Kenwood DPC-781 Service Manual page 8

P Q R
5.7V
+B
5.6V
+B
3.1V
Q4
R323 R317 R318 R319 R320
1.2K 1.2K 1.5K 1.8K 2.4K
5.5V
D11
S18
0V
REPEAT
Q7
D24 D8
3.1V S17
+B
REMOTE
X
P. MODE A1
SENSOR
3
S16 X
R341 OUT
100
R329 2
2.7V
+B VCC
X 1
D9 5.6K R315
GND
DASC 470K
+
D7
12.6V
2.7V
+B +B
D30
Q24
C304
0.022
2.0V
3.0V 31
BATTV1
2.7V 0V 0V 2.7V
32
BATTV2
33
HPKEY
34
NC 2.7V
35
ADON
36
AVDD
37
AVREF
38
SLTSW
39
DCDCON
40
VSS
IC3
41
ADPT
u-COM
42
CHRGOK
43
CHRG
2.7V 44
XRST
0V
45
DMUTE
46
RMUTE
47
TEST
2.6V
48
NC
49
PSW
2.7V
50
HPMUTE 2.4V
R302 R303 R304
33K 33K 33K
+B +B
+B +B
S T U
R419 10K
R422 2.2V
R401 22K C401
+B +B
Q44 2.2 1
R405
LIMITTER
5.6K
Q41
+B +B
B.BOOST
SW
Q42
R406
5.6K
R402 C402
B.BOOST
22K 1
SW
Q40
B.B ON:0V
OFF:2.7V
X2
5.00MHz
C313
0.1
+B
+B
R340
22K
IC7
1 20
( 31 ) D0 VSS
2 19
( )
32 D1 D3 30
3 18
R308 ( 33 ) XWE D2 29
4 17
470K ( 34 ) XRAS XCAS 28
2.7V
5 16
( )
35 A9 XOE
6 15
( 41 ) A0 A8 36
7 14
0V (
42 ) A1 A7 37
8 13
( 43 ) A2 A6 38
100
2.7V SQSO 100 9 12
2.7V ( 44 ) A3 A5 39
99
XLT 99
0V 10 11
98 +B VCC A4 40
XQOK 98
97
XWRE 97
96
XEMP 96 +B
95
XWIH 95
94
LIDSW
93 2.7V
LDON
92 2.8V
HOLD
2.7V
91
LINE
90 2.8V
PLUG ON
2.6V
89
SENS 89
88 2.6V C422
DATA 88 HOLD 47u4
OFF
87 2.6V SW
S3 +
CLOK 87 1
2.7V VCC
86
XLAT 86
2
( )
85 2.7V R348 R349 98 XQOK
SHOCK 85
3
2.8V 1K 47K
84 ( 97 ) XWRE 2.7V
LED
0V
4
83 ( 96 ) XEMP
NC
82 0V 5
( ) IC6
NC 95 XWIH
.
81 1.4V
NC 6 SHOCK
C176
PROOF
0V
7
( 21 ) CHDT
8
EBLK
1.2V 9
CLK
10
LED GND
ON/OFF 11
1.3V 1.4V
Y DATA
Q38
+B
+B
V W X
D27
PHONES
AMP
0V
IC4 R421
100K
J2
1.5V C423
1 16
PWSW MUTE MUTE R415
2.2
0.1 Q19
1.0V 2
INA R416
15 1.0V
OUTA
1.0V 3
2.2
INC 14
PWG
1.0V
4
INB
13 1.0V
1.0V 5 OUTC
VREF
+ 12 1.0V
OUTB
11
6 VCC +B X
PREG
D28
C405
C407
3.3u4 1.0V 7
4.7u6.3
VRCO 10 1.8V
+ RFCO
+ +
C406
4.7u6.3 1.8V
8 9
RFO BEEP
+
X
+B C311
C433 R431 R433 X
0.01 A
4.7u4 680 22
+
MUTE
Q45
X
J4
0V Q43
MUTE
CONTROLLER
X
2.7V 2.3V R345
Q46
X 3.9K
Q35 Q31,33,35,39
C434 R432 R434
BUFFER
4.7u4 680 22
+
+B
R307
X
Q39
1K
IC8 J3
IC7,8
R335
DRAM 1 20 10
( 31 ) D0 VSS
R339
2 19
( ) 47K 2.9V R336
32 D1 D3 30
3 18
( 33 ) XWE D2 29 10
4 17
( 34 ) XRAS XCAS2 27
Q33
5 16
( )
35 A9 XOE
6 15 R344
( 41 ) A0 A8 36
10K
7 14
(
42 ) A1 A7 37
D51
2.0V
8 13
( 43 ) A2 A6 38
9 12
( 44 ) A3 A5 39 Q31
10 11
A2
+B VCC A4 40 X
B
R211
0V 470 3
OUT
Q36
2.9V R350 2
+B +B VCC
100
+
1
GND
Q36
OPTICAL OUT
POWER SUPPLY
2.7V
ON/OFF
33
2.7V
33
XWE 33
32 J1
32 1.1V
D1 32 +B
31
31 1.1V
D0 31
30
30 1.1V
D3 30
29
29 1.1V
D2 29
28 2.7V BATTERY
XCAS 28
2.7V
27
XOE/XCAS2 27
26 2.7V
SCK 5
2.7V
25 CN5
SDTI 4
24 2.7V
1
XLT 99
23
+B 2
TEST
3
P1
2.7V
C2
0.1
+B
+B
+B
Y Z AA
Q1,5,40,43 : DTA124EUA D1
IC1 : CXA1982Q
IC2 : CXD3009Q Q2,7,11,15,19,20,23,31, D2,6,11,13-15,27
D3
IC3 : uPD78063GF-138 32,34,35 : DTC124EUA
D5,12,29
IC4 : LA4800V Q3 : XP161AO390PR
D7-9,24,28,30
IC5 : BH6509K or Q4,17 : 2SA1576A(R,S)
Q6,9,44 : 2SD2153(V,W) D25
BH6504K
Q8 : 2SB1424(Q,R) D26
IC6 : RL5C356
IC7,8 : MN41V4400TT-08 or Q10,37,38 : 2SC4081(R,S) D31
HEADPHONE D51
MN41V4400TT-07 Q12,13,41,42 : DTC114TUA
OUT
IC9 : NJM2904M Q14,22,33,39 : 2SB970
VREF IC10 : NJM2903M Q16,45,46 : DTC323TK
Q18,21,24 : DTA114TUA
Lch IC11 : RN5RG29AA-TR
Q36 : DTA114EUA
IC12 : XC6383B301MR
Rch
IC13 : PST9124NR
+B
DPC-981 (X32-348X-XX)
DESTINATION Q35,
UNIT No. A C B D Q43 C311 C312 R26 R28 R315 R341 R345 D28 D31 A1 W1
COUNTRY ABB. 39
U.S.A. K
0-11 NO YES 3.3 YES NO YES NO NO YES YES
CANADA P
GENERAL MARKET M 0-21 YES NO YES YES YES 2.2 NO YES YES
U.K. T NO YES NO YES NO NO
2-71 NO 3.3 YES NO
EUROPE E
DPC-781 (X32-348X-XX)
DESTINATION Q35,
UNIT No. A B C D Q43 C311 C312 R26 R28 R315 R341 R345 D28 D31 A1
COUNTRY ABB. 39
JAPAN J 0-00 YES 3.3 YES NO
NO YES YES NO NO YES NO
GENERAL MARKET M2 0-22 NO NO 2.2 NO YES NO YES NO
NO
CANADA P 1-01 YES NO NO YES YES 3.3 YES NO YES NO
LINE OUT
Rch
DPC-782 (X32-348X-XX)
Lch DESTINATION Q35, C311, R315,
UNIT No. A C D B Q43 R26 R28 R341 D28 D31 A1 W1
COUNTRY ABB. 39 312 345
GND
U.S.A. K
LINE CANADA P 0-12 3.3 YES NO YES
YES NO NO YES YES NO YES YES YES
AUSTRALIA X
GENERAL MARKET M 0-23 2.2 NO YES NO
DPC-TR1 (X32-3480-00)
DESTINATION
Q35, C311, R28,315, D28,
UNIT No. A D B C Q43 R26 R341 A1 W1
COUNTRY ABB. 39 312 345 31
JAPAN J 0-00 NO YES YES NO NO 3.3 YES NO NO NO YES
REMOTE
CONTROL
GND
KEY
ED1 (B38-0161-05)
DATA
COMMON
( 1 )
D.A.S.C. PGM SHUF B.BOOST 1
( 2 )
OPTICAL
OUT
( )
3
( 4 )
SEGMENT
D.A.S.C. PGM SHUF B.BOOST 1
AC ADP.
4.5V
+B
SWITCH
GND
ALKALI : 3.0V
Ni-MH : 2.4V
Q12
X X
C D
+B
+B
LCD BACK LIGHT UP DOWN PLAY STOP
DPC-781/782/981 (K)
AB AC AD
: UDZ5.1B
: RB451F
: DAP202U
: MA111
CAUTION: For continued safety, replace safety critical
: RB450F
components only with manufacturer's recommended parts
: U2FWJ44N
(refer to parts list). indicates safety critical components.
: MBRA130L
: UIBC44 For continued protection against risk of fire, replace only
: DA204U
with same type and rating fuse(s). To reduce the risk of
electric shock, leakage-current or resistance measurements
shall be carried out (exposed parts are acceptably insulated
from the supply circuit) before the appliance is returned to
the customer.
SIGNAL LINE
GND LINE
+B LINE
The DC voltage is an actual reading measured with a high
impedance type voltmeter. The measurement value may
vary depending on the measuring instruments used or on
the product. Refer to the voltage during PLAY with DASC
OFF(at the normal speed) unless otherwise specified; The
value shown in ( ) is the voltage measured at the moment
of STOP.
W1
YES
NO
YES
DTC323T 2SD2153
2SB970
2SC4081
NJM2903M DAP202U
NJM2904M DA204U
RB451F
2 C
XC6383B301MR
PST9124NR
2 C
CXD3009Q RL5C356
LA4800V
DPC-781/782/981
Y22-7460-11