Q5B1
TP-RESET
C5B7
R5D4
C5A2
X5A0
R5D5
C5B6
R5D7
R5D6
C5B5
S5B1
R5H0
R5G9
Z5A0
C5V2
TP5RM
R5C1
C5C3
Z5A0 TSOP1833XG1
3
CONTROL
INPUT
100kΩ
CIRCUIT
INPUT
OUTPUT
1
MODE
IN1
IN2
OUT1
OUT2
BAND
DEMODU-
AGC
0
0
STOP
PIN
PASS
LATOR
2
1
0
H
L
CW/CCW
0
1
L
H
CCW/CW
1
1
L
L
BRAKE
∞:
High impedance.
Note:
Input signal activate at "H".
REMOTE HAND UNIT
K01
K02
K03
K04
K05
K06
K09
K10
K11
K12
K13
K14
IC1
M34570M4-095FP
K17
K18
K19
K20
K21
K22
D1
36
1
D2
D0
35
2
D3
K25
K26
K27
K28
K29
K30
3
D4
P13
34
4
D5
P12
33
K33
K34
K35
K36
K37
K38
5
D6
P11
32
6
D7
P10
31
K41
K42
K43
K44
K45
K46
7
D8
P03
30
8
D9/TOUT
P02
29
9
P20
P01
28
P00
27
10
P21/INT
SW
11
RESET
P43
26
OFF:VTR ON:TV
JS3
P42
25
12
CNVSS
JS2
D1
13
XOUT
P41
24
JS1
BATT
EL-1L7
14
XIN
P40
23
1.5VX2
/SID303C
+
15
VSS
P33
22
R1
16
VDCE
P32
21
1.8
R2
P31
20
17
VDD
C1
220
6.3V
18
CARR
P30
19
100µ
Q1
2SD596
/2SC3440
C2
0.47µ
C3
0.1µ
X1
4MHz
KEY No.
No.
KEY NO.
FUNCTION
KEY NO.
FUNCTION
K01
VCR POWER
K25
REC
K26
K02
EJECT
REW
K27
PAUSE
K03
CH
K04
CH
K28
STOP
K05
VOL
K29
DISPLAY
K06
VOL
K30
FF
K07
TV POWER
K31
X2
K08
K32
K09
1
K33
AUDIO/VIDEO
K10
4
K34
CANCEL
K11
5
K35
INDEX –
K12
2
K36
ADJ +
K13
6
K37
INDEX +
K14
3
K38
ENTER
K15
MUTE
K39
MENU
K16
K40
K17
7
K41
VCR/TV
K18
QUICK PROGRAM
K42
K19
PLAY
K43
K20
8
K44
ADJ –
K21
10
K45
K22
K46
9
K23
INPUT
K47
SP/EP
K24
K48
V
S
OUT
GND
K07
K15
K23
K31
K39
K47

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