Pioneer XCL-7 Service manual
Service
Manual
STEREO CD RECEIVER
XC-L7
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Type
KUXJ/CA ‡ AC120V
Model
XC-L7
Power Requirement
Remarks
ORDER NO.
RRV1946
CONTENTS
1. SAFETY INFORMATION ...................................... 2
2. EXPLODED VIEWS AND PARTS LIST................ 3
3. SCHEMATIC DIAGRAM ..................................... 10
4. PCB CONNECTION DIAGRAM.......................... 26
5. PCB PARTS LIST ............................................... 38
6. ADJUSTMENT .................................................... 43
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. 501 Orchard Road, #10-00 Lane Crawford Place, Singapore 0923
CC
C PIONEER ELECTRONIC CORPORATION 1998
CC
7. GENERAL INFORMATION ................................ 50
7.1 PARTS.......................................................... 50
7.1.1 IC ........................................................... 50
7.1.2 DISPLAY................................................ 54
7.2 DIAGNOSIS.................................................. 55
7.2.1 DISASSEMBLY ..................................... 55
7.2.2 PCB LOCATIONS ................................. 58
7.3 BLOCK DIAGRAM........................................ 59
8. PANEL FACILITIES AND SPECIFICATIONS.... 60
T - ZZK APR. 1998 Printed in Japan
XC-L7
1. SAFETY INFORMATION
This service manual is intended for qualified service technicians ; it is not meant for the casual do-ityourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained
to properly and safely repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may
void the warranty. If you are not qualified to perform the repair of this product properly and safely, you
should not risk trying to do so and refer the repair to a qualified service technician.
WARNING
Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxicant which may
cause birth defects or other reproductive harm (California Health & Safety Code, Section 25249.5).
When servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin contact with
the solder. Also, when soldering do not inhale any smoke or fumes produced.
NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse symbols (fast operating fuse) and/or (slow operating fuse) on PCB indicate that replacement parts must
be of identical designation.
REMARQUE
(POUR MODÈLE CANADIEN SEULEMENT)
Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur CCI indiquent que les pièces
de remplacement doivent avoir la même désignation.
(FOR USA MODEL ONLY)
1. SAFETY PRECAUTIONS
The following check should be performed for the
continued protection of the customer and service
technician.
LEAKAGE CURRENT CHECK
Measure leakage current to a known earth ground (water
pipe, conduit, etc.) by connecting a leakage current tester
such as Simpson Model 229-2 or equivalent between the
earth ground and all exposed metal parts of the appliance
(input/output terminals, screwheads, metal overlays, control
shaft, etc.). Plug the AC line cord of the appliance directly
into a 120V AC 60Hz outlet and turn the AC power switch
on. Any current measured must not exceed 0.5mA.
Reading should
not be above
0.5mA
Earth
ground
Device
under
test
Also test with
plug reversed
(Using AC adapter
plug as required)
Leakage
current
tester
Test all
exposed metal
surfaces
ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL
SHOCK HAZARD AND MUST BE CORRECTED BEFORE
RETURNING THE APPLIANCE TO THE CUSTOMER.
2. PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in the appliance
have special safety related characteristics. These are
often not evident from visual inspection nor the protection
afforded by them necessarily can be obtained by using
replacement components rated for voltage, wattage, etc.
Replacement parts which have these special safety
characteristics are identified in this Service Manual.
Electrical components having such features are identified
by marking with a
in this Service Manual.
The use of a substitute replacement component which does
not have the same safety characteristics as the PIONEER
recommended replacement one, shown in the parts list in
this Service Manual, may create shock, fire, or other hazards.
Product Safety is continuously under review and new
instructions are issued from time to time. For the latest
information, always consult the current PIONEER Service
Manual. A subscription to, or additional copies of, PIONEER
Service Manual may be obtained at a nominal charge from
PIONEER.
on the schematics and on the parts list
AC Leakage Test
2
2. EXPLODED VIEWS AND PARTS LIST
NOTES: ¶ Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.
¶ The
Therefore, when replacing, be sure to use parts of identical designation.
¶ Screws adjacent to mark on the product are used for disassembly.
2.1 PACKING
mark found on some component parts indicates the importance of the safety factor of the part.
XC-L7
24
22
18(1/4)
15
18(2/4)
5
10
18(4/4)
18(3/4)
11
!
Lithium Battery
12
1
6
13
15
21
23
16
17
9
19(1/2)
19(2/2)
7
3
2
• PACKING PARTS LIST
Mark No. Description Part No.
1 Remote Control Unit Holder AAH7008
2 Display Unit Cord ADE7014
(10P Mini-DIN Cable)
3 Power Cord ADG1152
4 FM Antenna ADH7004
NSP 5 Vinyl Bag AHG7031
6 Operating Instructions ARE7169
(English/French)
NSP 7 Caution SG ARR7013
8 • • • • •
NSP 9 Warranty Card ARY1051
10 AM Loop Antenna ATB7007
11 Remote Control Unit AXD7145
(CU-XC004)
12 Battery Case AZE7116
4
20
Mark No. Description Part No.
NSP 13 Lithium Battery (CR2025) VEM1009
14 • • • • •
15 Polyethylene Bag Z21-038
NSP 16 Protect Sheet AEH7004
NSP 17 Silica Gel AEN7001
18 Pad FCD (PS) AHA7175
19 Pad RCD (PS) AHA7182
20 Packing Case AHD7622
NSP 21 Vinyl Bag AHG7036
NSP 22 Polyethylene Bag CEG1116
23 Mirror Mat Sheet Z23-007
NSP 24 DISPLAY UNIT DU-L7 • • • • •
3
XC-L7
2.2 MAIN SECTION (XC-L7)
33
36
36
43
43
43
37(2/2)
29
35
33
11
G
2
43
3
28
43
37(1/2)
4
44
32
XC-L7
G
51
19
Refer to
"2.4 SINGLE MECHANISM ASSY"
16
31
48
31
E
44
C
15
13
42
44
30
5
D
42
38
20
7
41
23
A
B
42
26
48
1
A
B
38
21
E
C
10
39
F
38
27
48
4
48
49
D
38
6
18
50
24
47
34
17
24
49
43
43
45
43
43
40
46
43
43
48
43
8
22
14
25
F
9
5
XC-L7
• MAIN SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 CD MAIN Unit AWU7147
2 CD KEYB1 Unit AWZ8985
3 CD KEYB2 Unit AWZ8986
4 POWER AMP Unit AWZ8990
5 POWER AF Unit AWZ8991
31 Rivet VEC1178
32 Tray Panel CD AAN7170
33 Black Line AAP7033
34 Bottom Base CD AMA7003
35 Top Panel AMB7523
6 POWER HP Unit AWU7006
7 POWER TRANS Unit AWU7148
8 POWER SPTB Unit AWU7149
9 FM/AM Tuner Module AXQ7065
10 Lead Card(33P) ADD7065
11 Lead Card(5P) ADD7066
12 • • • • •
13 Power Transformer(T1) ATS7216
14 DC Fan Motor AXM7003
15 Fuse(FU1, 2A) REK1078
NSP 16 Single Mechanism Assy RXA1672
17 Leg AEB7090
18 Front Leg AEB7102
19 Top Barrier AEC7122
20 Side Barrier AEC7104
21 M Barrier AEC7121
22 Rear Panel ANC7694
NSP 23 Bottom Plate CD ANF7007
24 Angle ANG7151
25 Fan Plate ANG7153
26 Earth Plate ANG7168
NSP 27 Heat Sink ANH7066
NSP 28 Top Plate ANK7034
29 Tray Sheet AWL7027
30 Cord Clamper RNH-184
36 Bonnet ANE7168
37 Button Assy AWL7024
38 Screw BBZ30P080FMC
39 Screw IBZ30P150FCC
40 Screw BBZ30P300FZK
41 Screw BBZ40P060FMC
42 Screw BPZ30P060FZK
43 Screw BPZ30P080FZK
44 Screw BPZ30P180FZK
45 Screw PMZ30P060FZK
46 Screw VBZ30P080FZK
NSP 47 Spacer A AEB7085
48 Screw BBZ30P080FCC
49 Screw BPZ30P060FCU
NSP 50 Name Label ARW7039
51 65 Label ORW1069
6
2.3 DISPLAY UNIT DU-L7
XC-L7
10
6
8
5
9
7
4
4
3
11
12
11
2
1
• DISPLAY SECTION PARTS LIST
Mark No. Description Part No.
1 CD FLDP Unit AWU7003
2 CD CNB Unit AWZ8988
3 CD DPKEY Unit AWZ8989
4 Leg AEB7090
5 Display Button AAD7409
6 Top Button AAD7430
7 Window AAK7461
8 FL Filter AEC7117
9 Display Panel AMB7458
10 Rear Cover AMC7013
Mark No. Description Part No.
11 Screw BPZ30P100FZK
12 Screw PMZ30P060FZK
7
XC-L7
2.4 SINGLE MECHANISM ASSY
20
22
27
21
23
26
24
25
35
34
28
19
36
17
18
42
29
30
31
32
33
8
• SINGLE MECHANISM ASSY PARTS LIST
1
• How to install the disc table
Use nipper or other tool to cut the three sections
marked figure . Then remove the spacer.
While supporting the spindle motor shaft with
the stopper, put spacer on top of the motor base
(angled so it doesn't touch section ), and stick
the disc table on top (takes about 9 kg pressure).
Take off the spacer.
1
2
1 2
A
A
A
B
6.9mm
3.1mm
± 0.05mm
PWB Holder
Spacer
Spacer
Spacer Setting
Position
Spindle Motor
Carriage
Base
Disc
Table
(Pressure of
about 9kg)
PCB
B
XC-L7
Mark No. Description Part No.
1 Lever Switch(S601) DSK1003
2 Screw PBA1048
3 Rubber Belt PEB1193
4 Motor Pulley PNW1634
5 Tray Black V PNW2455
6 Float Base PNW2032
7 Drive Gear 2 PNW2369
8 Gear Pulley PNW2034
9 Clamper Base PNW2375
10 Clamp Cam PNW2364
11 DC Motor/0.75W PXM1010
12 Float Rubber B REB1287
13 Float Rubber G REB1288
14 Screw BPZ26P080FMC
15 Screw Z39 - 019
16 Screw PMZ26P040FMC
17 Pinion Gear PNW2055
18 DC Motor (CARRIAGE) PXM1027
19 D.C. Motor Assy (SPINDLE) PEA1235
20 Carriage Base PNW2699
21 Disc Holder PNW1608
22 Screw JFZ20P030FNI
23 Screw JFZ17P025FZK
24 Gear 3 PNW2054
25 Gear 2 PNW2053
26 Washer WT12D032D025
27 Pick Up Assy-S PEA1291
28 Guide Bar PLA1094
29 Gear 1 PNW2052
30 Gear Stopper PNB1303
Mark No. Description Part No.
31 Screw BPZ20P060FMC
32 PWB Holder PNW2057
33 Screw BPZ26P100FMC
34 Earth Lead Unit PDF1104
35 Screw BBZ26P060FMC
NSP 36 Mechanism Board Assy PWX1192
37 Clamp Magnet PMF1014
38 Yoke PNB1216
NSP 39 H Rubber PEB1249
40 Clamper S PNW1609
41 Loading Base PNW2376
42 D.C. Motor Assy (CARRIAGE)PEA1246
NSP 43 Servo Mechanism Assy SL AXA7017
44 Binder Z09 - 056
45 Connector Assy (4P) RDE1043
46 Connector Assy (5P) PDE1239
9
1
23
XC-L7
3. SCHEMATIC DIAGRAM
3.1 OVERALL CONNECTION DIAGRAM
4
A
FM/AM TUNER
A
MODULE
(AXQ7065)
CN6201
C
CD MAIN UNIT
(AWU7147)
B
CD KEYB1 UNIT
D
(AWZ8985)
(
C
1/2
C
,
2/2
E
CD KEYB2
J6201
UNIT
(AWZ8986)
)
J
POWER
HP UNIT
(AWU7006)
POWER AF UNIT
I
(AWZ8991)
M
C
AKE7001
CN3841
5569-02A1
CN3842
D
POWER
SPTB UNIT
(AWU7149)
J3801
DC
FAN MOTOR
AXM7003
POWER AMP UNIT
K
(AWZ8990)
10
1234
5
678
Note : When ordering service parts, be sure to refer to
"EXPLODED VIEWS AND PARTS LIST" or "PCB PARTS LIST".
XC-L7
G
CD CNB UNIT
(AWZ8988)
CD FLDP UNIT
F
(AWU7003)
DISPLAY UNIT
DU-L7
H
CD DPKEY
UNIT
(AWZ8989)
CN1202
173981-4
SINGLE
MECHANISM ASSY
(RXA1672)
SERVO
MECHANISM
ASSY SL
(AXA7017)
CN102
PICKUP ASSY
(PEA1291)
CN610
B
MECHANISM
BOARD ASSY
(PWX1192)
A
B
M
LOADING
MOTOR
CLAMP
SW
S601
POWER TRANSFORMER
ATS7216
REK1078
(2A)
POWER TRANS UNIT
L
(AWU7148)
AKP7027
(7A 125V)
AC 120V
60Hz
AC POWER CORD
ADG1152
(7A 125V)
C
D
11
5
6
7
8
1
23
XC-L7
3.2 FM/AM TUNER MODULE
4
A
B
RF AMP
OSC
MIX AMP
BUFFER
IF AMP
FM +B SW
C
AM RF TUNING BLOCK
FM/AM TUNER MODULE
(AXQ7065)
D
12
A
1234
5
678
XC-L7
A
AF AMP
B
CN3611
AF AMP
REGULATOR
C
PLL
D
A
5
6
7
8
13
1
XC-L7
3.3 PICKUP ASSY
A
PICKUP ASSY
(PEA1291)
(TS)
B
(TS)
(FS)
(FS)
(FS)
(TS)
(FS)
(TS)
(FS)
(TS)
(FS)
(TS)
(FS)
(FS)
(TS)
23
(FS)
(TS)
(FS)
(TS)
(TS)
(TS)
(FS)
(FS)
(TS)
(FS)
(FS)
(TS)
(FS)
(TS)
(FS)
(CD)
(TS)
(FS)
(CD)
(FS)
(CD)
(FS)
(TS)
4
1/2
C
CN1101
(FS)
(TS)
(TS)
(NC)
(CD)
(TS)
(FS)
SIGNAL ROUTE
(CD)
:CD AUDIO SIGNAL ROUTE
(FS)
: FOCUS SERVO LOOP LINE
(TS)
C
: TRACKING SERVO LOOP LINE
D
14
1234
XC-L7
• WAVEFORMS OF CD MAIN UNIT
Note: The encircled numbers denote measuring points in the schematic diagram.
TP1- Pin 1 :
2
PLAY MODE (RF)
H : 500nsec/div
TP1- Pin 1 :
2
TRACK SEARCH
MODE (RF)
H : 200µsec/div
TP1- Pin 6 :
3
PLAY MODE (FOER)
H : 10msec/div
1.2Vp-p
1.2Vp-p
0.2Vp-p
IC1201- Pin 3 :
5
PLAY MODE (FODR)
H : 1msec/div
IC1201- Pin 1 :
6
PLAY MODE (TRDR)
H : 1msec/div
IC1201- Pin 1 :
6
50T-JUMP(∗1) MODE
(TRDR)
H : 1msec/div
8
0.5Vp-p
9
0.5Vp-p
1.5Vp-p
∗1 50T-JUMP: After switching to the pause mode, press
the manual search key.
∗2 FOCUS-IN: Press the play key without loading a disc.
IC1202- Pin 3 :
TRACK SEARCH
MODE (CADR)
H : 200msec/div
5Vp-p
IC1101- Pin 32 :
PLAY MODE (EFM)
H : 500nsec/div
3Vp-p
IC1301- Pin 52 :
19
PLAY MODE (1kHz)
(PCMD)
H : 500nsec/div
TRACK SEARCH MODE
23
Upper:TP1-Pin1(RF)
Lower:IC1101-Pin 29
(MIRR)
H : 200µsec/div
PLAY MODE
24
Upper:TP1-Pin1(RF)
Lower:IC1101-Pin 30
(DFCT)
H : 200µsec/div
5Vp-p
1Vp-p
4.5Vp-p
1.5Vp-p
TP1- Pin 2 :
4
PLAY MODE (TRER)
H : 10msec/div
TP1- Pin 2 :
4
50T- JUMP(∗1)MODE
(TRER)
H : 1msec/div
IC1201- Pin 3 :
5
FOCUS-IN(∗2) MODE
(FODR)
H : 200msec/div
1Vp-p
3.5Vp-p
1.8Vp-p
IC1202- Pin 4 :
7
PLAY MODE (SPDR)
H : 50msec/div
IC1202- Pin 4 :
7
TRACK SEARCH
MODE (SPDR)
H : 50msec/div
IC1202- Pin 3 :
8
PLAY MODE (CADR)
H : 2sec/div
1Vp-p
6.2Vp-p
0.3Vp-p
IC1301- Pin 54 :
16
PLAY MODE (1kHz)
(BCLK)
H : 500nsec/div
IC1301- Pin 50 :
18
PLAY MODE (1kHz)
(LRCK)
H : 10µsec/div
5Vp-p
5Vp-p
IC1301- Pin 27 :
33
PLAY MODE (MDP)
H : 2µsec/div
IC1301- Pin 38 :
53
PLAY MODE
(PCO)
H : 10µsec/div
5Vp-p
3Vp-p
5Vp-p
15
1
23
XC-L7
3.4 MECHANISM BOARD ASSY AND CD MAIN UNIT(1/2)
4
A
SERVO MECHANISM
ASSY SL (AXA7017)
PICKUP
(FS)
(TS)
(FS)
(SM)
(SM)
ASSY
(TS)
(SM)
7
5
(FS)
14V
2
(TS)
1
-14V
4
TRACKING
DRIVE
(CM)
(FS)
(FS)
(SM)
(TS)
(TS)
(CM)
(PEA1291)
B
MECHANISM
B
BOARD ASSY
(PWX1192)
S610
DC MOTOR ASSY
(SPINDLE) PEA1235
(SM)
(CM)
(FS)
(TS)
(CD)
2.5V
6
(SM)
(CM)
14V
(CM)
CARRIAGE
DRIVE
(SM)
DC MOTOR ASSY
(CARRIAGE) PEA1246
C
SINGLE MECHANISM
ASSY (RXA1672)
S601
C
8
-14V
1/2
CD MAIN UNIT (1/2)
(AWU7147)
D
16
B
1/2C
1234
5
678
XC-L7
(CD)
(TS)
(FS)
(FS)
(TS)
(CM)
SIGNAL ROUTE
(CD)
:CD AUDIO SIGNAL ROUTE
(FS)
: FOCUS SERVO LOOP LINE
(TS)
: TRACKING SERVO LOOP LINE
2423
2
4
(TS)
(FS)
3
(CD)
(TS)
5V
(SM)
: SPINDLE MOTOR ROUTE
(CM)
: CARRIAGE MOTOR ROUTE
A
2/2
C
B
(FS)
2.5V
(TS)
(CM)
(CD)
24
23
9
(CD)
2/2
C
33
(SM)
C
0.01
YB
53
(CD)
0.01
YB
YB
0.01
18
16
19
C1322
W1308
C
2/2
D
1/2C
5
6
7
8
17
1
23
XC-L7
3.5 CD MAIN (2/2), CD KEYB1 AND CD KEYB2 UNITS
A
1/2
C
IC6101
PD4843B
B
SYSTEM CONTROL
4
(PB)
5V
(REC OUT)
(PB)
NO CONNECTION
C
(TX)
CN6201
A
(TX)
(REC OUT)
(PB)
DC 4.5V
DC 4.5V
(AUX)
-12V
DC 4.5V
(CD)
(TX)
18
1/2
C
CN3002
I
(CD)
2/2C
1234
D
(AUX)
CN3001
I
STBY : 0V
ON : -12V
STBY : 0V
ON : 12V
5
678
XC-L7
SIGNAL ROUTE
-28V
5.6V
ATX1012
GND DISP
L114
G
CN5703
S6201,S6202
: RSG1034
: LCH AUDIO SIGNAL ROUTE
(AUX)
: AUX AUDIO SIGNAL ROUTE
(PB)
: DECK PB SIGNAL ROUTE
(REC OUT)
: DECK REC SIGNAL ROUTE
(TX)
: TUNER AUDIO SIGNAL ROUTE
(CD)
: CD AUDIO SIGNAL ROUTE
A
C
CD KEYB1 UNIT
D
(AWZ8985)
CD MAIN UNIT (2/2)
2/2
(AWU7147)
Ever : 0V
TC POWER CONTROL
Ever : 0V
J6201
CD KEYB2 UNIT
E
(AWZ8986)
S6203 - S6207
: RSG1034
CD KEYB1 UNIT
S6201 :
S6202 : STANDBY/ON
CD KEYB2 UNIT
S6203 :
S6204 :
S6205 :
S6206 :
S6207 :
B
C
CAUTION : FOR CONTINUED PROTECTION AGAINST
RISK OF FIRE, REPLACE ONLY WITH
SAME TYPE NO. ICP-N20, MFD BY ROHM
CO., LTD. FOR IC3901 AND IC3902.
(AUX)
HP POWER CONTROL
12V
5
(AUX)
C3901
1/50
5V
D
CN101
K
2/2C
6
7
D
E
8
19
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