Sony DVE-45 Service manual
D-VE45
SERVICE MANUAL
Ver 1.0 2001.07
SPECIFICATIONS
System
Compact disc digital audio/video system
Laser diode properties
Material: GaAlAs
Wavelength: λ = 780 nm
Emission duration: Continuous
Laser output: Less than 44.6 µW (This output
is the value measured at a distance of 200 mm
from the objective lens surface on the optical
pick-up block with 7 mm aperture.)
Error correction
Sony Super Strategy Cross Interleave Reed
Solomon Code
D-A conversion
1-bit quartz time-axis control
Channel number
2 channels
Frequency response
20 - 20,000 Hz +1/–2 dB
(measured by JEITA CP-307)
Output (at 4.5 V input level)
Audio output
Output level 0.7 V rms at 47 kilohms
Recommended load impedance over 10
kilohms
Video output
Output level 1 Vp-p at 75 ohms
Recommended load impedance 75 ohms
Headphones (stereo minijack)
Approx. 5 mW + Approx. 5 mW at 16 ohms
Power requirements
For the area code of the model you purchased, check
the upper left side of the bar code on the package.
• Two LR6 (size AA) batteries: 3 V DC
• AC power adaptor (DC IN 4.5 V jack):
E13 model: 220 - 230 V, 50/60 Hz
CH model: 220 V, 50 Hz
HK model: 220 V, 50/60 Hz
Battery life * (approx. hours)
(When you use the VIDEO CD player on a flat and
stable surface.)
Playing time varies depending on how the CD
player is used.
VIDEO CD Audio CD
Two Sony alkaline 2 30 24
batteries LR6SG
* Measured value by the standard of JEITA (Japan
Electronics and Information Technology
Industries Association).
E Model
Chinese Model
Model Name Using Similar Mechanism D-E220/E225/E226CK
CD Mechanism Type CDM-3123EBA
Optical Pick-up Name DAX-23E
Operating temperature
5°C - 35°C (41°F - 95°F)
Dimensions (w/h/d)
(excluding projecting parts and controls)
Approx. 152.4 × 25.4 × 152.4 mm
Mass (excluding accessories)
Approx. 226 g
Design and specifications are subject to change
without notice.
Supplied accessories
AC power adaptor AC-E455F (1) (E13, EA)
AC power adaptor AC-E455 (1) (CH, HK)
ESP ESP
ON OFF
AV cable (1)
Wireless remote commander RMT-DV11 (1)
Earphones MDR-E805LP (1)
Stand (1)
AC plug adaptor (1) (EA)
• Abbreviation
CH : Chinese model
EA : Saudi Arabia model
E13 : AC 220 - 230V area in E model
HK : Hong Kong model
9-873-215-01
2001G0400-1
© 2001.7
PORTABLE VIDEO CD PLAYER
Sony Corporation
Personal Audio Company
Shinagawa Tec Service Manual Production Group
1
D-VE45
TABLE OF CONTENTS
1. SERVICE NOTE................................................................. 3
2. GENERAL
Getting Started ......................................................................... 4
3. DISASSEMBLY
3-1. Lid Sub Assy, Upper ........................................................... 6
3-2. Cabinet (Front) Assy ........................................................... 6
3-3. Main Board, MD Assy ........................................................ 7
3-4. Optical Pick-up, Motor ....................................................... 7
4. ELECTRICAL ADJUSTMENTS
4-1. Precautions for Check ......................................................... 8
4-2. Focus Bias Check ................................................................ 8
5. DIAGRAMS
5-1. IC Pin Descriptions ............................................................. 9
5-2. Block Diagram –CD Section– ........................................... 15
5-3. Block Diagram –Video Section–....................................... 16
5-4. Block Diagram –Audio Section– ...................................... 17
5-5. Block Diagram –Power Supply Section– .......................... 18
5-6. Printed Wiring Boards –Main Section– ............................ 20
5-7. Schematic Diagram –Main Section (1/3)– ........................ 22
5-8. Schematic Diagram –Main Section (2/3)– ........................ 23
5-9. Schematic Diagram –Main Section (3/3)– ........................ 24
5-10. IC Block Diagrams ............................................................ 25
6. EXPLODED VIEWS
6-1. Cabinet (Front) Section ..................................................... 28
6-2. Cabinet (Rear) Section ...................................................... 29
6-3. CD Mechanism Deck Section (CDM-3123EBA) ............. 30
6-4. Stand (Set) Section ............................................................ 31
7. ELECTRICAL PARTS LIST ......................................... 32
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270°C during
repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
Notes on Chip Component Replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
2
SECTION 1
SERVICE NOTE
D-VE45
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the potential difference generated by
the charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
Precautions for Checking Emission of Laser Diode
Laser light of the equipment is focused by the object lens in the
optical pick-up so that the light focuses on the reflection surface
of the disc. Therefore, be sure to keep your eyes more then 30 cm
apart from the object lens when you check the emission of laser
diode.
Before Replacing the Optical Pick-Up Block
Please be sure to check throughly the parameters as par the “Optical Pick-Up Block Checking Procedures” (Part No.: 9-960-027-
11) issued separately before replacing the optical pick-up block.
Note and specifications required to check are given below.
• FOK output : IC601 eg pin
When checking FOK, remove the lead wire to disc motor.
• RF signal P-to-P value : 0.6 ± 0.2 Vp-p
• The repairing grating holder is impossible.
S801
detection lever
detection lever
main board
Fig. 1
Laser Diode Checking Methods
During normal operation of the equipment, emission of the laser
diode is prohibited unless the upper lid is closed while turning ON
the S801. (push switch type)
The following two checking methods for the laser diode are
operable.
• Method:
Emission of the laser diode is visually checked.
1. Open the upper lid.
2. With a disc not set, turn on the S801 with a screwdriver having a
thin tip as shown in Fig.1.
or TAP802 is shorted as shown in Fig.2.
Note: Do not push the detection lever strongly, or it may be bent
or damaged.
3. Press the N > button.
4. Observing the objective lens, check that the laser diode emits
light.
When the laser diode does not emit light, automatic power
control circuit or optical pick-up is faulty.
In this operation, the objective lens will move up and down 5
times along with inward motion for the focus search.
– MAIN BOARD – (SIDE A)
TAP802
– MAIN BOARD – (SIDE B)
Fig. 2
S801
(OPEN)
S801
3
D-VE45
SECTION 2
GENERAL
This section is extracted
from instruction manual.
4
D-VE45
5
D-VE45
y
SECTION 3
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
3-1. LID SUB ASSY, UPPER
2
lid sub assy, upper
1
claws
3-2. CABINET (FRONT) ASSY
1
screws, tapping
2
screws (B2), tapping, P3
cabinet (rear) assy
3
screws (B2), tapping, P3
4
screws (B2), tapping, P3
5
cabinet (front) ass
claw
claws
6
3-3. MAIN BOARD, MD ASSY
1
CN501
6
MAIN board
4
MD assy
5
2
CN502
S803
3
CN503
t
D-VE45
3-4. OPTICAL PICK-UP, MOTOR
5
motor assy, sled (M501)
6
gear (B)
4
cover, gear
3
B 1.7x5
1
B 1.7x5
2
motor assy, turntable (M502)
chassis
qd
shaft, standard
qa
screw (feed) assy
8
retainer, shaf
7
P 1.4x3.5
qs
pick-up block, optical
9
B 1.4x2.3
q;
rack
7
D-VE45
SECTION 4
ELECTRICAL ADJUSTMENT
CD section adjustments are done automatically in this set.
In case of operation check, confirm that focus bias.
4-1. PRECAUTIONS FOR CHECK
1. Perform check in the order given.
2. Use YEDS-18 disc (Part No.: 3-702-101-01) unless otherwise
indicated.
3. Power supply voltage requirement: DC 4.5 V in DC IN jack.
(J401)
VOLUME button : Minimum
HOLD switch : OFF
4-2. FOCUS BIAS CHECK
Condition:
• Hold the set in horizontal state.
Connection:
oscilloscope
(AC range)
MAIN board
TP629 (RF)
Procedure:
1. Connect the oscilloscope between TP629 (RF)
and GND on MAIN board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the N > button.
4. Confirm that the oscilloscope waveform is as shown in the
figure below. (eye pattern)
A good eye pattern means that the diamond shape ( ) in the
center of the waveform can be clearly distinguished.
5. Stop revolving of the disc motor by pressing the x button.
2 kΩ
Test Points:
– MAIN BOARD – (SIDE B)
J302
TP629 (RF)
• RF signal reference waveform (eye pattern)
VOLT/DIV : 50 mV (10 : 1 probe in use)
TIME/DIV : 500 nS
RF level :
0.6
±
0.2 Vp-p
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.
8
SECTION 5
DIAGRAMS
5-1. IC PIN DESCRIPTIONS
• IC801 TMP88CM22AF-MIRXV-2 (SYSTEM CONTROLLER)
Pin No. Pin Name I/O Pin Description
1 VSS — Ground
2 RMC_I I Infrared remote control signal input
3 FOK_I I Focus OK signal input from CXD3028R (IC601).
4 AGCPWM_O O AGC control pulse output
5 VCDON_O O Control signal output for video block power.
6 XV_RECV_O O Ready signal output to TMP87CM41U (IC803).
7 AMUTE_O O Analog audio muting ON/OFF signal control signal output (H: Mute ON)
8 I_LIMIT_O O Limit current circuitry control signal output
9 XRST_O O Reset signal output to CXD3028R (IC601). (L: Reset)
10 SCK_O O Serial data transfer clock signal output to CXD3028R (IC601).
11 (SENS) MSDTI_I I Serial data input from CXD3028R (IC601).
12 MSDTO_O O Serial data output to CXD3028R (IC601).
13 WAKEUP_O O WAKE-UP control signal output (for system standby reset)
14 AD_SEL I Plug-in detection signal input of AUDIO/VIDEO OUT jack.
15 AD_CHGMNT I Not used. (Fixed at “L” in this set)
16 COLOR_BAR_DET I Color-bar detection signal input
17 AD_BATMNT I Battery voltage detection input
18 AD_KEY I Key input from switches (A/D input).
19 AD_RMKEY I Not used. (Fixed at “L” in this set)
20 AD_DCINMNT I DC input voltage detection input (A/D input) DC input jack use/no-use detect input
21 WP_OPEN (SLVCD) I CD door open/close detection input
22 VREFL I Reference voltage (0 V) input for A/D converter.
23 VREFH I Reference voltage (+2 V) input for A/D converter.
24 VDD — Power supply pin (+2 V)
25 SCOR_I I Sub code sync detection input from CXD3028R (IC601).
26 GRSCOR_I I GRSCOR signal input from CXD3028R (IC601).
27 MIR_I I Not used. (Fixed at “H” in this set)
28 BEEP_O O Beep sound output to AN17880A (IC351).
29 XV_SEND_O O Request signal output to TMP87CM41U (IC803).
30 RMSCK_O O Communication clock to TMP87CM41U (IC803).
31 RMDATI_I I Communication data bus input from TMP87CM41U (IC803).
32 RMDATO_O O Communication data bus output to TMP87CM41U (IC803).
33 XV_REQ_I I Request signal input from TMP87CM41U (IC803).
34 RESERVE I Not used. (Open)
35 RESERVE I Not used. (Open)
36 COMPON_I I ESP switch input (L: OFF, H: ON)
37 (NTSC/PAL) I SYSTEM SELECT (NTSC/PAL) select input (L: NTSC, H: PAL)
38 RESERVE I Not used. (Open)
39 HOLD_I I HOLD switch input (H: HOLD on, L: HOLD off)
40 COLOR_BAR_SW I Color-bar recovery circuit. (Fixed at “H” in this set)
41 RESERVE I Not used. (Open)
42 XDE_O O Optical pick-up VCC control signal output (L: on)
43 XLAT_O O Serial data latch pulse output to CXD3028R (IC601). (for ESP)
44 XSOE_O O Output enable signal output to CXD3028R (IC601). (for ESP)
45 RESERVE O Not used. (Open)
46 XPOWLT_O O Latch output to TB2125F (IC401).
47 RESERVE I Not used. (Open)
48 XAPC_OFF_O O Not used. (Open)
49 VRST_O O Reset signal output to TMP87CM41U (IC803).
50 – 57 SEG14 – 7 O LCD drive segment output (Not used in this set)
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D-VE45
Pin No. Pin Name I/O Pin Description
58 – 64 SEG6 – 0 O LCD drive segment output
65 – 68 COM3 – 0 O LCD drive common output
69 – 71 V3 – 1 O LCD drive bias output
72, 73 C1, 0 O Capacitor connected terminal of LCD driver for voltage-up.
74 TEST I Test terminal for IC. (Fixed at “L” in this set)
75 TEST I Test terminal for IC. (Fixed at “L” in this set)
76 PWRSW_O O HEADPHONE AMP ON/OFF control signal output (L: ON)
77 RESERVE I Not used. (Open)
78 RESET_I I System reset signal input from TB2125F (IC401). (L: Reset)
79 XIN_I I Oscillation input
80 XOUT O Oscillation output (Not used in this set)
10
• IC803 TMP87CM41U-3E64 (VIDEO ENCODER, VIDEO CONTROLLER)
Pin No. Pin Name I/O Pin Description
1 TEST NTSC I
2 – 8 P01 – 07 O Not used. (Open)
9 (INT0) P10 O Not used. (Open)
10 (INT1) P11 O Not used. (Open)
11 (INT2/TC1) P12 O Not used. (Open)
12 (DVO) P13 O Not used. (Open)
13 (PPG) P14 O Not used. (Open)
14 (TC2) P15 O Not used. (Open)
15 P16 O Not used. (Open)
16 TEST MODE I
17 XCV_INT_I I Interruption request signal input from CL680T-D1 (IC701).
18 TEST I Test pin (Fixed at “L” in this set)
19 P21 (XTI) O Not used. (Open)
20 P22 (XTOUT) O Not used. (Open)
21 RESET_I I System reset signal input from TMP88CM22F (IC801). (L: Reset)
22 XIN_I I High frequency oscillator input
23 XOUT O High frequency oscillator output (Not used in this set)
24 VSS — Ground
25 – 30 P30 – 35 O Not used. (Open)
31 NC O Not used. (Open)
32 C_RESET O Reset signal output to CL680T-D1 (IC701). (L: Reset)
33 XCV_RDY_I I Ready signal input from CL680T-D1 (IC701).
34 VC_SEL_O O Address select signal output to CL680T-D1 (IC701).
35 VC_CLK_O O Serial clock signal output to CL680T-D1 (IC701).
36 DATA_C2V_I I Serial data signal input from CL680T-D1 (IC701).
37 DATA_V2C_O O Serial data signal output to CL680T-D1 (IC701).
38 UV_CLK_I I Serial clock signal input from TMP88CM22F (IC801).
39 DATA_U2V_I I Serial data signal input from TMP88CM22F (IC801).
40 DATA_V2U_O O Serial data signal output to TMP88CM22F (IC801).
41 XU_TX_REQ_I I Request signal input from TMP88CM22F (IC801).
42 XU_RX_RDY_I I Ready signal input from TMP88CM22F (IC801).
43 XV_TX_REQ_O O Request signal output to TMP88CM22F (IC801).
44 P53 (HPWM0) I Not used. (Open)
45 P54 (HPWM1) I Not used. (Open)
46 AVSS — Not used. (Open)
47 AVREF — Not used. (Open)
48 P60 (AIN0) O Not used. (Open)
49 P61 (AIN1) O Not used. (Open)
50 P62 (AIN2) O Not used. (Open)
51 P63 (AIN3) O Not used. (Open)
52 P64 (AIN4) O Not used. (Open)
53 P65 (AIN5) O Not used. (Open)
54 P66 (AIN6) O Not used. (Open)
55 P67 (AIN7) O Not used. (Open)
56 VDD — Digital power supply pin (+3.2 V)
NTSC/PAL video system test mode input (L: PAL, H: NTSC)
(Normally, fixed at “H” in this set)
Video system test mode input (L: Normal mode, H: Test mode)
(Normally, fixed at “L” in this set)
D-VE45
11
D-VE45
Pin No. Pin Name I/O Pin Description
57 P70 (AIN10) O Not used. (Open)
58 P71 (AIN11) O Not used. (Open)
59 P72 (AIN12) O Not used. (Open)
60 P73 (AIN13) O Not used. (Open)
61 P74 (AIN14) O Not used. (Open)
62 P75 (AIN15) O Not used. (Open)
63 P76 (AIN16) O Not used. (Open)
64 P77 (AIN17) O Not used. (Open)
12
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