Sony HCD-HPR90 / HCD-HPR99XM Service Manual ▷ View online
HCD-HPR90/HPR99XM
5
5
HCD-HPR90/HPR99XM
2-3. SCHEMATIC DIAGRAM – MAIN Section (2/3) –
Q1501
R1520
R1518
IC1501
IC1203
IC1202
IC1201
IC1502
Q1508
Q1503
Q1504
C1213
R1558
R1559
R1513
R1202
R1506
R1556
R1501
R1551
R1502
R1552
R1363
R1361
R1521
R1519
R1515
R1565
R1554
R1503
R1553
R1557
R1510
R1560
R1201
R1203
C1207
C1205
C1212
C1209
C1201
C1203
C1563
C1562
C1561
C1555
C1504
C1513
C1512
C1511
C1505
C15
02
C1558
C1508
C1532
C1565
C1515
C1552
C1507
EP1201
Q1502
CN1203
CN1202
CN1201
Q1509
IC1204
C1501
C1522
C1521
C1520
C1523
C1519
C1518
C1503
C1208
C1206
C1531
C1202
C1217
C1204
R1504
C1550
IC1503
R1555
Q1510
C1506
R1512
R1511
R1575
IC1504
Q1505
R1514
R1516
IC1505
R1523
C1526
JW1612
R1507
C1517
R1505
JW1613
C1567
IC1205
C1211
C1509
C1559
R1525
CN1310
C1576
R1573
D1208
D1209
D1210
D1213
D1204
D1205
Q1602
R1605
R1606
Q1601
CN1301
CN1302
CN1205
R1550
JR1502
JR1501
RT1N141C
220k
220k
BD3870FS
TA7804LS
TA7809S
NJM4580MD
RT1N141C
RT1N141C
RT1N141C
0.01
2.2k
2.2k
2.2k
10k
10k
10k
220
220
10k
10k
0
0
10k
10k
100k
100k
4.7k
1k
1k
47
100k
100k
100k
22k
470
10V
10V
470
10V
10V
470
10V
10V
220
10V
10V
2200
25V
470
16V
16V
1 50V
1 50V
10 50V
10 50V
220
10V
10V
1 50V
1 50V
10 50V
10 50V
220
10V
10
50V
10
50V
100
16V
16V
10
50V
10
50V
100
16V
16V
100
16V
RT1P141C
2P
2P
3P
RT1P141C
MM1615ANLE
0.1
0.0022
0.1
0.1
0.0022
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.01
0.1
4.7k
220
16V
16V
RT3C55M
22k
2SC3052
0.1
10k
10k
1k
RT3C55M
RT1N141C
2.2k
10k
MC14052BDTR2
100k
1
50V
47
220
10V
22k
220 10V
TA7807S
0.1
1
50V
1
50V
1k
9P
1
50V
100k
1N4002B
1N4002B
1N4002B
1N4002B
MC2836
1SS355WTE-17
2SA1235
10k
1k
RT1N141C
15P
19P
3P
4.7k
0
0
A3
A4
A5
A6
A7
B1
B2
B3
B4
B5
A1
60
61
63
58
51
59
65
C1
C2
A1
A2
B1
B2
C1
C2
56
55
54
53
66
67
68
69
70
71
72
73
75
83
32
31
85
18
21
82
SC
VIN1
SEL1
VIN2
SEL2
A1
A2
B1
B2
C1
C2
FILTER
GND
SI
VCC
CAP
OUT2
OUT1
BOUT2
BNF2
BOUT1
BNF1
TNF2
TNF1
12V
GND
GND
GND
DO/STEREO
ST CLK
ST DIN
ST CE
R OUT
AGND
L OUT
+9V
4V(SUB)
NC
C2
B2
E2
E1
B1
C1
C2
B2
E2
E1
B1
C1
IN
H
V
E
E
G
N
D
V
C
C
Y
0
Y
2
Y
Y3
Y
1
B
A
X3
X0
X
X
1
X
2
VO
VI
CONT
GND
NOISE
POWER ON/OFF
(CHASSIS)
(2/3)
+12V REGULATOR
G I
O
I
O
G
I
O
G
+9V REGULATOR
+4V REGULATOR
+5V REGULATOR
INPUT SELECTOR,ELECTRICAL VOLUME,
SURROUND/TONE CONTROL
+7V REGULATOR
I
G
O
Q1501,1502
MUTING CONTROL
SWITCH
MUTING
HEADPHONE AMP
GND
VCC
RIPPLE FILTER
Q1508,1509
MUTING CONTROL SWITCH
MUTING
INVERTER
INVERTER
INVERTER
SELECT SWITCH
/OTW
OVF
/RST
DGND
/SD
DGND
INIT
D+3.3V
AGND
AGND
A+5V
PGMUTE
SOFTMUTE
SCDT
SCSHIFT
SCLATCH
NSPMUTE
L-IN
R-IN
AM
ANTENNA
COAXIAL
THE ASSEMBLED
BLOCK
SUPPLIED WITH
TUNER
(FM/AM)
14V
(HPR99XM)
TUNER/XM
(H
P
R
90)
(H
P
R
90)
Q1601,1602
B+ SWITCH
RST#
ERR-IRQ#
CDM-SEL
DGND
DGND
SC-RX-IN
SC-TX-OUT
+9V
R-OUT
AGND
L-OUT
(HPR99XM)
(HPR99XM)
XM DVCC +5V
XM AVCC +5V
XM PWR +3.3V
XM POWER
µPC2912HF
FM75
Ω
(Refer to page
29 on original
service manual)
29 on original
service manual)
(Refer to page
35 on original
service manual)
35 on original
service manual)
(Refer to page
35 on original
service manual)
35 on original
service manual)
(Refer to page
27 on original
service manual)
27 on original
service manual)
TO
XM REG BOARD
(Refer to page
24 on original
service manual)
XM REG BOARD
(Refer to page
24 on original
service manual)
(Refer to page
29 on original
service manual)
29 on original
service manual)
(Page 4)
(Page 6)
•
See page 37 for IC Block Diagrams.
HCD-HPR90/HPR99XM
6
6
HCD-HPR90/HPR99XM
2-4. SCHEMATIC DIAGRAM – MAIN Section (3/3) –
(Page 4)
R1692
R1642
R1693
R1643
R1646
R1648
C1636
C1665
CN1309
CN1307
R1615
R1674
R1631
R1616
Q1607
R1621
C1628
C1612
C1615
C1616
C1613
R1603
D1206
D1207
D1212
D1211
R1604
R1625
R1629
R1628
R1632
R1633
R1627
R1626
C1635
R1623
Q1608
Q1609
R1630
R1634
R1635
R1636
R1637
R1640
R1641
R1639
R1638
Q1606
R1622
C1603
R1620
R1619
C1664
C1614
Q1610
Q1612
Q1611
Q1613
Q1615
Q1617
Q1614
Q1616
C1629
CN1308
C1214
Q1618
R1645
R1422
R1644
1k
1k
10k
10k
1k
1k
0.001
0.001
23P
9P
2.2
0
470
2.2
KTA1273Y-AT
4.7k
0.1
0.1
0.1
220
10V
220
10V
22k
1N4002B
1N4002B
1N4002B
1N4002B
22k
10k
470
47k
470
47k
470
47k
220
10V
10V
470
2SC3052
2SA1235
47k
47k
470
47k
470
470
47k
470
47k
2SA1235
2.2k
0.1
1k
1k
2SA1365EF
2SA1365EF
2SC3440F
2SC3440F
2SC3440F
2SC3440F
2SA1365EF
2SA1365EF
220
10V
10V
15P
470
10V
10V
2SA1235
47
47k
10k
C1
C2
C3
C4
B1
B2
B3
B4
B5
C5
C6
C7
C8
C9
100
41
42
39
40
38
A1
A2
M2-
M2-
M2+
M2+
M1+
M1+
M1-
M1-
28
34
24
33
25
26
23
35
7
50
49
48
47
37
5
46
45
44
43
36
19
B1
B2
27
22
∗
∗
M+7V
CD SCOR
CD SENS
CD XLAT
MP3 ACK
MP3 REQ
MP3 XLAT
MP3 DATA
CD CLK
MP3 IREQ
CD XRST
CD XTACN
A+3.3V
D+3.3V
MP3 CLK
CD DATA
AUDIO IN L
AUDIO IN GND
AUDIO IN R
AUDIO IN DET
DGND
HP GND
HP L
HP R
KEY3-2
M2-
M2+
M1-
M1+
SW-COM
SW7
SW6
SW5
SW8
(3/3)
PROTECT
DETECT
Q1607-1609
REGULATOR
Q1610-1613
LOADING MOTOR DRIVE
Q1614-1617
CAM GEAR MOTOR DRIVE
THE ASSEMBLED
BLOCK
SUPPLIED WITH
CD MECHANISM
M-GND
A-GND
D-GND
D-OUT
DECK BLOCK
∗
C1614,1664
10 50V(HPR99XM)
1 50V(HPR90)
COLLECTOR
ANODE
B+ SWITCH
E3/SW3
E2/SW1
E1/SW2
R-CH
L-CH
D-MUTE
E0
(Refer to page
32 on original
service manual)
32 on original
service manual)
(Refer to page
21 on original
service manual)
21 on original
service manual)
(Page 5)
(Page 4)
7
HCD-HPR90/HPR99XM
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
A-1167-363-A MAIN BOARD, COMPLETE (HPR90: US, CND)
A-1167-403-A MAIN BOARD, COMPLETE (HPR99XM)
A-1171-432-A MAIN BOARD, COMPLETE (HPR90: E, E51)
A-1171-456-A MAIN BOARD, COMPLETE (HPR90: AR)
A-1171-473-A MAIN BOARD, COMPLETE (HPR90: SP, AUS)
A-1167-403-A MAIN BOARD, COMPLETE (HPR99XM)
A-1171-432-A MAIN BOARD, COMPLETE (HPR90: E, E51)
A-1171-456-A MAIN BOARD, COMPLETE (HPR90: AR)
A-1171-473-A MAIN BOARD, COMPLETE (HPR90: SP, AUS)
A-1173-202-A MAIN BOARD, COMPLETE (HPR90: MX)
*********************
7-685-646-79 SCREW +BVTP 3X8 TYPE2 N-S
< CAPACITOR >
C1201
1-126-943-11 ELECT
2200uF
20%
25V
C1202
1-100-566-91 CERAMIC CHIP
0.1uF
10%
25V
C1203
1-126-935-11 ELECT
470uF
20%
16V
C1204
1-100-566-91 CERAMIC CHIP
0.1uF
10%
25V
C1205
1-126-935-11 ELECT
470uF
20%
16V
C1206
1-107-826-11 CERAMIC CHIP
0.1uF
10%
16V
C1207
1-126-935-11 ELECT
470uF
20%
16V
C1208
1-107-826-11 CERAMIC CHIP
0.1uF
10%
16V
C1209
1-126-934-11 ELECT
220uF
20%
16V
C1211
1-100-566-91 CERAMIC CHIP
0.1uF
10%
25V
C1212
1-126-935-11 ELECT
470uF
20%
16V
C1213
1-107-726-91 CERAMIC CHIP
0.01uF
10%
16V
C1214
1-126-935-11 ELECT
470uF
20%
16V
C1217
1-107-726-91 CERAMIC CHIP
0.01uF
10%
16V
C1218
1-164-156-11 CERAMIC CHIP
0.1uF
25V
C1301
1-126-916-11 ELECT
1000uF
20%
6.3V
C1310
1-162-919-11 CERAMIC CHIP
22PF
5%
50V
C1311
1-162-919-11 CERAMIC CHIP
22PF
5%
50V
C1312
1-164-156-11 CERAMIC CHIP
0.1uF
25V
C1316
1-164-156-11 CERAMIC CHIP
0.1uF
25V
C1362
1-164-156-11 CERAMIC CHIP
0.1uF
25V
C1401
1-164-156-11 CERAMIC CHIP
0.1uF
25V
C1402
1-164-156-11 CERAMIC CHIP
0.1uF
25V
C1403
1-107-826-11 CERAMIC CHIP
0.1uF
10%
16V
C1404
1-107-826-11 CERAMIC CHIP
0.1uF
10%
16V
C1501
1-164-156-11 CERAMIC CHIP
0.1uF
25V
C1502
1-126-934-11 ELECT
220uF
20%
16V
C1503
1-164-156-11 CERAMIC CHIP
0.1uF
25V
C1504
1-126-934-11 ELECT
220uF
20%
16V
C1505
1-126-964-11 ELECT
10uF
20%
50V
C1506
1-164-156-11 CERAMIC CHIP
0.1uF
25V
(HPR99XM)
C1507
1-126-933-11 ELECT
100uF
20%
16V
(HPR99XM)
C1508
1-126-964-11 ELECT
10uF
20%
50V
C1509
1-126-960-11 ELECT
1uF
20%
50V
C1511
1-126-964-11 ELECT
10uF
20%
50V
C1512
1-126-960-11 ELECT
1uF
20%
50V
C1513
1-126-960-11 ELECT
1uF
20%
50V
C1515
1-126-964-11 ELECT
10uF
20%
50V
C1517
1-126-934-11 ELECT
220uF
20%
16V
C1518
1-130-495-00 MYLAR
0.1uF
5%
50V
C1519
1-130-495-00 MYLAR
0.1uF
5%
50V
C1520
1-130-495-00 MYLAR
0.1uF
5%
50V
C1521
1-130-495-00 MYLAR
0.1uF
5%
50V
C1522
1-130-475-00 MYLAR
0.0022uF
5%
50V
C1523
1-130-475-00 MYLAR
0.0022uF
5%
50V
C1526
1-126-960-11 ELECT
1uF
20%
50V
(HPR99XM)
C1531
1-164-156-11 CERAMIC CHIP
0.1uF
25V
C1532
1-126-933-11 ELECT
100uF
20%
16V
C1550
1-126-934-11 ELECT
220uF
20%
16V
C1552
1-126-933-11 ELECT
100uF
20%
16V
C1555
1-126-964-11 ELECT
10uF
20%
50V
C1558
1-126-964-11 ELECT
10uF
20%
50V
C1559
1-126-960-11 ELECT
1uF
20%
50V
C1561
1-126-964-11 ELECT
10uF
20%
50V
C1562
1-126-960-11 ELECT
1uF
20%
50V
C1563
1-126-960-11 ELECT
1uF
20%
50V
C1565
1-126-964-11 ELECT
10uF
20%
50V
C1567
1-126-934-11 ELECT
220uF
20%
16V
C1576
1-126-960-11 ELECT
1uF
20%
50V
(HPR99XM)
C1603
1-164-156-11 CERAMIC CHIP
0.1uF
25V
C1612
1-164-156-11 CERAMIC CHIP
0.1uF
25V
C1613
1-126-934-11 ELECT
220uF
20%
16V
C1614
1-126-960-11 ELECT
1uF
20%
50V
(HPR90)
C1614
1-126-964-11 ELECT
10uF
20%
50V
(HPR99XM)
C1615
1-164-156-11 CERAMIC CHIP
0.1uF
25V
C1616
1-126-934-11 ELECT
220uF
20%
16V
C1628
1-164-156-11 CERAMIC CHIP
0.1uF
25V
C1629
1-126-934-11 ELECT
220uF
20%
16V
C1635
1-126-934-11 ELECT
220uF
20%
16V
C1636
1-162-964-11 CERAMIC CHIP
0.001uF
10%
50V
3.
ELECTRICAL PARTS LIST
NOTE:
•
Due to standardization, replacements in the
parts list may be different from the parts
specified in the diagrams or the components
used on the set.
parts list may be different from the parts
specified in the diagrams or the components
used on the set.
•
-XX and -X mean standardized parts, so they
may have some difference from the original
one.
may have some difference from the original
one.
•
Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
•
CAPACITORS
uF:
uF:
µ
F
•
COILS
uH:
uH:
µ
H
•
RESISTORS
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable
•
SEMICONDUCTORS
In each case, u:
In each case, u:
µ
, for example:
uA... :
µ
A...
uPA... :
µ
PA...
uPB... :
µ
PB...
uPC... :
µ
PC...
uPD... :
µ
PD...
•
Abbreviation
AR
AR
: Argentina model
AUS : Australian model
CND : Canadian model
E51 : Chilean and Peruvian models
CND : Canadian model
E51 : Chilean and Peruvian models
When indicating parts by reference number,
please include the board.
please include the board.
MX : Mexican model
SP
SP
: Singapore model
MAIN
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
8
HCD-HPR90/HPR99XM
C1664
1-126-960-11 ELECT
1uF
20%
50V
(HPR90)
C1664
1-126-964-11 ELECT
10uF
20%
50V
(HPR99XM)
C1665
1-162-964-11 CERAMIC CHIP
0.001uF
10%
50V
< CONNECTOR >
CN1203 1-815-443-11 PIN, CONNECTOR (PWB) 2P
CN1205 1-819-131-11 PIN, CONNECTOR 3P (HPR99XM)
CN1301 1-784-776-11 CONNECTOR, FFC 15P (HPR99XM)
CN1302 1-784-780-11 CONNECTOR, FFC 19P
CN1305 1-568-830-11 CONNECTOR, FFC 11P
CN1205 1-819-131-11 PIN, CONNECTOR 3P (HPR99XM)
CN1301 1-784-776-11 CONNECTOR, FFC 15P (HPR99XM)
CN1302 1-784-780-11 CONNECTOR, FFC 19P
CN1305 1-568-830-11 CONNECTOR, FFC 11P
CN1306 1-568-828-11 CONNECTOR, FFC 9P
CN1307 1-815-450-11 PIN, CONNECTOR (PWB) 9P
CN1308 1-784-776-11 CONNECTOR, FFC 15P
CN1309 1-779-291-11 CONNECTOR, FFC (LIF (NON-ZIF)) 23P
CN1310 1-568-828-11 CONNECTOR, FFC 9P
CN1307 1-815-450-11 PIN, CONNECTOR (PWB) 9P
CN1308 1-784-776-11 CONNECTOR, FFC 15P
CN1309 1-779-291-11 CONNECTOR, FFC (LIF (NON-ZIF)) 23P
CN1310 1-568-828-11 CONNECTOR, FFC 9P
< DIODE >
D1202
8-719-000-07 DIODE MC2836
D1203
8-719-000-07 DIODE MC2836
D1204
8-719-000-07 DIODE MC2836
D1205
6-501-193-01 DIODE 1SS355WTE-17 (HPR99XM)
D1206
8-719-063-79 DIODE 1N4002B
D1207
8-719-063-79 DIODE 1N4002B
D1208
8-719-063-79 DIODE 1N4002B
D1209
8-719-063-79 DIODE 1N4002B
D1210
8-719-063-79 DIODE 1N4002B
D1211
8-719-063-79 DIODE 1N4002B
D1212
8-719-063-79 DIODE 1N4002B
D1213
8-719-063-79 DIODE 1N4002B
D1228
8-719-063-79 DIODE 1N4002B
D1229
8-719-063-79 DIODE 1N4002B
D1303
8-719-000-07 DIODE MC2836
D1305
6-501-193-01 DIODE 1SS355WTE-17
< EARTH TERMINAL >
EP1201 1-537-771-21 TERMINAL BOARD, GROUND
EP1202 1-537-771-21 TERMINAL BOARD, GROUND
EP1202 1-537-771-21 TERMINAL BOARD, GROUND
< IC/TRANSISTOR >
IC1201
8-759-647-17 IC uPC2912HF
IC1202
8-759-701-59 IC NJM78M09FA
IC1203
6-703-546-01 IC TA7804LS
IC1204
6-707-282-01 IC MM1615ANLE
IC1205
8-759-071-48 IC TA7807S
IC1301
6-807-016-01 IC M30624MGP-A60FPU0 (HPR99XM)
IC1301
6-807-017-01 IC M30622MEP-B10FPU0 (HPR90)
IC1302
6-701-680-01 IC PST3629NR
IC1501
6-701-824-11 IC BD3870FS-E2
IC1502
8-759-656-83 IC NJM4580MD- (TE2)
IC1503
6-551-484-01 TRANSISTOR
RT3C55M-TP-1B
IC1504
6-551-484-01 TRANSISTOR
RT3C55M-TP-1B
IC1505
8-759-430-37 IC MC14052BDTR2 (HPR99XM)
< JUMPER RESISTOR >
JR1001 1-216-864-11 SHORT CHIP
0
JR1002 1-216-864-11 SHORT CHIP
0
JR1003 1-216-864-11 SHORT CHIP
0
JR1004 1-216-864-11 SHORT CHIP
0
JR1005 1-216-864-11 SHORT CHIP
0
JR1006 1-216-864-11 SHORT CHIP
0
JR1007 1-216-864-11 SHORT CHIP
0
JR1008 1-216-864-11 SHORT CHIP
0
JR1009 1-216-864-11 SHORT CHIP
0
JR1010 1-216-864-11 SHORT CHIP
0
JR1011 1-216-864-11 SHORT CHIP
0
JR1012 1-216-864-11 SHORT CHIP
0
JR1013 1-216-864-11 SHORT CHIP
0
JR1014 1-216-864-11 SHORT CHIP
0
JR1501 1-216-864-11 SHORT CHIP
0 (HPR90)
JR1502 1-216-864-11 SHORT CHIP
0 (HPR90)
JR1503 1-216-864-11 SHORT CHIP
0
JR1614 1-216-864-11 SHORT CHIP
0
JR1618 1-216-864-11 SHORT CHIP
0
< TRANSISTOR >
Q1301
8-729-120-28 TRANSISTOR
2SC1623-L5L6
Q1501
8-729-027-43 TRANSISTOR
DTC114EKA-T146
Q1502
8-729-027-23 TRANSISTOR
DTA114EKA-T146
Q1503
8-729-027-43 TRANSISTOR
DTC114EKA-T146
(HPR99XM)
Q1504
8-729-027-43 TRANSISTOR
DTC114EKA-T146
(HPR99XM)
Q1505
8-729-027-43 TRANSISTOR
DTC114EKA-T146
(HPR99XM)
Q1508
8-729-027-43 TRANSISTOR
DTC114EKA-T146
Q1509
8-729-027-23 TRANSISTOR
DTA114EKA-T146
Q1510
8-729-120-28 TRANSISTOR
2SC1623-L5L6
Q1601
8-729-027-43 TRANSISTOR
DTC114EKA-T146
(HPR99XM)
Q1602
8-729-600-22 TRANSISTOR
2SA1235-F (HPR99XM)
Q1606
8-729-600-22 TRANSISTOR
2SA1235-F
Q1607
8-729-040-76 TRANSISTOR
KTA1273-Y-AT
Q1608
8-729-120-28 TRANSISTOR
2SC1623-L5L6
Q1609
8-729-600-22 TRANSISTOR
2SA1235-F
Q1610
8-729-024-43 TRANSISTOR
2SA1365-T112-1EF
Q1611
8-729-047-62 TRANSISTOR
2SC3440-T12-1F
Q1612
8-729-024-43 TRANSISTOR
2SA1365-T112-1EF
Q1613
8-729-047-62 TRANSISTOR
2SC3440-T12-1F
Q1614
8-729-024-43 TRANSISTOR
2SA1365-T112-1EF
Q1615
8-729-047-62 TRANSISTOR
2SC3440-T12-1F
Q1616
8-729-024-43 TRANSISTOR
2SA1365-T112-1EF
Q1617
8-729-047-62 TRANSISTOR
2SC3440-T12-1F
Q1618
8-729-600-22 TRANSISTOR
2SA1235-F
< RESISTOR >
R1201
1-216-845-11 METAL CHIP
100K
5%
1/10W
R1202
1-216-833-11 METAL CHIP
10K
5%
1/10W
R1203
1-216-837-11 METAL CHIP
22K
5%
1/10W
R1301
1-216-809-11 METAL CHIP
100
5%
1/10W
R1302
1-216-809-11 METAL CHIP
100
5%
1/10W
R1303
1-216-809-11 METAL CHIP
100
5%
1/10W
R1304
1-216-809-11 METAL CHIP
100
5%
1/10W
R1305
1-216-809-11 METAL CHIP
100
5%
1/10W
R1306
1-216-809-11 METAL CHIP
100
5%
1/10W
R1307
1-216-809-11 METAL CHIP
100
5%
1/10W
MAIN
Click on the first or last page to see other HCD-HPR90 / HCD-HPR99XM service manuals if exist.