Sony HCD-GZR33D / HCD-LCD7DI / LBT-LCD7DI / MHCGZR33DI Service Manual ▷ View online
HCD-GZR33D/LCD7Di
25
Checking Location: DMB19 board (Side A)
FM Tune Level Check
Procedure:
1. Turn on the set.
2. Input the following signal from signal generator to FM
1. Turn on the set.
2. Input the following signal from signal generator to FM
antenna input directly.
Carrier frequency: A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation
: 75 kHz
Modulation : 1 kHz
ANT input : 35 dB
ANT input : 35 dB
μ (EMF)
Note: Use 75 ohm coaxial cable to connect signal generator and
the set.
You cannot use video cable for checking.
Use signal generator whose output impedance is 75 ohm.
3. Set to FM tuner function and tune A, B and C signals.
4. Confi rm “TUNED” is lit on the display for A, B and C
4. Confi rm “TUNED” is lit on the display for A, B and C
signals.
When the selected station signal is received in good condition,
“TUNED” is displayed.
“TUNED” is displayed.
TUNER SECTION
CN105 pin 3
(GND)
(GND)
CN105 pin 6
(RFMON)
(RFMON)
– DMB19 BOARD (SIDE A) –
IC104
CN105
CN1104
IC101
CN1
103
set
signal
generator
Video Level Check (VIDEO BOARD)
Purpose
This adjustment is made to satisfy the NTSC standard, and if not
adjusted correctly, the brightness will be too large or small.
Purpose
This adjustment is made to satisfy the NTSC standard, and if not
adjusted correctly, the brightness will be too large or small.
Procedure:
1. Connect oscilloscope to VIDEO OUT jack.
2. Load a DVD reference disc playback.
3. Check the video signal level is 1.00±0.07Vp-p.
1. Connect oscilloscope to VIDEO OUT jack.
2. Load a DVD reference disc playback.
3. Check the video signal level is 1.00±0.07Vp-p.
VIDEO SECTION
oscilloscope
set
J1502
VIDEO OUT
VIDEO OUT
75 ȍ
+
–
–
1.00 ± 0.07 Vp-p
(WHITE 100%)
HCD-GZR33D/LCD7Di
26
SECTION 5
DIAGRAMS
• Circuit Boards Location
VOLUME board
FRONT board
LCD CTRL board
DMB19 board
DRIVER board
SW board
SENSOR board
TRANS-SUB board
IP board
VIDEO board
MOTOR (LD) board
MOTOR (TB) board
MIC board
USB-LED board
HP board
LEFT board
RIGHT board
POWER AMP board
MAIN board
TRANS board
HCD-GZR33D/LCD7Di
HCD-GZR33D/LCD7Di
27
27
5-1. BLOCK DIAGRAM – RF/SERVO Section –
DETECTOR
125
3
2
1
4
2
1
4
5
6
6
RFIP
RF_C
RF_B
RF_A
RF_D
RF_B
RF_A
RF_D
RF_E
RF_F
LD01
MDI1
LD02
MSW
MDI2
CD/DVD RF AMP,
FOCUS/TRACKING ERROR AMP,
DVD SYSTEM PROCESSOR,
DIGITAL SERVO PROCESSOR
IC101 (1/2)
OPTICAL PICK-UP
BLOCK
2AXIS
DEVICE
FOCUS/
FOCUS/
TRACKING
COIL
17
15
LIMITSW
118
18
16
36
48
43
37
1
LASER DRIVER
CONTROL
Q102 (2/2)
Q102 (2/2)
MEDIA SWITCH
CONTROL
Q101,103
LASER DRIVER
CONTROL
Q102 (1/2)
Q102 (1/2)
LASER
DIODE
(FOR CD)
LASER
DIODE
(FOR DVD)
FOCUS COIL
DRIVE
42
41
41
BUFFER
35
3
34
4
TRACKING COIL
DRIVE
32
21
25
25
20
24
24
13
128
116
22
94
94
FOCUS/TRACKING COIL DRIVER,
SPINDLE/SLED MOTOR DRIVER
IC201
27
28
28
SPINDLE MOTOR
DRIVE
M
M
SPINDLE
46
47
47
FMO
FOO
FOO
DMO
TRO
TRO
VREFO
SPFG
127 IOPMON
FOO
RF
A
B
C
D
D
F
E
CD LD
PD
LIMIT
VR650
VR780
MSW
DVD LD
FCS+
FCS–
FCS–
TRK+
TRK–
TRK–
SP+
SP–
SP–
SL+
SL–
VREFO
VREFO
V2O
12
VC
VCC
30
29
29
SLED MOTOR
DRIVE
M
M
23
BUFFER
19
20
22
21
20
22
21
40
45
SYSTEM
CONTROL
IC501 (1/6)
40
IFSCK
I-MTK-CLK
46
91
TX
TXD
RF MON
CN105
FOR
LINE-JIG
6
1
2
4
5
89
RX
RXD
+3.3V
DVDD3.3V
V2RFO
IFCS
I-DVD-XIFS
42
PRST
O-MTK-MTRST
41
41
88
87
35
43
IFSDO
I-MTK-DATA
45
IFSDI
IFBSY
O-MTK-IFBSY
43
O-MTK-DATA
44
TRO
FMO
FOO
FOO
DMO
TRO
TRO
10
13
13
FMO
DMO
MUTE123
MUTE4
TSDM
MUTE4
TSDM
SLED
: DVD (AUDIO)
: DVD (RF)
: DVD (DIGITAL)
SLJQDO PDWK
HCD-GZR33D/LCD7Di
HCD-GZR33D/LCD7Di
28
28
DVD SYSTEM PROCESSOR
IC101 (2/2)
EEPROM
IC103
64M SDRAM
IC104
A
MAIN
SECTION
C
AUDIO
SECTION
B
MAIN
SECTION
SF-ROM
IC102
AVDD3.3V
VDD1.8V
ASDAT0
ADIN
SDPIF
O-USB-POWER
I-USB-OVER-CURRENT
6 5
SCL
SDA
22-26,
29-35
45-49,51-53,56-59,61-64
67,69-74,81-83,85,86
RCLK
38
RCLK
RD0 – RD15
RA0 – RA11
RA0 – RA11
RD0 – RD15
RW
E
16
RW
E
RAS
18
RAS
CAS
17
CAS
DQM0
15
DQM0
DQM1
39
DQM1
SCL
SDA
BA0
20
BA0
BA1
21
66
75 77 76 55 65
78 80
BA1
2,4,5,7,8,10,11,13,42,44,45,47,48,50,51,53
L IN
A/D CONVERTER
IC4601
D/A CONVERTER
IC4602
13
VINL
CR/R
SY/Y/G
SC/CB/B
CVBS
ACLK
ABCK
ALRCK
+5V (iPod)
27
99
104
102
103
102
103
106
114
115
119
115
119
120
28
93
10
9
8
8
DOUT
7
BCK
LRCK
LRCK
6 SCKI
CVBUS OUT
CR
Y
CB
CR
Y
CB
1 SDATA
4 MCLK
2 SCLK
3 LRCK
4 MCLK
2 SCLK
3 LRCK
2
14
R-CH
R-CH
8
LOUT
5
OPTICAL
TRANSMITTER
DVD
DIGITAL OUT
OPTICAL
VINR
AOUT-L
AOUT-R
IC1502
7
33 34
26
WP
EEWP
5 6
SI
SCK
SF_DI
SF_CK
2
38 39
37
SO
SF_DO
1
36
CS
SF_CS
XTALI
XTALO
9
USB DP
USB DM
1
2
7
5
3
CN700
IC931
+5V
REG
IC971 (1/2)
23
73
SYSTEM CONTROL
IC501 (2/6)
OVER-CURRENT
DETECT
(USB)
2
1
USB DP
USB DM
USB DM
USB+5V
4
1
1
5
IC105
+3.3V REG
+3.3V REG
+1.8V REG
VDD3.3V
DVDD5V
1
8
IC111
4
5
IC107
RF+3.3V
UNREG10V
X101
27MHz
POWER
CONTROL
Q941,942
SiJQDO PDWK
: VIDEO
: COMPONENT VIDEO
: AUDIO
: DVD (RF)
: DVD (AUDIO)
: USB
: DVD (DIGITAL)
5-2. BLOCK DIAGRAM – VIDEO Section –
(Page 30)
(Page 29)
(Page 29)
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