Panasonic SA-AK343P Instructions for use

nSYSTEM
SC-
A
K343 (P) Music center: S
A
-
A
K343 (P)
Speaker: SB-
A
K340 (P)
(Refer to the original service manual for information of the technical
specifications.)
1 Notes 3
2 Illustration of IC's, Transistors and Diodes (Updating) 3
3 Schematic Diagram (Updating) 5
3.1. (B) Main Circuit 5
3.2. (C) Panel Circuit 10
3.3. (D) Transformer Circuit 11
©2006 Matsushita Electric Industrial Co. Ltd.. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
SA-AK343P
Colour
(S) .... Silver Type
Notes:
1. Specifications are subject to change without notice. Mass and
dimensions are approximate.
2. Total harmonic distortion is measured by the digital spectrum
analyzer.
3.4. (E) Power Circuit 12
4 Printed Circuit Board (Updating) 15
4.1. (B) Main P.C.B. 16
4.2. (C) Panel P.C.B. 17
4.3. (E) Power P.C.B. 18
5 Exploded Views (Updating) 19
CD Stereo System
Please use this manual together with the service manual for Model No. [SA-AK340P/PC-S, Order No.
MD0510381C1].
Specifications
CONTENTS
Page Page
ORDER NO. MD0602035A1
A6

5.1. Cabinet Parts Location 20
5.2. Deck Mechanism Parts Location (RAA4502-1S) 22
5.3. Packaging 23
6 Parts Location and Replacement Parts List (Updating) 25
2
SA-AK343P

1 Notes
This service manual does not contain the following information, because of the reference to the original model of SA-AK340P/PC-
S.


·

Assembling & Disassembling


·

Service Positions


·

Self-diagnosis & special mode setting


·

Terminal function of IC’s
The following sections contains information that has been changed or modified.
2 Illustration of IC's, Transistors and Diodes (Updating)
Note: With reference to page 48 (section 15) of original service manual for SA-AK340P/PC-S. Below are the updates.
B3AAA0000803
A
Ca
Cathode
Anode
B0BA3R900006
2SB0709AHL
B1ABGC000005
3
SA-AK343P

4
SA-AK343P

3 Schematic Diagram (Updating)
3.1. (B) Main Circuit
SA-AK343P
5

Note: With reference to page 61~64 (section 18.3) of original service manual for SA-AK340P/PC-S. Below is the updates.
N
C2703
470P
R2212
3.3K
R2112
3.3K
1
2
3
4
5
6
7
8
15 16 17 18 19 20 21 22 23
35
36
37
38
39
40
41
42
484950515253545556
934
24
47
10 33
25
46
11 32
12 31
26
45
27
44
13 30
14 29
28
43
IC2803
C1BB00001121
AUDIO SOUND PROCESSOR C0A
A
C2212
1
C2112
1
C2976
16V10
C2232 1
C2132 1
C2222 1
C2122 1
D2191
D2583
B0BC9R000008
R2181 470
R2183 1K C2181 1
C2182 1
C2183 0.22
C2113 6800P
C2213 6800P
PB_L
PB_R
GND
REC_IN_L
REC_IN_R
+B
W2503
0
W2520
0
W2577
0
1
2
3
4
5
6
14
12
10
8
7
9
11
13
C2175 3300P
C2173 0.01
C2174 0.01
C2583
16V100
C2509
16V33 R2509
560
REC_H
MO+B
MO_GND
NC
DECK1_H
NC
MOTOR
NC
C2171 0.1
C2172 0.1
C2301 0.22
C2302 0.22
R2401 15K
R2311
470
R2312
10K
R2412
10K
R2355
270K
C2442
1
C2342
1
C2312
1
R2455
270K
R2314
0
R2145
1K R2146
1K
R2701
1K
W2511
0
R2703
220K
R2413
100K
R2245
1K
R2313
100K
C2401 0.22
C2311
1
C2402 0.22
C2272 0.15
C2192 0.1
R2195 10K
R2281 470
R2282 0
R2193
4.7K
R2283
100K
C2283
0.047
R2194
100K C2194
0.15
C2271 0.15
C2274 0.01
C2273 0.01
C2275
3300P C2588
0.1
C2585
220P R2585 330K
R2510
220 C2584
220P
R2512
100K
R2511
2.2K
C2511
50V2.2
R2411
470
R2414
0
R2246
1K D2241
B0ACCK000005
R2247
100K C2245
16V10
C2411
1
C241
47P
C2706
50V1
R2706
3.3K
C2412
1
R2586
1.2K
R2584
330K
W2546
0
W2526
0
R2587 1.2K
R2508
1K
R2504
100
R2501
330K
R2102
3.3K
R2202
3.3K
R2503
2.7K
R2502
82K
C2507
0.22
C2503
1
C2501
1
R2507 100K
MUTE_A ASP_DA +15V ASP_CLK SW15V
A_GND
+15V
SW5V
MOT_12V
P_GND
LM_1 -9V A_GND HP_R HP_L
R2203
2.2K
D2503
B0ADCC000002
REC[59]
MTR[58]
DECK_H
R2675
Q2978
B1GDCFJJ0047
REC:ON/OFF CONTROL SWITCH
Q2980
B1GDCFJJ0047
SUPPLY CONTROL SWITCH
(DECK MOTOR)
Q2501
B1ABCF000176
LEVEL METER 
CONTROL SWITCH
R2248
6.8K


4
5
R2702
1K
Q2341,Q2441
B1ABGC000005
HEADPHONE MUTING
R2345
1.5K
R2445
1.5K
R2357
100K
R2457
100K
C2344
0.47
C2444
0.47
R2447
1
R2446
3.3K
R2346
3.3K
R2347
1
R
2
R
2
R
2
R
2
Q2511
B1GDCFJJ0047
MUTING CONTROL
Q2980
R2173 4.7K R2172 6.8K
R2196 10K
R2273
4.7K R2271 4.7K
CN2803
MAIN CIRCUIT
SCHEMATIC DIAGRAM - 3 : +B SIGNAL
: -B SIGNAL
TO
DECK
CIRCUIT
(CN1001) ON
SCHEMATIC
DIAGRAM-7
R2211
2.2K
C2252
1
R2111
2.2K
C2254
0
R2104 27K R2103 2.2K
R2204 27K
R2674
47K
W2553
0
R2673 47K R2672 10K R2671 10K
C2191 50V4.7
C2282 1
C2281 1
B0ACCK000005
C2121
R2122
3.3K
R2222
3.3K
R2221
R2121
3.3K
TUNER RCH
3.3K
3300PC2221 3300P
C2114
0
C2152
1
C2154
0
IN-L1
IN-R1
IN-R2
IN-R3
IN-R4
IN-R5
IN-R6
GND
REF-IN
REF-OUT REC_L PRE-VIN-R HB-MIX-IN HB-MIX-OUT HB-FLT-OUT HB-ATT-IN HB-ATT-OUT HB-LPF-IN HB-LPF-OUT NC
NC
TRE-R
MID-R1
MID-R2
BASS-R2
T-OUT-R
R-OUT
VCC
CLK
DATA
NC
L-OUT
POST-VM-L
T-OUT-L
BASS-L2 BASS-L1
MID-L2 MID-L1
TRE-L
SUR2 SUR1
REC-L
SV_OUT-L
OP-OUT
OP-IN
PRE-VIN-L
POST-VM-R
BASS-R1
HARMIN HARMOUT GV-OUT-R
IN-L2
IN-L3
IN-L4
IN-L5
IN-L6
C2214
0
W2501
0
R2182 0
R2704 220K
W2514
0
W2531
0
W2513
0
W2530
0
: FM/AM SIGNAL LINE : CD SIGNAL LINE
: MAIN SIGNAL LINE
: TAPE RECORD SIGNAL LINE
: TAPE PLAYBACK SIGNAL LINE
Q2142
B1ABCF000176
AGC CONTROL SWITCH
Q2311,Q2411
B1ABGC000005
MUTING SWITCH
Q2242
B1ABCF000176
AGC CONTROL SWITCH
Q2311
Q2411
Q2341
Q2441
Q2511
C2124 0 C2224 0 C2134 0 C2234 0
C2161 0.01
C2261 0.01
C2581 16V100
W2506
0
C2101
1
C2582
16V100
C2201 1
C2193 1
R2505
0
R2301
15K
C2195 0.47
SA-AK343P MAIN CIRCUIT
1/4
C2704
470P
SA-AK343P
6

N
C2703
470P
IC2804
C0AABB000125
IC OP AMP
D2583
B0BC9R000008
C2583
16V100
9
3
R2509
560
R2401 15K
R2311
470
R2312
10K
R2412
10K
R2355
270K
C2442
1
C2342
1
C2312
1
R2455
270K
R2314
0
R2145
1K R2146
1K
R2705
3.3K
R2701
1K
W2511
0
R2703
220K
R2413
100K
R2245
1K
R2313
100K
4
01 0.22
C2311
1
02 0.22
C2272 0.15
71 0.15
74 0.01
73 0.01
5
P
C2588
0.1
C2585
220P R2585 330K
R2510
220 C2584
220P
R2512
100K
R2511
2.2K
C2511
50V2.2
R2411
470
R2414
0
R2246
1K D2241
B0ACCK000005
R2247
100K C2245
16V10
C2411
1
C2313
47P
C2413
47P
C2414
10P
C2314
10P
C2315
16V22
C2415
16V22
C2706
50V1
R2315
56K
R2706
3.3K
C2412
1
R2586
1.2K
R2584
330K
W2546
0
W2526
0
R2587 1.2K
R2508
1K
MUTE_A ASP_DA +15V ASP_CLK SW15V LM_1 -9V A_GND HP_R HP_L +15V
Q2317,Q2417
B1ABGC000005
MUTING SWITCH
R2248
6.8K







1234
8765
R2702
1K
C2705
50V1
C2702
16V100
C2701
0.01
R2316
2.2K R2335
1K
C2433
1
C2325
16V10
R2329
3.3K
W2510
0
R2331
0R2334
0
R2326
0R2328
15K
R2317
10K
R2356
180K
R2456
180K
R2417
10K
C2343
0.47
C2443
0.47
R2416
2.2K
C2331
4700P
C2321
1
R2318
100K
W2508
0
R2418
100K
R2333
15K
R2323
39K
R2423
39K W2512 0
R2435
1K
R2429
3.3K
C2431
4700P
R2421
0
C2421
1














1
2
3
4
5
6
7
8
9
10
11
12
HIGH_L-IN
+15V
MUTE-D-AMP
T-GND
F_HOP
CN2809
A_GND
LOW_R-IN
FAN
LOW_L-IN
ASP_GND
HIGH_R-IN
C2333
1
C2323
0.015
R2434
0
Q2341,Q2441
B1ABGC000005
HEADPHONE MUTING
R2345
1.5K
R2445
1.5K
R2357
100K
R2457
100K
C2344
0.47
C2444
0.47
R2447
1
R2446
3.3K
R2346
3.3K
R2347
1
R2451
0
C2425
16V10
C2943
50V2.2
R2426
0
R2428 15K
R2453
0
R2452
27
R2454
27
R2441
27
R2443
27
R2442
0
R2444
0
R2351
0
C2341
1000P
C2441
1000P
R2353
0
R2352
27
R2354
27
R2341
27
R2343
27
R2342
0
R2344
0
Q2511
B1GDCFJJ0047
MUTING CONTROL
F_HOP
R2273
4.7K R2271 4.7K
T
O
P
O
CI
R
(C
N
S
C
DI
A
R2431
0
R2433
15K
R2704 220K
W2514
0
W2531
0
W2513
0
W2530
0
C2423
0.015
Q2142
B1ABCF000176
AGC CONTROL SWITCH
Q2311,Q2411
B1ABGC000005
MUTING SWITCH
Q2242
B1ABCF000176
AGC CONTROL SWITCH
Q2311
Q2411
Q2317
Q2417
Q2341
Q2441
Q2511
3
01
5
K
R2321
0
R2415
56K
SA-AK343P MAIN CIRCUIT
2/4
C2704
470P
R2149
3.3K
R2249
3.3K
SA-AK343P
7

W2526
0
0.01
C2673
100P
C2671
100P
MUTE_A ASP_DA +15V ASP_CLK SW15V LM_1 -9V A_GND HP_R HP_L
PLLCE_UP
STIDO
PLL_CLK
PLL_DA
R2675
4.7K
SD
DET_OUT
T_GND
CD8V
R2677
120
R2902 33
Q2901
Q2902
R2901 10K
C2903 0.01
C2904 16V100
1
+15V
GND
IN OUT
1
2
3








43
44
45
46
47
48
49
50
42
41
40
39
38
37
36
35
34
33
32
31
302928
27
26
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
81
82
83
84
25
24
232221
2019
18
17
16
15
1413
12
11
10
9
8
7
6
5
4
3
2
1
76
7778
79
80 64 63
65
66
67
68
697071
72
73
7475 51
52
53
54
55
56
57
58
59
60
61
62
NC
STANDBY
FAN
MOT_12V
R2945
10K
D2946
B0ADCJ000020
C2945
16V47 C2944 100P R29
4.7
C2947
6.3V100
R2947
27
R2946
56K
W2572
0
W2571
0
R29
4
10
K
R29
4
47
K
R29
4
100
NC
NC
DCDET
PCONT/EFP/CS
NC
NC
EE_DAT
EE_CLK
MUTE_A
MUTE_DA
MUTE_A
IDCDET
PCONT
MUTE_D_AMP
REG1
REG2
REG3
REG4
REG5
REG6
REG7
REG8
EE_CS/EFP/EPH
LM_1
LM_1 DVREF+
UP-GND
PA_LVL PLLCE
PLLCE_UP
RDS_DA RDS_CLK MODE_A
F_HOP CNVSS
IRESET
BLKCK STIDO SD ASP_DA ASP_CLK PLL_DA PLL_CLK
F_HOP BYTE CNVSS XC_IN XC_OUT /RESET X_OUT VSS XIN VCC
VCC
/NMI RMT
RMT
BLKCK SYNC
SYNC
ST/DO SD NC SW_LV-1 SW_LV-2 ASP_DA ASP_CLK 10DB_ATT PLL_DAT PLL_CLK
/RESTSW
MCLK
MDATA
MLD
STATUS
CD_RST
H.BASS_LED
FL_CLK
FL_DOUT
FL_CS
FL_RESET
V_JOG_B V_JOG_A VOL_LED
SW_LED
FL_CS
FL_RESET
V_JOG_B V_JOG_A VOL_LED
SW_LED
VSS GND
NC
VCC VCC
NC
DECK1_H
REC
MTR
PLG2 PLG1
DECK1_H
REC(59)
MTR(58)
PLG2 PLG1
NC NC
MODE_1
HALF_1
MODE_1
HALF_1
STAND_BY
HOME_SW /RESTSW
MCLK
MDATA
MLD
STATUS
CD_RST
H.BASS_LED
FL_CLK
FL_DOUT
HOME_SW
SPEED
CLOSE_SW
OPEN_SW
CLOSE_SW
OPEN_SW
CHG_PLR[88]
CHG_CW
CHG_CW
CHG_CCW CHG_CCW
ST_SW
PLAY_SW
ST_SW
PLAY_SW
CHG_PLR
BOTTOM_SW
UP_SENSOR
DECK2
KEY3
KEY2
KEY1
PHOTO_2
BOTTOM_SW
UP_SENSOR
DECK2
KEY3
KEY2
KEY1
PHOTO_2
PHOTO_1
PHOTO_1 AVSS
VREF
AVCC
VREF+
VCC
UP_GND
SYS6V
UP_GND
VREF+
PCONT
D2950 B0ACCK000005
DEMO
IC2801
C2CBYY000053
MICROPROCESSOR
R2864
100
R2801
10K
W2558
0
W2540
0
R2852 100
R2853 100
R2848 100 R2847 100
R2849 1K R2843 1K
W2557 0
R2846 4.7K
R2845 10K R2844 10K R2842 10K W2523 0 R2841 10K
R2820 100K R2819 100K R2818 100K R2817 100K R2830 100K R2831 100K R2832 100K R2833 100K
W2547 0
W2537
0
W2536
0
W2576
0
W2548 0
W2549
0
R2810 22K
R2858 100
R2859 100
R2860 100
R2862 100
R2951
470K
R2966
4.7K
W2550
0
Q2951
Q2952
Q2950
Q2958,Q2960
B1ACKD000006
PLUNGER ON/OFF SWITCH
Q2957,Q2959
B1GBCFLL0037
PLUNGER ON/OFF SWITCH
Q2957
Q2958
Q2960 Q2959
R2802 100
W2545 0
W2543 0
C2821
100P
W2544

0
R2882
10M
W2552
0
R2883
330K C2883 18P R2886
1M R2881
220 C2803
1
C2853
0.1
R2851
47K
D2803
B0ACCK000005
C
5
Q2803
B1GBCFJJ0051

RESET (MICRO-P) SWITCH
B
FA
N
C2882
18P
X2801
H0A327200115
X2802
H2B100500004
R2803 10K
R2861 100
R2955 270K
R2866 47K R2865 47K R2854 47K R2857 47K R2856 47K R2855 47K
R2863
47K
R2950
470K
R2965
4.7K
R2952
1K
SW5V
SPEED
VREF+
R2873
22K
R2871 22K
R2874 4.7K
C2871 330P C2874 330P
W2532 0
C2872 0.022
1
2
3
4
8
7
6
5
NC
VCC
EE_CS
EE_CLK
NC
IC2871 GND
EE.DAT
IC2871
E-EPROM IC
(NOT SUPPLIED)
R2936
1K
B0EAKM000117
D2936
W2559
0
W2560
0
W2555
0
W2556
0
W2539 0
R2937
10K
CN2806
Q2937
Q2936

























+15V
HP_L
HP_GND
HP_R
DGND
SW5V
PA_IN_L
PA_IN_GND
PA_IN_R
MOT10V
SW_LED
VOL_LED
J_VOLA
J_VOl_B
FL_RST
FL_CS
FL_DOUT
FL_CLK
H_BASS_LED
KEY3
KEY2
KEY1
P-GND
RMT
VREF+
SYNC
PCONT
SYS6V
+15V
MOT_12V
CHG_PLR(88)
HP_L
HP_GND
HP_R
UP_GND
SW5V
PA_IN_L
PA_IN_GND
PA_IN_R
MOT_12V
SW_LED
VOL_LED
J_VOLA
J_VOl_B
FL_RESET
FL_CS
FL_DOUT
FL_CLK
H_BASS_LED
KEY3
KEY2
KEY1
P-GND
RMT
VREF+
SYNC
PCONT
SYS6V
123456789
1011121416171819202122232425262729 2830 1315
CN2805












CCW
CW
P_GND
VC_8V
HOME_SW
ST-SW
OPEN_SW
CAM_SENSOR
SW5V
D_GND
PLAY_SW
PLUNGER
UD_SENSOR
BOTTOM_SW
SPEED
CHG_CCW
CHG_CW
P_GND
CD8V
HOME_SW
ST-SW
OPEN_SW
CLOSE_SW
SW5V
D_GND
PLAY_SW
UD_SENSOR
BOTTOM_SW
SPEED
1243 678911 12 13 14 1510
5
C2678 0.01
R2920
4.7K
W2565
0
W2566
0
R2919
4.7K
R2921
4.7K
R2922
10K
CD7.5V
PGND
MCLK
15
14
13
12
11
10
2
4
6
8
9
7
5
3
1
17
16
10
4
6
8
9
7
5
3
2
1
L
A_GND
R
CD_3.3V
CD_GND
LD_S
NC
+7.5V
PGND
MCLK
MDATA
MLD
BLKCK
STAT
/RST
/REST_S
CN2801
MDATA
MLD
SW5V
BLKCK
SW5V
A_GND
R2908
330 W2542 0
R2907
1K
D2901
B0ADCC000002
R2909 2.2K
R2910 330
W2563 0
C2906 
1000P
STATUS
UP_GND
CD_RST
RESTSW
MOT_12V
PLG2
C2957
100P
R2957
1K
R2959
1K
R2953
10K
W2525
0
W2517 0
W2534
0
R2954
10K
R2958
22K
R2960
22K
C2959
100P
R2924
10K
R2925
4.7K
R2928
10K
Q2906
B1ABCF000176
INTERFACE SWITCH
Q2907
B1ABCF000176
CD STATUS INTERFACE
Q2950
B1ACKD000006
DECK SUPPLY
CONTROL SWITCH
Q2951
B1ACKD000006
SUPPLY CONTROL SWITCH
Q2936
B1ACKD000006
CD SUPPLY
CONTROL SWITCH
Q2937
B1GBCFJJ0051
CHANGER PLUNGER
ON/OFF SWITCH
Q2952
B1GBCFLL0037
DECK SUPPLY (PCONT)
CONTROL SWITCH
PLG1
DECK2
PHOTO_1
PHOTO_2
HALF_1
MODE_1
UP_GND
PA_IN_L
PA_IN_R
DVREF+
P_GND
SW5V
R2151 0
R2251 0
R2956 270K
PL2
PL1
DVREF
DECK-2
PL_GND
VREF_GND
PHOTO_PB
MODE_PB
CN2951
HALF_PB
PHOTO_RP
TO
CD SERVO
CIRCUIT
(CN7002) ON
SCHEMATIC
DIAGRAM-1
TO
DECK
MECHANISM
CIRCUIT
(CN971) ON
SCHEMATIC
DIAGRAM-7
TO
PANEL CIRCUIT (CN6601) ON
SCHEMATIC DIAGRAM-4
C2674
R2676 10K
R2912 4.7K
W2569
0
W2561
0
W2570
0
R2914 4.7K
R2916 4.7K
R2918 10K
R2929 10K
R2930 10K
R2931 10K
R2923 0
R2927 4.7K
R2674
47K
R2673 47K R2672 10K R2671 10K
R2132
3.3K
R2232
3.3K
C2131
0R2131 3.3K
R2231
3.3K
R2221
R2121
3.3K
TUNER LCH
TUNER RCH
PLL CLK
2B
2A
TUNER SD
TUNER GND
TUNER DQ/ST
TUNER DQ/ST
+15V
VCC +7.5V
DET OUT
PLL_DA
PLLCE
3.3K
TO
MAIN
CIRCUIT
(1A) ON
SCHEMATIC
DIAGRAM-2
TO
MAIN
CIRCUIT
(1B) ON
SCHEMATIC
DIAGRAM-2
C2901
0.1
W2554 0
Q2901
B1ACKD000006
CONTROL SWITCH Q2902
B1AACF000064
VOLTAGE STABLISER CD3.3V
Q2906
Q2907
W2568 0W2567 0
C2231 0
SA-AK343P MAIN CIRCUIT
3/4
D2677
B0BC7R500001
C2854 10V220
C2940
0.1
TO CRS1 (CN1)
R2868
100K
SA-AK343P
8

W2526
0
MUTE_A ASP_DA +15V ASP_CLK SW15V LM_1 -9V A_GND HP_R HP_L +15V
1













12
11
10
9
8
7
6
5
4
3
2
1
STANDBY
MOT_12V
+15V
-VCC
SW5V
CN2808
CN2810
UP_GND
FL_GND
C2753 0.1
P_GND
CD8V
DCDET
STANDBY
MOT_12V
+15V
-9V
SW5V
P_GND
P_GND
CD8V
PCONT PCONT
IDCDET


1
2
FAN
+15V
MUTE-D-AMP
T_GND
F_HOP
GND
IN OUT
1
2
3
1
2
3








43
44
45
46
47
48
49
50
42
41
40
39
38
37
36
35
34
33
32
31
302928
27
26
25
24
232221
2019
18
17
64 63 51
52
53
54
55
56
57
58
59
60
61
62
NC
STANDBY
FAN
MOT_12V
R2945
10K
D2946
B0ADCJ000020
C2945
16V47 C2944 100P R2944
4.7K
Q2943
R2942
5.6K R2941 10K C2941 16V33
C2947
6.3V100
R2947
27 W2573 0
R2946
56K
W2572
0
W2571
0
R2943
10K
Q2948
Q2949
R2949
47K
C2948
10V220
R2939
47K
R2948
100
NC
NC
DCDET
PCONT/EFP/CS
NC
NC
EE_DAT
EE_CLK
MUTE_A
MUTE_DA
MUTE_A
IDCDET
PCONT
MUTE_D_AMP
REG1
REG2
REG3
REG4
REG5
REG6
REG7
REG8
EE_CS/EFP/EPH
BLKCK STIDO SD ASP_DA ASP_CLK PLL_DA PLL_CLK
VREF+ SYS6V
P_GND
VREF+
CD7.5V
SW5V
R2894
47K W2535 0
W2518
0
+15V
IDCDET
D2813
B0ACCK000005
D2811
B0ADCJ000020
IDCDET
/NMI RMT
RMT
BLKCK SYNC
SYNC
ST/DO SD NC SW_LV-1 SW_LV-2 ASP_DA ASP_CLK 10DB_ATT PLL_DAT PLL_CLK
VSS
GND
NC
VCC VCC
NC
DECK1_H
REC
MTR
PLG2 PLG1
DECK1_H
REC(59)
MTR(58)
PLG2 PLG1
NC NC
MODE_1
HALF_1
MODE_1
HALF_1
STAND_BY
0
1
0
00053
C
ESSOR
W2557 0
R2846 4.7K
R2845 10K R2844 10K R2842 10K W2523 0 R2841 10K
R2820 100K R2819 100K R2818 100K R2817 100K R2830 100K R2831 100K R2832 100K R2833 100K
W2547 0
W2537
0
W2536
0
W2576
0
W2548 0
W2549
0
R2810 22K
R2802 100
C
2821
1
00P R2882
10M
W2552
0
R2883
330K C2883 18P R2886
1M R2881
220 C2803
1
C2853
0.1
R2851
47K
C2940
0.1
R2940
820K
D2803
B0ACCK000005 D2801
B0ACCK000005
C2802
50V3.3
Q2803
B1GBCFJJ0051
RESET (MICRO-P) SWITCH
Q2942
B1ACKD000006
FAN MOTOR ON/OFF SWITCH
Q2943
B1ABCF000176
FAN SUPPLY
CONTROL SWITCH
Q2948,Q2949
B1ABCF000176
DC DETECT SWITCH
C2882
18P
X2801
H0A327200115
X2802
H2B100500004
R2803 10K
VREF+
R2873
22K
R2871 22K
R2874 4.7K
C2871 330P C2874 330P
W2532 0
C2872 0.022
1
2
3
4
8
7
6
5
NC
VCC
EE_CS
EE_CLK
NC
IC2871 GND
EE.DAT
IC2871
E-EPROM IC
(NOT SUPPLIED)
R
2936
1K W2556
0
W2539 0
R2937
10K
CN2806
3
6

























+15V
HP_L
HP_GND
HP_R
DGND
SW5V
PA_IN_L
PA_IN_GND
PA_IN_R
MOT10V
SW_LED
VOL_LED
J_VOLA
J_VOl_B
FL_RST
FL_CS
FL_DOUT
FL_CLK
H_BASS_LED
KEY3
KEY2
KEY1
P-GND
RMT
VREF+
SYNC
PCONT
SYS6V
+15V
MOT_12V
CHG_PLR(88)
HP_L
HP_GND
HP_R
UP_GND
SW5V
PA_IN_L
PA_IN_GND
PA_IN_R
MOT_12V
SW_LED
VOL_LED
J_VOLA
J_VOl_B
FL_RESET
FL_CS
FL_DOUT
FL_CLK
H_BASS_LED
KEY3
KEY2
KEY1
P-GND
RMT
VREF+
SYNC
PCONT
SYS6V
123456789
1011121416171819202122232425262729 2830 1315
T
O
P
O
CI
R
(C
N
S
C
DI
A
T
O
TO
PANEL CIRCUIT (CN6601) ON
SCHEMATIC DIAGRAM-4
SA-AK343P MAIN CIRCUIT
4/4
C2854 10V220
C2940
0.1
W2575 0
SA-AK343P
9

3.2. (C) Panel Circuit
Note: With reference to page 65 (section 18.4) of original service manual for SA-AK340P/PC-S. Below is the updates.
W6502
01
2
3
4
5
6
7
8
9
12 13 14 15 16 17 18 19 20
25
26
27
28
29
30
31
32
33
363738394041424344
10 24
21
35
11 23
22
34
NC
NC
NC
NC
OSC
NC
DIN
CLK
STB
K1
K2
G10
G11
G12/S17
VEE
S16
S15
S14
S13
S12
S11
S10
VSS VDD S1 S2 S3 S4 S5 S6 S7 S8 S9
VSS
VDD
G1 G2 G3 G4 G5 G6 G7 G8 G9
C6636 100P
C6604 100P C6603 100P C6601 100P
R6605 82K
R6604 220
W6504
0W6503 0
W6505 0
R6603 220
R6601 470
IC6601
C0HBB0000057
FL DRIVER
C6623 50V22
FL6602
A2BD00000138
FL_DOUT
FL_CLK
FL_CS
GR1 GR2 GR3 GR4 GR5 GR6 GR7 GR8 GR9
GR1 GR2 GR3 GR4 GR5 GR6 GR7 GR8 GR9
GR10 GR11 GR12 GR12
GR10
GR11
GR12
SG16
SG15
SG14
SG13
SG12
SG11
SG10
SG16 SG15 SG14 SG13 SG12 SG11 SG10 SG9 SG8 SG7 SG6 SG5 SG4 SG3 SG2 SG1 R6631
SYS6V KEY3
47 47
R6632
D6635
B0BC5R600003
D6458
B3AAA0000803
S6301
CD
R6458
4.7K
R6399
10K
R6199
10K
H6555/W6555
C6635
50V2.2 GND2
FL2
-VP
FL1
SYS6V SYS6V
PCONT
SYNC
DGND
C6632
50V22
C6631
50V22
SG1 SG2 SG3 SG4 SG5 SG6 SG7 SG8 SG9
SYS6V
PCONT
SYNC
VREF+
RMT
P_GND
KEY1
KEY2
KEY3
FL_CLK
FL_DOUT
FL_CS
VJOG_B
VJOG_A
VOL_LED
SW_LED
MOT10V
PA_IN_R
PA_IN_GND W6501 0
PA_IN_L
SW5V
GND2
HP_R
HP_GND
HP_L
SYS6V
PCONT
SYNC
VREF+
RMT
P_GND
KEY1
KEY2
KEY3
H.BASS_LED
FL_CLK
FL_DOUT
FL_CS
FL_RST
VJOG_B
VJOG_A
VOL_LED
SW_LED
MOT10V
PA_IN_R
PA_IN_GND
PA_IN_L
SW_5V
D_GND
HP_R
HP_GND
HP_L
+15V
GND2
VREF+ HP_SW GND2 KEY3 KEY1
R6102
1K
GND2
SYNC
PCONT
SYS6V
12345678 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44
1234568
79
S6101
POWER
S6102
SINGLE
DISC CHANGE
R6103
2.2K
S6103
OPEN
/CLOSE
R6104
1.8K
S6104
CD1 CD2 CD3 CD4 CD5
R6105
2.2K
S6105
R6106
2.7K
S6106
R6107
4.7K
S6107
R6108
6.8K
R6109
10K
R6110
22K
S6108
S6302
TAPE
S6303
STOP
S6304
REC
S6305
TUNER/
BAND
S6306
MUSIC P.
S6308
MULTI
DISC
CHANGE
R6302
1K
R6303
2.2K
R6304
1.8K
R6305
2.2K
R6306
2.7K
R6307
4.7K
R6308
6.8K
S6201 KEY2
VREF+
DECK2
OPEN
S6202
DISPLAY/
DEMO
S6203
DECK1/2
S6204
H.BASS
S6205
FF
S6206
REW
S6207
DECK1
OPEN
R6202
1K R6493
10K
VJOG_B
VJOG_A
PA_SW
GND2
GND2
GND2
RMT
VREF+
C6481
50V22
R6481
0
HP_GND
HP_R
HP_L
HP_SW
GND2
JK6551
PHONES
C6553
0.01
SW5V
MOT_10V
R6457
390
K6104
0
D6462
D6457,D6462
B3ACA0000302 D6457
QR6457
B1GBCFLL0037
LED DRIVE
C6551
0.01 C6552 0.01
R6492
47K
VR6491
EVEKE2F3524B
VOLUME JOG
PANEL CIRCUIT
SA-AK343P PANEL CIRCUIT
SCHEMATIC DIAGRAM - 4
R6491
47K
R6203
2.2K
R6204
1.8K
R6205
2.2K
R6206
2.7K
C6492
100P
C6491
100P
R6207
4.7K
R6208
39K
COM B
A
13
2
2
4
6
7
5
3
1
PA_GND
PA_IN_R
PA_IN_L
PA_SW
GND2
JK6751
CN6601
MUSIC PORT INPUT
C6753
0.01
R6751
3.3K
R6753
3.3K
C6752
0.01
R6754
1.5K
R6752
1.5K
C6751
0.01
2
4
6
7
5
3
1


3
2
1
Z6481
B3RAB0000025
REMOTE SENSOR
15
14
13
12
11
10
2
4
6
8
9
7
5
3
1
30
29
28
27
26
25
17
19
21
23
24
22
20
18
16
: +B SIGNAL LINE : -B SIGNAL LINE : MAIN SIGNAL LINE
TO
MAIN
CIRCUIT
(CN2806) ON
SCHEMATIC
DIAGRAM-3
TO
TRANSFORMER CIRCUIT (CN5951)
ON SCHEMATIC DIAGRAM-5
VOL_LED
+15V
SA-AK343P
10