Pioneer KEH-1906ZZ/X1H/UC User manual

PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS SERVICE INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER ELECTRONIC CORPORATION 1999 K-ZZB. FEB. 1999 Printed in Japan
ORDER NO.
CRT2327
CASSETTE CAR STEREO WITH FM/AM ELECTRONIC TUNER
KEH-1906ZZ2 X1R/UC
Service
Manual
C.E.SUPPLY
- This additional service manual is designed to be used together with Model KEH-1906ZZ/X1H/UC
Service Manual CRT1721. Refer to it for finding parts numbers and adjustment,etc. which are not
shown in this manual.
VEHICLE DESTINATION PRODUCED AFTER PART No. ID No. PIONEER MODEL No.
U.S.A, CANADA 1999 KEH-1906ZZ2/X1R/UC
ELECTRICAL PARTS LIST(Page 11)
Tuner Amp Unit
Part No.
Symbol and Description KEH-1906ZZ/X1H/UC KEH-1906ZZ2/X1R/UC
Q271 Transistor 2SB1242 2SB1241
L502 Inductor Not used LCTBR47K2125
R501 RS1/10S101J RS1/10S271J
R545 RS1/8S0R0J Not used
WB Unit
Part No.
Symbol and Description KEH-1906ZZ/X1H/UC KEH-1906ZZ2/X1R/UC
C802,803 CCSQCH120J50 CCSQCH150J50
C813 CCSQCH180J50 CCSQCH200J50

2
KEH-1906ZZ2
A
1234
B
C
D
1234
3. SCHEMATIC DIAGRAM
3.1 OVERALL CONNECTION DIAGRAM (GUIDE PAGE)
Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL
PARTS LIST”.
A-a A-b
A-a A-b
A-b
A-a
Large size
SCH diagram
Guide page
Detailed page
P.C.BOARD (A)
TUNER AMP UNIT
WB UNIT
1234567
RF AMP
1ST IF
10.7MHz
DET.
2ND IF 450kHz
AM IF
VCO AMP
LOOP FILTER
MECHANISM MUTE
MECHA
+B SW
EQ AMP
TAPE +B
REGULATOR
TEST TAPE:
315Hz 0dB
-73dBs
TAPE:-22.0dBs
WB:-11.0dBs
FM:-16dBs
AM:-22dBs
1234567
123456789
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
2 4 6 8
10 12 14
18 20
1 3 5 7
9 11 13
17
19
15
16
12 34 5678
987654321
1
3
2
1
2
A-a
A

3
KEH-1906ZZ2
TU +B
SWITCH
WB +B
SWITCH
FM +B
SWITCH
AM +B
SWITCH
AUDIO +B
REGULATOR SYSTEM
POWER
SYSTEM CONTORLLER
ELECTRONIC
VOLUME
POWER AMP
MUTE
MUTE
VDD REGULATORSYSTEM +B
SENSE
ACC SENSE
BACK UP SENSE
ILLUMINATION POWER
SWITCH
MECHANISM MUTE
MECHANISM
+B SWITCH
TAPE:-28.4dBs
FM:-20.4dBs
AM:-26.4dBs
WB:-19.4dBs
TAPE:-4dBs
1 2 3 4
5 6 7
8 9
10 11
12 13 14 15 16 17 18 19 20 21 22 23 24
48 47 46 45
44 43 42
41
40
39
38 37 36 35 34 33 32 31 30 29 28 27 26
25
12
11
13
15
14
22
5
2
3
9
8
7
17
18
19
21
24
23
20 6
25
4
16
10
1
4
10
5
6
11
7
8
9
2
3
1
12
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
24 23
22 21
20 19
18 17
16 15
14 13
12 11
10 9
8 7
6 5
4 3
2 1
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
5678
A
B
C
D
5678
A-b
A

4
KEH-1906ZZ2
TUNER AMP UNIT
AM IF
VCO AMP
LOOP FILTER
TU +B SWITCH
WB +B SWITCH
WB: 11 0dBs
FM:-16dBs
AM:-22dBs
123456789
10 11 12 13 14 15 16 17 1819 20 21 22 23 24 25 26
1
3
2
1
2
A
1234
B
C
D
1234
A-a
A-a A-b

5
KEH-1906ZZ2
P.C.BOARD (A)
WB UNIT
1234567
RF AMP
1ST IF 10.7MHz
DET.
2ND IF 450kHz
S
MECHANISM
MUTE
MECHANISM +B SWITCH
EQ AMP
TAPE +B REGULATOR
TEST TAPE: 315Hz 0dB -73dBs
TAPE:-22.0dBs
WB:-11.0dBs
1234567
2
4
6
8
10
12
14
18
20
1
3
5
7
9
11
13
17
19
15
16
12 34 5678
987654321
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
24
23
22
21
20
19
18
17
41
42
43
44
45
46
47
48
5678
A
B
C
D
5678
A-a
A-a A-b

6
KEH-1906ZZ2
A
1234
B
C
D
1234
WB +B
WITCH
FM +B SWITCH
AM +B SWITCH
AUDIO +B REGULATOR SYSTEM
POWER
ELECTRONIC VOLUME
POWER AMP
MUTE
MUTE
TAPE:-28.4dBs FM:-20.4dBs AM:-26.4dBs WB:-19.4dBs
TAPE:-4dBs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
12
11
13
15
14
22
5
2 3
9
8
7
17
18
19
21
24
23
20
6
25
4
16
10
1
4
10
5
6
11
7
8
9
A-a A-b
A-b

7
KEH-1906ZZ2
5678
A
B
C
D
5678
SYSTEM CONTORLLER
VDD REGULATORSYSTEM +B
SENSE
ACC SENSE
BACK UP SENSE
ILLUMINATION POWER SWITCH
2
3
1
12
80 79
78 77
76 75
74 73
72 71
70 69
68 67
66 65
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
A-b
A-a A-b

8
KEH-1906ZZ2
A
1234
B
C
D
1234
TUNER AMP UNIT
- Connection Diagram
NOTE FOR PCB DIAGRAMS
1. The parts mounted on this PCB
include all necessary parts for
several destination.
For further information for
respective destinations, be sure
to check with the schematic dia-
gram.
2. Viewpoint of PCB diagrams
Capacitor
Connector
P.C.Board Chip Part
SIDE A
SIDE B

9
KEH-1906ZZ2
1
2
3
4
5
6
7
1
2
CN502
CN801
ANTENNA JACK
3
2
1
CN902
6
5
48
7
3
2
1
5678
A
B
C
D
5678
FM/AM TUNER UNIT SIDE A
P.C.BOARD(A) WB UNIT CN9
KEYBOARD UNIT CN901

10
KEH-1906ZZ2
A
1234
B
C
D
1234