Sony D-VJ65 Service manual

D-VJ65

SERVICE MANUAL

Ver 1.0 2000. 06

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 EIAJ CP-307)

Output (at 4.5 V input level)

Audio output (stereo minijack)

Output level 0.7 V rms at 47 kilohms Recommended load impedance over 10 kilohms

Video output (minijack)

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): E model: 220 - 230 V, 50/60 Hz CH model: 220 V, 50 Hz HK model: 220 V, 50/60 Hz

• Two Sony NH-WM2AA rechargeable batteries: 2.4 V DC

• Two Sony NC-WMAA rechargeable batteries: 2.4 V DC

• Sony DCC-E245 car battery cord for use on car battery: 4.5 V DC

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 NC-WMAA 1 10 (charged for about 4 hours **) NH-WM2AA 3 20 (charged for about 4 hours **) Two Sony alkaline 3 32 batteries LR6SG

* Measured value by the standard of EIAJ

(Electronic Industries Association of Japan).

** Charging time varies depending on how the

rechargeable battery is used.

E Model

Chinese Model

Model Name Using Similar Mechanism D-EJ611/EJ615 CD Mechanism Type CDM-3223EBA 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. 131.5 × 29.0 × 135.5 mm

1/4 × 1 3/16 × 5 3/8 in.)

Mass

Approx. 200 g (7.1 oz) (excluding rechargeable batteries)

Design and specifications are subject to change without notice.

Supplied accessories

AC power adaptor AC-E455D (1) (E) AC power adaptor AC-E455 (1) (CH, HK) Audio cable (1) Video cable (1) Wireless remote control RMT-DV11 (1) Earphones with remote control RM-CD6 (1) + MDR-E805SP (1)

• Abbreviation CH: Chinese model HK: Hong Kong model

– 1 –

PORTABLE VIDEO CD PLAYER

CAUTION

Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

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.

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.

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.

• 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. Note: Do not push the detection lever strongly , or it may be bent

or damaged.

3. Press the u 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 pickup is faulty. In this operation, the objective lens will move up and down 5 times along with inward motion for the focus search.

S801

Fig. 1

• FOK output : IC601 eg pin When checking FOK, remove the lead wire to disc motor.

• RF signal P-to-P value : 0.45 - 0.65 Vp-p

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 P AR TS WHOSE P ART NUMBERS APPEAR AS SHO WN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

– 2 –

TABLE OF CONTENTS

1. GENERAL

Getting started .........................................................................4

Playing a VIDEO CD .............................................................. 4

Playing an audio CD................................................................ 5

2. DISASSEMBLY

2-1. Cabinet (Rear) Sub Assy, Cabinet (Upper), Main Board.... 6

2-2. MD Assy ............................................................................. 6

2-3. Motor Assy, Turntable (Spindle) (M901)............................ 7

2-4. “Motor Assy, Sled (Sled) (M902)”,

Optical Pick-up DAX-23E ................................................... 7

2-5. Switch Unit ......................................................................... 7

3. TEST MODE

3-1. Outline................................................................................. 8

3-2. Pick-up Operational Checks................................................ 8

3-3. Video Signal Verification .................................................... 8

4. ELECTRICAL ADJUSTMENT

4-1. Precautions for Check .........................................................9

4-2. Focus Bias Check................................................................ 9

5. DIAGRAMS

5-1. IC Pin Descriptions ...........................................................10

5-2. Block Diagram –CD Section (1/2)–.................................. 15

5-3. Block Diagram –CD Section (2/2)–.................................. 17

5-4. Block Diagram –Video Section–.......................................19

5-5. Block Diagram –Power Supply Section–.......................... 21

5-6. Printed Wiring Boards....................................................... 25

5-7. Schematic Diagram –Main Section (1/4)–........................ 29

5-8. Schematic Diagram –Main Section (2/4)–........................ 31

5-9. Schematic Diagram –Main Section (3/4)–........................ 33

5-10. Schematic Diagram –Main Section (4/4)– ........................ 35

6. EXPLODED VIEWS

6-1. Cabinet Section .................................................................39

6-2. CD Mechanism Deck Section ........................................... 40

7. ELECTRICAL PARTS LIST......................................... 41

– 3 –

SECTION 1

GENERAL

This section is extracted from instruction manual.

Getting started

Locating the Controls

For details, see pages in parentheses.

CD player (front)

1 Display (pages 9, 11, 21-24)

2 PLAY MODE button

(pages 20-23)

3 ./>• PREV/

NEXT(AMS/search) buttons (pages 9, 11, 16, 18, 21, 22)

4 VIDEO OUT jack

(pages 7, 17)

5 AUDIO OUT jack

(pages 7, 17, 25)

6 HOLD switch

(page 24)

7 VOLUME +/– buttons

(page 10)

8 MENU button (page 15)

CD player (inside)

qk G-PROTECTION

switch (pages 23)

9 u (play/pause) button

(page 8-12, 14, 15, 23)

q;x (stop) /CHG (charge)

button (pages 8-11, 27)

qa DC IN 4.5V (external

power input) jack (pages 7, 10, 27)

qs RETURN O button

qd SOUND button

qf REPEAT/ENTER/

SELECT button (page 11, 16, 20-23)

qg i/REMOTE jack (page 10)

qh OPEN switch (pages 8, 10)

qj Remote sensor (pages 12)

ql NTSC/PAL switch

(pages 7)

(page 15)

(page 23)

CD player (rear)

w; AVLS switch

(pages 24)

Wireless remote control

ws OSD button (page12)

wd PBC button (page 15)

wf u (play/pause) button

(pages 8-12, 14, 15, 23)

wg PREV . button

(pages 9, 11, 16, 18, 2 1, 22)

wh SLOW button (page 14)

wj PLAY MODE button

(pages 20 - 23)

wk TIME button (page 19)

This button does not function on this model.

wa Battery compartment

(pages 27)

wl Number buttons (pages

9, 11, 15, 18-20, 22)

e; ≥10 button (pages

15, 18, 19, 23)

ea x (stop) button

(pages 8-11)

es NEXT > button

(pages 9, 11, 16, 18, 21, 22)

ed RETURN O

button (page 15)

ef SELECT button

(pages 20)

eg ST/L/R button

(page 14)

eh V-INDEX button

(page 18)

ej REPEAT/ENTER

button (pages 11, 16, 21-23)

(Continued)

Getting started

Remote control

ek x (stop) button

(pages 9-11)

el VOL (volume) +/–

button (page 10)

r; N(play) •> (AMS/

search) button (pages 811, 15, 16, 18, 22, 23)

ra HOLD switch

(page 24)

rs . (AMS/search)

button (pages 9, 11, 16, 18, 22)

Note

Use only the supplied remote control. You cannot operate this VIDEO CD player with the remote control supplied with other VIDEO CD players.

Playing a VIDEO CD

You can play back a VIDEO CD, using the supplied AC power adaptor. You can also use rechargeable batteries and alkaline batteries. (See “Connecting a power source” on pages 27 –

29.) To produce color pictures normally, you need to set the color system properly according to the connected TV.

1. Connect your VIDEO CD player.

1 Connect the AC power adaptor. 2 Connect the video and audio cables. 3 Turn on the power of the TV and set

the input mode selector to the proper position.

to VIDEO OUT

Video cable

Yellow

2. Set the NTSC/PAL switch to the color system of your TV.

1 Slide OPEN and raise the CD compartment lid. 2 Switch to “PAL” or “NTSC” using a pointed

material.

PAL system countries:

China, India, Indonesia, Singapore, Malaysia, etc.

NTSC system countries:

Japan, Korea, Taiwan, U.S.A., etc.

VIDEO

to DC IN 4.5V

to AUDIO OUT

AUDIO

INPUT

to an AC outlet

AC power adaptor

Audio cable

Red

White

Turn on the power and set the input mode selector to the proper position.

PALNTSC

Playing a VIDEO CD

(Continued)

– 4 –

3. Insert a VIDEO CD.

1 Slide OPEN to open the lid. 2 Fit the VIDEO CD to the pivot and

OPEN switch

Label side up

close the lid.

Pause Stop Resume play after pause Locate the next or succeeding tracks Locate the current or preceding tracks Locate a specific track directly

Locate a point in the track while monitoring the picture*

* To return to normal playback, press u (N for the wireless remote control).

The above operations can also be done with the buttons on the supplied wired remote control or wireless remote control.

Do this

Press u. Press x/CHG (x). Press u (N). Press > repeatedly until you find the scene or track. Press . repeatedly unitl you find the scene or track. Press the number button of the track (wireless remote

control only). Press . or > and hold it down until m or M

appears on the TV screen.

Playing a VIDEO CD

4. Play a VIDEO CD.

1 Press u on the main unit or the wireless remote control. 2 Adjust the volume on the equipment connected to this player. (You cannot adjust the

volume from this player except for the signals output from the i/REMOTE jack of the player).

To stop playing, press x.

The player is also turned off.

Notes

The playback picture may be distorted when:

– playing back a PAL system VIDEO CD on an NTSC system TV with the NTSC/PAL switch of this player

set to NTSC.

– playing back an NTSC system VIDEO CD on a PAL system TV with the NTSC/PAL switch of this player

set to PAL.

Playing an audio CD

You can also use rechargeable batteries, alkaline batteries and a car battery. (See “Connecting a power source” on pages 27 - 29.)

1. Connect your CD player.

1 Connect the AC power adaptor. 2 Connect the earphones with remote

control. Connect the earphones firmly. A

loose connection may cause noise during playback.

2. Insert an audio CD.

1 Slide OPEN to open the lid.

OPEN switch

2 Fit the audio CD to the pivot and

close the lid.

Label side up

to i/REMOTE

3. Play an audio CD.

1 Press u on the main unit or press

N on the remote control.

2 Adjust the volume by pressing

VOLUME + or –.

VOLUME +/–

To stop playing, press x.

The player is also turned off.

Note

When playing back an audio CD using the AC power adaptor, it takes a while until the sound is heard.

AC power adaptor

to DC IN

4.5V

VOL

to an AC outlet

Earphones with remote control (supplied)

About the display

• During play, the track number and the elapsed playing time of the current track appear.

• During pause, the elapsed playing time flashes.

If the volume level does not increase (when listening with the headphones/earphone)

Is AVLS set to “LIMIT”? Set AVLS to “NORM.” For details, see “To protect your hearing (AVLS)” on page 24. If a cable is connected to the AUDIO OUT jack, you cannot adjust the volume. In such a case, disconnect the cable.

Removing the VIDEO CD

Remove the VIDEO CD as illustrated.

Pause Stop Resume play after pause Find the beginning of the current track (AMS*) Find the beginning of previous tracks (AMS) Find the beginning of the next track (AMS) Find the beginning of succeeding tracks (AMS) Locate a specific track directly

Go forward quickly Go backwards quickly

* Automatic Music Sensor ** These operations are possible during both play and pause.

The above operations can also be done with the buttons on the supplied wired remote control or wireless remote control.

If you press REPEAT/ENTER to display “REPEAT”, you can locate the tracks continuously in the following order:

• When using >: next track t next track ...... last track t first track t second track ......

• When using .: previous track t previous track ...... first track t last track ......

About the display

• When you press u (N for the remote control), the total number of tracks in the audio CD and total playing time appear for about two seconds.

• During play, the track number and the elapsed playing time of the current track appear.

• Between tracks, the time to the beginning of the next track appears with the “-” indication.

• During pause, the elapsed playing time flashes.

If the volume level does not increase

disconnect the cable.

Removing the audio CD

Remove the audio CD as illustrated.

Press

u x/CHG (x) u (N) . once** . repeatedly** > once** > repeatedly**

Number buttons of the track (wireless remote control only)**

Hold down >** Hold down .**

Playing an audio CD

– 5 –

SECTION 2

)

DISASSEMBLY

• The equipment can be removed using the following procedure. Set Cabinet (Rear) Sub Assy,

Cabinet (Upper), Main Board

MD Assy

Motor Assy, Turntable (Spindle) (M901)

Switch Unit

“Motor Assy, Sled (Sled) (M902)”, Optical Pick-up DAX-23E

Note : Follow the disassembly procedure in the numerical order given.

2-1. CABINET (REAR) SUB ASSY, CABINET (UPPER), MAIN BOARD

lid, upper

3 screws (B2)

2 knob (open)

MD assy

cabinet (upper)

6 flexible board (CN801

MAIN board

2-2. MD ASSY

cabinet (rear) sub assy

4 claws

3 optical pick-up flexible board

(CN501)

2 CN502 (black)

4 claws

1 screw (B2)

4 claws

5 MD assy

MAIN board

1 CN503 (white)

– 6 –

2-3. MOTOR ASSY,

TURNTABLE (SPINDLE) (M901)

1 screws (B1.7x5)

2-4. “MOTOR ASSY, SLED (SLED) (M902)”,

OPTICAL PICK-UP DAX-23E

1 screw (B 1.7x5)

cover, gear

chassis

2-5. SWITCH UNIT

motor assy, turntabl (spindle) (M901)

screw (feed) assy

chassis

gear (B)

motor assy, sled (sled) (M902)

bracket (shaft)

4 screw (P 1.4x3.5)

optical pick-up DAX-23E

0 button (operate)

9 switch unit

7 cover assy, lid

8 claw

6 claws

qa window (LCD)

6 claws

8 claw

6 claws

lid, upper

spring (full open)

cabinet (upper)

1 knob (open)

5 screws

– 7 –

SECTION 3

TEST MODE

3-1. OUTLINE

This set has the test mode in which the pick-up can be operational checked and the video signal can be verified.

3-2. PICK-UP OPERATIONAL CHECKS

3-2-1. Setting the test mode

1. Switch positions

OPEN switch (S801) : OPEN HOLD switch (S803): OFF AVLS switch (S802) : NORM

2. Short the terminal TAP801 (TEST) by soldering it.

3. Supply 4.5 V DC from the DC jack (J401).

3-2-2. Releasing the test mode

1. Open the terminal TAP801 (TEST).

2. Turn the power OFF.

3-2-3.Operational checks

1. When a specific key is operated:

KEY

x All servo off. Mute on.

CHG ((LCD all on))

> switch open). Tracking servo off. Mute on.

. switch open). Tracking servo off. Mute on.

2. In play mode

• Press the u key:

KEY

PLAY

MODE

SELECT REPEAT/

ENTER

Spindle on. Tracking servo off. ((88-00 00))

Moves the pick-up to the outside (with the open

((LCD all on)) Moves the pick-up to the inside (with the open

((LCD all on))

Tracking servo on. Mute off. Each time this key is pressed, the display changes as follows: x1 speed t x2 speed t x3 speed t x4 speed t x1 speed ((01 00 01)) t ((02 00 02)) t ((03 00 03))t ((04 00 04)) Each time this key is pressed, the display changes as follows: Tracking gain up. Emphasis on. ((UP 00 00)) h Tracking gain down. Emphasis off.

Contents of the operation.

((LCD DISPLAY))

Contents of the operation.

((LCD DISPLAY))

3-3. VIDEO SIGNAL VERIFICA TION

3-3-1. Setting the test mode

1. Switch positions OPEN switch (S801) : OPEN HOLD switch (S803) : OFF AVLS switch (S802) : NORM

2. Short the terminal TAP802 (OPEN) and TAP806 (V-TEST) by soldering it.

3. Set the reference video disc HLV-401.

4. Supply 4.5V DC from the DC jack (J401).

3-3-2. Releasing the test mode

1. Open the terminal TAP801(TEST) and TAP806 (V-TEST).

2. Turn the power OFF.

3-3-3. Operational checks

1. Press the u key once (NTSC mode).

2. Verify that a 100% white pattern is output from the VIDEO OUT (J701).

3. Press the x CHG key once (output off).

4. Short the terminal TAP804 (PAL mode)

5. Press u key once.

6. Verify that a 100% white pattern is output from the VIDEO OUT (J701).

7. Press the x CHG key once (output off).

8. Open the TAP804.

1.0 ± 0.2Vp-p

Fig. 100% white pattern

Adjustment Location:

– main board (side A) –

J401

(DC JACK)

TAP804

TAP806 (V-TEST)

J701 (VIDEO OUT)

TAP801 (TEST)

TAP802 (OPEN)

– 8 –

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 AVLS switch : NORM HOLD switch : OFF

4-2. FOCUS BIAS CHECK

Condition:

• Hold the set in horizontal state.

Connection:

oscilloscope (AC range)

MAIN board TP629 (RF)

2 kΩ

Test Points:

– main board (side B) –

90 85 80 75 70 65

100

105

110

115

TP629 (RF)

302520151051

654 1

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 u 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.

• RF signal reference waveform (eye pattern)

VOLT/DIV : 50 mV (10 : 1 probe in use) TIME/DIV : 500 nS

RF level :

0.45 to 0.65 Vp-p

When observing the eye pattern, set the oscilloscope for AC range and raise vertical sensitivity.

– 9 –

SECTION 5

DIAGRAMS

5-1. IC PIN DESCRIPTIONS

• IC801 TMP88CM22F-1B20 (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 CXD3037R (IC601). 4 AGCPWM_O O AGC control pulse output 5 VCDON_O O CHG/HOLD LED control signal output 6 XV_RECV_O O Control signal output for Switching power supply circuit. 7 AMUTE_O O Analog audio muting ON/OFF signal control signal output (H: Mute ON) 8 VCC2ON_O O VCC2 voltage control output

9 XRST_O O Reset signal output to CXD3037R (IC601). (L: Reset) 10 SCK_O O Serial data transfer clock signal output to CXD3037R (IC601). 11 (SENS) MSDTI_I I Serial data input from CXD3037R (IC601). 12 MSDTO_O O Serial data output to CXD3037R (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 OUT (OPTICAL) jack. 15 AD_CHGMNT I Battery charge voltage detection input from TB2119F (IC401). 16 AD_KEY2 I VCD key input 17 AD_BA TMNT I Battery voltage detection input 18 AD_KEY I Key input from switch board (A/D input). 19 AD_RMKEY I Key input from headphones with remote controller (A/D input). 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 CXD3037R (IC601). 26 GRSCOR_I I GRSCOR signal input 27 FG_I I FG pulse input 28 BEEP_O O Beep sound output to HEADPHONE AMP (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 RMRW_O O Read/write control signal output to headphones with remote. (L: Read, H: Write) 34 RMLAT_O O Serial data latch pulse output to headphones with remote. 35 WFCK I WFCK input 36 COMPON_I I G PROTECTION switch input 37 (NTSC/PAL) I NTSC/PAL select input (“L”: PAL, “H”: NTSC) 38 AVLS_I I AVLS (Automatic Volume Limiter System) switch input (L: Normal, H: Limit) 39 HOLD_I I HOLD switch input (L: HOLD on, H: HOLD off) 40 BATDET_I I EXT BATT plug-in detection input 41 XSPDOE_O O Spindle motor driver control signal output 42 XDE_O O Optical pick-up VCC control signal output (L: on) 43 XLAT_O O Serial data latch pulse output to CXD3037R (IC601). (for ESP) 44 XSOE_O O Output enable signal output (for ESP) 45 VOLUME_IC_LATCH_O O Spindle motor driver latch output 46 XPOWLT_O O Latch output to VCD control IC. 47 XDOUTON_O O DIGITAL OUT LED control signal output 48 XAPC_OFF_O O APC mute signal output (L: mute) 49 VRST_O O Reset signal output to TMP87CM41U (IC803).

50 – 64 SEG14 – 0 O LCD drive segment output

– 10 –

Pin No. Pin Name I/O Pin Description

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 V_REQ_I I Stop signal input from VCD control IC. 75 TEST I Test terminal for IC. (Fixed at L in this set) 76 SCSY_O O HEADPHONE AMP ON/OFF control signal output (L: ON) 77 XLIGHT_O O LCD back light control signal output to LCD. 78 RESET_I I System reset signal input from TB2119F (IC401). (L: Reset) 79 XIN_I I Oscillation input 80 XOUT O Oscillation output (Open)

– 11 –

+ 23 hidden pages