Sony CMT-EH25 / CMT-EH26 / HCD-EH25 / HCD-EH26 Service Manual ▷ View online
HCD-EH25/EH26
HCD-EH25/EH26
21
21
• See page 23 for Waveforms. • See page 27 for IC Block Diagrams.
7-9. SCHEMATIC DIAGRAM - MAIN Board (1/3) -
AM VT VOLTAGE
L852
L851
AM TRACKING
L806
FM DETECTOR
L804
FM TRACKING
FM VT
VOLTAGE
L805
R843
Q801
R803
R807
R808
R809
R811
R812
R813
R814
R815
R818
R819
R820
R821
R823
R824
R825
R826
R827
R831
R834
R835
R839
R841
R842
R844
R845
R846
R847
R850
R851
Q803
D851
D802
R863
C801
C802
C803
C806
C809
C810
C812
C814
C816
C817
C818
C819
C820
C822
C823
C824
C825
C826
C829 C830
C833
C839
C841
C851
C853
C855
JR803
D812
D813
D815
R840
C831
C800
R804
C804
R801
JR802
C873
C811
C832
R822
R848
R833
R836
C835
C836
R837
R838
Q802
R866
R876
R868
R872
Q862
R829
R830
C838
X801
R816
C821
R849
D803
R802
R806
C815
C834
JW837
R861
C864
Q861
R870
R869
C863
C867
R875
R874
R864
R871
R857
R856
C869
R867
R873
C868
C852
R805
C856
C854
R853
C828
C827
IC861
JW805
JR801
L805
JW821
L851
C843
C807
JR861
X861
C862
C866
C861
C865
R859
R860
JW402
JW403
C848
C847
L852
L806
L803
CF803
CF801
R828
C813
CF802
R810
CF802
R817
IC801
CNP802
C840
BPF801
L804
470k
2SC3052F
10
100k
10k
1k
4.7k
470
10k
100
4.7k
47k
47k
10k
220
100
2.2k
470
100
100
220
22k
4.7k
100
100
47k
10
22
2.2k
22
2.2k
22k
2SC5477
SVC347A
SVC230
22k
100
16V
0.1
0.01
0.001
0.1
0.22
0.1
0.1
0.22
0.1
0
0.001
0.001
470p
18p
18p
1
100p
0.01
0.01
0.47
0.1
22
50V
0.047
0.022
470p
0
MC2837
MC2837
MC2837
22k
0.47
0.1
0
0.1
2.2k
0
2p
0.1
0.47
2.2k
1k
10k
10k
0.22
0.22
1k
1k
2SC3052F
10k
47k
10k
220
2SC3052F
100k
47k
0.1
75KHz
10k
0.047
22k
SVC230
10
0
100p
220
10V
10V
10k
470p
2SC3052F
470k
10k
22
50
470p
100k
100k
10k
220k
47k
47k
47p
10k
2.2k
68p
10p
100k
5p
10p
100k
100p
100p
PT2579SN
(GND)
0
(VT)
220p
0.0022
0
4.332MHz
0.1
470p
0.1
22
50V
220
10V
10V
1M
1000P
10k
LV23003VA
3P
0.47
FM RF
(1/3)
REGULATOR
REGULATOR
REGULATOR
DET AMP
RDS RECODER
RDS-CLK
TU-ANSD
TU-DO
TU-CLK
TU-DI
TU-CE
VM9V
TU-L
TU-GND
TU-R
EMC-GND
RDS-DO
1K
22K
R859, 860
(EH25: AEP, RU, UK/EH26)
(EH25: E2, E51, MX, SP, KR, IND, AUS)
(EH25: E2, E51, MX, SP, KR, IND, AUS)
(TUNER OUT R-ch)
(TUNER OUT L-ch)
FM DET
AM IF
FM MIX AMP
(EH25: AEP, RU, UK/EH26)
(EH25: E2, E51, MX, SP, KR, IND, AUS)
22
47
(EH25: AEP, RU, UK/EH26)
(EH25: E2, E51, MX, SP, KR, IND, AUS)
FM/AM TUNER,
FM/AM PLL
(EH25: AEP, UK/EH26)
(EH25: E2, E51, MX, SP, KR, IND, AUS)
FM/AM
ANTENNA
AM RF
AM OSC
AM OSC
2200p
2200p
JR804
0
EH25: E2, E51, MX,
SP, KR, IND, AUS
(Page 22)
Ver. 1.6
HCD-EH25/EH26
HCD-EH25/EH26
22
22
• See page 23 for Waveforms. • See page 27 for IC Block Diagrams.
7-10. SCHEMATIC DIAGRAM - MAIN Board (2/3) -
R501
R502
R527
R528
R564
R565
R507
R508
R521
R529
R530
R424
R425
R406
R402
R109
R535
R536
R101
R108
R107
R119
R120
R303
R427
R428
R305
R433
R434
R365
R340
R560
R517
R354
R353
R351
R355
R356
R371
R372
R373
R374
R375
R376
R377
R378
R379
R380
R381
R382
R383
R384
R308
R307
R302
R519
R520
R111
R112
R125
R124
R106
R105
R103
R104
R104
82k (EH25: E2, E51)
100k (EXCEPT EH25: E2, E51)
100k (EXCEPT EH25: E2, E51)
R110
R121
R123
R181
R304
R306
R352
R541
R543
IC401
C109
C110
C111
C114
C115
C118
C121
C141
C142
C194
C196
C301
C303
C304
C305
C306
C310
C311
C312
C381
C382
C401
C402
C403
C404
C405
C406
C408
C409
C410
C412
C413
C415
C416
C421
C431
C432
C433
C501
C504
C505
C506
C507
C508
C509
C510
C515
C518
C519
C522
C523
C525
C526
C529
C531
C532
C533
C534
C535
C543
C544
C561
C562
C564
C565
D106
D131
D372
Q102
Q103
Q121
Q122
Q123
Q352
Q372
Q507
Q371
R151
R152
R176
D371
Q101
R441
R442
R523
R524
R504
R503
R513
R514
R403
R411
C513
C514
Q351
D113
D116
D117
D118
C122
C307
C308
C102
C101
C113
R153
R155
PIN101
(NC)
R182
R154
R156
R544
IC301
C371
R339
C309
R301
C302
C315
JW181
C183
C181
JW182
C184
C182
R118
R116
R117
R115
JW166
D107
D108
D110
D109
D111
C155
C156
R126
R127
R128
R129
R131
R130
R102
JW169
JW170
CNA102
R175
R405
R423
R426
C437
R429
R430 C438
R439
R440
C434
R522
R561
R532
C528
C567
R542
JW107
R510
R518
C503
R509
C502
C407
R412
R410
CNP501
CNP502
CN105
J105
J102
C105
C105
R407
L103
JW137
C524
L501
CN106
L104
10
PH
J101
R531
C527
FB101
JW148
SW501
100
100
4.7k
4.7k
4.7
4.7
2.2k
2.2k
22k
2.2k
2.2k
4.7k
4.7k
1k
100
470
220
220
10k
100
470
2.2k
2.2k
2.2k
100k
100k
4.7k
22k
22k
2.2k
100
1k
100k
10k
10k
10k
10k
22k
1
1
1
1
1
1
1
1
1
1
10k
10k
10k
1k
22k
22k
22k
47k
47k
470k
470k
4.7k
100
22k (EH25: AEP, RU, UK, KR/EH26)
20k (EH25: MX)
24k (EH25: E2, E51, SP, IND, AUS)
100k
47k
R110
150k (EH25: E2, E51)
100k (EXCEPT EH25: E2, E51)
220k
470k
10
2.2k
4.7k
2.2k
22k
4.7k
BD3881FV
0.01
0.22
0.1
0.1
0.1
100
16V
16V
0.47
0.01
0.01
0.1
0.1
0.0022
4.7
50V
50V
100
16V
16V
1
50V
1
50V
0.001
470p
470p
0.001
0.01
0.1
50V
100
16V
16V
0.1
0.22
0.1
50V
0.22
0.0047
0.1
0.1
100
16V
100
16V
0.1
0.1
0.1
1
50V
1
50V
470p
47p
470p
0.047
0.047
0.01
0.01
33
16V
33
16V
10p
0.1
0.1
100p
0.01
0.01
0.01
100p
0.001
0.001
0.1
0.1
0.1
0.001
0.001
0.0022
0.0022
0.01
1
UDZW-TE17-
D112
1N4002-B5
D114
1N4002-B5
MC2836-T11
MC2838-T11
2SC3052F-T
2SC3052F-T
2SC3052F-T
2SC3052F-T
2SC3052F-T
2SC3052F-T
2SC3052F-T
2SC3052F-T
ISA1235
AC1TP-1EF
10k
10k
100k
MC2838-T11
2SB1565E
82k
82k
3.3k
3.3k
15k
15k
150
150
1.2k
1k
0.0015
0.0015
2SJ599
1N4002-B5
1N4002-B5
1N4002-B5
1N4002-B5
220
35V
1000
16V
1000
16V
0.1
3300
35V
2200
35V
4.7k
4.7k
10
4.7k
4.7k
3.9k
LA4631-E
0.1
100
0.001
22k
0.001
0.001
0.1
0.1
0.1
0.1
220
220
220
220
RL202-B322-1
RL202-B322-1
RL202-B322-1
RL202-B322-1
1N4002-B5
0.1
0.1
47k
47k
220
220
220
220
100
4P
100k
0
4.7k
4.7k
470p
4.7k
4.7k 470p
4.7k
4.7k
470p
22k
22k
15k
0.001
0.0047
15k
390k
100k
470p
390k
47p
0.0047
220
100k
4P
3P
19P
100
0.01
15k
0.001
(GND)
FUSD
FUSD
AMP_ON
P_MONI
P_ON
TUCK
TUAS
USB_R
USB_L
AU_SW
CD_R
AU_SW
USB_R
TPST
AMP_ON
TPST
TUDO
TUCE
TUDI
RDSD
CD_L
USB_L
CD_R
CD_L
TUCE
TUCK
TUDI
TUDO
TUAS
RDSD
RDSC
RDSC
P_MONI
P_ON
S
TU_DO
TU_ANSD
TU_CK
TU_DI
TU_CE
RDS_SD
RDS_SC
DGND
P-MONITER
TP_STATE
FUNC_SDA
AMP_ON
AGND
CD_R
CD_L
POWER_ON
MGND
MGND
VSTBY
USB_L
USB_R
AUDIO_SW
AGND
VM2-7V
VM2-7V
USB_REG_ON
AUX-L
AUX-R
TU-L
TU-R
CD-R
CD-L
GND
VMAC
VMAC
VM9C
TU-L
TU-GND
TU-R
RDS-CLK
RDS-DO
TU-ANSD
TU-CLK
TU-CE
EMC-GND
TU-DO
TU-DI
L
R
SPEAKER
AU-L
AU-R
USB_L
USB_R
CD_L
CD_R
AU_SW
P0WER AMP
AC DETECT
Q121, 122
DC DETECT
BIAS OSC
REC
PB
(REC/PB)
AUDIO IN
(REC/PB)
R-CH
L-CH
MECHANISM
TAPE
DECK
INPUT
SELECTOR,
ELECTRICAL
VOLUME
PHONES
(2/3)
A-GND
+9V
B+ SWITCH
Q351, 352
0.1 (EH25: AEP, UK, RU/EH26)
0.47 (EH25: KR)
USB_EN
+9V REGULATOR
Q101 – 103
Q371, 372
AC DETECT
OSC
(EH25: RU, E2, E51, MX, SP, KR, IND, AUS)
5P
7P (EH25: AEP, UK/EH26)
7P (EH25: AEP, UK/EH26)
(MF-EH10)
(EH25: AEP, UK/EH26)
NC
NC
NC
TPR501
-2
-1
PIN102
(NC)
(EH25: AEP, UK, RU, KR/EH26)
(EH25: E2, E51, SP, IND, AUS)
(EH25: AEP, RU, UK, MX, KR/EH26)
(Page 21)
(Page 23)
(Page 26)
(Page 25)
(Page 23)
(Page 25)
(Page 23)
Ver. 1.6
HCD-EH25/EH26
HCD-EH25/EH26
23
23
• See page 27 for IC Block Diagrams.
7-11. SCHEMATIC DIAGRAM - MAIN Board (3/3) -
R452
R453
C457
C458
C455
R451
C456
C452
C451
C453
C454
IC451
IC452
10k
100
100
16V
0.1
0.1
10k
0.1
1
50V
1
50V
1
50V
1
50V
NJM2521M
NJM2521M
A-GND
+9V
USB-L
USB-R
CD-L
CD-R
AU-SW
AU-L
AU-R
(3/3)
SWITCH
AUDIO SELECT
SWITCH
AUDIO SELECT
GND
VOUT
V+
VIN3
VIN1
SW1
VIN2
SW2
GND
VOUT
V+
VIN3
VIN1
SW1
VIN2
SW2
(Page 22)
(Page 22)
(Page 22)
• Waveforms
– CD Board –
IC101 JB (RFi)
(CD play mode)
(CD play mode)
200 mV/DIV, 500 ns/DIV
0.5 to 1.3 Vp-p
IC101 XG (XO)
(CD play mode)
(CD play mode)
1 V/DIV, 20 ns/DIV
59.1 ns
14.6
μs
3.3 Vp-p
RG
Q507 (Collector)
(Tape REC mode)
(Tape REC mode)
5 V/DIV, 10
μs/DIV
9.8 Vp-p
RB
IC801 X (XOUT)
1 V/DIV, 10
μs/DIV
13.4
μs
1.2 Vp-p
RT
IC861 RG (XOUT)
2 V/DIV, 100 ns/DIV
230 ns
5 Vp-p
FB
IC701 RG (X3)
1 V/DIV, 10
μs/DIV
30.4
μs
3 Vp-p
FT
IC701 PT (X1)
2 V/DIV, 100 ns/DIV
181 ns
3.2 Vp-p
RE
Q507 (Base)
2 V/DIV, 10
μs/DIV
14.6
μs
4.3 Vp-p
XB
IC101 SB (XOUT_PLL)
1 V/DIV, 20 ns/DIV
59 ns
2.1 Vp-p
– MAIN Board –
– PANEL Board –
– USB Board –
HCD-EH25/EH26
HCD-EH25/EH26
24
24
•
: Uses unleaded solder.
• See page 15 for Circuit Boards Location.
7-12. PRINTED WIRING BOARD - PANEL Board -
JW763
JW765
JW761
JW724
JW703
JW714
JW790
JW730
JW728
JW720
JW741
JW731
JW715
JW760
JW723
JW779
JW708
JW707
JW719
JW729
JW772
JW738
JW744
JW749
JW755
JW756
JW733
JW762
JW726
JW771
JW753
JW754
JW736
JW732
JW747
JW739
JW735
JW725
JW780
JW781
JW783
JW711
JW700
JW721
CNA750
JW757
JW750
JW713
JW712
JW706
JW751
JW722
JW717
JW752
JW775
JW727
JW704
JW782
JW716
JW740
JW710
JW742
JW701
JW776
JW745
JW746
JW767
JW748
JW737
JW773
JW774
JW709
JW764
JW718
JW759
CNP703
CNP706
SW700
LED701
SW709
SW711
SW703
SW703
SW710
SW708
SW707
SW701
SW702
SW706
SW704
X702
LCD702
X701
LED702
C704
SW705
IC703
CNP701
C725
D704
D705
JR775
JR714
JR709
JR710
JR750
JR751
JR754
JR760
JR762
JR743
JR747
JR748
JR749
JR788
JR789
JR706
JR707
JR722
JR723
JR713
R782
R783
JR719
JR763
JR715
JR725
JR726
JR752
IC706
R791
R790
R789
R781
R751
R741
R735
R722
R720
IC709
C745
C744
C740
C739
R798
R799
C738
C743
C742
C741
R744
Q707
R742
R766
R714
R730
R702
R740
Q714
R792
C731
R762
R746
C712
R759
R753
R743
R723
C716
R757
R756
R705
R709
C719
C722
R729
R704
C729
C723
R736
R727
R734
R747
R748
R712
R793
JR702
CNP707
R788
R774
C707
R726
JR705
R711
R724
R779
C711
L701
R719
R718
C701
R761
R785
R760
R731
R763
R775
R764
R745
R771
R768
R713
R787
IC701
R732
R708
L702
C727
C728
Q706
R701
Q712
R777
Q702
Q705
Q703
D701
R784
R772
R710
C710
C724
R750
R770
R765
R749
R716
R707
R715
R767
R703
Q701
R728
D702
R706
R738
R739
R725
R754
R733
C726
C733
C706
R755
C732
Q704
R721
C702
C721
C748
C750
C751
R794
R795
R796
R797
Q708
Q709
Q710
D703
IC707
Q713
C753
Q711
JR724
E
E
E
18
19
1
2
E
E
E
E
E
E
E
E
E
E
E
1-877-092-
12
(12)
F
USB BOARD
CN101
A
CD BOARD
CN201
D
MAIN
BOARD
CN105
C
MAIN
BOARD
CN106
1
51
100
30
31
50
80
81
1
3
4
4
3
3
K
A
A
1
2
2
5
1
3
4
5
PANEL BOARD
LIQUID CRYSTAL DISPLAY
1
2
1
3
36
SW750
LCD BACK
LIGHT
21
20
1
2
(EH25: AEP, UK/EH26)
A
C
B
(EH25: AEP, UK/EH26)
CD LID
OPEN/CLOSE
DETECT
1
A
K
K
(EH25: RU, E2, E51, MX, SP, KR, IND, AUS)
(EH25: AEP, RU, UK, E2, E51, MX, AUS/EH26)
(EH25: AEP, UK/EH26)
–
+
CD
u
TUNER/
BAND
DSGX
FUNCTION
x
VOLUME
SW700
ROTARY ENCODER
TUNING –
M L
TUNING +
M L
USB
u
STANDBY
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
9
SW701 – 711
(Page 16)
(Page 18)
(Page 20)
(Page 20)
Ref. No. Location
• Semiconductor
Location
D701
B-7
D702
C-6
D703
G-6
D704
F-7
D705
F-7
IC701
C-4
IC703
B-2
IC706
F-7
IC707
G-7
IC709
G-6
LED701 B-2
LED702 D-8
LED702 D-8
Q701
B-7
Q702
C-7
Q703
C-7
Q704
B-7
Q705
B-7
Q706
C-7
Q707
B-2
Q708
F-6
Q709
G-5
Q710
F-6
Q711
D-7
Q712
D-8
Q713
C-7
Q714
C-6
Ver. 1.6
Note: In this set of AEP model, C748, C753, D703, IC709 and Q710
have been deleted in the midway of production.
Click on the first or last page to see other CMT-EH25 / CMT-EH26 / HCD-EH25 / HCD-EH26 service manuals if exist.