Pioneer XC-L77 User manual

Service
Manual
STEREO CD RECEIVER
C-L77
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
| NVXK | Oi C23 0v ee ee ees
@ This product is a system(s) component.
Be sure to connect it to the prescribed system component(s), otherwise damage may
result.
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ORDER NO.
RRV2187
SPEAKER SYSTEM
CONTENTS
1.
SAFETY
INFORMATION
crscesstscsrsesteeeteseterseeeseeees
2
7.
GENERAL
INFORMATION
crvesecsrceeeeersesererteenres
45
2.
EXPLODED
VIEWS
AND
PARTS
LIST
«evseeeeeree®
3
7.1
DISASSEMBLY
ccccesssssesseseeeseeseeesessueeeeeenenes
45
3.
BLOCK
DIAGRAM
AND
SCHEMATIC
DIAGRAM:
10
TB
PARTS
ssseenescniiisentensiscacassssesassaessvenesesarevesteens
48
4.
PCB
CONNECTION
DIAGRAM
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FDA
NC
Beene
ois
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ctenss
cole
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48
5.
PCB
PARTS
LIST
cccressscsssessecssereerteseeesteestsnnasenees
36
7.2.2
DISPLAY
sccccesssccrecsteeeeeeeessecessseneenanesseaes
54
6.
ADJUSTMENT
PUP
Orne
ner
eccscacesnsetenesreneseereenetteeeseneoe
42
8.
PANEL
FACILITIES
AND
SPECIFICATIONS
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52
PIONEER 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
©PIONEER CORPORATION 1999
T-ZZK AUG. 1999

XC-L77
1. SAFETY INFORMATION
LITHIUM BATTERY NOTICE
WARNING!
Lithium batteries. Danger of explo-
sion. Replacement must be done by
qualified personnel and only by fol-
lowing the instructions given in the
service manual.
This warning is stated on the product or
in the operating instructions. When replac-
ing the lithium batteries, follow the note
below.
Dispose of the used battery promptly.
Keep away from children. Do not disas-
semble and do not dispose of in fire.
The battery used in this device may present
a fire or chemical hazard if mistreated. Do
not recharge, disassemble, heat above
100°C or incinerate. Replace only with the
same Part Number. Use of another battery
may present a risk of fire or explosion.
Note: The lithium battery installation po-
sition is shown in the exploded views.
LABEL CHECK
VORSICHT |
ADVARSEL
USYNLIG LASERTRALING VED
ABNING NAR SIKKERHED SAF-
BRYDERE ER UDE AF FUNKTION.
UNOGA UDSATTELSE FOR
STRALING.
VARO ! VARNING !
Avatteessa ja suajelukitus ohitetta- Osyniig laserstratning nar denna del
essa clet alttiing nukymattomille Ur Spenad och sp#ran dr urkopplad.
lasersiteilylie. Alz katso séiteeseen, Batrakta ej stralen. ARW1047
UNSICHTBARE LASER-STRAHLUNG
TRITT AUS, WENN DECKEL(ODER
KLAPPE)GEOFFNET IST! NICHT
DEM STRAHL AUSSETZEN!
CAUTION NVXK type
INVISIBLE LASER Lala
WHEN OPEN, AVOID
EXPOSURE T0 BEAM |,
CLASS 1
LASER PRODUCT CE
PONNER ELECTRONIC CORP.
MADE IN THE UK
FABRIQUE EN
GRANDE SRETAGNE
SERIAL.NO.
MYXK type
Additional Laser Caution SS
1. Laser tnterlock Mechanism
. When the cover is opened, close viewing of the objective
ADVARSEL!
Lithiumbatteri - Eksplosionsfare ved
fejlagtig handtering. Udskiftning ma kun
ske med batteri af samme fabrikat og
type. Levér det brugte batteri tilbage ti!
leverandgren.
Denne advarsel or angivet pa produktet
eller i brugsvejledningen. Ved udskiftning
af lithium batterierne folges nedenstaende
anveisning.
Batterierne ma kun udskiftes med batteri-
er af samme type og marke.
The loading position detect switch (in CD mechanism
assembly) is set to "CLMP ON(CD CLOSE)" (ON:low
level,OFF:high level) position, the system control
1C(1C5501) get the "CLMP" signal, and hand the laser
"LDON" signal to 101101.
Then a laser diode can be lighted except when the level of
signal CLMP is low.
The interlock also does not function in the test mode.
Laser diode oscillation will continue, if pin 1 of CXA1821M
(101101) on the RF UNIT is connected to GND, or pin 19 is
connected to !ow level (ON), or else the terminals of
Q1101 are shorted to each other (fault condition).
lens with the naked eye will cause exposure to a Class 1
laser beam.
Refer to page 42.
IMPORTANT
THIS PIONEER APPARATUS CONTAINS
LASER OF CLASS 1.
SERVICING OPERATION OF THE APPARATUS
SHOULD BE DONE BY A SPECIALLY
INSTRUCTED PERSON.
LASER DIODE CHARACTERISTICS ———
MAXIMUM OUTPUT POWER: 5 mW
WAVELENGTH: 780 - 785 nm
,

XC-L77
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 A mark found on some component parts indicates the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
@ Screws adjacent to W mark on the product are used for disassembly.
2.1 PACKING
2
ext
a
NE
re
2
a]
Sy
: i
5 15 | !
MYXK type S l | |
only
8
|
i
MYXK type g |
only
7
:
|
6 ie.
NVXK type
only
10(1/2)
10(2/2)
™~ i. Cee 3
16 i Vas |
a ‘
4 y i
io 1
REMOTE
ra
CONTROL
v”
MYXK
type
16,” only
11(1/2)
9(1/2)
DISPLAY
UNIT
(1) PACKING PARTS LIST
Mark No. Description Part No. Mark No. _ Description Part No.
A 1 AC Power Cord See Contrast table (2) 11 Pad Display AHA7262
2 AMLoop Antenna ATB7007 12 eeccs
3 FM Wire Antenna ADH7005 13 Packing Case See Contrast table (2)
4 Display unit connecting cord ADE7014 14 Packing Sheet 223-007
NSPA 5 _Lithium Battery(CR2025) VEM1009 15 Polyethylene Bag 221-038
6 Operating Instructions See Contrast table (2) NSP 16 Polyethylene Bag CEG1116
7 Operating Instructions See Contrast table (2) NSP 17 Warranty Card ARY7022
8 Operating Instructions See Contrast table (2) 18 Sub Packing See Contrast table (2)
9 Pad Front AHA7260 A 19 Fuse (T5A) See Contrast table (2)
10 Pad Rear AHA7261
(2) CONTRAST TABLE
XC-L77/MYXK and NVXK are constructed the same except for the following :
AC Power Cord ADG7010 ADG7009
Operating instructions (English) Not used ARB7195
Operating Instructions (Dutch/Swedish/Spanish/Portuguese) ARC7250 Not used
Operating Instructions (English/French/German/Italian) ARE7221 Not used
Packing Case AHD7766 AHD7768
Sub packing Not used AHD7770
Fuse (T5A Not used AEK7001

XC-L77
2.2 EXTERIOR
53 (1/2)
15
Refer to "2.3 CD MECHA (1/2)"
"2.4 CD MECHA (2/2)" .

(1) EXTERIOR PARTS LIST
NSP
NSP
Description
FM/AM TUNER UNIT
AMP UNIT
STBY SW UNIT
SECONDARY UNIT
PRIMARY UNIT
HP UNIT
MAIN UNIT
RF UNIT
SPEAKER UNIT
AUX UNIT
CONNECTOR UNIT
KEYR UNIT
KEYL UNIT
BLUE IND. UNIT
CD MECHA
Power transformer (T1)
DC Fan Motor
Fuse (FU1 : T1A)
Heat Sink
Screw
Heat Plate
Screw
Screw
Bottom Base
Leg
Name Label
Bottom Plate
Jack (JA5551)
Screw
Sheet
(2) CONTRAST TABLE
XC-L77/MYXK and NVXK are constructed the same except for the following :
Mark | No. Symbol and Description
Para Name Label ARW7066 ARW7067 ead
NSP_| 61 | Caution Label ARW1047 ARW1050
Part No. Mark No
AXQ7226 31
AWU7376 32
AWU7386 33
AWU?7378 NSP 34
AWU7379 35
AWU7382 36
AWU7374 37
AWU7380 38
AWU7377 NSP 39
AWU7381 40
AWU7375 41
AWU7383 42
AWU7384 43
AWU7385 44
KSL-2130CCM 45
ATS7256 46
AXM7014 47
AEK1054 48
ANH7108 NSP 49
BBZ30P140FMC 50
ANG7250 51
BBZ30P060FMC 52
BBZ30P300FMC 53
AMA7013 54
AEB7090 55
See Contrast table (2) 56
ANF7016 57
RKN1026 58
BBT30P060FZK 59
AEE7034 60
NSP 61
NSP 62
Description
Power Button Assy
TR Barrier
Screw
Binder
Power Barrier
Connector Assy
Connector Assy
16P Flat Flexible Cable/30V
Cord with Plug
Screw
Screw
Connector Assy
Connector assy (J5101)
Card Spacer
Rear Panel
Rear Cover
Screw
Center Barrier
Top Plate
Push Rivet
Tray Panel
Tray Line
Top Panel Assy
Button Assy A (>/I1)
Button Assy B (4)
Main Line
Front Line
CL Lens
Bonnet
Sub Barrier
Caution Label
Fuse Card
MYXK Type NVXK Type
XC-L77
Part No.
AWL7049
AEC7213
BBZ40P060FMC
ZCB-4772B
AEC7196
PGO5KK-E20
PGO6KK-E20
ADD7185
DE010VFO
PDZ30P060FMC
VPZ30P080FZK
PFO3PP-Q20
PG14KK-E07
AEC7214
ANC7826
AAX7705
PCZ30P080FZK
AEC7198
ANF7017
AEC7221
AAN7194
AAP7059
AWL7050
AWL7044
AWL7045
AAP7058
AAP7066
AAX7704
AMA7015
AEC7197
See Contrast table (2)
AXX7033

XC-L77
2.3 CD MECHA (1/2)
e CD MECHA (1/2) PARTS LIST
Mark No.
NSP
+
OO OND afron—
11
12
13
NSP 15
Description
Tray(C)
Cover(S),Gear
Gear(S), Tray
Plate(S),Chucking
Screw +PTPWH2.6*7
Chucking Yoke(S)
Magnet
Damper(S)
Chucking Pully
Sub Chassis 2130
Coil Spring (Front)
Coil Spring (Back)
Washer 2130
Screw+P2.6*10 NOSLIT
Part No.
2-646-290-01
2-625-544-(01)
2-625-535-(01)
2-625-546-(01)
2-625-537-(01)
1-452-493-(21)
2-625-541-(02)
2-646-291-(01)
2-646-288-(0
2-627-236-(0
2-627-235-(0
2-646-289-(0
1)
1)
1)
1)
NSP
NSP
Mark No.
16
17
18
19
20
21
22
23
24
25
26
27
28
29
Description
Insulator
MD Assy
Outsert Main Chassis
Screw +PTPWH2.6"16
Drive Gear (S)
Control Cam(S)
Leaf Switch
Connector Pin 5p
Loading PC Board
Loading Motor Assy
Midway Gear (S)
Loading Pulley (S)
LM Berut
Screw +B2.6*2.5
Part No.
2-627-234-(01)
2-625-552-(06)
3-319-501-(51)
2-625-547-(01)
2-625-545-(04)
1-692-667-(11)
1-564-721-(11)
1-640-523-(11)
X-2625-117-(1)
2-625-534-(02)
2-625-536-(02)
3-653-387-(00)

XC-L77
2.4 CD MECHA (2/2)
No supplied part
Pp a
¢ CD MECHA (2/2) PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 Motor Chassis Assy X-2625-984-(1) 11. Ring(LO)(S),Center 2-625-477-(01)
2 Motor Gear Assy X-2625-769-(1) 12 Screw2*5,Tapping(S) 2-641-386-(01)
3 Sled Shaft 2-626-908-(01) 13 Reinforcement(S) 2-625-625-(01) ©
4 Gear (A)(S) 2-625-188-(02) 14 KSS-213C(Pick-up) 8-848-483-(05)
NSP 5 Screw +P2*3 eeece
6 Leaf Switch 1-572-085-(11)
7 Motor(6p)(S)PCB 1-639-678-(12)
8 Connector Pin 6p 1-564-722-(11)
9 Gear(B)(RP) 2-627-003-(01)
10 Spring(S)Compression 2-625-191-(01)

XC-L77
2.5 DISPLAY UNIT
e DISPLAY UNIT PARTS LIST
Mark No.
{
NSP 2
3
NSP 4
5
6
7
8
9
10
11
12
Description
FL UNIT
FLSUB UNIT
Display Panel
Magnet
Display Plate
FL Filter
Window
Display Cover
Leg
Screw
Screw
DETACH UNIT
Part No.
AWU7387
AWU7388
AMB7630
PMF1010
AAH7056
AEC7195
AAK7668
AMC7033
AEB7090
VPZ30P080FZK
PCZ30P080FZK
AWU7389

2.6 REMOTE CONTROL UNIT
e REMOTE CONTROL UNIT PARTS LIST
Mark No. Description Part No.
1 CONTROL UNIT AWU7390
2 SWITCH UNIT AWU7411
3 TERMINAL UNIT AWU7412
4 ecccee
5 Control Panel AMB7631
6 Controi Plate 1 AAH7051
7 Control Plate 2 AAH7052
8 Control Button AAD7530
9 Light Barrier AEC7201
10 VOL. Button (MENU, o) AAD7540
Mark No.
Description
VOL. Button (/\, V )
Control Cover
Spacer
Screw
Leg
Rear Sheet 1
Rear Sheet 2
Magnet Plate
Battery Cover
XC-L77
A
Litium Battery
Part No.
AAD7542
AMC7034
AEB7163
VPZ30P080FZK
AEB7090
AED7037
AED7032
ANG7255
AMC7035

1 = 2 = 3 i) 4 r |
XC-L77
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
F acu IN| AUX UNIT (AWU7381
Welz
KEYR
UNIT
(
Pes
HP
UNIT
BLUE
IND.
UNIT
gers
(AWU7383)
So
——
(AWU7385)
Fomor
oe
AUX/CD-R
oe (NUM4558MD) IN Wi esues
[4 ss VkB1046
KEYL
UNIT
Obra
gn
o
prosee.
cose
(AWU7384)
3882
2°"
z
ak ° KNOEGKG OOOG6
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S 3 é 5 5 8 & a 5 Bae Fy-K~S @& x pout xwaeeise é g a 8 &
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TUNE K@)| |@} IC (eo ( @ —8 GNDA
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FM/AM = 016 | ® ala ll"
TUNER rele @ On a PSL
UNIT GNOTX 1) 9 GNDLED
ae ©)
(AXQ7226)
mel@SS@}
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(NUM4558MD) FUN CN5@14 CNS@12 AKP7@64
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CN1301
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PG@6KK-E20 B68-PH-K-S (2 @ DREQ
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AKP7@96 4 Fe 2 SO $7B-PH-K-S
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© ~ (BOOmA, 125V) (AWU7378)
@ — T2: ATT7056
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1 = 2 = 3 = 4 a

8
XC-L77
Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST".
mp: AUDIO SIGNAL ROUTE
i i a ia ia i
DISPLAY UNIT
cer SYSTEM CONNECTOR
our FROM MJ-L77 OR CT-L77
JA6801
AKP7128
hs 7)
( #
J5904
I
eee As Stl D20PWWO3e5E
jUNIT @| suzzer SWITCH
| @ v+et UNIT
(AWU7411)
CONNECTOR UNIT
(AWU7375)
J5902
D2@PWWOSO5E
enooise TERMINAL
enootisp) UNIT
(AWU7412)
[a] ame unit
(AWU7376)
CONTROL UNIT
(AWU7390)
1€5221, 1C5222 {C33
aiee7
1C3303
491001F
(1A, 125V) A (1A, 125V)
MUTE
CN5@22
AKP7@57
a
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ba mm Z
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©
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NY CN3307 CN3304
pee + i —= AKP7068 arr os ig ~o ies Z : Y 4
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RY3602
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fan? 3|? 5 8 8 815 8 IS (AWU7377) ga 86 868d a 3 2
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t § Ax NEUTRALL@) NVXK : ADG7009
ADX73@5,
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12

a 5 = 6 = 7 = 8
XC-L77
Notes
1,.RESISTORS
Indicated in 2, 1/10Wt5% Tolerance unless
otherwise noted K:KQ, M:MQ.
2.CAPACI TORS
Indicated in Capacity (#F)/VOLTAGE (V) unless
otherwise noted P:PF.
3.DIODES
No mark diode is 185254.
'
ATF7009
2: (4| RDS
NC
cE
DI
"Reena CLK Oo
mes 3 Reh ip
2
58 lo GND Oo
=u, cez62 tole ols h
= 5.3750 borat ole Le N
ap | ae |" T™ pata|
- Indeaoee S16) WE,
Pl 278
ae
2
+5V
<3 e
eee
8,
B
|
lo)
erenes
2 58 38 CN6201
ai | B14B-PH-K-S
Q6203 H
(aaa 28C2705-T |
=
'
|
vsgzene Se
ae ==]
F6202 |
ATF7041 '
R6216 26206 j
oforel - |
GND GND GND |
C6254 :
Fa pili |
os VvOSL
ip
(6208
'
SToS|szZ Sia
3) °n* ‘
GND GND GND |
H
R6277 |
700 !
t
[
a 5 id 6 = 7 = 8

1
XC-L77
3.3 RF and MAIN (1/2) UNITS
ALL CAPACITORS ARE IN uF
UNLESS OTHERWISE SPECIFIED
ALL RESISTORS ARE IN 9
TL tCETLA WH -RS1/1 BSI
a ae u piel WAX = RS1/1 OSOKE
CCSQCH
} ve :CKSQYB
ale SL :CCSQSL
(OTHER :CKSQYF) LAU
te AL 'CEAL LFA
JA :CEJA ory OLCTA
(OTHER : CEAT>kxM#H)
CN1302 OUT4 alii
BSB-PH-K-S
cDcLose |(6)
com | 4)
CN1301
BOB-PH-K-S
sp+ |@)
To CD MECHA To CD MECHA
[=] RF UNIT
(AWU7380)
1191
rate | ‘a
To CD MECHA (PICKUP)
ALL INDUCTORS ARE IN 4H
OST] :
at ot a at
Boe
aaa bt 10078. 3
—~
setae
| (1/2
MAIN UNIT
(AWU7374)
Fe
Tae ae a
Med R238 (TN
33K

: CD AUDIO SIGNAL ROUTE
: FOCUS SERVO LOOP LINE
: TRACKING SERVO LOOP LINE
: SPINDLE SERVO LOOP LINE
: CARRIAGE SERVO LOOP LINE
: LOADING SERVO LOOP LINE
FOR CONTINUED PROTECTION
AGAINST RISK OF FIRE.
REPLACE ONLY WITH SAME TYPE] &
NO. ICP-N20 FOR IC5521 MFD,
(COUT)
(MIRR) 2
COR
sa ? 206m
_ <a18 ; LOUT2(R) § SS 1 ad 2. 2K
pee
AVss2
Bar
sax
GNDA
Ant) SRDR 1€1201 autre E S Sry |
on TFDR CXD2587Q AIN1 F 8 = a1" - ‘ ae
os AouT1 & 2 A b K (Vi
Sip 422 a8 Fuku »
Fi Ent sal
é
(92/2
DOUT
mf
aig
Mr"t
11231 LFA
10
Note: The encircled numbers denote measuring point in the schematic diagram.
i
1C1101-
Pin
16:
IC1101-
Pin
13:
PLAY
MODE
(RF)
TEST
MODE,
H : 500nsec/div Tracking Open (TRER)
H : 5msec/div
I
1.2Vp-p
3.5Vp-p
WR
| TREY ve
eas I
| VC :1C1101- Pini2
|
:
The
power
supply
is
shown
with
the
marked
box.
2
a
5
=
6
=
7
=
8

1
XC-L77
3.4 MAIN (2/2), KEYR, KEYL, BLUE IND. and STBY SW UNITS
(i cns011
[0] 2/2 main UNIT (awu74374
G12,
PCB BINDER CD BLOCK re
VEF1@4a x 2
coxtat §
coscik &
NC
NC
cole
core &
cosens #
cogrs &
corox 2
cp cLose 4
cp open &
CD INSIDE
KeY1
C5501
PDG248A
DESTINATION #2
SDATA|@®
(S) SCLK| ~ @)
SREQ] 69
FANDET| (Q
HPSW| 4B
MDPOW|
SPCONT|(@
FLCLK @t—
FLDAT| 4) I
FLCE| G—
DDAT|€2
DcLk] — )
DREQI(Q)
xPowoN| _ (8)
MUTEI@)
v+5.61 @)
CIN
GNpA| _ ©)
RIN|(@)
aS juss
Ye)
Ww)
za
Oo
rrepereestree_
ae
tee
83B-PH-K-S
Sis Bie
B: les
WuTE BTA? 24EK
(TX)
Sh ———
hy SS
FD
dcain172) 2p
55EMD val
103181
BU4@52BCF
103111(2/2)
NuM4558MD

=~,
(TX)
NOTES ALL CAPACITORS ARE IN wF ALL RESISTORS ARE IN
R3080
SK c3é04 F c3aos t
3. 3k C3094] c3003 RS0GS
: REC AUDIO SIGNAL ROUTE
: PB AUDIO SIGNAL ROUTE
5 = 6
: AUDIO SIGNAL ROUTE G
: TUNER AUDIO SIGNAL ROUTE VE+56
CN5901
XLEDPOW
KEY!
GNDD
S4B-PH-K-S
cNbo v412
: AUX AUDIO SIGNAL ROUTE eS @) c.6 @ YE
XLEDPOW 2)
(S)
(4)
PF@6PG-BQ7
DLED
RDSCLOCK
UNLESS OTHERWISE SPECIFIED pear 4/1@W(CHIP)
ah sGawsa 8 da EGA
Typ SH :cosecu oneeen
at 38 enoer8 CEAT#X4MBH)
LS :CKLSR
(OTHER :CKSQYF)
5
AW 174WPU
ALL INDUCTORS ARE IN aH
SOON LAU
Tym LCTA
2PB7@9A (QR) 2PD68:
@924) 2P as023 om 523 4 (GR) oe
N 1 a R5921 for a Se &
OHO ES) gupta
az Beg ROR oR
ae EV a * ~ [> [>
8
XC-L77
STBY SW UNIT [>) KEYR UNIT BLUE IND. UNIT
(AWU7386) . (AWU7383) 1.355 (AWU7385)
51848-0200
$5801~5603
+ASG7013
05804
UDZS8. 2B
TE] KEYL UNIT
(AWU7384)
CN5101
B14B-PH-k~S
TXYRDS
=a
es ecru
aie
et
N
v8
|
cs713iL | tosr4
% 1
(TX) 1 i a 47p
IOD
HPPO
t
GNDAC
+g o
3 8 2 a
oO oO
S 2 8 8
13201 (1/2) - = a
NuM4558MD VeD+5 VcCD+56
CENTER
GNOCD GNDCDM
_ Ee.

1
XC-L77
3.5 AMP, SPEAKER, SECONDARY and PRIMARY UNITS
ices
A B82 SuSE Gy e282 |
L/R AMP.
163301
STK407-0408
28D2114K (VW)
Q3311 R33 4
aPe8
y, ay fs BeBe
(CP
> Al 6. “Bx 2eg
Q3411
2SD2114K (VW)
ALL CAPACITORS ARE IN aF
UNLESS OTHERWISE SPECIFIED
he TL +CFTLA
+CQMBA
GNDPACK
SA
= = ~~ =
|
|
|
|
1C23
|A17805T
M
HA :CQHA
ppt ae
YB 130] aKp7a6a AKP707@
SL
A A
+CKSQYB
+CCSQSL
it! I
Ck :CCSQCK
(OTHER + CKSQYF)
AL :CEAL
JA i CEJA
(OTHER: CEAT#ORKMHH)
ALL RESISTORS ARE IN 9
¢
| |FOR CONTINUED PROTECTION
|. |AGAINST RISK OF FIRE.
wa 1/1 BW (CHIP)
ww 174WPU
(F) RFA1/4PS
FL RD1/4LMF
MU RD1/4MUF
Be
} JNO. 491001F FOR IC33 MFD, BY
[LITTELFUSE INC
a | -————"A_ A
PF1@EN-S18@ B1@B-EH
ES Ji CN3308
seach eae i emcesindi gamete ee
ALL INDUCTORS ARE IN aH
K PRIMARY UNIT]
(AWU7379)
[arneTaierear —
Fut
1 uA cA
anil ATF-151 ACG7E) 0. va sa
ee 9 of ee poze
INEUTRAL|@)
AC IN ne 246 aceroi0 A
Capacitor cover
| "
VEC1912 X2
eae | |
2)
* NOTE FOR FUSE REPLACEMENT mi cP
x
CAUTION
-
a
ARP
TIS
S786
-
(2) 3 GNDDISP
FOR CONTINUED PROTECTION AGAINST|I_® VEF104@ x1 oneees 22 ‘a
RISK OF FIRE. REPLACE WITH SAME Pa Se EOP
TYPE AND RATINGS ONLY.
ee,
CAUTION : FOR CONTINUED PROTECTION | A
AGAINST RISK OF FIRE. ‘ Capaot ior cover ere
REPLACE ONLY WITH SAME TYPE é fe SCHEV
et
}
NO. 491005 FOR IC1, IC2 AND IC4, SUB TRANS.
© O S84 1k
susac | CN5031
POWON
E+56
G1)
(@)
(3)| FLAC1
()| FLac2
(5)
(6)
@)
491.008 FOR IC3, 491007 FOR ICS
AND IC6 MFD, BY LITTELFUSE INC.
PFO7PG-Q20
SECONDARY
UNIT
t= (AWU7378)

8
XC-L77
m : AUDIO SIGNAL ROUTE
ee
! | MOM sPeaker unit
sqyssor
—oyggoe
a
iene
casa
AKP7072
28D2114K (VW)
WOOFER LEVEL CONT
GND+1
V+4 ?ISPCN3307 A
AKP7@68
(4) _ |UN-6
Le (2)|GNDP N
rE (3) _ |@NDUN S
ro (4) ]@NDUN Ww
mi (6) |un+s z
al ©J|ranneT | O)
ir (@)|@NDF
V+1 2FAN (@) _|v+12D1SP,
3723 c
een Es CN3701
KM28@SA2
= i FAN Jog fan
eae
93704
OTC124EK
LEVEL DET.
1SS355
C3703
R838
— 3705
V+1 2RYE" = = 2SB1237X (QR) VFAN- abr CN3331
AKE7001 ea
x eel Ts eS Ww
= ee Bre ae
fag
ie
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a
=
=r
j
Ht
f
S54
n
=a Cory Ther = 5 anor Po
al wb 3 :
mei ara tleoe
Be Be So Fo ge | ca
SF ase pevhertorkerher a eye
& (Di-euwe SBC 1 AsQR fora ce i P
e's
Fae Ss
Lee.
=e CHASSIS
uy
GI 6F |
I
PROTECTION
: The power supply is shown with the marked box.
8

(2/2. cn5013
[9}2/2 cns014
1 La 2 = 3 = 4 a
XC-L77
3.6 CONNECTOR, HP and AUX UNITS
i
"Reger
BSB-PH-K-S
PFOSPG-Ca0~SSCSsSC
fo
oS
eae
ee
Gear ‘ aeate Q1 |
|
oTAT24EK
cr
ree
||
PHONES
ms : (| z
tine omni irc
co
i]
1 SDE) OW) Wee a ; | CN3091 CN3592
| = ee | Ua ypuszi@
. {) aed iti bed AUXR
3 H (2) (2)
CN5011 RS80. I pad eee
AKP 7064 iy : GB) ND ®
ae
lA
sal
ee
SUBAC] OD) 4 I (4) 4)
vep+56m| @) VAG : bal
ee
a
LHe
unit
Dl
<a
ee
a
2
ee
eae
a
!
KM2@9I1B5
KP2QQIBS5L
GNDCDM (9 (AWU7 2 CHASSIS 1
nee acd DR (L! 382) |
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GNDA| QE) were
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|
|
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cs
|
|
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ae
ed
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ae
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GNoLED|@) ——}——_—_ ++] ||
ave Pees A Pee ee et a eas z .
GNDA|
(@)
pee
Pe
nux.|~ @te—H pene tH i”
Cc eal een Cae ee ee Ha ————_—_—— =
ae
ee
7
2
cre
a
7
Vt+12 (4) Boe eee rem 1 | cae
TCPOW om |||| | +12] > aa
REM REM :
we] @L___ UL m
I
AKP7064 S
ae eo O] woo
Se MENS
pet onbav
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=
GNDA
LIN|(2)
=
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ey
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Be
ee
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ee
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L881 [O81 O || O/@| ©] O| OBsO | © | ©} @/ © ID @ © @ © © OB —-—
|
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©
&
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PLLECOOOOE:
S2Ee ZK ZNT-WNOOSNNND oozzorEy SG 2 ep e@y « rd i
"33538 2a ae ee
o >
Wl cns305 Hl cn3307 Jk
1 = 2 = 3 = 4 |