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Service Manual
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MZ-R90/R91
SERVICE MANUAL
Ver 1.4 2001.01 With SUPPLEMENT-1 (9-927-187-83)
US Model Canadian Model Australian Model Chinese Model
MZ-R90
AEP Model UK Model E Model Tourist Model
MZ-R90/R91
Photo: MZ-R91 (Blue type)
US and foreign patents licensed from Dolby Laboratories Licensing Corporation.
Model Name Using Similar Mechanism Mechanism Type Optical Pick-up Name
NEW MT-MZR90-165 LCX-2R
SPECIFICATIONS
System Audio playing system
MiniDisc digital audio system
LINE OUT: 194 mV, load impedance 10 kilohm * The i/LINE OUT jack connects either headphones or a line cable.
1) The
Laser diode properties
Material: GaAlAs Wavelength: = 790 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 lens surface on the optical pick-up block with 7 mm aperture.)
battery life may be shorter due to operating conditions and the temperature of the location. 2) When you record, use a fully charged rechargeable battery.
General Power requirements
Sony AC Power Adaptor (supplied) connected at the DC IN 3 V jack: 220230 V AC, 50/60 Hz (European model) 120 V AC, 50 Hz (Canadian model) 100240 V AC, 50/60 Hz (Other models) Nickel metal hydride rechargeable battery NH14WM (supplied) LR6 (size AA) alkaline battery (not supplied)
Dimensions
MZ-R90 Approx. 78.9 × 17.3 × 72.0 mm (w/h/d) (31/8 × 11 /16 × 27/8 in.) MZ-R91 Approx. 78.9 × 18.0 × 72.0 mm (w/h/d) (31/8 × 23/32 × 27/8 in.)
Recording and playback time
Maximum 80 minutes (MDW-80, stereo recording) Maximum 160 minutes (MDW-80, monaural recording) Maximum 74 minutes (MDW-74, stereo recording) Maximum 148 minutes (MDW-74, monaural recording)
Mass
MZ-R90 Approx. 105 g (3.7 oz) the recorder only Approx. 148 g (5.2 oz) incl. a recordable MD, and NH-14WM nickel metal hydride rechargeable battery MZ-R91 Approx. 110 g (3.8 oz) the recorder only Approx. 153 g (5.4 oz) incl. a recordable MD, and NH-14WM nickel metal hydride rechargeable battery
Battery operation time
Battery life1) Batteries Recording
2)
Playback Approx. 12 hours
Revolutions
400 rpm to 1,800 rpm (CLV)
Error correction
Advanced Cross Interleave Reed Solomon Code (ACIRC)
Sampling frequency
44.1 kHz
NH-14WM nickel metal hydride rechargeable battery LR6 (SG) (size AA) Sony alkaline dry battery
Approx. 6.5 hours
Supplied accessories
Sampling rate converter
Input: 32 kHz/44.1 kHz/48 kHz
Approx. 4 hours
Approx. 16.5 hours Approx. 29 hour
Coding
Adaptive TRansform Acoustic Coding (ATRAC)
Modulation system
EFM (Eight to Fourteen Modulation)
Number of channels
2 stereo channels 1 monaural channel
Frequency response
20 to 20,000 Hz ± 3 dB
Approx. NH-14WM 14.5 hours nickel metal hydride rechargeable battery + One LR6 (SG) (size AA)
AC power adaptor (1) Headphones with a remote control (1) (RM-MZ2S) NH-14WM nickel metal hydride rechargeable battery (1) Dry battery case (1) Rechargeable battery carrying case (1) Carrying pouch (1) AC plug adaptor (1) Design and specifications are subject to change without notice.
Wow and Flutter
Below measurable limit
Inputs
Microphone: stereo mini-jack, 0.351.38 mV Line in: stereo mini-jack, 69194 mV Optical (Digital) in: optical (digital) mini-jack
PORTABLE MINIDISC RECORDER
Outputs
i/LINE OUT*: stereo mini-jack Headphones: maximum output level 5 mV + 5 mV, load impedance 16 ohm
TABLE OF CONTENTS 1. 2. 3. 4. 5. 6. SERVICING NOTES ............................................... 3 GENERAL ................................................................... 4 DISASSEMBLY ......................................................... 5 TEST MODE .............................................................. 11 ELECTRICAL ADJUSTMENTS ......................... 18 DIAGRAMS
23 25 27 30 33 46
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. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.
6-1. Block Diagram SERVO Section ................................. 6-2. Block Diagram A/D, D/A CONVERTER, AUDIO Section ............................................................ 6-3. Block Diagram KEY CONTROL/DISPLAY/ POWER SUPPLY Section ........................................... 6-4. Printed Wiring Board ...................................................... 6-5. Schematic Diagram ......................................................... 6-6. IC Pin Function Description ...........................................
7. 8.
EXPLODED VIEWS ................................................ 53 ELECTRICAL PARTS LIST ............................... 57
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.
ATTENTION AU COMPOSANT AYANT RAPPORT À LA SÉCURITÉ! LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
2
SECTION 1 SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down 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. NOTES ON LASER DIODE EMISSION CHECK Never look into the laser diode emission from right above when checking it for adjustment. It is feared that you will lose your sight. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK (LCX-2R) The laser diode in the optical pick-up block may suffer electrostatic break-down easily. When handling it, perform soldering bridge to the laser-tap on the flexible board. Also perform measures against electrostatic break-down sufficiently before the operation. The flexible board is easily damaged and should be handled with care. · When repairing this device with the power on, if you remove the MAIN board or open the upper panel assy, this device stops working. In this case, you can work without the device stopping by fastening the hook of the open/close detect switch (S801) with tape.
upper panel assy
tape
S801
MAIN board
· This set is designed to perform automatic adjustment for each adjustment and write its value to EEPROM. Therefore, when EEPROM (IC802) has been replaced in service, be sure to perform automatic adjustment and write resultant values to the new EEPROM. (Refer to Section 5 Electrical Adjustment. (page 18)) · Replacement of CXD2660GA (IC502) and CXR701080-013GA (IC801) used in this set requires a special tool. Therefore, they cannot be replaced.
laser-tap
OPTICAL PICK-UP FLEXIBLE BOARD
3
SECTION 2 GENERAL
· LOCATION OF CONTROLS
The recorder
0 1 qa 2 qs 3 qd 4 qf 5 qg 6 qh 7 qj 8 qk 9 ql
1 2 3 4 5 6 7 8 9 0 qa qs qd qf qg qh qj qk ql
This section is extracted from instruction manual.
x (stop) /CHARGE button Display window REC indicator DC IN 3V jack Jog lever i/LINE OUT (headphones/line out) jack MIC (PLUG IN POWER) jack LINE IN (OPTICAL) jack HOLD switch Slide to lock the controls of the recorder. N (play) button X (pause) button T MARK (track mark) button REC (record) switch Battery compartment VOL (volume) +/ buttons OPEN switch END SEARCH button ./> (search/AMS) buttons SYNCHRO REC (synchro-recording) ON/OFF switch
The display window of the recorder
1 2 3 4 5 6 7 8 9 0 qa qs qd qf
2 3 1 Character information display Displays the disc and track name*, date, error messages, track numbers, etc. * Disc and track names appear only with MDs that have been electronically labeled. MONO(monaural) indication Disc name/track name indications Appears when labeling disc or track respectively. Play mode indication Shows the play mode of the MD. F (all repeat): All tracks play repeatedly. F 1(single repeat): One track plays repeatedly. F SHUF(shuffle repeat): Tracks will be repeated in random order. SYNC (synchro-recording) indication Lights up while synchro-recording. Disc indication Shows that the disc is rotating for recording, playing or editing an MD. REC indication Lights up while recording. Flashes when standing by for recording. 8 9 Mega bass indication Battery indication Shows approximate battery condition. While charging the rechargeable battery, this indication shows the charging condition. REMAIN (remaining time/tracks) indication Lights up along with the remaining time of the track, remaining time of the MD, or remaining number of tracks. REC DATE (recorded/current date) indication Lights up along with the date and time the MD was recorded. When only "DATE" lights up, the current date and time are displayed. Time display Shows the elapsed time of the track being recorded or played. Level meter Shows the level of the MD being played or recorded. AM/PM indication Lights up along with the time indication in the 12-hour system.
0
4
qa
qs
5 6
qd
qf
7
The headphones with a remote control (RM-MZ2S)
1 2 3 4 5 6 7 0 8
5 1 2 3 4 Headphones Can be replaced with optional headphones. Stereo mini plug x (stop) button Control To play, press the control towards N·> during stop. Press the control towards N·> during play to search the beginning of the succeeding track; hold in this position to fast-forward. Press towards . during play to search the beginning of the preceeding track; hold in this position to rewind. HOLD switch Slide to lock the controls of the remote control. X (pause) button PLAY MODE button DISPLAY button VOL (volume) +/ buttons When the AVLS is set to on, you cannot increase the volume to the maximum. To increase the volume above the limited level, set the AVLS to off using the jog lever. Display window
9
6 7 8 9
0
4
SECTION 3 DISASSEMBLY
· This set can be disassembled in the order shown below.
Main Board, "Case Assy, Battery" Set Panel Assy, Bottom Upper Panel Section LCD Module, "Button, Control", "Service Assy, Upper Panel" (R90/R91)
Belt Assy, Ornamental
Main Board, "Case Assy, Battery"
"Chassis Assy, Set", MD Mechanism Deck (MT-MZR90-165)
Service Assy, OP Motor Flexible Board Motor, DC (Sled) (M602)
Holder Assy
"Motor, DC SSM-01C14A (Spindle) (M601)", "Motor, DC (Over Write Head Up/Down) (M603)"
Note: Follow the disassembly procedure in the numerical order given.
PANEL ASSY, BOTTOM
Note: On installation of bottom panel assy, adjust the position of both two switches (S804, S807) and two knobs (hold).
S807 S804 1 Open the battery case lid. 2 two claws
3 battery case lid
4 Close the battery terminal (plus).
5 two screws (1.4)
5 two screws (1.4)
A
6 Remove the bottom panel assy in the direction of arrow A.
knob (hold)
5 screw (1.4)
UPPER PANEL SECTION
5 upper panel section
4 two screws (1.4)
1 flexible board (CN801)
4 two screws (1.4) 3
2 knob (open)
5
LCD MODULE, "BUTTON, CONTROL", "SERVICE ASSY, UPPER PANEL" · MZ-R90
1 five screws (1.4)
2 LCD module 3 control button
4 upper panel service assy
· MZ-R91
1 five tapping screws (1.7)
2 LCD module
3 control button Note: The control buttons are stuck with strong adhesive sheets. As the control buttons are very fragile, do not peel them off forcibly.
5 upper panel service assy
4 adhesive sheet (control button) Note: Also replace the adhesive sheets (control button), when replacing the control buttons and upper panel service assy.
6
MAIN BOARD, "CASE ASSY, BATTERY"
2 flexible board (over write head) (CN601) 3 four toothed lock screws (M1.4)
2 flexible board (LCD module) (CN801)
1 Remove the solder of joint.
4
1 Remove the solder of battery terminal (minus).
6 main board 8 batter case assy
1 Remove the solder of battery terminal (plus).
2 motor flexible board (CN602)
5 flexible board (optical pick-up) (CN501) Note: Before removing the flexible board from CN501, be sure to solder the flexible board. (Refer to servicing notes (NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK (LCX-2R)) page 3.)
7 four bosses
BELT ASSY, ORNAMENTAL
Note: As the ornamental belt assy is very fragile, do not give an excessive force to the entire assy when removing it. B 6 Remove the ornamental belt assy in the direction of arrow C.
A
1 Pull toward the direction A to disengage two bosses .
)
2 Open toward the direction B to disengage two bosses and convex portions pointed with *. 4 knob (open) A
)
C 3 three bosses
^
boss
)
B 2 Open toward the direction B to disengage two bosses and convex portions pointed with *.
)
boss
@ @
5 two bosses boss
boss
7
"CHASSIS ASSY, SET", MD MECHANISM DECK (MT-MZR90-165)
3 MD mechanism deck (MT-MZR90-165)
2 boss
2 boss
4 tension spring (arm)
1 screw (1.4) 5 set chassis assy
1 screw (1.4)
SERVICE ASSY, OP
1 washer (0.8 - 2.5) 3 precision pan screw (M1.4) 4 rack spring 5 screw 2 gear (SA) 7 Pull off the lead screw. 5 screw
8 bearing
6
B
9 Opening the over write head toward the direction A, remove the OP Service assy toward the direction B. Note: Do not open the entire assy forcibly, when opening the over write head.
over write head section A
8
HOLDER ASSY
5 Remove the holder assy in the direction of arrow C.
B 1 Open the holder assy. A 3 2 Push the convex portion toward the direction B and open the holder assy toward the direction A to erect uprightly.
C
4 boss
MOTOR FLEXIBLE BOARD
1 Remove four solders of DC motor (sled) (M602). 1 Remove two solders of DC motor (over write head up/down) (M603).
2 adhesive sheet Note: Align a circular hole in the stripping paper with a circular hole in the DC motor (sled), when mounting the motor flexible board.
1 Remove four solders of DC motor (spindle) (M601).
3 motor flexible board
DC motor (sled) circular hole
9
MOTOR, DC (SLED) (M602)
1 Remove four solders of motor flexible board. 2 washer (0.8 - 2.5)
4 two precision pan screws (M1.4)
3 gear (SA) 5 DC motor (sled) (M602)
"MOTOR, DC SSM-01C14A (SPINDLE) (M601)", "MOTOR, DC (OVER WRITE HEAD UP/DOWN) (M603)"
1 Remove six solders of motor flexible board. Note: Press-fit the gear (HA) up to the position of the DC motor (over write head up/down) (M603) as shown below. gear (HA) 2.65 mm gear chassis assy DC motor (over write head up/down) (M603)
qa DC motor (over write head up/down) (M603)
6 two precision pan screws (M1.4) 4 three precision pan screws (M1.4) qs gear chassis assy 9 screw (M1.2 × 1.5)
0 gear (HA) 8 gear (HB) 7 washer (0.8 - 2.5) 2 washer (0.8 - 2.5)
3 gear (HC)
5 DC motor (spindle) (M601)
10
SECTION 4 TEST MODE
[Outline]
· This set provides the Overall adjustment mode (Assy mode) that allows CD and MO disc to be automatically adjusted when in the test mode. In this overall adjustment mode, the protect switch is detected to judge the disc, CD or MO, and each adjustment is automatically executed in order. If a fault is found, the system displays its location. Also, the manual mode allows each individual adjustment to be automatically adjusted. · The keys in the description refer to the keys on both set and remote commander unless otherwise specified. Though LCD display shows the LCD of the remote commander, same contents are also displayed on the LCD of the set. 2 In the normal mode, turn on the HOLD switch on the set. While pressing the N key on the set, press the following set keys in the following order:
> t > t . t . t > t . t > t . t X t X
[Operation in Setting the Test Mode]
· When the test mode becomes active, first the display check mode is selected. (Press x key once, when the display check mode is not active.) · Other mode can be selected from the display check mode. · When the test mode is set, the LCD repeats the following display. LCD display
F1SHUF REC
[Setting Method of Test Mode]
There are two different methods to set the test mode: 1 Short BP801 (TEST) on the MAIN board with a solder bridge (connect pin y; of IC801 to the ground). Then, turn on the power. MAIN BOARD (Conductor Side)
All lit
888 xxxxxxxxx
All off
Microprocessor version 001 display
V0.000
· When the X key is pressed and hold down, the display at that time is held so that display can be checked.
[Releasing the Test Mode]
For test mode set with the method 1: Turn off the power and open the solder bridge on BP801 (TEST) on the MAIN board.
Note: Remove the solders completely. Remaining could be shorted with the chassis, etc.
For test mode set with the method 2: Turn off the power.
Note: If electrical adjustment (see page 18) has not been finished completely, always start in the test mode. (The set cannot start in normal mode.)
(
BP801 Short: Test Mode Open: Normal Mode
)
11
[Configuration of Test Mode] [Test Mode $Display Check Mode%] Press the > or [VOL +] key [Manual Mode]
Press the x key
[VOL +] key:100th place of mode number [Major item switching]
N key x key
increase.
[VOL --] key:100th place of mode number
decrease.
[Servo Mode] [Audio Mode] [Power Mode] [OP Alignment Mode] [Overall Adjustment Mode]
[VOL +] key:10th place of mode number increase. [Medium item switching] [VOL --] key:10th place of mode number
N key x key
decrease.
Press the . or [VOL --] key
[Minor item switching]
N key: Unit place of mode number
Press the x key Press the N or [REC] key on the set Press the x key
increase.
[Adjusted value variation] [VOL +] key:Increases the
adjusted value [VOL --] key:Decreases the adjusted value
[Sound Skip Check Result Display Mode]
Move up the jog key on the set or press the [DISPLAY] key on the remote commander
[Self-Diagnosis Display Mode]
Press the x key Press the [T MARK] or [DISPLAY] key on the remote commander for several seconds.
[Adjusted value write]
X key: When adjusted value is
[Key Check Mode]
Quit the key check or open the upper panel
changed: Adjusted value is written. When adjusted value is not changed: That item is adjusted automatically.
[Manual Mode]
Mode to adjust or check the operation of the set by function. Normally, the adjustment in this mode is not executed. · Transition method in Manual Mode 1. Setting the test mode. (See page 11) 2. Press the > or [VOL +] key activates the manual mode where the LCD display as shown below.
LCD display
000
Manual
3. The optical pick-up moves outward or inward while the > or . key is pressed for several seconds respectively. 4. Each test item is assigned with a 3-digit mode number; 100th place is a major item, 10th place is a medium item, and unit place is a minor item.
12
5. The display changes a shown below each time the jog key on the set is turned up or [DISPLAY] key on the remote commander is pressed.
[Overall Adjustment Mode]
Mode to adjust the servo automatically in all items. Normally, automatic adjustment is executed in this mode at the repair. Adjust the CD first, when performing adjustment. · Configuration of overall adjustment
> key Title display . key
· Address & Adjusted Value Display
LCD display
011
C68S01
adjusted value
N key protect switch ON
address mode number
CD overall adjusting
· Jitter Value & Adjusted Value Display
LCD display
All item OK
NG item exists or x key
CD overall adjustment NG
011
0FFJ01
adjusted value
x key
jitter value mode number x key
· Block Error Value & Adjusted Value Display
LCD display
CD overall adjustment OK > key
protect switch OFF
adjusted value MO overall adjusting
011
063B01
block error value mode number
· ADIP Error Value & Adjusted Value Display
LCD display
NG item exists or x key
MO overall adjustment NG MO overall adjustment OK
011
059A01
adjusted value
x key
ADIP error value mode number
x key
· Item Title Display
LCD display
[Test mode $display check mode%]
For further information, refer to the Section 5 Electrical Adjustment. (See page 18)
011
LrefPw 01
adjusted value
item title mode number
However in the power mode (mode number 700's), only the power adjustment value is displayed.
· Power Supply Adjusted Value
LCD display
731
AD
85
adjusted value
fixed display mode number
6. Quit the manual mode, and press x key to return to the test mode (display check mode).
13
[Sound Skip Check Result Display Mode]
This set can display and check the error count occurring during record and play. · Setting method of Sound Skip Check Result Display Mode 1. Setting the test mode. (See page 11) 2. Press the N or [REC] key on the set activates the sound skip check result display mode where the LCD displays as shown below. If microprocessor version is 1.20 When N key is pressed:
LCD display
4. When [REC] key on the set is pressed, the total of error count is displayed on the LCD, and each time the > key is pressed, the error count descents one by one as shown below. Also, when . key is pressed, the error count ascends by one. If N key is pressed, the error count during play is displayed.
If microprocessor version is 1.20.
000
If microprocessor version is 1.30 or later.
000
Rtry** ###### BOvr** Bful**
P**R** BOvr** Bful** Rtry** ######
000
000
000
Stat**
Total of play system error count
000
000
000
000
When [REC] key on the set is pressed:
LCD display
000
000
Rtry**
Total of record system error count
** : Sound skip check items counter (hexadecimal) ###### : 6-digit address (hexadecimal) where a sound skipped last
If microprocessor version is 1.30 or later When N or [REC] key on the set is pressed:
LCD display
Error code
Cause of error EIB Playback Stat Adrs BEmp Description of error Sound error correction error Decorder status error Cannot access the address Buffer becomes empty Buffer becomes full and sounds are dumped Buffer capacity lowers and data are forcibly written Retry count over
000
P**R**
Total of record system error count Total of play system error count
BOvr Recording BFul Rtry
3. When N key is pressed, the total of error count is displayed on the LCD, and each time the > key is pressed, the error count descents one by one as shown below. Also, when . key is pressed, the error count ascends by one. If [REC] key on the set is pressed, the error count during record is displayed.
If microprocessor version is 1.20.
000
5. Quit the sound skip check result display mode, and press the x key to return to the test mode (display check mode).
If microprocessor version is 1.30 or later.
000
Stat** BEmp** ###### EIB **
P**R** EIB ** Stat** Adrs** BEmp** ######
000
000
000
000
000
000
000
000
** : Sound skip check items counter (hexadecimal) ###### : 6-digit address (hexadecimal) where a sound skipped last
14
[Self-Diagnosis Display Mode]
· This set uses the self-diagnosis system in which if an error occurs in recording/playback mode, the error is detected by the model control and power control blocks of the microprocessor and information on the cause is stored as history in EEPROM. By viewing this history in test mode, it helps you to analyze a fault and determine its location. Total recording time has been recorded as optical pick-up using time, and it is compared with the total recording time in the self-diagnosis display mode to find when an error occurred. Clear both total recording time and the time in self-diagnosis display mode, when the optical pick-up was replaced. 1. Setting the test mode. (See page 11) 2. Move up the jog key on the set or press the [DISPLAY] key on the remote commander activates the self-diagnosis display mode where the LCD display as shown below.
LCD display
000
1st0**
history code
* * : Self-Diagnosis Data
3. Then, each time > key is pressed, LCD display descends by one as shown below. Also, the LCD display ascends by one when . key is pressed.
000
1st0** 1st1** 1st2** N N N 0** 1** 2**
000
1
000
N-11** N-12** N-20** N-21** N-22** R ####
000
000
000
000
000
000
000
000
000
N-10**
1
000
4. Quit the self-diagnosis display mode, and press the x key to return to the test mode (display check mode).
15
· Description of Indication History History code number 1st0 1st1 1st2 N0 N1 N2 N-10 N-11 N-12 N-20 N-21 N-22 REC The first error Total recording time when 1st0 was generated (Higher rank byte) Total recording time when 1st0 was generated (Lower rank byte) The last error Total recording time when N 0 was generated (Higher rank byte) Total recording time when N 0 was generated (Lower rank byte) One error before the last. Total recording time when N-10 was generated (Higher rank byte) Total recording time when N-10 was generated (Lower rank byte) Two errors before the last. Total recording time when N-20 was generated (Higher rank byte) Total recording time when N-20 was generated (Lower rank byte) Total recording time * * Total recording time Total recording time is recorded in minutes. It is recorded in hexadecimal format and up to 65,535 min. can be counted. It returns to "0000h" when recorder goes beyond this limit. Description
· Description of Error Indication Codes Problem No error Indication code 00 01 Servo error 02 03 04 21 Power error 22 23 24 Meaning of code No error Illegal access target address was specified High temperture Focus error Spindle error Initial low battery Low battery Low battery NI Low battery AM Attempt to access an abnormal address High temperture Forcus could not be applied Abnormal lotation of disc Abnormal voltage at initialization Momentary interruption detected Momentary interruption detected (NiMH) Momentary interruption detected (AM) Description
[Clearing Self-Diagnosis Data and Total Recording Time]
1. Setting the test mode. (See page 11.) 2. Move up the jog key on the set or press the [DISPLAY] key on the remote commander activates the self-diagnosis display mode. 3. Press the X key or [REC] key on the set during display of self-diagnosis data when clearing the self-diagnosis data, or during display of total recording time when clearing the total recording time. Thus, "ClrOK?" will be displayed on the LCD, and press the same key again, and when self-diagnosis data is cleared "ErrCLR" is displayed and the data is cleared. Also when total recording time is cleared, " ReeT O" is displayed and it is cleared.
16
[Key Check Mode]
This set can check if the set and remote commander function normally. · Setting Method of Key Check Mode 1. Setting the test mode. (See page 11) 2. Press the [T MARK] or [DISPLAY] key on the remote commander for several seconds activates the key check mode where all segments of LCD turn OFF. (At the last two digits of DOT section, AD value of remote commander key line is displayed in hexadecimal) 3. When each key is pressed, it is displayed on the LCD, implying that it was successfully checked as shown below. However, for the slide switch on the set, it is not checked unless it is reciprocated. * The key pressed to enter the key check mode was already checked at that time. Set key
Key N > . X VOL + VOL x REC END SEARCH Jog (up) Jog (down) Jog (push) T MARK HOLD (hold) HOLD (off) SYNCHRO REC (on) SYNCHRO REC (off) Indication PLAY FF FR PAUSE VOL + VOL STOP REC END S JOG+ JOG PUSH T MARK HLDon HLDoff SYCon SYCoff
Remote commander key
Key N/> . X VOL + VOL x PLAYMODE DISPLAY Indication rPLAY rFR rPAUSE rVOL + rVOL rSTOP rPMODE rDISP
4. The test mode (display check mode) is automatically activated when all keys on the set and remote commander were checked (see above). Also, the test mode (display check mode) gets back if opening the upper panel during a key check.
17
Ver 1.4 2001. 01
SECTION 5 ELECTRICAL ADJUSTMENTS
[Outline]
· In this set, automatic adjustment of CD and MO can be performed by entering the test mode. (See page 11) However, before starting automatic adjustment, the memory clear, power adjustment and temperature adjustment must be performed in the manual mode. · The keys in the description refer to the keys on both set and remote commander unless otherwise specified. Though LCD display shows the LCD of the remote commander, same contents are also displayed on the LCD of the set.
[NV Reset]
· Setting method of NV reset 1. Select the manual mode of test mode, and set mode number 021NV Reset.
LCD display
021
ResNV
2. Press the X key.
LCD display
[Precautions for Adjustment]
1. Adjustment must be done in the test mode only. After adjusting, release the test mode. 2. Use the following tools and measuring instruments. · Test CD disc TDYS-1 (Part No. : 4-963-646-01) · SONY MO disc available on the market. · Laser power meter LPM-8001 (Part No. : J-2501-046-A) · Digital voltmeter 3. Unless specified otherwise, supply DC 3V from the DC IN 3V jack. 4. Switch position HOLD switch ................ OFF 021
ResOK?
3. Press the X key once more.
LCD display
021
Res***
r NV reset (after several seconds)
021
Reset!
[Adjustment Sequence]
Adjustment must be done with the following steps. 1. NV Reset (Memory clear) r 2. Power Supply Manual Adjustment Manual Mode r 3. Temperature correction r 4. CD Overall Adjustment r Overall Mode 5. MO Overall Adjustment
4. Quit the manual mode, and activate the test mode.
[Power Supply Manual Adjustment]
· Adjustment sequence Adjustment must be done with the following steps. 1. VC PWM Duty (L) adjustment (mode number: 762) r 2. VREM PWM Duty (H) adjustment (mode number: 763) r 3. VREM PWM Duty (L) adjsutment (mode number: 764) r 4. VC PWM Duty (H) adjustment (mode number: 765) r 5. VREM PWM Duty (H) adjustment (mode number: 766) r 6. VREM PWM Duty (L) adjustment (mode number: 767)
18
· Adjustment method of VC PWM Duty (L) (mode number: 762) 1. Select the manual mode of the test mode, and set the mode number 762. (See page 12)
LCD display
· Adjustment method of VC PWM Duty (H) (mode number: 765) 1. Select the manual mode of the test mode, and set the mode number 765. (See page 12)
LCD display
762
VclPWM
765
VchPWM
2. Connect a digital voltmeter to the TP915 (VC) on the MAIN board, and adjust [VOL +] key (voltage up) or [VOL --] key (voltage down) so that the voltage becomes 2.5 ± 0.02 V. Proceed to the next step without pressing X key if voltage is already adjusted.
digital voltmeter
2. Connect a digital voltmeter to the TP915 (VC) on the MAIN board, and adjust [VOL +] key (voltage up) or [VOL --] key (voltage down) so that the voltage becomes 2.75 ± 0.02 V. Proceed to the next step without pressing X key if voltage is already adjusted. digital
voltmeter MAIN board
MAIN board TP915 (VC) TP5105 (GND) TP915 (VC) TP5105 (GND)
3. Press the X key to write the adjusted value. · Adjustment method of VREM PWM Duty (H) (mode number: 763) 1. Select the manual mode of the test mode, and set the mode number 763. (See page 12)
LCD display
3. Press the X key to write the adjusted value. · Adjustment method of VREM PWM Duty (H) (mode number: 766) 1. Select the manual mode of the test mode, and set the mode number 766. (See page 12)
LCD display
763
VrhVcl
766
VrhVch
2. Connect a digital voltmeter to the TP914 (VR) on the MAIN board, and adjust [VOL +] key (voltage up) or [VOL --] key (voltage down) so that the voltage becomes 2.75 ± 0.02 V. Proceed to the next step without pressing X key if voltage is already adjusted.
digital voltmeter MAIN board TP914 (VC) TP5105 (GND)
2. Connect a digital voltmeter to the TP914 (VR) on the MAIN board, and adjust [VOL +] key (voltage up) or [VOL --] key (voltage down) so that the voltage becomes 2.75 ± 0.02 V. Proceed to the next step without pressing X key if voltage is already adjusted.
digital voltmeter
MAIN board TP914 (VC) TP5105 (GND)
3. Press the X key to write the adjusted value. · Adjustment method of VREM PWM Duty (L) (mode number: 764) 1. Select the manual mode of the test mode, and set the mode number 764. (See page 12)
LCD display
3. Press the X key to write the adjusted value. · Adjustment method of VREM PWM Duty (L) (mode number: 767) 1. Select the manual mode of the test mode, and set the mode number 767. (See page 12)
LCD display
764
VrlVcl
767
VrlVch
2. Connect a digital voltmeter to the TP914 (VR) on the MAIN board, and adjust [VOL +] key (voltage up) or [VOL --] key (voltage down) so that the voltage becomes 2.5 ± 0.02 V. Proceed to the next step without pressing X key if voltage is already adjusted. digital
voltmeter MAIN board TP914 (VC) TP5105 (GND)
2. Connect a digital voltmeter to the TP914 (VR) on the MAIN board, and adjust [VOL +] key (voltage up) or [VOL --] key (voltage down) so that the voltage becomes 2.5 ± 0.02 V. Proceed to the next step without pressing X key if voltage is already adjusted. digital
voltmeter MAIN board TP914 (VC) TP5105 (GND)
3. Press the X key to write the adjusted value.
3. Press the X key to write the adjusted value.
19
[Temperature Correction]
· Adjustment Method of temperature correction 1. Select the manual mode of test mode, and set the mode number 014. (See page 12)
LCD display
· CD Automatic Adjustment item
Mode No. 312 313 314 328 321 323 CD electrical offset adjustment CD TWPP gain adjustment CD tracking error gain adjustment CD tracking error offset adjustment CD ABCD level adjustment CD focus gain adjustment CD tracking gain adjustment CD two-axis sensibility adjustment CD focus bias adjustment Description
014
SetTmp
2. Measure the ambient temperature. 3. Adjust with [VOL +], [VOL --] key so that the adjusted value (hexadecimal value) becomes the ambient temperature. (Initial value: 14h = 20 °C, Adjusting range: 80h to 7fh (128 °C to +127 °C) 4. Press the X key to write the adjusted value.
332 336 344 345 521 522 341
[Overall Adjustment Mode]
· Adjustment Method of Overall Adjustment Mode 1. Setting the test mode. (See page 11) 2. Press the . or [VOL --] key activates the overall adjustment mode where the LCD display as shown below.
LCD display
5. If the result of automatic adjustment is OK, the following display appears in the LCD:
LCD display
000
ASSY**
: (DISC MARK) When power adjustment "H" finished; Outward ON When power adjustment "L" finished; Inward ON Power supply is not yet adjusted unless both outward and inward disc marks are ON. Note: Disc mark is displayed on the remote commander LCD only. : Left side = MO auto adjustment information F : Auto adjustment finished 1 : Manual adjustment remains 0 : Not adjusted yet Right side = CD auto adjustment information F : CD auto adjustment finished 1 : Manual adjustment remains (not auto adjustment) 0 : Not adjusted yet
341
CD OK
6. If the result of automatic adjustment is NG, the following display appears in the LCD:
LCD display
### NG
# # # : Overall adjustment. NG mode number
**
3. Insert the CD test disc TDYS-1 (Parts No.4-963-646-01) or an available SONY CD disc. 4. Press N key. The system discriminates between CD and MO and performs automatic adjustment for CD. Also, if . key is pressed, CD is adjusted automatically.
LCD display
7. If NG, set the manual mode. Perform automatic adjustment for the items not accepted. (See page 12) 8. If CD adjustment is OK, insert an available SONY MO disc (recorded). At this time, be sure to turn OFF the disc protect switch. 9. Press N key. The system discriminates between CD and MO and performs automatic adjustment for the MO disc. Also, if > key is pressed, MO is adjusted automatically. However, when CD adjustment is not finished, "SetCD!" is blinking on the LCD and MO adjustment is not executed.
LCD display
%%%
MO RUN
%%%: Manual mode number being executed
%%%
CD RUN
%%%: Manual mode number being executed
20
Ver 1.4 2001. 01
· MO Automatic Adjustment item
Mode No. 112 113 114 118 221 223 232 236 244 245 121 122 134 131 132 136 144 145 138 434 431 432 436 445 411 412 448 141 32 cluster full recording MO focus bias adjustment MO write ABCD level adjustment MO write tracking gain adjustment MO normal speed read TWPP offset adjustment MO ABCD level adjustment MO focus gain adjustment MO tracking gain adjustment MO RF gain adjustment MO write TWPP gain adjustment MO write TWPP offset adjustment Lower reflection CD ABCD level adjustment Lower reflection CD focus gain adjustment Lower reflection CD tracking gain adjustment MO tracking error gain adjustment MO tracking error offset adjustment MO TWPP gain adjustment MO double speed read TWPP offset adjustment Lower reflection CD tracking error gain adjustment Lower reflection CD tracking error offset adjustment MO electrical offset adjustment Description
14. When both CD and MO overall adjustments are OK, set the manual mode and clear the clock data. For the microprocessor version 1.20 or later, set the mode number 043 (Resume), and press the X key.
LCD display
[Laser Power Check]
Connection :
laser power meter
Connecting Location: MAIN BOARD (Component Side)
043
Resume
r Press the X key, historical data clear
Optical pick-up objective lens
TP914 (VR)
043
ResClr
MAIN board Both ends of R1005
digital voltmeter
Note: In step 10, set the clock data to 99Y11M11D11H11M00S, and in step 14, do not set the clock.
TP915 (VC)
10. If the result of automatic adjustment is OK, the following display appears in the LCD:
LCD display
141
MO OK
Check Method : 1. Select the manual mode of test mode, and set the laser power adjusting mode. (mode number 010) 2. Press the . key continuously until the optical pick-up moves to the most inward track. 3. Open the cover and set the laser power meter on the objective lens of the optical pick-up. 4. Press the N key, and set the laser MO read adjustment mode. (mode number 011) 5. Check that the laser power meter reading is 0.81 ± 0.08 mW. 6. Check that the voltage both ends of resitor R1005 at this time is below 44 mV. 7. Press the N key, and set the laser CD read adjustment mode. (mode number 012) 8. Check that the laser power meter reading is 0.97 ± 0.10 mW. 9. Check that the voltage both ends of resitor R1005 at this time is below 44 mV. 10. Press the N key, and set the laser MO write adjustment mode. (mode number 013) 11. Check that the laser power meter reading is 4.95 ± 0.50 mW. 12. Check that the voltage both ends of resister R1005 at this time is below 80 mV. 13. Press the x key. 14. Release the test mode.
TP5105 (GND)
MAIN BOARD (Conductor Side)
11. If the result of automatic adjustment is NG, the following display appears in the LCD:
LCD display
R1005 (+) ()
### NG
###: Overall adjustment. NG mode number
12. If NG, set the manual mode. Perform automatic adjustment for the items not accepted. (See page 12) 13. To clear the data in overall adjustment mode, set the manual mode and change the mode number 021 (Res NV) to reset the NV. (See page 12)
21
22
MZ-R90/R91 SECTION 6 DIAGRAMS
6-1. BLOCK DIAGRAM SERVO Section
HR601 OVER WRITE HEAD OPTICAL PICK-UP BLOCK (LCX-2R) RF AMP, FOCUS/TRACKING ERROR AMP IC501 DETECTOR JX JY JX JY B C D B A I-V AMP A B 14 A 12 D 6 C 5 ABCD AMP ADIP FOCUS ERROR AMP TRACKING ERROR AMP TON 68 LASER DIODE S-MONITOR LD-A AUTOMATIC POWER CONTROL Q1001 PD-O TPP/WPP S-MON WPPLPF 43 3 LOW-PASS FILTER SWITCH Q501 79 S MON XIC RST OFTRK 2 XSHOCK 51 FOK 52 DQSY 54 SQSY 53 XINT 55 SENSE 6 XLAT 8 TX 5 XCS DSP 9 SI0 11 SO0 12 SCK0 13 JX 10 JY 11 IY 8 IX 9 RF PEAK PEAK/ BOTM BOTM OSC VIN 24 33 29 28 CONTROL LOGIC 18 B+ SWITCH Q603, 604 OVER WRITE HEAD B+ OVER WRITE HEAD DRIVE Q601, 602 10 11 HB EFM LOGIC EFM 14 123 EFMO DIN1 33 CK 19 113 FS4 DIGITAL SIGNAL PROCESSOR, EFM/ACIRC ENCODER/DECODER, SHOCK PROOF MEMORY CONTROLLER, ATRAC ENCODER/DECODER, 16M BIT D-RAM IC502 (1/2) DADT, XBCK, LRCK, FS256 DADT XBCK LRCK FS256 42 45 43 46 DIGITAL REC OVER WRITE HEAD DRIVE IC603 ADDT 41 ANALOG REC
A
(Page 25)
HA
B
(Page 25)
78 RFI 74 ASYO 75 ASYI
C
(Page 25)
COSC
SAW. GEN.
CHARGE PUMP
MODE3
RF AMP
C1L 21 VGH 22 C1H 23 MODE1 17 16 MODE1 MODE2
81 FILI FILTER 80 PCO 83 CLTV
OSCO 20 OSCI 19 X501 22.5792MHz
ABCD ADFG FE TE OFTRK
21 42 1 26
4 3 5
14 13 16 11 8 17 32 10 6 7
IX
IY IY IX D C
SRDT SWDT SCLK
MNT2 MNT1 MNT3
DQSY SQSY XINT SENS XLAT TX DIN0
41
MODE2
82 FILO
RESET
D
(Page 25)
20
APC
57 REC WBL SW
PD
LD MON PD S0 PD S1 18 PD-NI
SERIAL INTERFACE
SBUS
XRST
PD-I
SCK
27 MODE1 28 MODE2 29 MODE3
SWDT SCLK
SWDT, SCLK
E
(Page 27)
19
23 24 25
DATA
CLK
102 103 36 38 12 XRST 84 85 86 99 87 96
SSB DATA SSB CLK PD S0 PD S1
SRDT SWDT SCLK
SRDT, SWDT, SCLK
F
(Page 25)
2-AXIS DEVICE
OVER WRITE HEAD UP/DOWM MOTOR DRIVE IC602 BATT B+ DC/DC CONVERTER IC605, Q607 D603 VMC 2 VMAB 13 C2H B+ SWITCH Q605 VC C2L LVDET CHARGE PUMP C1H C1L 5 6 12 11
TRK+
(TRACKING)
106 APCREF FO3 RO3 FO1 RO1 FOCUS COIL DRIVE TRACKING COIL DRIVE FI3 RI3 FI1 RI1
SYSTEM CONTROLLER IC801 (1/3)
(FOCUS)
30 TRK FCS+ FCS 32 7 5
21 22 16 15
PEAK BOTM ABCD 109 TRDR DIGITAL SERVO ADFG SIGNAL FE 111 FFDR PROCESSOR TE IC502 (2/2) 112 FRDR 110 TFDR
VC B+
1
35 SLD MON 1 11 9 FO2 RO2 SLED MOTOR DRIVE FI2 RI2 PWM24 FI4 RI4 14 13 25 23 24 SPINDLE SERVO DRIVE SWITCH IC504, 505 PWMI 3 2 133 SLDU 134 SLDV 141 SLVS 135 SLDW 140 SLCW SLCU 138 SLCV 139 RECP 15 7 WRPWR HD CON 2 31 HD CON 1 30 8 7
IN2 IN1
CONTROL LOGIC
MOTOR DRIVE
OUTB OUTA
14 3
M
M603 OVER WRITE HEAD UP/DOWM
M602 (SLED)
M
26 28
FO4 RO4
SLED VOLTAGE MONITOR IC604 M601 (SPINDLE)
FOCUS/TRACKING COIL DRIVE, SPINDLE/SLED MOTOR DRIVE IC601
IC504 1 7 124 127 128 129 SPVS SPDU SPDV SPDW
49 SPDL START SW
U W V
SPDL PWM
46 CPUI 40 VO 44 CPVI 39 WO 42 CPWI 38 SPINDLE VOLTAGE MONITOR
UO
UI SPINDLE MOTOR DRIVE VI WI
2 1 48
5
6 3
SPCU 130 SPCV 131 SPCW 132
67 24 25 26
SPDL PWM CLV U CLV V CLV W
IC505 2 1 7 5 6 3
BIAS
CPWO CPVO CPUO
· SIGNAL PATH : PLAY (ANALOG OUT) : REC (ANALOG IN) : REC (DIGITAL IN)
34 35 36
OE
17 OE
SPCW
SPCV SPCU
SLCU
SLCV
CLV U CLV V CLV W
G
(Page 27)
05
23
24
MZ-R90/R91
6-2.
BLOCK DIAGRAM A/D, D/A CONVERTER, AUDIO Section
OPTICAL RECEIVER
6-3.
BLOCK DIAGRAM KEY CONTROL/DISPLAY/POWER SUPPLY Section
G
VC B+ DIGITAL REC J301 LINE IN (OPTICAL) B+ SWITCH Q302
(Page 24)
OE VC B+ RF AMP (IC501), DSP (IC502), MOTOR/COIL DRIVE (IC601), OVER WRITE HEAD DRIVE (IC603), SYSTEM CONTROLLER (IC801), REMOTE CONTROL CIRCUIT B+ SYSTEM CONTROLLER IC801 (3/3) S807 SYNCHRO REC ON 1 OFF OFF 73 XHOLD SW HOLD RMC KEY FFCLR SLEEP REG CTL PWM 85 39 40 64 33 37 36 43 34 35 32 VLD B+ LASER APC CIRCUIT B+ S802 OPEN . 60 XTEST VC PWM 66 24 VREG B+ DSP (IC502) B+ (FOR INTERNAL LOGIC) VBAKN 78 38 SYNC REC
POWER CONTROL IC901 VC SWITCHING REGULATOR VCIN
OVER WRITE HEAD DRIVE CIRCUIT B+ D905 31 29 VCON SWITCHING REGULATOR L1 28 SWITCHING REGULATOR Q904 L904
(Page 24)
B
H
(Page 26)
RMC KEY
30
(LINE IN JACK) +2.5V REGULATOR IC304 +2.5V REGULATOR IC305 B+ SWITCH Q305, 306 VR B+ J303 VC B+ LINE AMP IC302 MIC (PLUG IN POWER)
S803 T MARK S804 HOLD
RF1
STEP-UP PRE DRIVER & PWM
PWMVC
16
VSTB
VB VC
56 T.MARK
35
VRDA
38
VRAD
A/D, D/A CONVERTER IC301 (Page 24)
A
ANALOG REC
4
STDO
ADCL HIGH-PASS FILTER AUDIO INTERFACE CONTROLLER DPGA DBB A/D CONVERTER ADCR
47 43
48 42
PGAL PGAR SUB TRACTION
DADT, XBCK, LRCK, FS256 (Page 24)
LIN2 53 LIN1 56 RIN2 52 RIN1 55 LOUT2 37 36 LINE OUT ON/OFF SWITCH Q101, 201 MUTING Q101, 201
S806 (PROTECT DETECT) S901 (BATTERY IN DETECT) S801 (OPEN/CLOSE DETECT)
3
PROTECT
WK DET 83 HALF LOCK SW 84
XWK3 FFCLR SLEEP CLK XWK2 XWK1 XWK4
XRST SYSTEM CONTROL
VG B+ MOTOR/COIL DRIVE (IC601) B+ VG SWVG 19 17
D901
L902
STEP-UP DC/DC CONVERTER
BATT B+ MOTOR/COIL DRIVE (IC601), OVER WRITE HEAD UP/DOWN MOTOR DRIVE (IC602) B+ VR B+ D906 L905 (BATTERY CASE) DRY BATTERY SIZE "AA" (IEC DESIGNATION R6) 1PC. 1.5V
J304 i/LINE OUT
14 XGUN ON
11 10
VLD VREG REGULATOR VR 12 25 VROUT RF1 + VC STEP-UP PRE DRIVER & PWM SWITCHING REGULATOR L2 26
C
DADT XBCK LRCK
6 3 2
STDI BCLK LRCK
LOUT1 D/A CONVERTER ROUT1
33 32
34 31
OPGAL OPGAR LOW-PASS FILTER
50 OPEN CLOSW SW BP801 (TEST)
ROUT2
LINE AMP IC303
+ +
BEEP TONE BUFFER Q301, 303 VC B+ RVCC DTCK CDWM 2V CDWM DATA KEY-R RGND
CHARGE RECHARGEABLE BATTERY (NICKEL-METAL) NH-14WM 1.2V
FS256 SRDT, SWDT, SCLK
1
MCLK
CLOCK DIVIDER
RF2
(Page 24)
F
SWDT SCLK SRDT
CDTI 18 CCLK 16 CDTO 17 61 XRST
CONTROL REGISTER INTERFACE
MUTING CONTROL SWITCH Q308
LINE OUT ON/OFF CONTROL SWITCH Q307, 309
E
(Page 24)
SWDT, SCLK VRM PWM 65 23 RF2 +
D907
VR
VB SWITCH & LCD MODULE UNIT SERON 58 XRST 43 15 SERON 40 POWER OFF RESET SWITCH Q808 22 LCD RST 21 LCD STB 20 XCS LCD XCHG 59 47 CHGB BATT B+ VC B+ XRST RESET SIGNAL GENEARTOR
(Page 24)
XCS
D
RESET
+ +
RF5 INM5
4 3
CHARGE ON SWITCH Q901 (1/2), 905 CHARGE CONTROL Q906
PD 62 RMC KEY BEEP XHP STBY XOPT CONT OPT DET XJACK DET XMIC DET 18 23 116 113 114 115
LCD LCD DRIVER
SDO SCK RST STB CS
SWDT SCLK
15
RS
2
110
XCS ADA
111
XPD ADA
117
MUTE
H
(Page 27)
CHARGE CONTROL Q901 (2/2)
CHGSW
48
SYSTEM CONTROLLER IC801 (2/3)
TSB CLKCTL TSB SLV CTL
REC LED REC
69 REC LED
CHG MON 81 VR B+
8
RF3
+
INP3
7
46
CHG MON COMPARATOR & BUFFER
VB BATM
44 5
RMC DTCK 19 TSB SLV ON 34 CD TEXT COPY DEETCT Q801
PAUSE PAUSE
TSB EDGE
SO1
SI1
4
PAUSE KEY
VRM MON 89
DCIN
1
+2.5V REGULATOR IC902
XCS NV
CS RTC
EXTAL
SCK1
XTAL
LINE FILTER LF901
J901 DC IN 3V
!
119
10
46
45
101
41
72 70
48
71
REC
REC
88 REC KEY GND SW 42 GROUND LINE SWITCHING Q902
SWDT
SWDT
SRDT
SRDT
SCLK
SCLK
X801 16.9344MHz REAL TIME CLOCK IC804
LEVEL SHIFT Q802, 803
SET KEY 1
+
D804 D801
4
DO
3
DI
2
SK
1
XCS
3
SDO
4
SDI
2
SCK2
7
CS-RTC
LEVEL SHIFT Q804
LEVEL SHIFT Q805 LEVEL SHIFT Q806
86 SET KEY 1 87 SET KEY 2
SET KEY 2
OSCOUT
EEPROM IC802
OSCIN
VDD
2
DC/DC CONVERTER IC803, Q809
BATT B+ TSB CLOCK SWITCHING Q807
XWK1
BACK-UP BATT B+ 8
9 05
· SIGNAL PATH : PLAY (ANALOG OUT) : REC (ANALOG IN) : REC (DIGITAL IN)
05
X802 32.768kHz
BAT1 LITHIUM BATTERY (FOR BACK UP)
B UP BATT
BACK UP BATT B+
25
26
27
28
MZ-R90/R91
6-4. PRINTED WIRING BOARD
Ver 1.2 2000. 02
· Semiconductor Location
Ref. No. D301 D302 D303 D304 D501 D600 D601 D602 D603 D801 D802 D803 D804 D901 D902 D903 D905 D906 D907 IC301 IC302 IC303 IC304 IC305 IC501 IC502 IC504 IC505 IC601 IC602 IC603 IC604 IC605 IC801 IC802 IC803 IC804 IC901 IC902 Q101 Q102 Q201 Q202 Q301 Q302 Q303 Q305 Q306 Q307 Q308 Q309 Q501 Q601 Q602 Q603 Q604 Q605 Q607 Q801 Q802 Q803 Q804 Q805 Q806 Q807 Q809 Q901 Q902 Q904 Q905 Q906 Q1001 Location B-10 B-9 C-4 B-10 G-10 F-6 F-9 G-6 H-9 E-12 F-12 D-11 F-11 D-7 C-9 E-9 C-11 C-11 D-11 C-12 C-13 B-11 B-4 D-13 F-10 G-12 E-11 E-12 E-12 H-9 G-9 F-12 G-9 H-11 H-10 E-11 G-11 D-10 C-10 B-9 B-11 C-10 B-11 B-10 C-13 B-10 C-11 H-9 C-10 B-11 B-10 E-11 F-9 F-9 G-7 H-9 G-9 H-9 G-13 F-13 F-13 F-13 F-13 F-12 F-13 D-11 C-6 D-9 C-11 C-6 C-10 E-11
Note on Schematic Diagram: · All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. · All resistors are in and 1/4 W or less unless otherwise specified. · % : indicates tolerance. f · : internal component. · C : panel designation. Note: The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. · A : B+ Line. · Power voltage is dc 3 V and fed with regulated dc power supply from external power voltage jack. · Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : PLAYBACK ( ) : RECORD : Impossible to measure · Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. · Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. · Circled numbers refer to waveforms. · Signal path. E : PLAYBACK (ANALOG OUT) j : PLAYBACK (ANALOG IN) l : RECORD (DEGITAL IN) · Abbreviation CND : Canadian model FR : French model HK : Hong Kong model JEW : Tourist model
* IC502 and IC801 are not replaceable
· The voltage and waveform of CSP (chip size package) cannot be measured, because its lead layout is different form that of conventional IC.
Note on Printed Wiring Board: · X : parts extracted from the component side. · Y : parts extracted from the conductor side. · x : parts mounted on the conductor side. z · : Through hole. · b : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.) Caution: Pattern face side: (Conductor Side) Parts face side: (Component Side)
Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.
· Main board is four-layer printed board. However, the patterns of layers 2 and 3 have not been included in this diagrams.
* IC502 and IC801 are not replaceable
· Lead Layouts
surface
Lead layout of conventional IC
CSP (chip size package)
29
30
31
32
6-5.
SCHEMATIC DIAGRAM · See page 38 for Waveforms.
· See page 41 for IC Block Diagrams.
MZ-R90/R91
33
34
35
36
37
· Waveforms
1 IC301 1 (MCLK), IC502 rh (FS256) 1 V/DIV, 50 ns/DIV 6 IC501 ed (RF), IC502 uk (RFI) (PLAY Mode) qa IC502
· IC Block Diagrams IC301 AK4517BVQ-L
CMODE
IC501
SN761056ADBT
2.7 Vp-p
LIN1 RIN1 TST1 LIN2 RIN2
2.8 Vp-p
PD RST SSB NC NC NC
NC
1.3 Vp-p
TST2 LIN3 RIN3
Approx. 1.4 Vp-p
203 mVp-p
114 mVp-p
44 ADIPIN TE 1 REXT 2 ADIP TEMP TE ADIP TON BOTM TON PEAK AW+DW CSL TON NPP I+J A+B+C+D DWBPF DW AWBPF MIJ MALFA D-C A-C VREF075 CSLO AW PK/BTM TWPP 43 S-MON 42 FE
64
63
62 61 60 59 58 57
56 55 54 53 52 51 50 49
88.5 ns
2 IC301 2 (LRCK), IC502 rd (LRCK) 1 V/DIV, 10 µs/DIV
7 IC501 rs (FE), IC502 ij (FE) (PLAY Mode) 200 mV/DIV, 1 µs/DIV
11.4 µs
11.5 µs qh IC603 qk (COSC) (REC Mode) 400 mV/DIV, 5 µs/DIV
11.3 µs wa IC803 5 (LX) 50 mV/DIV, 5 µs/DIV
8.6 µs
wh Q904 (Drain) 1 V/DIV, 5 µs/DIV
MCLK 1
CLOCK DIVIDER
WPPLPF 3
48
IPGAL
VREF11 4
S-MONITOR
47 ADCL LRCK 2 BCLK 3 46 VCML AUDIO INTERFACE CONTROLLER A/D CONVERTER HPF 45 NC 44 VCMR 43 ADCR 42 IPGAR 41 NC 40 NC NC 9 39 NC 38 VRAD
D-C 7 TPP/WPP ABCD AMP C 5 D 6 TRACKING ERROR AMP
2.8 Vp-p
Approx. 416 mVp-p
qs IC502
SDTO 4 NC 5 SDTI 6 DIF0 7 DIF1 8
1.6 Vp-p
112 mVp-p
3.5 Vp-p
41 ABCD
22.7 µs 2.8 Vp-p 3 IC301 3 (BCLK), IC502 rg (XBCK) 400 mV/DIV, 200 ns/DIV 8 IC502 w; (OSCO) 400 mV/DIV, 20 ns/DIV
5.7 µs qj IC603 wa, wd (CIH, CIL) (REC Mode) 2 V/DIV, 2 µs/DIV
7.4 µs
7.6 µs
TST3 10 NC 11
ws IC804 8 (OSCOUT) 500 mV/DIV, 20 µs/DIV
DCODE0 12 DCODE1 13 DCODE2 14 CS (SCK) 15 CONTROL REGISTER INTERFACE DPGA DBB D/A CONVERTER
37 LOUT2 36 ROUT2 35 VRDA 34 OPGAL 33 LOUT1
IY IX JX JY 8 9 10 11 FOCUS ERROR AMP RF AMP 40 AVCC 39 38 37 36 35 OFC-C1 OFC-C2 PS LP EQ
11.1 ms
1.2 Vp-p
1.3 Vp-p
4.8 Vp-p
1.2 Vp-p
CCLK (SSI) 16
34 AGND
354 ns
4 IC501 1 (TE), IC502 oh (TE) (PLAY Mode) 200 mV/DIV, 1 µs/DIV
44.3 ns
9 IC502
qd IC502
17
18
19 20 21 22 23 24 25 26 27 28 29 30
31
32
33 RF A 12 A-C 13 B 14 TON-C 15 T-ON 32 CCSL2 31 VC 30 VREF075 29 PEAK PEAK/BOTM CDN 17 28 BOTM AUTOMATIC POWER CONTRL 27 DGND 26 OFTRK 25 XRST 24 SCK 23 SBUS
CDTI (SSO)
OPGAR
VCOM
DGND
AGND
5.7 µs
30.5 µs
ROUT1
CDTO
DZF
NC
NC
NC
VD
NC
NC
VB
VA
POWER SUPPLY
qk IC801 rg (XTAL) 1 V/DIV, 20 ns/DIV
wd IC901 qh (PWMVC), Q904 (Gate) 5 V/DIV, 2 µs/DIV
CIG 16
IC304, 305
2.8 Vp-p Approx. 396 mVp-p
2.7 Vp-p
2.2 Vp-p
RN5RZ25AA-TR
PD-NI 18 PD-I 19 PD-O 20
8.8 Vp-p
GND 1 VDD 2 + VREF 5 CE
ADFG 21 DVDD 22 SERIAL INTERFACE
5.7 µs
20 ms
59.1 ns
7.8 µs
5 IC501 8, 9, 0, qa (IY, IX, JX,JY) (PLAY Mode) 200 mV/DIV, 500 ns/DIV
0 IC502
CURRENT LIMIT VOUT 3 4 NC
qf IC502
ql IC801 yg (VRM PWM) 100 mV/DIV, 5 µs/DIV
wf IC901 rd (CLK) 1 V/DIV, 2 µs/DIV
Approx. 540 mVp-p
508 mVp-p
2.8 Vp-p
2.7 Vp-p
2.8 Vp-p
11.3 µs
5.3 µs
7.6 µs
11.8 ms
38
39
40
41
42
IC601
MPC17A56FTA
GNDUV
VMVW
GNDW
CPWI
38
CPUI
CPVI
48 VC VC VG
47
46
45
44
43
42
41
40
39
37
COM
+
VMU
WO
UO
VO
WI
36 CPUO
VI 1 UI 2 PWM 3
3PHASE CONTROL
PRE DRIVER
+ +
35 CPVO
34 CPWO
VM1 4 VG VC VC VC VC VG 33 VM3
RO1 5 PGND1 6 FO1 7
PRE DRIVER
H-BRIDGE CONTROL
H-BRIDGE CONTROL
PRE DRIVER
32 RO3 31 PGND3 30 FO3
VM12 8
VG
VC
VC VC BIAS ROE
VC
VC
VG
29 VM34 H-BRIDGE CONTROL PRE DRIVER 28 RO4 27 PGND4
RO2 9 PGND2 10 FO2 11
PRE DRIVER
H-BRIDGE CONTROL VC VG
VM2 12
26 FO4 25 PWM24 13 14 15 16 17 18 19 20 21 22 23 24
GND
RI2 FI2
RI1 FI1 OE
VG
FI3 RI3
IC602
MPC17A17XDTBR2
VC 1 VMC 2 OUTA 3 16 OUTC 15 GND CHARGE PUMP LEVEL SHIFTER PREDRIVER 14 OUTB 13 VMAB
VG 4 C2H 5 C2L 6
FI4 RI4
VC
12 C1H 11 C1L
LVDET CONTROL LOGIC 10 EN2 9 EN1
IN1 7 IN2 8
43
IC603
MPC18A20MTAEL
PGNDLG MODE 1 MODE 2
30
29
28
27
26
25
24
23
22
21
20 CLK
19
18
COSC
VGH
VCC
DTC
C1H
C1L
VIN
NC
SS
VB
CK
RF
17
16
SAW CHARGE PUMP PRE DRIVER OSC
CONTROL LOGIC
EN SAW GEN + CLK SAW VREF COMP PRE DRIVER
ENB
COMP
EFM LOGIC BIAS
OP
VREF
1
INM
2
ERRID
3
ERRIV
4
GND
5
VSET
6
VG
7
VGI
8
PGNDG
9
PGNDB
10
HB
11
HA
12
PGNDA
13
GND
14
EFM
15
VERF
IC605
XC6367B103MR
IC803
XC6383C301MR
CHIP ENABLE VDD
SLOW START REFERENCE VOLTAGE VDD VOUT 1 PHASE COMPARATOR + PWM/PFM CONTROL OSC 100kHz BUFFER 5 EXT VLX LIMITER
CE 1
VREF VOUT 2
VLX LIMITER BUFFER
5 LX
+ NC 3 +
2STEP PFM CONTROL OSC 100/180kHz 4 VSS
VDD
2
4
GND
CE
3
CHIP ENABLE
IC902
GND 1 VDD 2
RN5RG25AA-TR
5 CE VREF
+
4 EXT
VOUT 3
44
IC804
RV5C348A-E2
32K OUT
1
32KHz OUTPUT CONTROL
ALARM W REGISTER (WEEK,MIN,HOUR) ALARM D REGISTER (MIN,HOUR)
10 VDD COMPARATOR W VOLTAGE DETECT
COMPARATOR D 9 OSC IN
TIME COUNTER (SEC,MIN,HOUR,WEEK,DAY,MONTH,YEAR) SCLK 2 I/O CONTROL ADDRESS REGISTER ADDRESS DECORDER
DIV
DIVIDER CORRECTION
OSC 8 OSC OUT
SO SI
3 4
OSC DETECT SHIFT REGISTER INTERRUPT CONTROL
7 CE
6 /INTR
VSS
5
IC901
MPC18A31FTA
CHGMON
RSTREF
CHGSW
48 DCIN DCIN 1 VB DCIN
47
46
45
44
43
42
41
40
39
38
37
VC RS 2 INM5 3 ++ DCIN VC + RF5 4 BANDGAP REFERENCE + + VC
FFCLR
XRST SYSTEM CONTROL VC VB SAW OSC2 VC 31 VCIN 36 35 34 33 32 SLEEP XWK1 XWK2 XWK3 XWK4
FFCLR
VRMC
CHGB
CRST
XRST
VBTB
VREF
CLK
VB
BATM 5 INM3 6 INP3 7 RF3 8 +
VC VREG PWM RF1
VG
30 VC 29 VCON
STEP-UP PRE DRIVER
28 L1 27 PGND
FB 9 VREG 10 + RF4 STEP-UP DC/DC CONVERTER PWM RF2 + +
VR
VC VC VG
VLD 11 VR 12
STEP-UP PRE DRIVER
26 L2 25 VROUT
PWMVC
SERON
SWVG GND
INM4
INM2
INM1
RF4
RF2
DTC
45
RF1
VG
+ 13 14 15 16 17 18 19 20 21 22
23
24
6-6. IC PIN FUNCTION DESCRIPTION
· MAIN BOARD IC501 SN761056ADBT (RF AMP, FOCUS/TRACKING ERROR AMP) Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 Pin Name TE REXT WPPLPF VREF11 C D D-C IY IX JX JY A A-C B TON-C CIG CDN PD-NI PD-I PD-O ADFG DVDD SBUS SCK XRST OFTRK DGND BOTM PEAK VREF075 VC CCSL2 RF OUT AGND EQ LP PS OFC-2 OFC-1 AVCC ABCD FE S-MON ADIP-IN I/O O -- -- O I I I I I I I I I I -- -- -- I I O O -- I/O I I I -- O O -- O -- O -- -- -- -- -- -- -- O O O I Description Tracking error signal output to the CXD2660GA (IC502) Connected to the external resistor for the ADIP amplifier control Connected to the external capacitor for low-pass filter of the TPP/WPP Reference voltage output terminal (+1.1V) Signal input from the optical pick-up detector (C) Signal input from the optical pick-up detector (D) Signal input from the optical pick-up detector (D) (AC input) I-V converted RF signal IY input from the optical pick-up block detector I-V converted RF signal IX input from the optical pick-up block detector I-V converted RF signal JX input from the optical pick-up block detector I-V converted RF signal JY input from the optical pick-up block detector Signal input from the optical pick-up detector (A) Signal input from the optical pick-up detector (A) (AC input) Signal input from the optical pick-up detector (B) Connected to the external capacitor for the TON hold Connected to the external capacitor for low-pass filter of the NPP divider denominator Connected to the external capacitor for low-pass filter of the CSL divider denominator Light amount monitor input terminal (non-invert input) Light amount monitor input terminal (invert input) Light amount monitor output terminal ADIP duplex FM signal (22.05 kHz ± 1 kHz) output to the CXD2660GA (IC502) Power supply terminal (+2.4V) (digital system) Two-way SSB serial data bus with the system controller (IC801) SSB serial clock signal input from the system controller (IC801) Reset signal input from the system controller (IC801) "L": reset Off track signal input from the CXD2660GA (IC502) Ground terminal (digital system) Light amount signal (RF/ABCD) bottom hold output to the CXD2660GA (IC502) Light amount signal (RF/ABCD) peak hold output to the CXD2660GA (IC502) Connected to the external capacitor for the internal reference voltage Middle point voltage (+1.2V) generation output terminal Connected to the external capacitor for low-pass filter of the TPP/WPP Playback EFM RF signal output to the CXD2660GA (IC502) Ground terminal (analog system) Connected to the external capacitor for the RF equalizer Connected to the external capacitor for the RF equalizer Connected to the external capacitor for the RF equalizer Connected to the external capacitor for the RF AC coupling Connected to the external capacitor for the RF AC coupling Power supply terminal (+2.4V) (analog system) Light amount signal (ABCD) output to the CXD2660GA (IC502) Focus error signal output to the CXD2660GA (IC502) Servo signal monitor output to the system controller (IC801) ADIP duplex FM signal (22.05 kHz ± 1 kHz) input terminal Not used
46
· MAIN BOARD IC502 CXD2660GA (DIGITAL SIGNAL PROCESSOR, DIGITAL SERVO SIGNAL PROCESSOR, EFM/ACIRC ENCODER/DECODER, SHOCK PROOF MEMORY CONTROLLER, ATRAC ENCODER/DECODER, 16M BIT D-RAM) Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 to 29 30 31 32 33 34 35 36, 37 38 39 40 41 42 43 44 45 Pin Name VDC0 MNT0 MNT1 MNT2 MNT3 SWDT SCLK XLAT VSC0 SRDT SENS XRST SQSY DQSY (MTFLGL) RECP XINT TX VDIO0 OSCI OSCO VSIO0 NC VSC1 XTSL XCS_DSP DIN1 DOUT DT72 VDC1, VDC2 DATAI LRCKI XBCKI ADDT DADT LRCK VSC2 XBCK I/O -- I/O O O O I I (S) I (S) -- O (3) O (3) I (S) O O I O I -- I O -- -- -- I I I O O -- I I I I O O -- O Not used (open) Recording shock detect signal output to the system controller (IC801) Off track signal output to the SN761056ADBT (IC501) and system controller (IC801) Focus OK signal output to the system controller (IC801) "H": is output when focus is on ("L": NG) Serial data input from the system controller (IC801) Serial clock signal input from the system controller (IC801) Serial data latch pulse input from the system controller (IC801) Ground terminal (for internal logic) Serial data output to the system controller (IC801) Internal status (SENSE) output to the system controller (IC801) Reset signal input from the system controller (IC801) "L": reset Subcode Q sync (SCOR) output the system controller (IC801) "L" is output every 13.3 msec Almost all, "H" is output Digital In U-bit CD format subcode Q sync (SCOR) output to the system controller (IC801) "L" is output every 13.3 msec Almost all, "H" is output Laser power selection signal input from the system controller (IC801) "L": playback mode, "H": recording mode Interrupt status output to the system controller (IC801) Recording data output enable signal input from the system controller (IC801) Writing data transmission timing input Power supply terminal (+2.4V) (for I/O) System clock (512Fs=22.5792 MHz) input terminal System clock (512Fs=22.5792 MHz) output terminal Ground terminal (for I/O) Not used (open) Ground terminal (for internal logic) Input terminal for the system clock frequency setting "L": 45.1584 MHz, "H": 22.5792 MHz (fixed at "H" in this set) Chip select signal input from the system controller (IC801) Digital audio signal input terminal when recording mode Digital audio signal output terminal when playback mode Not used (open) Not used (open) Power supply terminal (+1.8V) (for internal logic) Serial data input terminal Not used (fixed at "L") L/R sampling clock signal (44.1 kHz) input terminal "L": Rch, "H": Lch Not used (fixed at "L") Serial input/output data bit clock signal (2.8224 MHz) input terminal Not used (fixed at "L") Recording data signal input from the A/D, D/A converter (IC301) Playback data signal output to the A/D, D/A converter (IC301) L/R sampling clock signal (44.1 kHz) output to the A/D, D/A converter (IC301) Ground terminal (for internal logic) Serial input/output data bit clock signal (2.8224 MHz) out put to the A/D, D/A converter (IC301) Description Power supply terminal (+1.8V) (for internal logic)
* I (S) stands for schmitt input, I (A) for analog input, O (3) for 3-state output, and O (A) for analog output in the column I/O
47
Pin No. 46 47 to 52 53 54 55 to 59 60 61 62 63 64 to 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102
Pin Name FS256 A03, A04, A02, A05, A01, A06 VDIO1 VSIO1 A00, A07, A10. A08, A09 XRAS IXOE IXWE XCAS D1, D2, D0, D3 VDC3 VSC3 A11 XOE XWE MVCI ASYO ASYI AVD1 BIAS RFI AVS1 PCO FILI FILO CLTV PEAK BOTM ABCD FE AUX1 VC ADIO ADRT AVD2 AVS2 ADRB SE TE DCHG APC ADFG VDIO2 VSIO2 F0CNT
I/O O O -- -- O O O O O I/O -- -- O O O I (S) I (A) -- I (A) I (A) -- O (3) I (A) I (A) I (A) I (A) I (A) I (A) I (A) I (A) I (A) -- -- I (A) I (A) I (A) I (A) I (A) I (A) -- -- O
Description Clock signal (11.2896 MHz) output to the A/D, D/A converter (IC301) (X' tal system) Address signal output to the external D-RAM Power supply terminal (+2.4V) (for I/O) Ground terminal (for I/O) Address signal output to the external D-RAM Not used (open) Not used (open) Not used (open) Not used (open) Not used (open) Not used (open)
Row address strobe signal output to the external D-RAM "L" active Output enable signal output terminal for internal D-RAM "L" active
Data write enable signal output terminal for internal D-RAM "L" active Column address strobe signal output to the external D-RAM "L" active Two-way data bus with the external D-RAM Ground terminal (for internal logic) Address signal output to the external D-RAM Not used (open) Output enable signal output to the external D-RAM "L" active Digital in PLL oscillation input from the external VCO Not used (open) Power supply terminal (+1.8V) (for internal logic)
Not used (open) Not used (open)
Data write enable signal output to the external D-RAM "L" active
Not used (fixed at "L")
O (A) Playback EFM full-swing output terminal Playback EFM asymmetry comparator voltage input terminal Power supply terminal (+2.4V) (analog system) Playback EFM asymmetry circuit constant current input terminal Playback EFM RF signal input from the SN761056ADBT (IC501) Ground terminal (analog system) Phase comparison output for master clock of the recording/playback EFM master PLL Filter input for master clock of the recording/playback EFM master PLL Internal VCO control voltage input of the recording/playback EFM master PLL Light amount signal (RF/ABCD) peak hold input from the SN761056ADBT (IC501) Light amount signal (RF/ABCD) bottom hold input from the SN761056ADBT (IC501) Light amount signal (ABCD) input from the SN761056ADBT (IC501) Focus error signal input from the SN761056ADBT (IC501) Auxiliary signal (I3 signal/temperature signal) input terminal Middle point voltage (+1.2V) input terminal Not used (open) A/D converter operational range upper limit voltage input terminal (fixed at "H" in this set) Power supply terminal (+2.4V) (analog system) Ground terminal (analog system) A/D converter operational range lower limit voltage input terminal (fixed at "L" in this set) Sled error signal input terminal Not used (fixed at "L") Tracking error signal input from the SN761056ADBT (IC501) Connected to the +2.4V power supply Error signal input for the laser automatic power control Power supply terminal (+2.4V) (for I/O) Ground terminal (for I/O) Filter f0 control signal output terminal Not used (open) Not used (fixed at "H") ADIP duplex FM s