Kenwood KRC-778R Service Manual page 12

P Q R
91
95 5V
0V
0V
96
4.9V
0V
0V or 5.0V
5V 0V
0V
R252
R251 47K
R253 R254 R257
47K 47K 47K 76
ST TYPE0
0V or 5.0V
IC14 0V R255 R256 R258 0V
5V
47K 47K 47K 77 5V
0V
E2P ST TYPE1
0V 0V or 5.0V
0V 78
ROM 5V
NC
0V 5V 5V
79
NC 0V 0V
5.0V 80
NC 0V or 5.0V
81
VDD
5V
82
82 SVR 0V
83
83 PRE MUTE
R334 22K
84
84 P MUTE
R282 1K 5V
85
CASS/SRM
0V
R259 4.7K
86
86 ANT CONT
R260 1K
87
87 AM+B
R261 1K
88
88 FM+B
CP10 4.7K
5V
0V
89
89 P CON IC1
5V
90
90 ACC DET 0V
u-COM SYSTEM CONTROL
93
5V
0V
R264 2.2K 91
REMO
R266 1K 92 5V
92 P ON 0V
93
5V
0V BU DET
0V
94
TEST
R267 1K 95
95 SDA IC2
96
R270 5.6K R268 1K 5V
96
SCK IC2
0V
R269 5.6K
97
97 MUTE
R271 100K 98
SW 5V 5V
99 0V
5V
NC
0V 100
NC 5V
0V
5V
0V
5V
5V 0V
0V
5V
5V 0V X2
0V
5.0V
X1
0V
C251 0.01
C252
47u6.3
+
RST
L8
4.7uH
C256
1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
CN3
S T U
5V 5V
0V 0V
R305 2.2K
54
R307 4.7K
53
Q43 IC13
52
SUB MOTOR
R318 47K
VOLTAGE SW
5V
51
0V
5V
5V
0V
0V
50 D45 D46
L CE 50
49
P-5V 49 13.0V
48
ILL ON 48
5V
5V
CP3 2.2K Q43
0V 0V 0.6V
5V 47
10K
0V PLL CLK 47
46
PLL DATA 46
5V
45 47K
PLL CE 45
0V
R303
5V 44 180K
BEEP
0V
43
DIMMER 43
10
R302
1M
42 R304 1K
L CLK 42
41
L DATAS 41
40
40
L DATAL
R301
L9
39 47
CH CLK 39
38
DATAH 38
5V 37
DATAC 37
0V
36
AVREF1
5.0V
35 R297
AM/IF 35
4.7K
0V-5.0V
5V 34
0V EXT.AMP 34
33 0V
AVSS
32
NC
31
NC
R296 1K
30
R REEL 30
5V R295 1K
29
F REEL 29
0V
R294
28
S METER
C257
0V-4.4V
R291
0V-5.0V
R293 4.7K
27
NOISE 27
0V or 5.0V W32
5V
5V
0V 0V
R292 4.7K
26
SRM SW1
R321
0.5V
470
1.6V
3.8V
R322
100K
PH1
5.0V W31
5V
0V
G
D81
PAN 5V
R286 R288
47K 22K
Q45
W11
91
51
43
40
IC15 5.0V
41
3 2
NC IN
0Vor5.0V RST
RST
4 1
D82
GND OUT
0V
50
RST IC
42
V W X
L1 52mH
L3 D61
4.7uH
L2
Q89
R166
Q87,89
Q87
FM+B 1K
R168
22K
88 22K
22K L4
MECHA MOTOR DRIVER
Q88 4.7uH
R165
Q86,88
SRW:6.8V
Q86 1K
AM+B
CAS:3.9V 0.6V R167
22K
22K
87
22K
0V
0.6V
9
5.0V 53
E Q82
22K
52
FORCED/ 22K
WIDE SW
13.0V
59
28
14
14
12
R174 2.7K
10
L6
35
4.7uH
VR1
SEPARATION
D79
L5
4.7uH
D78
D77 SRM MECHA
R191 CN2
FPC
100K SUB+
10 5
D76 SRM DET
58 4
GND
M
3
SW2
D75
55 2
SUB-
3 1
R192
470
D74
CN8
11 TGND (X14-618X-XX) (B/2)
D73 10 FM+B
H
D72
14 9 SMETER
27 8 NOISE
54 7 AFC
CN1 6 DGND
R215
13 VDD 5 PON5V
10K
12 D.GND
9 4 RDSOUT
57 3 RDAT 3.9V
56 2 QUAL
C210 3.9V
11 NC 17 1 RCLK
6P
R342 3.9V
1K
R211 0V
10 REMO
82K
R339
D71
1K
9 LOCK SW R208
R340 15K
1K
8 DIMMER
C203
R336
1K R204 1000P
7 L DATAL
10K
R341
R201
1K
10K
6 L DATAS
Q91
R335
1K
NOISE
5 RESET
DET
R337
BUF
1K
4 L CE
R338
470
3 L CLK
2 ILL-G
1 ILL+B
Y Z AA
(X14-618X-XX)
WH1 MODEL UNIT
A D B C E G H F I IC1
NAME No.
1
KRC-PS978R 2-70 YES YES YES YES NO YES UPD784218GC105
ANT
KRC-878R 2-71 NO YES NO YES NO YES UPD784218GC105
KRC-778R/RY 2-72 NO NO NO YES NO YES UPD784217GC103
2
KRC-778RV/RYV 2-73 NO NO NO YES NO YES UPD784217GC103
A1
KRC-PS988R 0-21 YES YES YES YES NO YES UPD784218GC105
KRC-X858 0-11 YES YES NO NO YES YES UPD784217GC103
1
RF GND
KRC-888 0-22 NO NO NO NO YES NO UPD784217GC103
2
FM ANT IN KRC-708 0-12 NO NO NO NO YES NO UPD784217GC103
3 D38, C95,
MODEL D11- C7-
AM ANT IN A1 D35 C81 C132 C133
NAME 18 39 10 162,164
4
FM+B KRC-PS978R X86-3222-70 NO NO YES YES C90-2822 YES 47u10 2.2u50
KRC-878R X86-3222-70 NO NO YES YES C90-5242 YES 100u10 1u50
5
AM+B KRC-778R/RY X86-3222-70 NO NO YES NO C90-5242 YES 100u10 1u50
6
KRC-778RV/RYV X86-3222-70 NO NO YES NO C90-5242 YES 100u10 1u50
N.C.
7 KRC-PS988R X86-3222-70 YES YES NO YES C90-2822 YES 47u10 2.2u50
N.C.
KRC-X858 X86-3100-10 YES NO YES YES C90-5242 NO 100u10 1u50
KRC-888 X86-3100-10 YES NO YES NO C90-5243 NO 100u10 1u50
KRC-708 X86-3100-10 YES NO YES NO C90-5243 NO 100u10 1u50
8
IF SELECT
9
RDS OUT
MODEL R23,24, R33,34, R113,181,
10
R104 R251 R252 R253 R254 R255 R256
REQUEST NAME 37,38 47,48 293,297,307
11
KRC-PS978R 2.2K NO YES YES YES NO NO YES NO YES
K2I VTH
KRC-878R 22K YES YES YES NO YES YES NO NO YES
KRC-778R/RY 22K YES YES YES YES NO YES NO NO YES
12
KRC-778RV/RYV 22K YES YES YES NO YES NO YES YES NO
VCO GND
KRC-PS988R 2.2K NO NO YES NO YES NO YES NO YES
13 KRC-X858 2.2K NO YES NO NO YES NO YES NO YES
FM SD OUT
KRC-888 22K YES YES NO NO YES YES NO NO YES
14
FSD OUT
KRC-708 22K YES YES NO YES NO NO YES NO YES
MODEL R280, W1- W5, W7, W21,22, CN8,
R291 R294 R329 VR1 W33
15
NAME 325,326 4 6 8 31,32 9
FM DET OUT
KRC-PS978R NO 120K 27K YES YES NO NO YES NO YES YES
16
IF MODE OUT/
KRC-878R NO 120K 27K NO YES NO YES NO NO YES YES
AM DET OUT
KRC-778R/RY NO 120K 27K NO YES YES NO YES NO YES YES
17
COMMON +B KRC-778RV/RYV NO 120K 27K NO YES YES NO YES NO YES YES
KRC-PS988R NO 120K 27K YES YES NO NO YES NO NO YES
KRC-X858 NO 160K 22K NO NO NO YES NO YES NO YES
KRC-888 YES 160K 22K NO NO YES NO YES YES NO NO
18
IF GND KRC-708 YES 160K 22K NO NO YES NO YES YES NO NO
VR1
100K
19 (X14-618X-XX)
HI UP ADJ
20 IC1 : D1
Q1-6,21,24,25,37,55,57,60,61
45 PLL CE
21 IC2 : TDA7400 : 2SC2412K (2SD601A) D3,22,72
46 PLL DATA
IC3 : M5237ML Q18,32,35 : KRC104S (DTC144EK) D5
22
47 PLL CLK IC4 : TDA7386 (UN2213) D6,7,50,51
23
IC5 : TDA7401 Q19,30,36,71 : KRA103S (DTA124EK) D11-18,35,38 : MIF60
PON 5V
IC6 : (UN2112) D21,75
IC7-9,12 : NJM4565M-TE2 Q20,22 : 2SB1565F(E,F) D31
24
D GND IC10 : TC74HC02AF Q23,29,45,58,59,62 D32,39,40,44 : 1SR139-400
IC11 : TDA7479D : 2SA1037K D33,36
IC13 : B6238A Q26,28 : 2SB1277(Q,R) D37
IC14 : BR24C01AF or Q27,43,51 : KRC107S (DTC114YK) D41,52,71,82 : DAN202K (MA152WK)
M24C01-WMN6T (UN2214) D42
IC15 : S-80830ANNP Q31 : DTC114EK (UN2211) D43,56
Q33 : 2SD1760 D45
Q38,42,56 : 2SB1443 D46
Q39 : DTA123JK D53,55
Q40 : DTC124EUA (UN5212) D61
Q41 : DTC114YUA (UN5214) D73,74,76-79 : KDS226 (DA204K)
Q44,92 : DTA124EUA (UN5112) D81
Q72,82,86,87 : KRC103S (DTC124EK)
SIGNAL LINE
(UN2212)
GND LINE
Q88,89 : 2SB1188(Q,R)
B LINE
Q91 : 2SC4081 (2SD1819A)
B LINE
Q93 : DTC114TK (UN2215)
C212 C211
R214 10K 120P 470P
CN9
11 TGND
R212
10 FM+B
22
IC12
IC12
NOISE
1 8 7.9V DET
OUT +B
0V
2 7 3.9V 9 9 SMETER
IN- OUT R210 C209 9 8
2.7K 1200P TSEL FILOUT 8 8 NOISE
3 6 3.9V
IN+ IN- 10 7
TM ARI 7 7 AFC
4 5 3.9V
11 6 0V
GND IN+ EXTRES GND 6 DGND
4.9V 12
R221
VCC 5 4.9V
OSEL 5 PON5V
C206 C205 C223
C224 10
2.4V
82P 470P 10P 13
R206 4 270P
OSC1
10K MPX 4 RDSOUT
C221
2.4V C222
R205 10P 14 3 3 RDAT
10u6.3
OSC0 3
5.6K C208 VREF 2 2 QUAL
15
1200P T57 2 1 1 RCLK
RDDA
C201 NOISE DET 16
1
OUTPUT RDCK
8200P QUAL
5V
CONSTANT SW
0V
10K IC11
Q93
RDS
Q92 DEMODULATOR
I
5V 5V
0V 0V
KRC-778R/RV/RY/RYV,878R,PS978R
AB AC AD
CAUTION: For continued safety, replace safety
IC6
critical components only with manufacturer's
TC7662BEOA
recommended parts (refer to parts list). indicates
NO
NO
safety critical components. For continued protection
NO
against risk of fire, replace only with same type and
TC7662BEOA
ICL7660SIBA rating fuse(s). To reduce the risk of electric shock,
NO
leakage-current or resistance measurements shall be
NO
carried out (exposed parts are acceptably insulated
from the supply circuit) before the appliance is
C142 C257
returned to the customer.
22u25 1000P
47u10 1000P
NO 1000P
NO 1000P
22u25 1000P
47u10 4700P
NO 4700P
NO 4700P
R259, R279,
333 327,328
NO YES
NO YES
NO YES
NO YES
NO YES
YES YES
YES NO
YES NO
J2
E63-0854(GOLD)
E63-0853
E63-0853
E63-0853
E63-0854(GOLD)
E63-0854(GOLD)
E63-0853
E63-0853
: RD6.8MW
: MA3062-M
: DAP202K (MA152WA)
: DAP202U (MA142WA)
: MA3062WA
: RM10ZLF
: MA4056 (N)-M
: MA4062 (N)-M
: MA3220-H
: MA3056-M
: MA3075-M
: MA3036-H
: MA3110-L (HZM11N (B1) )
: IMSA-6801
: MA3047-M (HZM4.7N (B2) )
(X13-978X-XX)
MODEL UNIT
NAME No.
KRC-PS978R
0-10
KRC-X858
KRC-778R/RY
KRC-778RV/RYV
KRC-PS988R
0-11
KRC-878R
KRC-888
KRC-708
(x13-978X-XX)
15 S.GND
ILL+B 13 14 ILL+B
ILLMG 12 13 ILLMG
L CLK 11 12 L CLK
X13-
CN1
L CE 10 11 L CE
RESET 9 10 RESET
2/2
L DATAS 8 9 L DATAS
L DATAL 7 8 L DATAL
A
DIMMER 6 7 DIMMER
LOCK SW 5 6 LOCK SW
REMO 4 5 REMO
NC 3 4 NC
DGND 2 3 DGND
VDD 1 2 VDD
1 NC
KRC-PS987R/PS988R (1/2)
KRC-878R/858/888/708 (1/2)
KRC-778R/RY/RV/RYV (1/2)