Text preview for : Panasonic SA-HT80.pdf part of Panasonic SA-HT80 Service
Back to : Panasonic SA-HT80.part01. | Home
ORDER NO. MD0005069C2
DVD Home Theater Sound System
SA-HT80
Colour (S) ... Silver Type Area (E) ... Europe (EB) ... Great Britain (EG) ... Germany and Italy (EE) ... Eastern Europe CD SECTION : DPT-3ATU-AD TRAVERSE DECK SERIES
Specifications
s AMPLIFIER SECTION RMS TTL POWER OUTPUT (10% total harmonic distortion at 1 kHz) FRONT CENTER SURROUND SUBWOOFER DIN TTL POWER OUTPUT (1% total harmonic distortion at 1 kHz) FRONT CENTER SURROUND SUBWOOFER Input sensitivity/ input impedance AUX s FM TUNER SECTION Frequency range Sensitivity Antenna terminals s AM TUNER SECTION Frequency range Sensitivity S/N 20 dB at 999 kHz 500 µV 522 - 1629 kHz (9 KHz steps) Digital filter D/A converter 87.5 - 108.0 MHz (50 kHz steps) 16.3 dBf (1.8 µV, IHF) 75 unbalanced 250 mV, 10 k Audio Sampling frequency CD DVD Decoding Wow and flutter 44.1 kHz 48 kHz/96 kHz 16/20/24 bit linear Less than possible measurement data 8 fs Delta-sigma DAC 26 W per ch (6) 26 W (6) 26 W per ch (6) 90 W (6) 36 W per ch (6) 36 W (6) 36 W per ch (6) 120 W (6) 220 W CD/V-CD Video Signal system Output level S-video Y S-video C NTSC/PAL (depend on disc format) Composite video 1 Vp-p (75) 1 Vp-p (75) 0.300 Vp-p (75/PAL) 0.286 Vp-p (75/NTSC) 300 W s DISC SECTION Disc DVD 8 cm/12 cm single-sided, single-layer 8 cm/12 cm single-sided, double-layer 8 cm/12 cm double-sided, double-layer (one layer per side) 8 cm/12 cm
© 2000 Matsushita Electronics (S) Pte Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.
SA-HT80
Pick up Beam Source Wavelength s GENERAL Power supply Power consumption Standby Dimensions (W x H x D) Mass Note: 1. Specifications are subject to change without notice. Weight and dimensions are approximate. 2. Total harmonic distortion is measured by the digital spectrum analyzer. AC 230-240 V, 50 Hz 178 W 0.50 W 430 x 136 x 400 mm 8.7 kg Semiconductor Laser 665 nm
s System
SC-HT80 (E) SC-HT80 (EB) SC-HT80 (EG) SC-HT80 (EE)
s Main Unit
SA-HT80 (E) SA-HT80 (EB) SA-HT80 (EG) SA-HT80 (EE)
s Front, surround and center speakers
SB-AFC80 (E) SB-AFC80 (EB) SB-AFC80 (EG) SB-AFC80 (EE) SB-W80 (E) SB-W80 (EB) SB-W80 (EG) SB-W80 (EE)
s Subwoofer
CONTENTS
Page
1 Before Repair and Adjustment 2 Protection Circuitry 3 Accessories 4 Handling Precautions For Traverse Deck 5 Precaution of Laser Diode 6 Caution for AC Mains Lead 7 Operation Procedures 8 Operation Checks and Main Component Replacement Procedures 9 Self-Diagnosis and Replacement of Optical Pickup 10 Lock Mode for Demonstration 10 34 35 3 3 3 4 5 7 8 11 Tilt Adjustment for Optical Pickup 12 Self-Diagnosis Function and Service Mode 13 Power Adjustment 14 Measurement and Adjustments 15 Illustrations of ICs, Transistor and Diode 16 Terminal Functions of ICs 17 Block Diagrams 18 Schematic Diagram 19 Printed Circuit Boards 20 Wiring Diagram 21 Parts Location and Replacement Parts List
Page
36 38 40 42 43 44 45 57 94 107 109
2
SA-HT80
1 Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors C554 ~ C557 and C782 through a 10 , 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 230 V, 50 Hz in NO SIGNAL mode should be ~850mA.
2 Protection Circuitry
The protection circuitry may have operated if either of the following conditions are noticed: · 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.
3 Accessories
Please refer to Accessories Parts List for part number.
FM ANTENNA
REMOTE CONTROL
AM LOOP ANTENNA
AC CORD (EB)
VIDEO CABLE AC CORD (EE, EG, E)
ANTENNA PLUG ADATER
3
SA-HT80
4 Handling Precautions For Traverse Deck
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). 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.
4
SA-HT80
5 Precaution of Laser Diode
CAUTION : This product utilizes a laser diode with the unit turned "ON",invisible laser radiation is emmitted from the pickup lens. Wavelength : 780 nm Maximum output radiation power from pick up : 100µW/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 abgestrahlt. Wellenlänge : 780nm Maximale Strahlungsleistung der Lasereinheit : 100µW/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.
5
SA-HT80
5.1.
Use of Caution Labels
6
SA-HT80
6 Caution for AC Mains Lead
7
SA-HT80
7 Operation Procedures
8
SA-HT80
7.1.
Remote Control
9
SA-HT80
8 Operation Checks and Main Component Replacement Procedures
"ATTENTION SERVICER" Some chassis components may have sharp edges. Be careful when disassembling and servicing. 1. This section describes procedures for checking the operation of the major printed circuit boards and replacing the main components. 2. For reassembly after operation checks or replacement, reverse the respective procedures. Special reassembly procedures are described only when required. 3. Select items from the following index when checks or replacement are required. 4. Refer the Parts No. on the page of "Main Component Replacement Procedures", if necessary. Contents · Checking Procedure for each major P.C.B. 1. Checking of the DVD module board and the DAC board. (Pg11) 2. Checking the FL board. (Pg12) 3. Checking the DSP board. (Pg13) 4. Checking the tuner board and the main board. (Pg15) · Procedures for replacement of main parts and disassembly/reassembly of parts. 1. Replacement of the Traverse deck (standard). (Pg16) 2. Replacement for the Disc Tray. (Pg18) 3. Disassembly and reassembly for the Mechanism Base Unit. (Pg20) 4. Replacement for the Motor. (Pg28) 5. Replacemnet for the Traverse motor, optical pickup and spindle motor. (Pg29) 6. Replacement of the Power IC and Constant-voltage Transistors. (Pg32) Warning: This product uses a laser diode. Refer to caution statement on page 5. ACHTUNG : · Die Lasereinheit nicht zerlegen. · Die Lasereinheit darf nur gegen eine vom Hertsteller spezifizierte Einheit ausgetauscht werden.
10
SA-HT80
8.1.
8.1.1.
Checking Procedure for each major P.C.B.
Checking the DVD module board and the DAC board
CAUTION When reassembling the cabinet, use the utmost care to avoid scratching the front panel (standard) with the claws (B). · Check the condition of the DVD module board (side A) as shown in the diagram below.
Step 1 Remove the screws. Step 2 Remove the screws.
Step 3 Expand the both sides of the cabinet, and unlock the claws (A).
Step 5 Remove the screws. Step 6 Remove the latches. Step 7 Pull out the FFC cable. Step 8 Remove the connector (CN1305).
Step 4 Pull the cabinet to the rear direction of the unit.
11
SA-HT80
Step 9 Lift up and remove the DVD module board from the rib (A). Then, remove the DVD module board from the claws (A). Step 10 Lift up and remove the DAC board from the rib (B). Then, remove the DAC board from the claws (B).
8.1.2.
Checking the FL board
· Follow the instructions, the above Step 1 to Step 4 under Section 1 of [Checking Procedure for each major P.C.B.]. Step 1 Insert a hexagon screwdriver (the jig with servicing gear) into the hole located in the bottom of the unit, turn the driver to the arrow direction to open the disc tray.
Step 11 Turn over the DVD module board and the DAC board. Step 12 Connect the FFC cable to the connector (CN1304). Step 13 Place cardboard. Step 2 Remove the two claws to remove the disc tray cover.
· Check the conditions of the DVD module board (side B) and the DAC board (solder side) as shown in the diagram below.
12
SA-HT80
Step 3 Push in the disc tray.
8.1.3.
Checking the DSP board
· Follow the instructions, the above Step 1 to Step 4 under Section 1 of [Checking Procedure for each major P.C.B.]. Step 1 Remove the two claws of the board holder, and pull up the DVD constant-voltage board.
Step 4 Remove the screws. Step 5 Remove the front panel (standard).
· Check the condition of the DSP board as shown in the diagram below. Step 2 Place the DVD constant-voltage board on the loading unit.
· Check the condition of the FL board as shown in the diagram below.
CAUTION Place cardboard.
13
SA-HT80
8.1.4.
Checking the DVD constantvoltage board
· Follow the instructions, the above Step 1 to Step 4 under Section 1 of [Checking Procedure for each major P.C.B.]. · Follow the instructions, Step 1 to Step 5 under Section 2 of [Checking Procedure for each major P.C.B.]. (Note: Clamp the disc to the loading unit in advance.) Step 1 Remove the screws.
Step 7 Remove the board holder claws, and pull out the DSP board.
· Check the parts surface of the DVD constant-voltage board as shown in the diagram below. Step 2 Attach the front panel (standard) to the unit. Step 3 Turn over the loading unit, and place it onto the upper right side of the unit.
CAUTION Pull upward the DSP board to avoid breaking the protrusion on the DSP board. · Check the condition of the DVD constant-voltage board from its solder side as shown in the diagram below.
CAUTION Place cardboard. · If the conditions of other parts cannot be checked from the component side on the DVD constant-voltage board, follow the instructions below to check from the solder side of the boards. Step 4 Remove the front panel (standard), and reassemble the loading unit. Step 5 Remove the screws. Step 6 Remove the two claws, and remove the backboard.
14
SA-HT80
8.1.5.
Checking the Tuner board and the Main board
· Follow the instructions, the above Step 1 to Step 4 under Section 1 of [Checking Procedure for each major P.C.B.]. · Check the condition of the tuner board and the main board as shown in the diagram below. Step 1 Remove the screws. Step 2 Remove the two claws, and remove the backboard.
Step 6 Reassemble the tuner board to its original position Step 7 Remove the parallel piece from the connector (CN902).
Step 3 Remove the claw located in the board holder, and pull out the tuner board.
· Check the conditions of the solder side of the tuner board and main board as shown in the diagram below. Step 8 Place the main board in the parallel position.
Step 4 Remove the screws. Step 5 Remove the screws.
15
SA-HT80
8.2.
8.2.1.
Procedure for replacement of main parts and disassembly/reassembly of parts
Replacement of the Traverse deck (standard)
CAUTION The FFC cable (A) is directly connected to the optical pickup through the traverse backboard. After removing the cable, immediately insert an antistatic shorting pin to the FFC cable. (Refer to "Handling Precautions for Traverse Deck Optical Pickup" for the details.) Step 8 Remove the claw, and remove the FFC holder. Step 9 Insert a hexagon screwdriver (with servicing gear).
· Follow the instructions, the above Step 1 to Step 4 under Section 1 of [Checking Procedure for each major P.C.B.]. · Follow the instructions, Step 1 to Step 5 under Section 2 of [Checking Procedure for each major P.C.B.]. Step 1 Remove the screws. Step 2 Pull out the two FFC cables. Step 3 Remove the two connectors. Step 4 Remove the loading unit.
Step 5 Remove the screws. Step 6 Pull out the two FFC cables. Step 7 Remove the upper board. Step 10 Turn the hexagon screwdriver clockwise, and open the disc tray fully.
16
SA-HT80
Step 11 Turn the hexagon screwdriver clockwise while the claw (A) is pressed down. Step 12 When the claw (B) is pressed to the arrow direction 1, the connection lever moves to the arrow direction 2.
8.2.1.1.
Reassembly of Traverse Deck (standard)
Step 1 Attach the traverse deck (standard) to the timing lever. Step 2 Insert the protrusions of the traverse deck (standard) into the dent of the TRV camshaft gear.
Step 13 Lift up the traverse deck (standard).
Step 14 Remove the traverse deck (standard) from the timing lever.
17
SA-HT80
Step 3 Push into the claw of the timing lever.
Step 4 Turn the hexagon screwdriver fully to the arrow direction to close the disc tray securely.
8.2.2.
Replacement for the Disc Tray
· Follow the instructions, the above Step 1 to Step 4 under Section 1 of [Procedure for disassembly to board function check]. · Follow the instructions, Step 1 to Step 5 under Section 2 of [Checking Procedure for each major P.C.B.]. · Follow the instructions, Step 1 to Step 7 under Section 1 of [Procedure for replacement of main parts and disassembly/reassembly of parts]. Step 1 Remove the screws. Step 2 While holding up the claw to the arrow direction 1, pull out the clamp SW board to the arrow direction 2. Step 3 Remove the mechanical cover.
Step 5 While pushing the claw (B) to the arrow direction 1, push the connection lever to the arrow direction 2.
18
SA-HT80
Step 4 Insert the hexagon screwdriver (with servicing gear) into the hole.
Step 5 Turn the hexagon screwdriver clockwise, and pull out the disc tray fully.
8.2.2.1.
Reassembly of Disc Tray
Step 1 Slide the driving rack to the arrow direction completely.
Step 6 Release the stoppers located in the both sides of the unit, and pull out the disc tray.
Step 2 Insert the disc tray into the loading unit while holding the driving rack securely.
Step 7 As the left leg of the disc tray contacts the claw, pull out the disc tray while holding down the leg.
19
SA-HT80
Step 3 The driving rack and the drive gear should engage with each other.
8.2.3. 8.2.3.1.
Disassembly and Reassembly for the mechanical base unit Disassembly of the mechanical base driving section
· Follow the instructions, the above Step 1 to Step 4 under Section 1 of [Checking Procedure for each major P.C.B.]. · Follow the instructions, Step 1 to Step 5 under Section 2 of [Checking Procedure for each major P.C.B.]. · Follow the instructions, Step 1 to Step 14 under Section 1 of [Procedure for replacement of main parts and disassembly/reassembly of parts]. · Follow the instructions, Step 1 to Step 7 under Section 2 of [Procedure for replacement of main parts and disassembly/reassembly of parts]. Step 1 Remove the screws. Step 2 Remove a claw, and then the pitch plate.
CAUTION Slightly hold down the right leg of the disc tray. Step 4 Insert the disc tray while holding the driving rack. Step 5 Rotate the gear 5 or 6 times manually, and then push the disc tray.
Step 3 Remove the belt and gear spring.
CAUTION Take care to avoid losing the removed change gear spring.
20
SA-HT80
Step 4 Remove the pulley gear, change gear, and UP/DOWN gear.
Step 8 Remove a claw, and then the rear lock.
Step 5 Remove the two claws, and then the bottom SW board. Step 6 Put the tray lock spring on the hook temporarily. Step 7 Remove a claw, and then the tray lock.
CAUTION Take care to avoid removing the rear lock spring. Step 9 Push the connection lever into the arrow direction 2 while pressing the claw (B) to the arrow direction 1.
21
SA-HT80
Step 10 Slide the slide board (R) to the end of the stock side.
Step 12 Remove the slide boards (R) and (L).
Step 11 Lift up the left side of the spindle base unit to the arrow direction 1, and then remove the whole unit to the arrow direction 2.
Step 13 Remove the TRV relay gear, TRV camshaft gear, and drive gear.
22
SA-HT80
8.2.3.2.
Disassembly/Assembly of Spindle Base Unit
CAUTION Take care to avoid losing the removed disc lever spring. Step 4 Remove the two claws, and then the rear gear B.
Step 1 Push down the lower hook using a flat-slot screwdriver with a thin tip, and remove the five disc spacers.
Step 2 Slide the supporting plate to the arrow direction while pressing the claw, and remove the plate. Step 5 Remove the two claws.
Step 3 Pull out the disc lever while the disc lever is set to the position rotated to the arrow direction 1. CAUTION As the rotation stopper (standard) tends to jump by the spring, hold down the area shown in the diagram.
23
SA-HT80
Step 6 Remove the cushioning spring. Step 7 Remove the rotation stopper (standard) to the arrow direction.
Step 10 Remove the lower spindle spring using tweezers.
Step 11 Push in the lower hook using a flat-slot screwdriver with a thin tip, and remove the five disc spacers. Step 12 Pull the shaft of the lower hook.
Step 8 Remove the two claws, and pull out the relay gear A.
Step 9 Remove the two claws, and then spindle shaft.
24
SA-HT80
Step 13 Rotate the lower spindle to the arrow direction till it contacts the stopper. Step 14 Insert a flat-slot screwdriver with a thin tip into the space between the lower spindle and the UP/DOWN base so that the lower spindle is slightly lifted up and the stopper is unlocked. Then rotate and remove the lower spindle.
8.2.3.3.
Reassembly of Rotation Stopper (standard)
Step 1 Join the claw of the rotation stopper (standard) to the pole of the spindle base. (Identify the large or small size of the claws and poles.)
Step 15 Rotate the UP/DOWN base at the angle of 90 degree. Then, open the protrusions of the rotation stopper to remove the UP/DOWN base. Step 2 Bring down the rotation stopper (standard), and fit the trapezoidal teeth of the lower spindle into the notch of the relay gear A.
Step 3 Push in the rotation stopper (standard), and hook the claws securely.
25
SA-HT80
8.2.3.4.
Reassembly of Mechanical Driving Section
Step 4 Attach the slide board (L) to the mechanical base, and fasten together with connection lever. Step 5 Attach the slide board (R) to the mechanical base, and fasten together with the connection lever. Then, position the trapezoidal tooth of the TRV relay gear correctly.
Step 1 Attach the TRV camshaft gear. Step 2 Turn the TRV camshaft gear clockwise.
Step 3 Attach the drive gear and TRV relay gear.
Step 6 Attach the spindle base unit. (Attach to the slide board (R) side first.)
Be sure that the trapezoidal tooth of the TRV camshaft gear is correctly fit into the notch as shown in the right diagram.
26
SA-HT80
Step 7 Slide the slide board (R) to the front side completely. Step 8 Attach the rear lock. (The claw should be hooked.)
Step 12 Attach the UP/DOWN gear, change gear, change gear spring, pulley gear and belt in that order as shown in the diagram below.
Step 9 Attach the bottom SW board. Step 11 Remove the tray lock spring from the hook, and put it to the tray lock. Step 13 Attach the pitch plate, and fasten with the screws (a).
Step 14 Attach the disc tray, traverse deck, mechanical cover, etc. (Refer to Sections 1 and 2 under Procedure for replacement of main components for the details.) [Function Check after Completion] Use a hexagon screwdriver (with a servicing gear) to rotate and check the following functions. 1. Opening condition of the disc tray 2. Tray movement to the stock side 3. Up and down movements of the spindle base unit 4. Up and down movements of the traverse unit
27
SA-HT80
8.2.4.
Replacement for the motor
Step 6 Remove the claws (A), and then the motor board. Step 7 Remove the claw (B), and then the motor.
· Follow the instructions, the above Step 1 to Step 4 under Section 1 of [Checking Procedure for each major P.C.B.]. · Follow the instructions, Step 1 to Step 5 under Section 2 of [Checking Procedure for each major P.C.B.]. · Follow the instructions, Step 1 to Step 7 under Section 1 of [Procedure for replacement of main parts and disassembly/reassembly of parts]. · Follow the instructions, Step 1 to Step 5 under Section 2 of [Procedure for replacement of main parts and disassembly/reassembly of parts]. Step 1 Hook the belt temporarily.
8.2.4.1.
Precautions: Motor Assembly
1. The motor label should be positioned in the traverse deck side (standard). 2. The motor holes and ribs should be securely fitted with each other.
CAUTION Keep track that the belt should be free from grease or other agents. Step 2 Turn over the CD changer unit. Step 3 Remove the screws. Step 4 Remove the solders (2 places) of the plunger terminal. Step 5 Remove the solders (2 places) of the motor terminal.
28
SA-HT80
8.2.5.
Replacement for the Traverse motor, optical pickup and spindle motor.
Step 4 Unfasten the claw to open the hook of the FFC holder, and remove the FFC cable.
· Follow the instructions, the above Step 1 to Step 4 under Section 1 of [Checking Procedure for each major P.C.B.]. · Follow the instructions, Step 1 to Step 5 under Section 2 of [Checking Procedure for each major P.C.B.]. · Follow the instructions, Step 1 to Step 14 under Section 1 of [Procedure for replacement of main parts and disassembly/reassembly of parts]. Step 1 Remove the screws. Step 2 Remove the relay board.
CAUTION Insert an antistatic shorting pin to the FFC cable of the optical pickup. (Refer to "Handling Precautions for Traverse Deck Optical Pickup" for the details.) Step 5 Remove the screws. Step 6 Remove the traverse chassis.
Step 3 Pull out the FFC holder.
29
SA-HT80
Step 7 Pull out the FFC cable from the connector. Step 8 Remove the screws. Step 9 Remove the traverse motor.
Step 13 Remove the optical pickup (standard). Step 14 Pull out the guide shaft 1.
Step 10 Unfasten the claw to remove the spring support. CAUTION 1. The optical pickup uses the extreme precision technology, and is sensitive to shocks. 2. Do not touch the lens of the optical pickup. Step 15 Remove the screw. Step 16 Remove the nut unit. Step 17 Remove the screw. Step 18 Remove the spring.
Step 11 Remove the spring. Step 12 Lift up the optical pickup (standard), and remove the Guide shaft 1 from the Guide A.
CAUTION Take care to avoid losing the removed spring.
CAUTION After assembly, apply the screw lock.
30
SA-HT80
Step 19 Remove the screws. Step 20 Remove the spindle motor.
8.2.5.1.
Reassembly of Optical Pickup
Step 1 Pass the FFC cable through the hole of the traverse base. Step 2 Insert the Guide section into the Guide shaft 2. Step 3 Insert the tip of the Guide shaft 1 into the hole of the Guide B. Step 4 Attach the guide shaft to the guide A. Step 5 Attach the spring and spring support.
CAUTION After assembly, apply the screw lock.
8.2.5.2.
Assembly of Traverse Motor
· Tie the FFC cable around the traverse motor. Then, twist the FFC cable once, and attach to the connector.
31
SA-HT80
8.2.6.
Replacement of the Power IC and constant-voltage transistor
Step 3 Remove the solders of the power IC and constantvoltage transistor terminal.
· Follow the instructions, Step 1 to Step 3 under Section 1. Step 1 Cut the joint sections found in the bottom cover. (6 sections)
Step 4 Remove the screws. Step 5 Remove the screws. Step 6 Remove the two transistor holders.
CAUTION After replacement, the bottom cover will be reassembled. Do not lose it. Step 2 Bend the cut sections of the bottom cover.
CAUTION 1. Before assembling the power IC and constant-voltage transistor, apply some compound grease (RFKX002 or compatible thermal diffusion agents) to the backsides of these units. 2. After replacement of the power IC or constant-voltage transistor, fasten the four screws securely. 3. Use an offset key to fasten the screws.
32
SA-HT80
---Offset key--· We recommend the PROTO offset key, model no. 34-1/4.
8.2.6.1.
Assemble of Bottom Cover
Step 1 Insert the ribs on the bottom cover to the protrusions of the bottom board, and fasten the screw. Step 2 Screw [XTB3+8J]
33
SA-HT80
9 Self-Diagnosis and Replacement of Optical Pickup
During repair, follow the instructions below to perform effective self-diagnosis operation and tilt adjustment. Before using the self-diagnosis function, check that the message, "NO DISC" is displayed on the panel and that the optical pickup has not been replaced. Follow the guidelines to use the self-diagnosis function, and replace the existing optical pickup only when the current-electricity level of the laser drive exceeds 50. Note) Press the POWER button to turn on the power, and take a level before the system is warmed up (within 3 minutes). · Apply the self-diagnosis in case that the message, "NO DISC" is displayed on the panel, the system does not read a disc, or before replacing the optical pickup. 1. The message, "NO DISC" is displayed on the panel, or the system does not seem working properly. 2. Check for the current-electricity level of the laser drive. Check that there is no disc inserted. Press s the button on the system and the SCREEN DISPLAY button on the remote control together. (Figure 5)
3. Skip to the next step if the level is 40 or below. If the level exceeds 50, replace the existing pickup. (Refer to "8.2 Procedures for replacement of main parts and disassembly/reassembly of parts".) After replacement, repeat Step 2. If the level exceeds 40, replace with a new optical pickup as electrostatic break might occur during replacement. 4. Check the optical pickup level. If the level of the optical pickup without replacement is 50 or below, or the level of the replaced pickup is 40 or below, perform the tilt adjustment. (Refer to "11. Tilt adjustment for optical pickup.") 5. Initialize the system. Press s the button on the system and the 10 button on the remote control together. The operation is completed.
34
SA-HT80
10 Lock Mode for Demonstration
This set is equipped with the lock mode for the store demonstration. Detail of Lock mode Lock mode is for a domonstration at the store. A disk tray can't be operated in the lock mode in order to prevent the loss of disk in the store exhibition. When it tries to open a disk tray, it is indicated with "LOCKED" on FL window and a disk tray does not open. This model has two kinds of mode, lock mode A and lock mode B. Lock mode A is invalid for a tray "OPEN/CLOSE" button. Lock mode B is invalid for "OPEN/CLOSE" "PAUSE" "STOP" "SKIP/SEARCH" "SELECTOR" "DISK 1 to 5" button. How to set to lock mode · Lock mode A : Press and hold the "CD STOP" (locate on main body) button and additionaly press the "POWER" (main body or remote control) button, during power on selector is DVD/CD. · Lock mode B : Press and hold the "CD PLAY" (locate on main body) button and additionaly press the "POWER" (main body or remote control) button, during power on selector is DVD/CD. When in Lock mode "LOCKED" will appear on FL window only for 3 seconds and start to play the disk. How to reset from lock mode · Same operation for setting to Lock mode. (Lock mode A and Lock mode B) · Switch off the power source.
35
SA-HT80
11 Tilt Adjustment for Optical Pickup
11.1. Preparation for Adjustment
1. Follow the instructions, Step 1 to Step 5 under Section 2 of [8.2 Procedures for replacement of main parts and disassembly/reassembly of parts]. 2. Remove the front panel. Prepare cardboard on the system, and place the panel there. (Figure 6) 3. Prepare a servicing table, and place the system there.
Insert a hexagon screwdriver into the bottom poles of the system for adjustment.
Figure 7
Figure 6
4. Adjust the tilt level from the underneath of the servicing table, using a hexagon screwdriver. (Figure 7) (Figure 8)
Figure 8
11.2. Adjustment of Optical Pickup
Measuring point Service display on the main unit Adjustment point Tangential adjustment screw Tilt adjustment screw Required tools Hexagon screwdriver (model No. JGS0100) Screw lock (model No. RZZ0L01) Mode Test disc Track 1 (innermost) replay Track DVDT-S15 or DVDT-S01 43 (outmost) replay Adjustment level Adjust to the minimum jitter level.
Figure 9
36
SA-HT80
37
SA-HT80
12 Self-Diagnosis Function and Service Mode
This system is equipped with the self-diagnosis function used for the module board and traverse deck.
12.1. Service Mode Table
Service mode is activated by pressing a combination of buttons on the unit and remote control.
Button on the unit TUNE MODE s 0 5 6 7 9 SCREEN DISPLAY Button on the remote control Application Displays "DVD F_ _ _" for UHF screen. Used for tilt adjustment. Notes Refer to the section, "12.2 SelfDiagnosis Function (UHF Display)". Refer to the section, "11. Tilt Adjustment for Optical Pickup".
Used for checking the segment number and wrapping system. Used for checking the program version. IC6302 check Displays the faulty operation detection of the optical pickup. Refer to the section, "9. Self-Diagnosis and Used for the current-electricity level of Replacement of Optical Pickup." the laser drive. Used for formatting the DVD player. (Restore the manufacture default setting.) *Applied when the microprocessor, its inner parts, or board is replaced. Saves the laser power value.
12.2. Self-Diagnosis Function for Module Board and Traverse Deck (UHF Display)
This system is equipped with the self-diagnosis function convenient for troubleshooting.
Display Method Display Error code displayed DVD U11 during operation DVD H01 DVD H02 DVD H03 DVD H04 DVD H05 DVD H06 Press the s button on DVD F0** the unit and the "0" DVD F1** button on the remote DVD F2** control together. DVD F3** DVD F4** DVD F5** DVD F6** DVD F7** DVD F8**
Diagnosis Details Focus error Disc tray loading error Spindle servo error Traverse error Tracking servo error Detection error Power supply error Disc formatting error Disc code error Decoder LS error SDRAM error ICC BUS error DSC ECC error Microprocessor error Microprocessor error
Check points IC2001, IC2511, IC5201, Optical pickup IC2001, IC2511, Loading motor Spindle motor, IC2501, IC2001 IC2511, IC2001, Stepping motor IC2001, IC2501, IC5201, Optical pickup, Disc IC2511, IC2001 Stepping motor IC1021, IC1121, IC1151, IC6001 If you receive messages listed in the left, refer to the section, "12.3 Repair Examples Based on Error Code".
38
SA-HT80
12.3. Repair Examples Based on Error Code
Refer to this section for repair.
Error Code F0** F103 F4FF F500 F501 F502 F504 F505 F506 F600 F601 F602 F603 F610 F611 F612 F620 F621 F700 F701 F702 F880 F890 F891 F8A0 F893 F894 Failure parts Disc, IC7001 Disc, IC7001 IC6001 Optical pickup, IC2001, IC5201, IC2511, IC2501 IC2001, IC6201 IC2501, IC2511, IC2001, IC5202 IC5202, IC2001 Disc, IC2501, IC2511, IC5202, IC2001 Disc, Optical pickup, IC2001 Disc, IC7001, IC5202, IC2001 Disc, IC7001 Disc, IC5202, IC2001 Disc, IC5202, IC2001 IC7001 IC7001, IC5202, IC2001 IC7001, IC5202, IC2001 Laser drive circuit Laser drive circuit IC6201 IC6201 IC6201 IC6201 IC6201 IC6201 IC6201 IC6302 IC6303
39
SA-HT80
13 Power Adjustment
13.1. Video Output (Brightness Signal) Adjustment
Apply this adjustment after replacing with a circuit board.
Measuring place Video output terminal Adjustment place VR1301 (DAC board) Adjustment mode Test disc Color bar 75% Playback (title DVDT-S15 or DVDT-S01 46):DVDT-S15 Playback (title 12):DVDT-S01 Adjustment level 1000mVp-p±20mV
Required tools Screwdriver, oscilloscope 200mV/div, 10µ sec/div
Purpose: To maintain the compatibility of the video signal output. 1. Connect an oscilloscope to the video output terminal, and set to 75. 2. Rotate the part, VR1301, and adjust the brightness signal (Y+S) level within the range of 1000mVp-p±20mV. (Figure 10) (Figure 11)
Figure 10
Figure 11
40
SA-HT80
13.2. Video Output (Color Signal) Adjustment
Apply this adjustment after replacing with a circuit board.
Measuring place Video output terminal Adjustment place VR1301 (DAC board) Adjustment mode Test disc Color bar 75% Playback (title DVDT-S15 or DVDT-S01 46):DVDT-S15 Playback (title 12):DVDT-S01 Adjustment level 675mVp-p±13mV
Required tools Screwdriver, oscilloscope 200mV/div, 10µ sec/div
Purpose: To maintain the compatibility of the video signal output. 1. Connect an oscilloscope to the video output terminal, and set to 75. 2. Rotate the part, VR1302, and adjust the color signal (C) level within the range of 675mVp-p±13mV. (Figure 12) (Figure 13)
Figure 12
Figure 13
41
SA-HT80
14 Measurement and Adjustments
TUNER SECTION AM-IF ALIGNMENT
INDICATOR (ELECTRONIC VOLTMETER OR OSCILLOSCOPE) Fashion a loop of 450 kHz, 30% Mod. at Point of nonHeadphone Jack (32) several turns of wire 400 Hz interference (on/about Fabricate the plug as and radiate a signal 600 kHz) shown in Fig. 2 and then into the loop antenna connect the lead wires of receiver of the plug to the measuring instrument SIGNAL GENERATOR/ SWEEP GENERATOR CONNECTIONS FREQUENCY RADIO DIAL SETTING ADJUSTMENT (Shown in Fig. 3) REMARKS
Z102 (AM IFT)
Adjust for maximum output
AM-RF ALIGNMENT
SIGNAL GENERATOR/ SWEEP GENERATOR CONNECTIONS FREQUENCY Fashion a loop of several turns of wire and radiate a signal into the loop antenna of receiver Fashion a loop of several turns of wire and radiate a signal into the loop antenna of receiver 522 kHz INDICATOR ADJUSTMENT (ELECTRONIC (Shown in Fig. 3) VOLTMETER OR OSCILLOSCOPE) Tuning capacitor fully Headphone Jack (32) Z101 (AM OSC Coil) closed Fabricate the plug as shown in Fig. 2 and then connect the lead wires of the plug to the measuring instrument Tuning to signal Headphone Jack (32) Z101 (AM ANT Coil) Fabricate the plug as shown in Fig. 2 and then connect the lead wires of the plug to the measuring instrument RADIO DIAL SETTING REMARKS
Adjust for maximum output
603 kHz
Adjust for maximum output
14.1. Alignment Points
TUNER SECTION
42
SA-HT80
15 Illustrations of ICs, Transistor and Diode
43
SA-HT80
16 Terminal Functions of ICs
16.1. IC451 (M38504M6202F): System Control
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 Code VCC VREF AVSS C/SW OUT PWCONT SYNC MUTE B REQ B CS B CLK DATA 0 DATA 1 CLS OPN CNVss TEST ECS RESET X IN X OUT VSS LED STB LED/ECLK LED/EDTA LED CLR PLG SW5 PSTN SW2 SW1 SW3 CCW CW HALH DVD CLK DVD CMD DVD STAT PLG VOLT SW4 KEY2 KEY1 CSEL I/O I I O I O I O O O I O O I I I O I/O O I I I I I O O O I I I I I I Description Power connection terminal Reference voltage input terminal Reference voltage input terminal (Connected to GND.) Not in use. Open. DVD module power control output terminal Power-failure detection signal input terminal Mute control output terminal Serial communication request signal input terminal Serial communication chip select signal output terminal Serial communication clock signal output terminal Serial communication data signal output terminal Serial communication data signal input terminal Tray close signal output terminal Tray open signal output terminal Power input terminal (Connected to GND, through resistance.) Test mode signal input terminal Output terminal of serial signal to EEPROM (Not in use and open.) Reset signal input terminal Crystal oscillator circuit input terminal (f=8MHz) Crystal oscillator circuit output terminal (f=8MHz) Power input terminal (Connected to GND.) Output terminal of serial signal to LED driver Output terminal of serial signal to EEPROM (Not in use and open.) Input and output terminal of serial signal to LED driver (Connected to GND, through resistance.) Output terminal of latch clear signal to LED driver (Not in use and open.) Plunger control signal output terminal Bottom switch detection signal input terminal Position sensor detection signal input terminal Tray position 2 detection switch input terminal Tray position 1 detection switch input terminal Tray open detection switch input terminal Motor drive control signal output terminal (forward rotation) Motor drive control signal output terminal (reverse rotation) Motor drive control signal output terminal (speed) Input terminal of serial communication clock signal to DVD module Input terminal of serial communication command signal to DVD module Input terminal of serial communication status signal to DVD module Plunger voltage failure detection signal input terminal Clump switch detection signal input terminal Operation key 2 signal input terminal (Connected to GND.) Operation key 1 signal input terminal (Connected to GND.) Chip select signal input terminal
44
SA-HT80
17 Block Diagrams
DISC
IC5202
OPTICAL PICK-UP UNIT
DISC MOTOR UNIT (SPINDLE MOTOR)
IC5201
AN8706FHQ-V FEP (FRONT END PROCESSOR)
32,45,46, 63,82
+B
RN5RZ33BA-TR
Regulator
GND1~5
Vcc1~4
44,55, 81,93
+B
Q5201 Switching 3
47 LASER POWER CONTROL AMP 50
+B
SYNC TIMING CONTROL AMP
+B
PHOTO DETECTOR
HEAD AMP
91 92 94 97
AMP
TEOUT
VGA
FEOUT
EQ 51 Vcc 5
+B
ACTUATOR (Focus/Tracking)
28
13
TE
TRAYSET1
TRAYSET2
FE
TRSDRV-B
FGC
FG
SS
TDOFST
FODRV
DRVMUTE
TRDRV
QR2502 Motor drive cont.
QR2501 FG amp.
TRSDRV-A
16
FG
18
FIN
19
RIN
15
FGC
9
SS
3
OPIN1-
4
OPOUT1
6
OPIN2-
7
OPOUT2
26
OPIN4-
25
OPOUT4
23
OPIN3-
22
OPOUT3
28 26 23
A1 A2 A3 EC ECR 11 10
EC ECR
9, 20
1 STBY1/2 BIASIN 2 OPIN1+ 24 OPIN3+
2 3 4 5 6 7 8
H1+ H1H2+ H2H3+ H3VH
IC2501
AN8485SB-E1 SPINDLE MOTOR DRIVE
BRK
12
BRK
IC2511
11 12 13 14 VO2VO2+ VO1VO1+
27
QR2503
OPIN4+ BA5983FM-E2 STEPPING MOTOR, FOCUS/TRACKING COIL DRIVE
18
VO3VO3+ VO4VO4+
M
STEPPING MOTOR
GND Vcc VM
17 16 15
PowVcc1
PowVcc2
PreVcc
13
+B
21
+B
14
28
+B
10
+B
19
+B
8,21
45
GND
VREFC
SA-HT80
+B 10,28,52, 74,106
+B 79, 97
IC7001
75, 96 6,17,27, 49,51,59, 73,116 D.VSS 5VDD DVD-ROM FORMATTER CIRC DAT3 63 115 CDPRE 125,138 +B
MN103007BGA OPTICAL DISC CONTROLLER
D.VDD A.VDD A.VSS 40 41 42 43
FG
SCLK+ SCLKSDAT+ SDATDAT0 60 112
SYNDROME & FORMATTER CHIEN I/F
HOST I/F MPEG I/F
ATAPI
111 FG 7 GI06 8 GI07 1 GI01 14 GI012 16 GI014 120 PWM3A 121 PWM3B 9 GI08 DA5 DMA
TRAYSET1 TRAYSET2 FGC SS BRK EC ECR DRVMUTE
IC2001
MN67705EA DIGITAL SERVO CONTROLLER SYSCLK
XRESET ENS ENC CPUIRQ CPUCLK CPUDTIN CPUDTOUT
PWM18
1 3 6 9 12 14 17 20 PVDD 104 +B 10,30,44,76,86, 116,130 +B 4,15,22 +B 8,18,34,39,56,71,83, 99,107,123,134,142 103
ECC PROCESSOR 118 CLK338 MASH 114 33 34
NRST CPSEN CPCEN
BCU/DRAMC
CGEN VDD
SYSTEM I/F
INTC
S.VDD Vss
35 CPUIRQ 36 37 38 5
SBT1 SBO1
WAITODC
NWR
OSCI1
NINT1
NRD
PVss
FODRV102
27
SBI1 CKIORST
59 37,38,40~43,45~55,57, 62,63,68~70,72~74
60
26 100
GIO5
AD4
DA6
DA7
DA8
IC7302
SWITCH
92 103 104 105
TRSDRV-A TRSDRV-B TDOFST
125 QR2001
TC7SH32FUTL BUFFER AMP
+B
TRDRV
SWITCH QR5201~ QR5203
IC6303 IC7301
TC7SH08FUTL BUFFER AMP
+B
CLK169
+B
X25020S-2R7 EEPROM
NRST
CLK135
SBO1
QR6311
+B
IC6301
PST596JNR RESET
+B
IC6302
JZS0649521C 4M DRAM
+B
RESET
CKIORST
79
IRQ3
82
RST
26~33 35~41
A04 A18
84~91 93~100
AD00 AD15
4
WFH
2
RF
3
WFL
AMUTE
1
WAIT
77
IRQ1
23
OSCI
72
SBO1
70
SBT1
SBT1
WFH
71
SBI1
SBI1
RF
63
AN1
CPSEN CPCEN CPUIRQ SBTDAC WIDE1
60 50 76 59 53
TM7IC
IC6201
TM2IO IRQ0 TM7IOB TM5IO
Vss VDD
MN102L25DFA CPU
19,43, 61,92
17,22,34, 54,66,83
+B
46
SA-HT80
IC3051
MNX7160BT1 16M SDRAM
+B
IC3061
HM5241605T12 4M SDRAM
+B
IC3001
MN677511DE AV DECODER
75 91 26 48 AOUT2 AOUT0 MEMORY INTERFACE 115 STREAM INTERFACE 122 STREAM PARSER AND TIME STAMP READER 143 HOST INTERFACE 160 VIDEO AND AUDIO DECODER SUB-PICTURE DECODER VIDEO INTERFACE NTSC/PAL ENCODER AUDIO INTERFACE 192,197, 202 AOUT1 183 185 184
IC3071
PQ1R33
Regulator
+B
AVDD
IC4241
174
TC7ST04FUTL
+B
Q3211 D/A 206 Y amp. Q3201 D/A 201 4,10,16,22,28,34, 40,46,52,57,63,69, 74,80,86,92,104, 114,135,146,169, 182, +B C amp.
IC6511
PQ1R33
REGULATOR
+B
VDD
176 CKIO
Vss/AVss EXTCK
IC6582
AHC1GU04HDC
XRST SRCK LRCK
+B 10,12
13
4
5
D.VDD CLK2
XWR
XRD
PLL
70
11
A.VDD A.GND D.GND XTAL2I
X6501 (36.864MHz) 7 8
IC6501
BU2185F-E2 SYNTHESIZER XTAL2O
CLK3 14 CLK1
133
132
1,7,13,19,25,31, 37,43,49,53,60, 65,72,77,83,89, 99,124,137,156, 171,180,189,190, 207,208
123
181 179 186
IC6542
AHC1GU04HDC
IC6562
RF WFH
IC6521
Clock select
AHC1GU04HDC
TC7WH157FUTL
+B
IC6563
TC7WH74FUTL
D-TYPE FLIP FLOP
IC6522
TC7WH74FUTL
D-TYPE FLIP FLOP
+B
+B
IC6303
X25020S-2R7 INTERFACE
IC6583
TC7WH74FUTL
Flip flop
+B
CLK135
CLK169
CLK338
47
DACCLK
RSTB
NRST
SRCK
LRCK
SA-HT80
IC1301
PCM1734EB-E2 AUDIO D/A CONVERTER
+B 8,9,15, 20,24
7,10,14, 19,23
2
LRCK SRCK
1 3 27 26
INPUT INTERFACE
DIGITAL FILTER
MODE CONTROL S-LEVEL DAC RIGHT L.P.F. (RIGHT) CMOS AMP (RIGHT) 13
SBT1 SBO1
TIMING CONTROL
MODE CONT.
STBDAC 28 RSTB
22 RSTB
NOISE SHAPER
S-LEVEL DAC LEFT
L.P.F. (LEFT)
CMOS AMP (LEFT) ZERO
16 D1301
21
DACCLK 5
IC1303
PCM1734EB-E2 AUDIO D/A CONVERTER
+B 8,9,15, 20,24
7,10,14, 19,23
2
LRCK SRCK
1 3 27 26
INPUT INTERFACE
DIGITAL FILTER
MODE CONTROL S-LEVEL DAC RIGHT L.P.F. (RIGHT) CMOS AMP (RIGHT) 13 Rch
SBT1 SBO1
TIMING CONTROL
MODE CONT.
STBDAC 28 RSTB
22
NOISE SHAPER RSTB
S-LEVEL DAC LEFT
L.P.F. (LEFT)
CMOS AMP (LEFT)
16
DACCLK 5
21 ZERO
D1303
IC1302
PCM1734EB-E2 AUDIO D/A CONVERTER
+B 8,9,15, 20,24
7,10,14, 19,23
2
LRCK SRCK
1 3 27 26
INPUT INTERFACE
DIGITAL FILTER
MODE CONTROL S-LEVEL DAC RIGHT L.P.F. (RIGHT) CMOS AMP (RIGHT) 13 Rch
SBT1 SBO1
TIMING CONTROL
MODE CONT.
STBDAC 28 RSTB
22 RSTB
NOISE SHAPER
S-LEVEL DAC LEFT
L.P.F. (LEFT)
CMOS AMP (LEFT) ZERO
16
DACCLK 5
21
D1302
48
ZERG
SA-HT80
C CH
L CH
SW
IC708
M5218AFPE3
MIX amp.
IC704
M5228FPE1
Buffer amp. Muting Q702
IC704
M5228FPE1
Buffer amp. Muting Q701
IC703
M5218AFPE3
Buffer amp.
IC704
M5228FPE1
Buffer amp.
Muting
Q705 (Q706)
Muting
Q703 (Q704)
Q707~Q709, Q722 Muting cont.
+B
AMUTE
MUTE
ZERG
IC1307
AN3581S-E1 VIDEO OUT
CL VV OSD Q1301,Q1302 Y Signal Control 3 CL OSD CL EE
+B
S1 OSD M H
FE
DVDL
SL
LET 19
S-VIDEO OUT Y
S2 -3.5dB VV -9.5dB LET YC MIX EE,CPS,OSD EE 9.5dB 16 S3
C
6 15
Vcc Vcc2
VIDEO OUT
Q1303,Q1304 C Signal Control 11
S4
12dB
S5
0dB 14 KILLER OSD OFF Q1305
VV 2.0V CGND 10 D.GND 18 Y GND 2
Switch Control
49
WIDE1
SA-HT80
Q712,Q713
+B
Regulator/ stabilizer Q714,Q715
D729
L701
+B
Q718,Q719 L702 L704 Power Supply L703
Q720 Regulator
D723~726 T501 (POWER TRANSFORMER)
+B
Regulator/ stabilizer
IC707
LM2940T5M
Q751
+B
IC706
FA7612NTE2
DC-DC converter Q716 Switch DC det.
Regulator Q710,Q711
+B
Regulator/ stabilizer
DC DET MECHRS MECHSO MECHSI MECHCK MECHCS MECHRQ /TUN
Q717 Switch
+B
X451 (8MHz)
+B
8
B REQ
MUTE
9
B CS
10
B CLK
11
DATA O
12
DATA I
18
REST
6
SYNC
5
PWCONT
42
CSEL
16
TEST
2
VREF
1
VCC
41
KEY1
40
KEY2
19
X IN
20
X OUT
42
RGN CS SW3
7
MUTE
TR CLS
13
CLS
DVD STAT DVD CMD
IC451
DVD CLK
TR OPN
14
OPN
M38504M6211F SYSTEM CONTROL
CNVSS HALF PLG VOLT PSTN AVSS CCW SW5 PLG SW1 SW2 SW4 VSS CW
35
DCLK DCMD
36
37
21
15
3
34
33
32
38
26 Q453, Q454
28
27
30
S1 (TRAY POSITION 1 DET.)
29
S2 (TRAY POSITION 2 DET.)
31
S3 (OPEN DET.)
39
S5 (BOTTOM)
+B
DSTAT
Plunger drive
PLUNGER Q1
IC1304
TC74HCT7007A 3V-5V LEVEL SHIFT
2 4 5
D2
Motor drive
+B
M
10 RM1 (LOADING MOTOR) 6 D1 (POSITION SENSOR) 1 7,8
IC1
TA7291P MOTOR DRIVE
+B
50
S4 (CLAMP)
SA-HT80
FM ANT
1
Z120 (FM FRONT END) 7
AM ANT
CF201 AM ANT coil FM IF Q101,Q102 amp. Z101 AM OSC coil
RF amp.
FM mixer
+B
5
Local OSC 3 4 6
+B
Buffer amp. 8 CF202
IC101 LA1833NMNTLM FM / AM I F AMP, DET / AM OSC, MIX / FM MPX
Rch
3
REG
22
AFC
23
OSC
21
AM RF IN
20
AGC
19
AM OUT
18
DET OUT
17
PILOT IN
16
MPX IN
15
PILOT OUT
13
Lch
14
Rch
Decoder
24
OSC OUT
ALC Buffer
AM OSC
AM MIX
AM RF amp.
AGC Phase det. Stereo switch Pilot cancel
Level det. 1
FM IF IN
AM IF
AM det.
AM/FM
S-curve FM det.
FMDET AM MIX OUT
FM IF
IF buffer
Tuning Drive
Comp. VCO FF FF FF Pilot det.
FM/AM
AM IF IN
MONO
STRQ
Vcc
SD
GND
9
+B
8 X102 (10.6MHz)
2
Z102 AM IFT
4
6
10
5
+B
11 + +
12
ST
7
SD
18
AOUT
17 16
AIN PD
XIN
1
X103 (7.2MHz)
Phase detector charge pump
Reference divider
XOUT
20 14
11
IFIN
Swallow counter 1/6,1/17 4bit
1/2
FM IN
IC102 LC72131MDTRM PLL FREQUENCY SYNTHESIZER
12 bit programmable divider
AM IN
13
CE
+B
15
VDD
Universal counter Power ON reset
FM
DI
Data shift register latch
CL DO AM
2 3 4 5 6
SER7 SER3 SER4 DO/ST
(FM)
+B
Q106 Power supply
(FM:ON)
10
LW
12
7
SDC
8
STRQ
19
Vss
MONO
9
51
SA-HT80
78 (67)
E Rch D JK703 6 LINE OUT (59) LCH(RCH)
AUX3 TAPE PLAY BACK
DVDL
77 (68)
Rch
76 (69)
C
80 65
AUX1 PHONO/ AUX
74 (71)
A
Rch NF 64 2
75 (70)
B 1 8 (57)
AUX2 VIDEO/ MD
79 (66)
+B
F
36 31
OFF AVDD DVDD 72
-B
IC201 M62433AFP DIGITAL SOUND CONTROLLER
DGND
AVSS
AGND
Graphic equalizer
Microcomputer interface
29
73
35
3 (63)
61
4 (62)
28 27 26 24 23 22 (37) (38) (39) (41) (42) (43) NF
9~20 (45~56) Filter
21 (44)
30
5 (60)
7 (58)
32
33
34
IC804 BU4053BCFE2 SIGNAL SELECTOR
12(5) 7
-B
L CH VSS X0 X1
13(3)
14(4) 2
Y0 C CH
1 8
Y1
15 16
G A
SW CONT.
B C
VDD INH
+B
9
MIC
10
11
6
DSP TL(R) L(R) OUT SR L(R) SUR L(R) C OUT2 C OUT1 FQ L(R) INT1
A1
B1
C1
VR601 (VOLUME)
KEY SWITCH (S621~626, 631~636, 641~647)
9
JOG1B
10
JOG1A
6~8
KEY1~3
SER4
30
SER4
32
SER2
28
SER5
IC601 M38199MF231F SYSTEM CONTROL / FL DRIVE
DO/ST SD IN SER3 AVSS CRT VSS
MECH RS
MECH SO
MECH RQ
MECH CK
MECH SI
MECH CS
97
21
23
22
20
19
SER7
26
44
31
43
11
99
40
D651
MECHCK MECHSO MECHRQ MECHRS MECHSI MECHCS SER7 DO/ST SER3
52
SD
SER2
SA-HT80
IC801
D CS D DA D CLK ERR
TC9472F-001 DIGITAL SOUND CONTROLLER
81 82~85
+B
+B
D RST
+B
80
BOUT
79
BA0
78
BA1
75
IFOK
74
IFDO
71
/CS
73
IFDI
72
IFCK
76
/ERR
69
DOUT
68
DIN
67
EBCI
66
EBCO
14
GNDAC
65
ELRI
64
ELRO
63
SYNC
59
STEP1
53
MCK
50
CKO1
49
CKO0
48
FS
61
/RESET
60
STEP0
+B
VDD TST0~3 VDM VRM1 MIN MOUT VRM2 GNDM VSAL (VSAR) LIN(RIN)
86 87 88 89 90 91 92(99) 93(98) 94(97) 7(10) 17
Self boot
MICOM I/F
D-IN/OUT
Timing generator
TP0~13
ADC (MIC)
ASP (Audio digital signal processor)
Delay RAM (4kword x 16bit)
GND
32~36, 40~47, 52 31,51, 70 58 57 18 8(9)
+B
Polygonal line cancellation Running average filter
EM1
Decimation filter
Inter-polation filter
EM0
ADC Lch(Rch)
VDAC VDAL (VDAR)
+B
AVRL (AVRR) VRL (VRR) VRC
Timig generator
DAC(L/Rch) ATT
GNDAL (GNDAR) AOLT (AORT) AOL (AOR)
DAC(Cch) ATT
AOCT AOSL (AOSR) AOC
DAC (SL/Rch) ATT
GNDASL (GNDASR) AOSLT (AOSRT) VDASL (VDASR) VRSL (VRSR)
VDDR
38 37,54, 62
+B
VDD
20
VDL (VDR)
VRI
95 (96)
+B
1
2
4 (13)
5 (12)
6 (11)
15
16
X801 (33.8MHz)
SL
IC802 BU4053BCFE2 SIGNAL SELECTOR
13(3)
X1
24 (27)
22 25 23 21 (28) (30) (29) (26)
+B
3
+B
Buffer amp.
14(4)
VSS
7
-B
X0 Y1
IC805 M5218AFPE3
Buffer amp.
12(5) 1 2
SW
IC803 M5218AFPE3
15
Y0
8
G A
SW CONT.
B C
16
VDD INH S.W OUT SUR L(R)
+B
DSP TL(R)
L(R) OUT
9
C2
10
11
6
INT2 C OUT2
MIC
DSPACK
DSPRST
15
DSP ACK
14
DSP RST
IC601 M38199MF231F SYSTEM CONTROL / FL DRIVE
AND1~38/ REG1~12 GRD1~7 REG IN MBP1
XC OUT
XC IN
MBP2
X OUT
X IN
37
36
42 Switch (MBP)
39
38
41 Switch (MBP)
48~54
55~90, 92,93
95 D668,669, 672,674,675
X601 (32.7kHz)
Q603
X602 (8MHz)
Q602
FL601 FL DISPLAY FROM POWER TRANSFORMER
53
SUB.W MUTE
SUB.W MUTE
94
VDX
XO
XI
SA-HT80
IC207 M5228FPE1
SR L(R)
Q211 (Q212)
Muting Q205 (Q206)
IC204 M5218AP
Buffer amp.
Buffer amp.
IC205 M5228FPE1
Buffer amp.
Q210 Muting cont.
Muting
A
Q204 Muting cont.
IC206 M5218AFPE3
Buffer amp. Q808,809 ATT
IC207 M5228FPE1
Buffer amp.
IC205 M5228FPE1
Buffer amp.
Q207,208
SUB. WOOF
ATT
FQ L(R)
NF 41 (32)
TIN3(4)
NF
+B
24
PORT6
20
PORT2
40 (31)
TNF3(4)
39 (30)
TOUT3(4)
38 (29)
VIN3(4)
37 (28)
BB3(4)
36 (27)
VNF3(4)
35 (26)
VOUT3(4)
12
VNF2
13
VOUT2
34
GND2
33
GND3
7
GND1
23
PORT5
22
PORT4
42
AVDD
S.W OUT
8
INT2
MCU I/F
TOUT1 VOUT1 TOUT2 PORT1 LATCH CLOCK
DGND
TNF1
VNF1
TNF2
VIN1
VIN2
1
C OUT1
2
3
4
5
6
9
10 Q213 Muting cont.
11 Q214 Muting
25
-B
AVss
INT1
19
14
15
16
17
18
DVDD
DATA
+B
NF
IC207 M5228FPE1
Buffer amp.
IC208 M62444FPE1 SOUND CONTROLLER (VOLUME CONT.)
C MUT
A
Q227,Q228
SER2 SER6 SER4 DCDET
ATT
CF
SER6
/TUNER
PHONESW
PCONT
LED drive Q609,Q616 D691 D615 ( )
-B
27
SER6
16
SER9
17
PHONE SW
18
PCONT
98
-VP
Q223~ Q226 96 ATT
IC601 M38199MF231F SYSTEM CONTROL / FL DRIVE
RESET WAKE LED VREF D1~5 LED RMT VCC
DCDET
M
SYNC
1~5 Q610~Q615
12 LED drive
29
35
100
91
34
Reset D653 Z601 (REMOTE SENSOR)
Q601, D656
+B
D631~D636 (WAKE,1~5)
+B
D653
+B
D652
+B
54
SYNC
SER9
SA-HT80
JK603 PHONES
IC501 RSN311W64-P POWER AMP
15 20 3 Power control circuit 6
+B
R ch
Q521 Stabilizer
+B
D209
D601
+B
Q519 Switch
26 (25)
1 (2) LCH SURROUND SPEAKER (6)
18 (19)
12 (11) LCH MAIN SPEAKER (6)
22 8 LCH SUBWOOFER SPEAKER (6)
23
5 LCH CENTER SPEAKER (6)
24
9 Power control/ protection circuit 14 DC det. Q515, Q516
GND
13
16
21 10
4
7 D602
-B
N
Q217~Q218 D202~D206 DC det. drive
+B -B
PHONESW
Q522, Stabilizer Q523
-B
DC DET
SUB.WOOF/ SUB.W MUTE
DSPACK
/TUNER
SER4
DRST
D CLK
INH1
ERR
B1
C1
C MUT
SER9
D DA
SER2
D CS
A1
C2
/RST
INT2
C.F
D806
D805
D807
D804
D808
Q802 Power Supply Cont. Q801 Power supply
+B
44
DSP DA
1
DSP CLK
2
ACK
4
DSP LA
8
INH1
14
/RESET
42
D CLK
41
D DA
22
C.F
20
P1
21
P2
31
D RST
39
D CS
3
ERR
5
A1
6
B1
7
C1
11
C2
12
INT2
37
STOP
XC OUT
KEY0~4
IC806 T87CH47U1E42 SYSTEM CONTROL
TEST SW1 SW3 SW2 Vss
XC IN
VAREF
15
16
13
17
29
30
43
32~36
18
40
+B
X802 (8MHz)
+B
55
VDD
SA-HT80
SIGNAL LINES MAIN SIGNAL LINE FM OSC SIGNAL LINE FM SIGNAL LINE CD SIGNAL LINE AM OSC SIGNAL LINE RECORDING SIGNAL LINE AM SIGNAL LINE FM & AM SIGNALS LINE MIC SIGNAL LINE PLAYBACK SIGNAL LINE CD/DVD (AUDIO) SIGNAL LINE DVD (VIDEO) SIGNAL LINE
(
) indicates Pin No. Right Channel.
Q505 Relay drive
PCONT
Q520
-B
Q504 Regulator
D503,D504, D506,D532
T501
Stabilizer
Q503
+B
Q501 Regulator
Q502 Regulator
D501,D502, D505,D533
+B
Regulator Q222 Regulator
D500 RLY502 AC IN
Q221
+B
Q507 D538
+B
Regulator
Q508
+B
POWER TRANSFORMER
Stabilizer
F1
L500
Regulator
Z501
Q510
/TUN
Q509 Switch Q512 D507,D508, D547,D548
Power Supply Cont.
+B
Regulator
Q216
-B
D501,D502,D509, D510,D530,D531
Regulator
TO FL DISPLAY
T502 Q592,D598
+B
D592
Regulator
Q594
SYNC
Switch (SYNC)
56
POWER TRANSFORMER
SA-HT80
18 Schematic Diagram
(All schematic diagrams may be modified at any time with the development of the new technology) Note: (For Panel Circuit, Tact Switch and CD Tact Switch)
S642 S643 S644 S645 S646 S647 VR601
Virtual rear select switch Multi rear select switch Center_Focus select switch Sub woofer lever select switch SFC select switch Selector switch Volume control
(For DAC Circuit) S621 Power switch S622 DISC 1 select switch VR1301 Y level adjustment VR S623 DISC 2 select switch VR1302 C level adjustment VR S624 DISC 3 select switch S625 DISC 4 select switch S626 DISC 5 select switch (For Loading Motor Circuit, Detecting Switch (1) Circuit S631 FM mode, pause select switch and Detecting Switch (2) Circuit) S632 FWD play, tune adjust up switch SW1, SW2 Tray position switch S633 Reverse play, tune adjust down switch SW3 Tray open switch S634 Play/Memory select switch SW4 CD offset detect switch S635 Open/close, eject switch SW5 Spindle bottom position detect switch S636 Tune mode, stop select switch S641 Dolby pro logic select switch · The voltage value and waveforms are the reference voltage of this unit measured by DC electronic voltmeter (high impedance) and oscilloscope on the basis of chassis. Accordingly, there may arise some error in voltage values and waveforms depending upon the internal impedance of the tester or the measuring unit.
· Importance safety notice: Components identified by mark have special characteristics important for safety. Furthermore, special parts which have purposes of fire-retardant (resistors), high-quality sound (capacitors), low-noise (resistors), etc. are used. When replacing any of components, be sure to use only manufacturer“s specified parts shown in the parts list. Caution! IC, LSI and VLSI are sensitive to static electricity. Secondary trouble can be prevented by taking care during repair. · Cover the parts boxes made of plastics with aluminium foil. · Put a conductive mat on the work table. · Ground the soldering iron. · Do not touch the pins of IC, LSI or VLSI with fingers directly.
57
SA-HT80
SCHEMATIC DIAGRAM-1
DVD SERVO CIRCUIT
DIGITAL SERVO CONTROLLER
58
SA-HT80
SCHEMATIC DIAGRAM-2
DIGITAL SERVO CONTROLLER
59
SA-HT80
SCHEMATIC DIAGRAM-3
IC2511 STEPPING MOTOR, FOCUS/TRACKING COIL DRIVE
SPINDLE MOTOR DRIVE
60
SA-HT80
SCHEMATIC DIAGRAM-4
IC2511 STEPPING MOTOR, FOCUS/TRACKING COIL DRIVE
TO DAC CIRCUIT (CN1303) ON SCHEMATIC DIAGRAM-16
SPINDLE MOTOR DRIVE
61
SA-HT80
SCHEMATIC DIAGRAM-5
16M SDRAM
4M SDRAM
AV DECODER
62
SA-HT80
SCHEMATIC DIAGRAM-6
4M SDRAM
REGULATOR
INVERTER
63
SA-HT80
SCHEMATIC DIAGRAM-7
REGULATOR
64
SA-HT80
SCHEMATIC DIAGRAM-8
FEP (FRONT END PROCESSOR)
65
SA-HT80
SCHEMATIC DIAGRAM-9
RESET
CPU
66
SA-HT80
SCHEMATIC DIAGRAM-10
RESET
EEPROM
JZS0649521C 4M DRAM
67
SA-HT80
SCHEMATIC DIAGRAM-11
CLOCK SELECT
3.3V REGULATOR
D-TYPE FF
INVERTER
SYNTHESIZER D-TYPE FF
INVERTER
INVERTER
FLIP FLOP
68
SA-HT80
SCHEMATIC DIAGRAM-12
TO DVD CIRCUIT (CP6251) ON SCHEMATIC DIAGRAM-17
TO DAC CIRCUIT (CN1301) ON SCHEMATIC DIAGRAM-15
TO DVD CIRCUIT (CN1302) ON SCHEMATIC DIAGRAM-16
69
SA-HT80
SCHEMATIC DIAGRAM-13
OPTICAL DISC CONTROLLER
BUFFER AMP
BUFFER AMP
70
SA-HT80
SCHEMATIC DIAGRAM-14
OPTICAL DISC CONTROLLER
71
SA-HT80
SCHEMATIC DIAGRAM - 15
DAC CIRCUIT
: +B signal line
: DVD Video Signal Line
L1304 33uH Q1302 C1333 0.01 {{4.9V}}
2SB709ATX
Y SIGNAL CONTROL
R1302 1.2K
Q1302
CN1301 Y AGND C AGND 4 WIDE2 5 1 2 3 R1306 560 1
VR1301 10K
{{2.1V}} {{2.7V}}
Q1301
Q1301
2SD601ATX
Z1301 3 ELB4K163B VIDEO LPF 2
R1304 100 {{2.8V}} R1305 10K
Y SIGNAL CONTROL
{{1.5V}} R1303 1.5K
{{0V}}
TO DVD SERVO CIRCUIT (FP3202) ON SCHEMATIC DIAGRAM-12
WIDE1 AGND DVDH NR CB/B AGND CR/R AGND
6 7 8 9 10 11 12 13 R1313 560 1 15 C1334 0.01 Z1302 3 ELB4K164B VIDEO BPF 2 R1312 2.7K R1310 220 {{2.1V}} {{2.7V}} R1311 15K {{0V}} C1335 6.3V100 R1307 2.2K Q1304 R1308 820 C1348 0.01 {{4.9V}} R1309 22K VR1302 10K {{2.8V}} {{3.4V}}
2SB709ATX
C SIGNAL CONTROL
Q1303
Q1303
2SD601ATX
C SIGNAL CONTROL
Y/G AGND
14
Q1304
L1305 33uH C1338 6.3V100 C1339 6.3V47 {{2.1V}} {{2.6V}} {{4.9V}} {{2.1V}} R1323 10K {{4.9V}} C1337 0.01 C1336 0.01 AV+5V
{{4.9V}}
{{0V}}
{{0V}}
{{2V}}
{{0V}} 10 CGND ACK 13 {{0V}}
1 VVY2
2 YGND
3 Y
4 EEH
5 OSDY
6 VCC
7 VVY1
8 OSD
9 OSDC
{{2V}} 11 C 12 {{2V}} VVC
IC1307
IC1307
YOUT CPS YFB LET
AN3581S-E1
VIDEO OUT DGND VOUT VCC2 15 {{4.9V}} {{2.4V}} COUT 14 VFB 17 {{0V}}
22 {{0V}}
21 {{0V}}
20 {{1.9V}}
19 {{2.6V}}
18 {{0V}}
16 {{2.6V}}
L1306 33uH
C1342 6.3V330
C1350 6.3V330
C1344 6.3V330
C1349 6.3V330
C1346 6.3V220
C1347 0.01
C1343 16V10
C1345 0.01
H1305 (CN1305) W1305 YOUT 1 1
C1341 16V10
R1320 4.7K
R1335 10K
R1334 10K
TO POWER CIRCUIT (W1305/H1305) ON SCHEMATIC DIAGRAM-30
R1315 1K
3 4
COUT
3 4 R1318 75 R1319 75 R1321 75
R1314 1K
R1317 470
R1316 1K
2
2
{{0V}}
Q1305
2SD601ATX
{{0V}} {{0V}} SWITCH CONTROL
VOUT 5 6 5 6
Q1305
R1322 10K DCLK DSPCLK STS STATUS IC1304
TC74HCT7007A
3V-5V LEVEL SHIFT {{4.5V}} {{2.9V}} {{4.1V}} {{2.8V}} {{4.9V}} {{3.2V}} D1304 MA111TX {{0V}}
NRST R1301 10K
7
6
5
4
3
2
1
CONNECTOR CIRCUIT
CN1351 1 2 L1351 600uH 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
GND
IC1304
VCC 8 {{4.9V}} {{4.9V}} 9 10 {{4.9V}} 11 {{4.9V}} 12 {{0V}} 13 {{4.9V}} 14 {{4.9V}} C1332 0.1
C1351 1000P
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
CN1352
72
SA-HT80
SCHEMATIC DIAGRAM - 16
: +B signal line
: DVD Video Signal Line
SB01 SBT1 STBDAC C1328 0.01 D1301 MA111TX R1331 10K {{3.2V}} {{3.8V}} {{3.2V}} {{4.9V}} {{4.9V}} {{4.9V}} {{4.9V}} {{2.5V}} {{0V}} {{0V}} {{0V}} C1302 16V10 {{2.5V}} {{4.9V}} {{0V}} AUDC R1325 100 AUDSL 5 6 AUDSR VCC1 C1303 100P AUDC C1308 6.3V330 C1307 0.1 7 8 9 10 L1301 100uH C1304 100P AUDSW 11 12 ZERG 13 AMUTE D+5V R1326 100 AUDSW 16 OPT 17 SRCK C1305 0.1 18 19 20 21 AV+5V SB01 SBT1 STBDAC C1329 0.01 D1302 MA111TX R1332 10K {{3.2V}} {{3.8V}} {{3.2V}} {{4.9V}} {{4.9V}} {{4.9V}} {{2.5V}} {{0V}} {{0V}} {{0V}} {{0V}} AUDSL C1310 16V10 {{2.5V}} {{0V}} {{0V}} CN1303 R1327 100 TMPSNCE 1 2 VCC1 C1311 100P C1316 6.3V330 3 4 TRAY_OPEN 5 6 7 C1312 100P LOAD_M+ LOAD_MC1315 0.1 DGND TRAY_CLOSE DGND DCLK C1309 0.1 DCMD STS 22 23 24 25 26 D_GND TR_OPN TR_CLS VGND AV+5V D_GND DCMD STS DCLK 14 15 AMUTE D+5V D_GND SGND AUDSR SGND AUDC SGND AUDSW A+5V ZERG AUDFR C1301 0.1 CN1304 AUDFL 1 2 3 4 AUDSL SGND AUDFR SGND AUDFL
28 ML
27 MC
26 MD
25 MUTE
24 MODE
23 CS
22 RSTB
21 ZERO
20 VCC2L
19 AGND2L
18 EXTL
17 NC
16 VOUTL
15
IC1301
BCKIN LRCIN CLK0 DIN
IC1301
PCM1734EB-E2
AGND2R D/A CONVERTER DGND XT1 XT0 VOUTR AGND1 VCC2R EXTR VDD NC
1 {{0V}} {{1.6V}}
2 {{1.6V}}
3 {{0V}}
4 {{1.6V}}
5 {{4.5V}}
6 {{0V}}
7 {{4.9V}}
8 {{4.9V}}
9
10 {{0V}}
11 {{2.5V}}
12 {{0V}}
13 {{2.5V}}
14 {{0V}}
TO DVD CIRCUIT (CN1304) ON SCHEMATIC DIAGRAM-17
LRCK AOUT2
C1306 16V10
28 ML
27 MC
26 MD
25 MUTE
24 MODE
23 CS
22 RSTB
21 ZERO
20 VCC2L
19 AGND2L
18 EXTL
17 NC
16 VOUTL
15
IC1302
BCKIN LRCIN CLK0 DIN
IC1302
PCM1734EB-E2
AGND2R D/A CONVERTER DGND XT1 XT0 VOUTR VDD AGND1 VCC2R EXTR NC
TO DVD SERVO CIRCUIT (FP2511) ON SCHEMATIC DIAGRAM-4
1 {{0V}} {{1.6V}}
2 {{1.6V}}
3 {{2.2V}}
4 {{1.6V}}
5 {{4.5V}}
6 {{0V}}
7 {{4.9V}}
8 {{4.9V}}
9
10 {{0V}}
11 {{2.5V}}
12 {{0V}}
13 {{2.5V}}
14 {{0V}}
LRCK AOUT1 SRCK
C1314 16V10 C1313 0.1
R1328 100
AUDSR
DACCLK
L1303 600uH 1 2
CN1302 DACCLK DGND SRCK DGND 4
SRCK
3
LRCK 5 AOUT0 6 7 AOUT1 SB01 AOUT2 SBT1 STBDAC C1330 0.01 D1303 MA111TX R1333 10K {{3.3V}} {{3.8V}} {{3.2V}} {{4.9V}} {{4.9V}} {{4.9V}} {{4.9V}} {{4.9V}} {{2.5V}} {{0V}} {{0V}} AUDFL C1318 16V10 {{2.5V}} {{4.9V}} {{0V}} 14 R1329 100 NRST C1319 100P SBT1 C1323 6.3V330 C1322 0.1 SBO1 15 16 AMUTE 13 11 12 C1317 0.1 STBDAC 8 9 10
LRCK AOUT0 DGND AOUT1 AOUT2 STBDAC AUDIODIGITAL DGND AMUT AC3H DSPNRST NRST STBEV 17 18 19 20 21 DGND SBT1 SBO1 SBI1 STBSP CMD STATUS 24 DGND 25
TO DVD SERVO CIRCUIT (FP4202) ON SCHEMATIC DIAGRAM-12
28 ML
27 MC
26 MD
25 MUTE
24 MODE
23 CS
22 RSTB
21 ZERO
20 VCC2L
19 AGND2L
18 EXTL
17 NC
16 VOUTL VOUTR
15 VCC1 AGND1
D+5V LRCIN
IC1303
BCKIN CLK0 DIN
IC1303
PCM1734EB-E2
DGND VCC2R AGND2R D/A CONVERTER XT1 XT0 EXTR VDD NC
C1320 100P
22 DCMD STATUS 23
ZERG {{1.6V}}
1 {{0.8V}}
2 {{1.6V}}
3 {{0V}}
4 {{1.6V}}
5 {{4.5V}}
6 {{0V}}
7 {{4.9V}}
8 {{4.9V}}
9
10 {{0V}}
11 {{2.5V}}
12 {{0V}}
13 {{2.5V}}
14 {{0V}}
LRCK AOUT0
C1325 16V10 C1324 0.1 C1321 0.1
R1330 100
AUDFR
DSPCLK 26
DSPCLK
SRCK DACCLK
C1326 0.1
E1301
C1327 0.1
73
SA-HT80
SCHEMATIC DIAGRAM - 17
: +B signal line : -B signal line : Audio signal line : Surround speaker signal line : Center speaker signal line : Subwoofer speaker signal line
MOTOR CIRCUIT
IC1 TA7291P
MOTOR DRIVE 1 2 0.6V 3 4 7.8V F 5 5V E 6 5V 7 7.8V 8 7.8V C2 0.01 RM1 (LOADING MOTOR) R1 1K 1 2 3 W2 1 2 3 D
C1 16V100
DVD CIRCUIT
Q453 2SB621ARTA
PLUNGER DRIVE 9 10
D455 MA111TX
0V
9V
R473 10K R496 220
0.6V
9V
R474 1K
CD DETACT CIRCUIT
SW4
M
7.8V
Q454 KRC102MTA
PLUNGER DRIVE
9V
0V
D2 MTZJ4R7BTA
PLUNGER A B
CN1
SPINDLE POSITION CIRCUIT
SW5 1 2 3 4 C D1 GP1S94 (POSITION SENSOR) E Ca A W1 1 2 3 4 A B C
Q1 RVTDTC143EST
MOTOR DRIVE
4.7K 4.7K
SW2
C
5.8V
SW1
0V SW3
D E F
1 2 3 4 5 6 7 8 9 10 11 12 13 14
1 2 3 4 5 6 7 8 9 10 11 12 13 14
CN1 A B
C D E F G H I J K
L452
C455 0.01
10
C467 0.01
H
R477 10K
C721 16V10 A+5V A.GND D+3.3V D.GND D+3.3V D.GND D+5V D.GND M+9V M.GND CP6251 1 2 3 4 5 6 7 8 9 10
0.1 6.3V100
C C702 16V10 F
R704 100K R710 27K R708 22K
R731 C705 470P
R729 100K
10K
R741 1K
C729 16V22
Q701-706 2SD2144STA
MUTING
TO DVD SERVO CIRCUIT (P6251) ON SCHEMATIC DIAGRAM-12
R733 22K
C736 C786
C707 47P
C727 47P
R737 18K
C779 0.01
(-2.8V)
Q703
C713 2200P R718 47K
IC704 M5228FPE1
C783 25V2200
BUFFER AMP 1
0V 2
0V 3 4
7.4V 5 6 Vcc
0V 7
0V
R714 Q702 1K 0.7V (-2.8V) R716 C711 1K 16V22 C710 16V22 R715 1K 0V
R743 47K
0V
C731 2200P
R706 10K
C708 0.1
C725 470P
R739 1K 0.7V
C785 0.01
Vss 14 R703 100K 0V 13 0V 12 11 10 -7.2V 9 0V 8 0V
(-2.8V)
Q701
C728
R709 18K R707 22K C709 0.1
47P
R738 18K C732 2200P R744 47K
C701 16V10 CN1304 AUD FL S.GND AUD FR S.GND AUD SL S.GND AUD SR S.GND AUD C S.GND AUD SW A+5V ZERG A MUTE D+5V D.GND OPT D.GND TR.OPN TR.CLS V.GND AV+5V D.GND DCMD STS DCLK 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 A D B C D E F A E
R705 10K
C706 47P
R732 10K R757 18K
R734 22K
R740 Q704 1K 0.7V (-2.8V) C730 R742 16V22 1K R761 1K C749 16V22 0V
R717 47K
0V
C712 2200P
R713 1K 0.7V
C741 16V10
R730 100K
R751 10K
R753 22K
C745 47P
C726 470P
C722 16V10
C704 470P
R749 100K
C743 470P
IC703 M5218AFPE3
BUFFER AMP
R750 100K
5
6
7
8
2200P
0V
0V
7.4V
(-2.8V)
R763 47K
0V
C757 2200P
R759 1K 0.7V
C723
TO DAC CIRCUIT (CN1304) ON SCHEMATIC DIAGRAM-16
C748
Q705
C758 2200P R764 47K
C737 0.01
A B
C744 470P
0.01
R760 Q706 1K 0.7V (-2.8V) R762 C750 1K 16V22 0V
C742 16V10 B
R752 10K
C747 2200P
4 -7.2V
3
2 0V C746 47P 18K
1 0V
C D E
R754 22K R758
7.4V -7.2V
F G H
5V 5V 3.3V 5V 9V
74
R476
12K
C733 16V22
C715 16V22 C714 16V22
C734 16V22 C755 16V22
C756 16V22
SA-HT80
SCHEMATIC DIAGRAM - 18
: +B signal line : -B signal line : Audio signal line : Surround speaker signal line : Center speaker signal line : Subwoofer speaker signal line
9V 7.8V
1.7V P-P R454 10K
D704 MA111TX
J
I
C
D
E
M
L
K
O
N
P
SWITCHING 5V
10K 220 100K
0V
C453 0.01
F=8MHz
C456 0.01
0.022
220
220
1K
220
220
220
220
220
X451 (8MHz) 1 2 3 R460 680
PLAY
R485
4.8V 0V
R458
R457
R456
R475
R491
R489 R488
C452
R490
R459
R455
T
10ms.
2.2V
2.1V
4.8V
3.2V
0.9V
2.9V
1.2V
0.9V
5V
0V
0V
0V
0V
5V
5V
1.8V P-P F=8MHz
5V
21
Vss
20
X OUT
19
X IN
18
REST
17
ECS
16
TEST
15
CNVss
14
OPN
13
CLS
12
DATA I
11
DATA O
10
B CLK
9
B CS
8
B REQ
7
MUTE
6
SYNC
5
PWCONT
4
C/ SW OUT
3
AVss
2
VREF
1
Vcc
PLAY
4.8V 0V
T
10ms. PLAY
PLAY
LED/ EDTA LED/ ECLK
4.8V 0V
DVD STAT
T
PLG
10ms.
PSTN SW5 SW2
DVD CLK
LED CLR
LED STB
SYSTEM CONTROL
HALH CCW SW1 SW3 CW
PLG VOLT
IC451 M38504M6211F
DVD CMD
CSEL
22
23
24
0V
25
26
0V
27
5V
28
0V
29
0V
30
0V
31
5V
32
5V
33
5V
34
0V
35
4.3V
36
3.1V
37
3.9V
38
0V
39
1V
40
41
42 R453 10K R461 R462 R463 R465 R481 R495 4.7K 47K 4.7K 4.7K 4.7K 4.7K
5V
R483 4.7K
R487 100K
220
220
H F E G C D B A
C790 0.1
220
PLAY
R492 R493 R497
3.2V 0V
T J F
20ms.
K
A
B
C
D
E
G
I
H
H
F
G
Q707~Q709 KRC102MTA
MUTING CONT.
R776 22K R777 22K
R787 15K R788 15K R789 10K 4 R792 15K R796 56K 5 R795 56K
R797 15K
R793 4.7K C777 47P
R205 2.7K (2.5V) 0V
D702 MA111TX D703 MA111TX
R778 1K
Q722 KRA111MTA
MUTING CONT. 1.4V 1.3V (5V) (-2.8V)
Q714 2SB621ARTA
REGULATOR 5V 5.9V C766 1000P
C735 6.3V100 D722 MA111TX C767 16V10 R725 2.2K C764 0.01 R726 12K R701 1K R768 4.7K
Q708
2.3V (0V)
5.2V
Q7