Panasonic SA-AK78 User manual

■Amplifier Section
Front speaker power output
Power output
PMPO 3400 W
RMS power output
THD 10%, both channels driven
Total 200 W per channel (6Ω)
LOW 100 Hz 120 W per channel (6Ω)
MID 1 kHz 40 W per channel (6Ω)
HIGH 10 kHz 40 W per channel (6Ω)
Power output in
Dolby Pro Logic mode
PMPO Total 4000 W
RMS power output
THD 10%
Total 500 W
Front LOW 100 Hz 120 W per channel (6Ω)
Front HIGH 1 kHz 40 W per channel (6Ω)
Center 1 kHz 90 W per channel (8Ω)
Surround 1 kHz 45 W per channel (8Ω)
Input sensitivity
AUX 1, AUX 2 250 mV
MIC 0.7 mV
© 2000 Matsushita Electronics (S) Pte. Ltd. All rights
reserved. Unauthorized copying and distribution is a
violation of law.
SA-AK78
Colour
(S)... Silver Type
Area
(GC)... Asia, Latin America, Africa and Middle Near
East
TAPE SECTION
AR2 MECHANISM SERIES
CD SECTION
RAE0152Z-3 TRAVERSE DECK SERIES
Input impedance
AUX 1, AUX 2 10 kΩ
MIC 600 Ω
■FM Tuner Section
Frequency range 87.50-108.00 MHz (50 kHz step)
Sensitivity 1.8µV (IHF)
S/N 26 dB 1.5µV
Antenna terminal(s) 75 Ωunbalanced
■AM Tuner Section
Frequency range 522-1629 kHz (9kHz step)
520-1630 kHz (10kHz step)
Sensitivity
S/N 20 dB 500 µV/m
■Cassette Deck Section
Track system 4 track, 2 channel
Heads
Record/playback Solid permalloy head
Erasure Double gap ferrite head
Motor DC servo motor
Recording system AC bias 100kHz
Erasing system AC erase 100kHz
Tape speed 4.8 cm/s
CD Stereo System
Specification
ORDER NO. MD0005090C3
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Overall frequency reponse (+3, -6
dB at DECK OUT)
NORMAL (TYPE I) 35- Hz - 14 kHz
HIGH (TYPE II) 35- Hz - 14 kHz
S/N 50dB (A weighted)
Wow and flutter 0.18 % (WRMS)
Fast forward and rewind time Approx. 120 seconds with C-60
cassette tape
■CD Section
Sampling frequency 44.1kHz
Decoding 16 bit linear
Frequency response 20 Hz - 20 kHz (+1, -2 dB)
Wow and flutter Below measurable limit
Digit filter 8fs
D/A converter MASH (1 bit DAC)
■General
1 Before Use 2
2 Before Repair and Adjustment 2
3 Protection Circuitry 2
4 Accessories 3
5 Handling Precautions For Traverse Deck 4
6 Precaution of Laser Diode 4
7 Operation Procedures 6
8 Self-Diagnostic Display Function 8
9 Description of Error Code 9
Power supply AC 110V/127V/220V/230-240V,
50/60Hz
Power consumption 188 W
Standby
ECO 0.8 W
NORMAL 12 W
Dimensions (WxHxD) 270 x 330 x 339 mm
Weight 8.8 kg
Notes :
1. Specifications are subject to change without notices.
Weight and dimensions are approximate.
2. Total harmonic distortion is measured by the digital spectrum
analyzer.
■System: SC-AK78 (GC) Music Center : SA-AK78 (GC)
Front Speaker : SB-AK78 (GC)
Center Speaker : SB-PC70 (GC)
Surround Speaker : SB-PS70 (GC)
10 CD Test Mode Function 10
11 Measurements and Adjustments 11
12 Terminal Function of IC’s 13
13 Block Diagram 16
14 Schematic Diagram 26
15 Printed Circuit Board 47
16 Wiring Connection Diagram 57
17 Troubleshooting Guide 59
18 Parts Location and Replacement Parts List 60
CONTENTS
Page Page
1 Before Use
Be sure to disconnect the mains cord before adjusting the voltage selector. Use a minus (-) screwdriver to set the voltage selector
(on the rear panel) to the voltage setting for the area in which the unit will be used. (If the power supply in your area is 117V or
120V, set to the “127V” position.) Note that this unit will be seriously damaged if this setting is not made correctly. (There is no
voltage selector for some countries; the correct voltage is already set.)
2 Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors C566 - C569, C591 through a 10Ω, 5W resistor to ground.
DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.
After repairs are completed, restore power gradually using a variac, to avoid overcurrent.
••Current consumption at AC 110V, 127V, 220V, 230-240V, 50 Hz in NO SIGNAL mode should be ~620mA, ~590mA, ~330mA
and ~300mA respectively.
3 Protection Circuitry
The protection circuitry may have operated if either of the following conditions are noticed:
2
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4 Accessories
Remote Control
Transmitter
AC power supply cord
FM indoor antenna
AM Loop antenna
Power plug
adaptor
••No sound is heard when the power is turned on.
••Sound stops during a performance.
The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are
"shorted", or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
If this occurs, follow the procedure outlines below:
1.Turn off the power.
2.Determine the cause of the problem and correct it.
3.Turn on the power once again after one minute.
Note:
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
Note : Refer to Packing Materials & Accessories for part number.
3
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The laser diode in the traverse deck (optical pickup) may break
down due to potential difference caused by static electricity of
clothes or human body.
So, be careful of electrostatic breakdown during repair of the
traverse deck (optical pickup).
●Handling of traverse deck (optical pickup)
1.Do not subject the traverse deck (optical pickup) to
static electricity as it is extremely sensitive to electrical
shock.
2.The short land between the No.4 (LD) and No.5 (GND)
pins on the flexible board (FFC) is shorted with a solder
build-up to prevent damage to the laser diode.
To connect to the PC board, be sure to open by
removing the solder build-up, and finish the work
quickly.
3.Take care not to apply excessive stress to the flexible
board (FFC board).
4.Do not turn the variable resistor (laser power
adjustment). It has already been adjusted.
●Grounding for electrostatic breakdown prevention
1.Human body grounding
Use the anti-static wrist strap to discharge the static
electricity from your body.
2.Work table grounding
Put a conductive material (sheet) or steel sheet on the
area where the traverse deck (optical pickup) is placed,
and ground the sheet.
Caution :
The static electricity of your clothes will not be grounded
through the wrist strap. So, take care not to let your
clothes touch the traverse deck (optical pickup).
Caution when Replacing the Traverse Deck :
The traverse deck has a short point shorted with solder
to protect the laser diode against electrostatics
breakdown. Be sure to remove the solder from the short
point before making connections.
5 Handling Precautions For Traverse Deck
6 Precaution of Laser Diode
Caution :
This product utilizes a laser diode with the unit turned "ON", invisible laser radiation is emitted from the pick up lens.
Wavelength : 780 nm
Maximum output radiation power from pick up : 100 µW/VDE
Laser radiation from pick up unit is safety level, but be sure the followings:
1.Do not disassemble the optical pick up unit, since radiation from exposed laser diode is dangerous.
2.Do not adjust the variable resistor on the pick up unit. It was already adjusted.
3.Do not look at the focus lens using optical instruments.
4.Recommend not to look at pick up lens for a long time.
ACHTUNG :
Dieses Produkt enthält eine Laserdiode. Im eingeschalteten Zustand wird unsichtbare Laserstrahlung von der Lasereinheit
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■Use of Caution Labels
abgestrahlt.
Wellenlänge : 780nm
Maximale Strahlungsleistung der Lasereinheit :100W/VDE
Die Strahlung an der Lasereinheit ist ungefährlich, wenn folgende Punkte beachtet werden:
1.Die Lasereinheit nicht zerlegen, da die Strahlung an der freigelegten Laserdiode gefährlich ist.
2.Den werkseitig justierten Einstellregler der Lasereinhit nicht verstellen.
3.Nicht mit optischen Instrumenten in die Fokussierlinse blicken.
4.Nicht über längere Zeit in die Fokussierlinse blicken.
ADVARSEL: I dette a apparat anvendes laser.
CAUTION!
THIS PRODUCT UTILIZES A LASER.
USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT
IN HAZARDOUS RADIATION EXPOSURE.
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8.7. Power Amplifier Failure (F61)
8 Self-Diagnostic Display Function
8.1. Self-diagnostic display
This unit is equipped with a self-diagnostic display function which, if a problem occurs, will display an error code corresponding to
the problem.
Use this function when performing maintenance on the unit.
8.2. How to enter the Self-Diagnostic Function
1.Turn the unit on with no cassette in the deck. (Select the tape function)
2.Press and hold the “STOP/TUNE MODE” button for at least 2 seconds.
3.While pressing the “STOP/TUNE MODE” button, press “FF/MEMORY” button for at least 2 seconds.
4.“T” will appear on the FL display. (unit is in the Self-Dianostic Function)
8.3. Cassette Mechanism Test (For error code H01, H02, H03, F01, F02)
1.Press “TAPE, DECK 1/2” to select Deck 2.
2.Load a cassette tape with the erasure prevention tab, remove from left side only and close the cassette holder.
3.Press “FAST FORWARD MEMORY/NEXT” (Tape will be stop after 2 seconds)
4.Load a cassette tape with the erasure prevention tab, remove from right side only and close the cassette holder.
5.Press “REVERSE FM MODE/BP/PREV” (Tape will be stop after 2 seconds)
6.Load a pre-recorded tape with both side record tabs intact and close the cassette holder.
7.Press “PLAY TUNE/TIME ADJ SELECT” (After TPS function, tape will stop automatically)
8.Press “REC/STOP” (Tape will not move)
9.Press “STOP TUNE MODE” to indicate Error code.
••If several problem exist, error code will change each time when “■TUNE MODE/PBC” is pressed.
(e.g. H01 →H03 →F01 .....etc.)
10.Press “TAPE, DECK 1/2” to select Deck 1.
11.Repeat step 2 to 9 to test Deck 1. (Tape Deck 1 will not check H02 because of no recording function)
8.4. CD Mechanism Test (F15, F26, F16, F17, F27, F28, F29, H15, F75)
1.Press “CD”.
2.Press “CD MANAGER”.
3.Press “■TUNE MODE” to indicate Error Code.
••If several problem exist, error code will change each time when “■STOP TUNE MODE” is pressed. (e.g. F15 →F26 →F16
..... etc.)
8.5. To clear all Error code
1.Press “STOP TUNE MODE/PBC” button for 5 seconds.
2.FL indicator shows “CLEAR” for 1 second and change to “T”.
8.6. How to get out from Self-Diagnostic function
1.Press “Power” button OFF.
1.When power amplifier fail, F61 will indicate automatically.
8
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9 Description of Error Code
9.1. Error detection for Cassette Mechanism block
No. Error Error
Display Problem condition
1 MODE SW
detection error H01 Faulty operation of cassette mechanism. Faulty contact or short-circuit of mechanism mode switch (S951, S971).
2REC INH SW
detection error H02 Recording not possible. Faulty contact or short-circuit of REC INH switch (S974, S975).
3HALF SW
detection error H03 Playback cannot perform. Faulty contact or short-circuit of HALF siwtch (S952, S972).
4Reel Pulse
detection error F01 The tape advances slightly and then stops. Faulty reel pulse, faulty hole detect IC (IC951, IC971).
5TPS abnormal F02 Cassette deck will not perform TPS function.
Faulty playback EQ/recording amplifier IC (IC101).
9.2. Error detection for CD/Changer block
No. Error Error
Display Problem condition
1REST SW detection error F15 CD does not function.
This error occurs when the Optical Pick Up REST SW (S701) is not
detected within the specified time (about 8 seconds)
2CD tray opens automatically F16 CLAMP switch (S4) NG (Check & Replace)
3Does not startup when [PLAY]
button is pressed F17 BOTTOM switch (S5) NG (Check & Replace)
4Transmission error between CD
servo LSI and micon F26 CD does not function. This error occurs when the POWER is ON for the CD block and an error
is
detected after the transmission has started.
5Startup fails even when you
insert CD or the selected disc tray
does not open
F27 Tray 1 detect switch or Tray 2 detect switch NG (Check & Replace)
6Cannot insert CD F28 Tray 1 detect switch NG (Check & Replace)
7Cannot eject CD F29 Check if disc is stuck. Tray 2 detect switch NG (Confirm & Replace)
8CD power error F75 CD does not function.
Check if CDRST is H for SELECTOR at CD. If it is not H after 1 second,
it shall be memorised as an error. (IC702)
9The CD tray closes H15 CD disc tray detect switch NG (S3) (Check & Replace)
9.3. Power Supply related error detection
No. Error Error
Display Problem condition
1POWER AMP
output abnormal F61 When POWER is switched on, power become off automatically. During normal operation, if DC DET become L, PCNT shall become
L and the error display on the left shall be displayed. (IC501)
9
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10 CD Test Mode Function
This CD test mode is provided to check CD unit without connecting to changer loading mechanism. This mode shall operate CD
PLAY with CD unit being connected only and CD Automatic Alignment result is shown on FL display.
10.1. How to enter the Self-Diagnostic Function
1.Turn the unit on and select the CD function.
2.Press and hold the “STOP/TUNE MODE” button for at least 2 seconds.
3.While pressing the “STOP/TUNE MODE” button, press “FF/MEMORY” button for at least 2 seconds.
4.“ ” will appear on the FL display. (unit is in the CD test mode)
10.2. CD Automatically Adjustment result indication
Under CD test mode, pressing the numeric key ‘0’ on the remote controller will display the auto adjustment result. FLOCK, TLOCK
and CLVS status shall be shown as below:
During the above display, executing CD PLAY will display auto adjustment result for CD PLAY mode.
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••Measurement Condition
−−Reverse-mode seelctor switch:
−−Tape edit: NORMAL
−−Record timer: OFF
−−Make sure head, capstan and press roller are clean.
−−Judgeable room temperature 20 ± 5 °C (68 ± 9 °F)
••Measuring instrument
−−EVM (Electronic Voltmeter)
Caution:
••Please replace both azimuth adjustment screws
(RHE5152ZB) and springs (RMB0331) simultaneously
when readjusting the head azimuth. (shown in Fig. 2)
Even if you wish to readjust the head azimuth without
replacing the screws and springs, a fine adjustment to
the azimuth screw and spring.
••Please remove the screw-locking bond left on the head
base when replacing the azimuth screw.
••If you wish to readjust the head azimuth, be sure to
adjust with adhering the cassette tape closely to the
mechanism by pushing the center of cassette tape with
your finger. (shown in Fig. 3)
1.Playback the azimuth adjustment portion (8 kHz, -20dB)
of the test tape (QZZCFM) in the forward play mode.
Vary the azimuth adjusting screw until the output of the
R-CH (PB OUT-R) are maximized.
2.Perform the same adjustment in the reverse play mode.
3.After the adjustment, apply screwlock to the azimuth
adjusting screw.
1.Set the tape edit button to “NORMAL” position.
2.Insert the test tape (QZZCWAT) to DECK 2 and playback
(FWD side) the middle portion of it.
3.Adjust Motor VR (DECK 2) for the output value shown
below.
Adjustment target: 2940 ~ 3060 Hz (NORMAL speed)
4.After alignment, assure that the output frequency of the
DECK 2 REV and DECK 1 FWD are within ±45 Hz and ±60
Hz respectively of the value of the output frequency of
DECK 2 FWD.
−−Digital fre quency counter
••Test tape
−−Head azimuth adjustment (8 kHz, -20 dB); QZZCFM
−−Tape speed gain adjustment (3 kHz, -10 dB);
QZZCWAT
−−Playback gain adjustment (315 Hz, 0 dB); QZZCFM
−−CrO2 tape; QZZCRX
11 Measurements and Adjustments
11.1. Cassette Deck Section
11.1.1. Head Azimuth Adjustment (Deck 1/2)
11.1.2. Tape Speed Adjustment (Deck 1/2)
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1.Set the unit to “AUX” position.
2.Insert the Normal blank tape (QZZCRA) into DECK 2 and
the unit to “REC” mode (use “●REC/STOP” key).
3.Measure and make sure that the output is within the
standard value.
4.Insert the CrO2 tape (QZZCRX).
5.Repeat steps 2 and 3.
Bias voltage for Deck 2 (Standard
value) : 19 ± 4mV (Normal): 27 ± 5mV (CrO2)
Erase voltage for Deck 2(Standard
value) : more than 100mV (Normal): more than 150mV (CrO2)
1.Set the unit to “AUX” position.
2.Insert the Normal blank tape (QZZCRA) into DECK 2 and
set the unit to “REC” mode (●use “REC/STOP” key).
3.Adjust L1201 so that the output frequency is within the
standard value.
Standard Value: 98 ±8 kHz
Cassette Deck Section
11.1.3. Bias and Erase Voltage Check
11.1.4. Bias Frequency Adjustment (Deck 2)
11.2. Alignment Points
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Pin No. Mark I/O Function
1PDE ITracking signal input 1
2 PDF I Tracking signal input 2
3VCC IPower supply
4PDA IFocus signal input terminal 1
5PDB IFocus signal input terminal 2
6LPD IAPC amp input
7LD OAPC amp output
8 RF O RFsumming output
9 RFIN I Detector’s input
10 CSBRT ICapacitor for OFTR connection
11 CEA ICapacitor for HPF amp connection
12 BDO O BDO output (“H” : drop out)
13 LDON IAPC control
14 GND —Ground
No. Mark I/O Function
1BCLK O N.C.
2LRCK O N.C.
3SRDATA O N.C.
4DVDD1 IPower supply input (for digital
circuit)
5DVSS1 IGND (for digital circuit)
6TX ODigital audio interface signal
output (Latches data at first
transition)
7MCLK IMicroprocessor command
clock signal input
8 MDATA I Microprocessor command
data signal input
9MLD IMicroprocessor command
load signal input
10 SENSE OSense signal output (OFT,
FESL,MAGEND,NAJEND,PO
SAD,SFG) (Not used, open)
11 /FLOCK OFocus servo feeding signal
output (“L” : Feed)
12 /TLOCK OTracking servo feeding signal
output (“L” : Feed)
13 BLKCK OSub-code block clock signal
output (BLKCKf = 75Hz
during normal playback)
14 SQCK I External clock signal input for
sub-code Q resistor
15 SUBQ O Sub-code Q code output
16 DMUTE IMuting input (“H” : mute)
17 STAT OStatus signal output
(CRC,CUE,CLVS,TTSTVP,F
CLV,SQCK)
18 /RST IReset signal input
19 SMCK O1/2-diveded clock signal of
crystal osscillating at MSEL =
“H” (fSMCK = 8.4672 MHz)
1/4-divided clock signal of
crystal oscillating at MSEL =
“L” (fSMCK = 4.2336 MHz)
20 CSEL IFrequency Selection Terminal
H = 33.8688 MHz ; L =
16.9344 MHz
21 TRV O N.C
22 TVD O Traverse drive output
23 PC OSpindle motor ON output ("L"
: ON)
Pin No. Mark I/O Function
15 /RFDET ONRFDET output (“L” : detection)
16 PDOWN OPower-down input
17 OFTR OOFTR output
18 NC O N.C.
19 ENV O3T-ENV output
20 NC I N.C.
21 NC I N.C.
22 TEN I TE amp input
23 TEOUT OTE amp output
24 FEOUT OFE amp output
25 FEN I FE amp input
26 VREF O Reference voltage output
27 TBAL I Tracking balance control
28 FBAL I Focus balance control
No. Mark I/O Function
24 ECM OSpindle motor drive signal
output(forced mode output)
25 ECS OSpindle motor drive signal
output
(servo error signal output)
26 KICK O N.C.
27 TRD OTracking drive output
28 FOD OFocus drive output
29 VREF I D/A (drive) output (TVD, ECS,
TRD, FOD, FBAL, TBAL)
Reference voltage input
30 FBAL O Focus balance adjustment
output
31 TBAL O Tracking balance adjustment
output
32 FE IFocus error signal input
(analog input)
33 TE ITracking error signal input
(analog input)
34 RFENV IRF envelope signal input
35 VDET I Vibration detection signal
input ("H" :detection)
36 OFT IOff-track signal input ("H" : off
track)
37 TRCRS ITrack cross signal input
38 /RFDET IRF detection signal input ("L"
: detection)
39 BDO I Dropout signal input ("H" :
Dropout)
40 LDON OLaser on signal output ("H" :
ON)
41 PLLF2 I/O N.C.
42 DSLF2 OTracking Offset alignment
output/DSL Balance Output
(DA Output)
43 WVEL O N.C.
44 ARF I RF signal input
45 IREF IReference current input
46 DRF IDSL bias terminal (Not used,
open)
47 DSLF I/O DSL loop filter terminal
48 PLLF I/O PLL loop filter terminal
49 VCOF I/O VCO loop filter terminal
50 AVDD2 IPower supply input (for
analog circuit)
51 AVSS2 IGND (for analog circuit)
12 Terminal Function of IC’s
12.1. IC701 (AN8839NSBE2) Servo Amplifier
12.2. IC702 (MN662790RSC) Servo processor/ Digital signal processor/
Digital filter/ D/A converter
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No. Mark I/O Function
52 EFM OEFM signal output
53 PCK OPLL extraction clock output
(fPCK = 4.321 MHz during
normal playback)
54 VCOF2 I/O VCO Loop filter for 33.8688
MHz conversation terminal for
16.9344 MHz crystal mode,
must use other circuit
55 SUBC OSub-code serial data output
56 SBCK IClock input for sub-code
serial data
57 VSS I GND
58 X1 IN ICrystal oscillating circuit input
(f = 16.9344MHz)
59 X2 OUT OCrystal oscillating circuit input
(f = 16.9344 MHz)
60 VDD IPower supply input (for
oscillating circuit)
61 BYTCK OByte clock output
62 /CLDCK OSub-code frame clock signal
output (fCLDCK = 7.35 kHz
during normal playback)
63 FCLK OCrystal frame clock signal
output (fCLK = 7.35 kHz,
double = 14.7 kHz)
64 IPFLAG OInterpolation flag output (“H” :
Interpolation)
65 FLAG OFlag output
No. Mark I/O Function
1/RST -RESET output terminal
2NC - N.C.
3IN2 IMotor Drive (2) input
4PC2 ITurntable motor drive signal (“L
:ON)
5NC - N.C.
6IN1 IMotor driver (1) input
7NC I N.C.
8PVCC1 IPower supply (1) for driver
9PGND1 -Ground connection (1) for driver
10 NC - N.C.
11 D1- OMotor driver (1) reverse-action
output
12 D1+ OMotor driver (1) forward-action
output
13 D2- OMotor driver (2) reverse-action
output
14 D2+ OMotor driver (2) forward-action
output
No. Mark I/O Function
1SP_IN I/O SPEANA input
2DECK2 I/O Mech condition input 2
(HALF/RECIF/MODE/RECIR)
3DECK1 I/O Mech condition input 1
(HALF/MODE/PHOT1/PHOT2)
4KEY5 I/O Key 5 input
5KEY4 I/O Key 4 input
6KEY3 I/O Key 3 input
7KEY2 I/O Key 2 input
8KEY1 I/O Key 1 input
9JOG1B I/O JOG 1 input B main volume
10 JOG1A I/O JOG 1 input A main volume
11 CRT I/O CT timer control
No. Mark I/O Function
66 CLVS OSpindle servo phase
synchronizing signal output
("H" : CLV, "L" : rough servo)
67 CRC OSub-code CRC checked
output (“H’ :OK, “L” :NG)
68 DEMPH ODe-emphassis ON signal
output (“H” :ON)
69 RESY OFrame re-synchronizing signal
output
70 IOSEL IMode Switching Terminal
71 /TEST ITest input
72 AVDD1 IPower supply input (for
analog circuit)
73 OUTL O Left channel audio signal
output
74 AVSS1 IGND
75 OUTR O Right channel audio signal
output
76 RSEL IRF signal polarity assignment
input (at "H" level, RSEL="H",
at "L" level, RESL="L")
77 IOVOD I5V supply input
78 PSEL ITest terminal (connected to
Gnd)
79 MSEL ISMCK oscillating frequency
designation input (“L”:4.2336
MHz, “H”:8.4672 MHz)
80 SSEL ISUBQ output mode select
(“H”:Q-code buffer mode)
No. Mark I/O Function
15 D3- OMotor driver (3) reverse-action
output
16 D3+ OMotor driver (3) forward-action
output
17 D4- OMotor driver (4) reverse-action
output
18 D4+ OMotor driver (4) forward-action
output
19 NC - N.C.
20 PGND2 -Ground connection (2) for driver
21 PVCC2 IPower supply (2) for driver
22 NC - N.C.
23 VCC I Power supply terminal
24 VREF I Reference voltage input
25 IN4 IMotor driver (4) input
26 IN3 IMotor driver (3) input
27 RSTIN I Reset terminal
28 NC - N.C.
No. Mark I/O Function
12 JOG2B I/O JOG 2 input B multi jog
13 JOG2A I/O JOG 2 input A multi jog
14 DSPRST I/O DSP reset output
15 DSPACK I/O DSP ACK input
16 SENSE I/O DSP sense input
17 ECO I/O ECO output
18 PCNT I/O PCNT output
19 MECHSC I/O Mecha control CS input
20 MECHCK I/O Mecha control clock input
21 MECHSO I/O Mecha control data output
22 MECHSI I/O Mecha control data input
23 MECHRQ I/O Mecha control request output
12.3. IC703 (AN8739SBE2) Focus coil/ Tracking coil/ Traverse motor/
Spindle motor driver
12.4. IC601 (M38199MF210F) System Microprocessor
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No. Mark I/O Function
24 MIC SW I/O MIC detect SW input(L:NO MIC
H:MIC)
25 PHONE I/O PHONE detect input
(L:NO PHONE H:PHONE)
26 SER7 I/O Serial 7 output (EEPROM IC CS)
27 SER6 I/O Serial 6 output (DSP MPU CS)
28 SER5 I/O Serial 5 output (PLL IC CE)
29 RMT I Remote control input
30 SER4 I/O Serial output for IC
31 SER3 I/O Serial output for IC
32 SER2 I/O Serial output for IC
33 SER1 I/O Serial output for IC
34 SYNC IAC failure detect input
35 RESET I RESET input
36 XCIN I/O X’tal oscillator (f = 32.768 kHz sub
clock)
37 XCOUT I/O X’tal oscillator (f = 32.768 kHz sub
clock)
38 XIN IX’tal oscillator (f = 8.0 MHz main
clock)
39 XOUT OX’tal oscillator (f = 8.0 MHz main
clock)
40 VSS — Ground (0V)
41 MBP1 OMPU beat proof output 1
42 MBP 2 O MPU beat proof output 2
43 SD ITuner signal detect input
44 DO/ST ITuner DO/ST input
45-56 GRD12-
GRD1 OLCD grid signal output
57-89 AND33-AND1 OLCD segment signal output
90 REGION IN IRegion select signal input
91 VCC I Power supply (+5V)
92 SP_A OSpace control A
93 SP_B OSpace control B
94 SP_C OSpace control C
95 TPS_IN I TPS signal input
96 DCDET IDC detect input
97 MECHPS OMECHCON reset output
98 -VP — Power supply (-30V)
99 AVSS — Analog Ground (0V)
100 VREF I Reference for input
15
SA-AK78
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13 Block Diagram
Laser
power
drive
27
4
5
28
OPTICAL PICKUP
Q701
6
7
Vref.
Vref.
Ach
VCBA
Bch
1Vref.
Vref. Ech
VCBA
Fch
F
2
Vref.
Vref.
2316
A
B
E
+B2
AN8839NSBE2
IC701
SERVO AMP
Vref.
Vref.
+B2
Vref.
13
Vref.
AN8739SBE2
IC703
FOCUS COIL / TRACKING
COIL / TRAVERSE MOTOR /
SPINDLE MOTOR DRIVE
Vref.
Vref.
26
VREF
14
3+B2
Vref. 24
FE
BDO
11
3
TENV
RF
DET.
+B2
OFTR
DET.
10
+B2
19
15
RFENV
/RFDET
17
OFT
89
VREF
TE
FBAL
TBAL
F-
F+
T-
T+
VREF
22
17
16
D4+
D4-
11
10
D1+
D1-
13
12
D2+
D2-
TRV+
TRV-
M
1
IN3
24
IN4
23
15
14
D3+
D3-
/RST
PGND1
PGND2
8
19
+B1
7
20
PVcc1
PVcc2
IN1
6
IN2
3
PC2
4
TRD
FOD
TVD
ECS
ECM
PC
ENV
OFTR
/RFDET
FE OUT
V
CC
VREF
GND
TEOUT
PDOWN
FBAL
TBAL
PDF
PDE
PDB
LDON
PDA
LD
LPD RF RFIN CSBRT CEA
EE
F F
B
C
C
A
D
D
SP+
SP-
M
Vref.
(VREF)
TJ702
TEIN
22
(RF)
TJ701
BDO
DET. 12
BDO
FE IN
25
LDON
•
CD CHANGER SECTION
SEMICONDUCTOR
LASER
PHOTO DETECTOR
FOCUS COIL
TRACKING COIL
M702
SPINDLE
MOTOR
M701
TRAVERSE
MOTOR
TRACKING
COIL
DRIVE
FOCUS
COIL
DRIVE
RESET
SIGNAL
GENERATOR
SPINDLE
MOTOR
DRIVE
TRAVERSE
MOTOR
DRIVE
SUBTRACTER
SUBTRACTER
16
SA-AK78
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76
RSEL
44
ARF
46
DRF
47
41
52
PLLF
48
EFM
53
PCK
14
SQCK
80
SSEL
73
9
MLD
68
MSEL
75
OUTR
PWM
(R)
OUTL
PWM
(L)
MLD
MN662790RSC
IC702
SERVO PROCESSOR / DIGITAL SIGNAL PROCESSOR
DIGITAL FILTER / D/A CONVERTER
R ch
PSEL
78
7
+B2
45060
DVDD1
AVDD2
VDD
79 80
SSEL
69
PSEL
IOSEL
CLVS
CRC
BLKCK
/CLDCK
SBCK
SUBC
DEMPH
5745157
DVss1
AVss1 AVss2
Vss
16k
SRAM
VCO
70
66
67
13
62
56
55
BLKCK
SQCK
SUBQ
15
SUBQ
PLLF2
DSLF
MCLK MCLK
MDATA
8
MDATA
STAT
17
STAT
VCOF2
54
VCOF
49
BYTCK
61
SMCK
19
FCLK
63
CSEL
20
MSEL
79
X2 OUT
59 58
X1 IN FE TE RFENV
32 33 34
FE TE RFENV
TRCRS
VDET
BDO
37 35 39
BDO
/RFDET
OFT
38 36
/RFDET
OFT
10 43 40
SENSE
WVEL
LDONLDON
/FLOCK
/TLOCK
FBAL FBAL
TBAL TBAL
FOD FOD
TRD TRD
TVD TVD
VREF VREF
TRV
KICK
DSLF2 DSLF2
DMUTE
BCLK
SRDATA
LRCK
PC PC
ECS ECS
ECM ECM
IPFLAG
FLAG
11
12
30
31
28
27
22
29
21
26
42
16
1
3
2
23
25
24
64
65
6
TX
VCC5V
77 71
/TEST
18
/RST
+B2
+B2
DSLF2
45
IREF
+B2
+B2
X701
(16.9344MHz)
/RST
+B2
RESY
AVDD1
72
+B2
1 BIT DAC
PWM LOGIC
A/D
CONVERTER
DSL / PLL VCO
VCO
8 TIMES OVERSAMPLING/
DIGITAL FILTER
DIGITAL DEEMPHASIS
DIGITAL AUDIO
INTERFACE
DIGITAL AUDIO
INTERFACE
INTERPORATION/
SOFT MUTING/
DIGITAL
ATTENUATION
CIRC ERROR
CORRECTION/
DEINTERLEAVE
SUBCODE
BUFFER
EFM DEMODULATION/
SYNC INTERPOLATION
SUBCODE DEMODULATION CD-TEXT
BUFFER
OUTPUT
PORT
D/A
CONVERTER
SERVO CPU
SERVO TIMING
GENERATOR
INPUT PORT
TIMING
GENERATOR
PITCH
CONTROL
MICRO COMPUTER
INTERFACE
17
SA-AK78
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XC1
M38503M4254F
IC451
SYSTEM CONTROL
TC74HCT7007A
IC453
INTERFACE
P23
INT0
INT2
5
P12
P11
CNTR1
/RST
18
XOUT
XIN
20
19
X451
(8MHz)
BLKCK
4
INT3
SUBQ
STAT
11
P10
MLD
MDATA
MCLK
/RST
13
7
29
27
168
28
SQCK
1
V
CC
SW5V
VREF
2
P32
S5
(BOTTOM)
40
S1
(TRAY POSITION 1
DET.)
36
P01
37
P00
S2
(TRAY POSITION 2
DET.)
38
P34
S3
(OPEN DET.)
39
P33
S4
(CLAMP)
1213
9
10
8
7
GND
SW5V
Vcc
+B6
Q451,
452
PLUNGER
M
RM1
(LOADING
MOTOR)
1
2
10
5
6
7,8
+B6
TA7291P
IC1
MOTOR DRIVE
4
D2 Q1
30
P07
32
P05
33
P04
SW5V
D1
(POSITION
SENSOR)
31
P06 P02
35
14
CD P.B.signal
M CS
M CK
M SI
M REQ
M SO
M RST
RXO
12
TXO
1110
CLK
96
CNTR0
INT1
S701
(REST)
21 315
AV
SS
CNV
SS
V
SS
34
P03
+B2
41
To MAIN SECTION
3.3V
MON
PLUNGER
DRIVE
MOTOR
DRIVE
Note:
: CD SIGNAL LINE
18
SA-AK78
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19202122 23
AM
MIX
12
LEVEL
DET.
FM IF S-
CURVE
2
3
REG
4
13
AGC
COMP.
68 110
AM
RF
AMP
AM
IF
AM/FM
IF
BUFF.
24
1
FM
DET.
AM
OSC
BUFF.
ALC
TUNING
DRIVE
18
FM ANT
RF AMP
FM MIXER
LOCAL OSC
9
Vcc
+B(FM)
FM IF
AMP
+B3
AM
IFT
1
20
7.2MHz
XIN
XOUT
SWALLOW COUNTER
1/6,1/17 4bit
12 BIT
PROGRAMMABLE
DIVIDER
CE
2
3
DI
4
CL
D0
5
98710
STRQ
SDC
FM
15
V DD
16
PD
IFIN
11
LW
1/2 14
13
FM IN
AM IN
+B3
+B5
+B(FM)
SD
PLLCE
PLLDT
DO
STEREO
SW
17
LA1833MN
FM / AM I F AMP,
DET / AM OSC,
MIX / FM MPX
15
PILOT
CANCEL
16
VCO FFFFFF
AM
DET.
DECODER
AM
6
MONO
12
19
Vss
POWER
ON
RESET
LC72131M
PLL FREQUENCY
SYNTHESIZER
+B3
GND
57
ST
MONO
FM/AM
SD
FMDET
FM IF
IN
OSC
OUT
AFC
OSC
AM RF
IN
AGC
AM
OUT
DET
OUT
PILOT
IN
MPX
IN
PILOT
OUT
Lch
14
Rch
17
18
AIN
AOUT
AM ANT
+B3
STRQ
AM IF IN
AM MIX OUT
Rch
A
IFT
+B(FM)
+B(FM)
+B(FM)
•
MAIN SECTION
BUFFER
AMP
AM
ANT
COIL
AM
OSC
COIL
PHASE
DET.
PILOT
DET.
PHASE DETECTOR
CHARGE PUMP REFERENCE DIVIDER
UNIVERSAL
COUNTER DATA SHIFT REGISTER
LATCH
POWER
SUPPLY
(FM:ON)
19
SA-AK78
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CD P.B.signal
To Main section
7
BP1
TAPE
ERASE
HEAD
[ DECK 2 ]
R/P
HEAD
(L ch)
[ DECK 2 ]
4
[ DECK2 ]
S973
(ATS/CrO2)
Q1107 (Q1108)
L1201
Q1179
Q1173~1176
Q1103 (Q1104)
5
[ DECK1 ]
S953
(ATS/CrO2)
REC EQ
(CrO2/H.SPEED)
3
25(12) 23 22 15 3
24
(13)
14 SW ALC
26(11)
28(9)
27(10)
2
1
Q1101(Q1102)
36(1)
33(4)
32(5)
31(6)
21 17 16
TPS 18
30(7)
34
CR NETWORK
BIAS OSC
CONTROL
+B3
+B2
+B3
4
+B3
IH
10
DMT
8
Q1115
(Q1116)
Q1218
PLAYBACK
HEAD
(L ch)
[ DECK 1 ]
192
11
REC
Q1151
(Q1152)
15
1PL
D951
Q1207,1209
SOLENOID +B5 +B6
3
2
CLK
DATA
14
2PL
D971
Q1206,1208
SOLENOID
SOLENOID
DRIVE
[DECK2]
+B5 +B6
1M
13
Q1203,1220
MOTOR
DRIVE
MOTOR
M
+B5
+B6
16
Vcc
1
GND
DECK1
S972
(HALF)
Z971
S974
(R.REC INH.)
S975
(F.REC INH.)
S971
(MODE)
DECK2
Q1153
(Q1154)
29(8)
AGC OFF
+B6
Z1101
S952
(HALF)
S951
(MODE)
Q1120,1121Q1118,1119
VREF+ VREF+
VREF+
Q1171
+B3
A
BU2090AF-E2
IC1105
SYSTEM CONTROL
[DECK2 ]
0N2180RLC1
IC971
TP11 TP12
TP5
BA7755A
IC1102
R/P SELECT
TP3
(TP4)
M51167AFP-TB
IC1101(1/2)
REC AMP / ALC
M51167AFP-TB
IC1101(1/2)
P.B. EQ / TPS AMP
TPS
HEAD SELECT
(PLAY:ON)
HEAD SELECT
(PLAY:ON)
SWITCHING
(REC:ON)
MUTING
SWITCHING
(PLAY:ON)
INTERFACE
SWITCHING
(REC:ON)
SWITCHING
(B.P.)
INTERFACE INTERFACE
INTERFACE SOLENOID
DRIVE
[DECK1]
BUFFER
AMP
TP9( TP10 )
[DECK1 ]
0N2180RLC1
IC951
20
SA-AK78
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