Aiwa XR-HG7MD User manual

SERVICE MANUAL
DATA
XR-HG7MD RC-ZAS18
SYSTEM MD/CD
CASSEIVER REMOTE CONTROLLER
CX-NHG7MD
MD/CD
STEREO SYSTEM
BASIC TAPE MECHANISM : AZM-1 A1
BASIC CD MECHANISM : AZG-1 SB3RNMD
BASIC MD MECHANISM : AZG-TD
XR-HG7MD
EZ,K
S/M Code No. 09-008-349-4R1
If requiring information about the CD mechanism, see Service Manual of AZG-1
(S/M Code No. 09-001-335-3NE).
If requiring information about the MD mechanism, see Service Manual of AZG-T
(S/M Code No. 09-007-348-1N2).
SPEAKER
SX-WNH81
REVISION
This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
(S/M Code No. 09-008-349-4T1).
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2
Main unit CX-NHG7MD
FM tuner section
Tuning range 87.5 MHz to 108 MHz
Usable sensitivity (IHF) 16.8 dBf
Antenna terminal 75 ohms (unbalanced)
AM (MW) tuner section
Tuning range 531 kHz to 1602 kHz (9 kHz step)
530 kHz to 1710 kHz (10 kHz step)
Usable sensitivity 350 µV/m
Antenna Loop antenna
LW tuner section
Tuning range 144 kHz to 290 kHz
Usable sensitivity 1400 µV/m
Antenna Loop antenna
Amplifier section
Mid-high frequency amplifier
Power output Rated: 20 W + 20 W (8 ohms,
T.H.D. 1 %, 1 kHz/DIN 45500)
Reference : 25 W + 25 W (8 ohms,
T.H.D. 10 %, 1 kHz/DIN 45324)
DIN MUSIC POWER:
40 W + 40 W
Total harmonic distortion 0.1 % (10 W, 1 kHz, 8 ohms, DIN
AUDIO)
Low frequency amplifier
Power output Rated: 60 W + 60 W (6 ohms,
T.H.D. 1 %, 130 Hz/DIN 45500)
Reference : 75 W + 75 W (6 ohms,
T.H.D. 10 %, 130 Hz/DIN 45324)
DIN MUSIC POWER:
130 W + 130 W
Total harmonic distortion 0.1 % (30W, 130 Hz, 6 ohms, DIN
AUDIO)
Inputs VIDEO/AUX: 316 mV
DIGITAL IN (OPTICAL)
Outputs SPEAKERS LOW FREQ:
accept speakers of 6 ohms or more
SPEAKERS HIGH FREQ:
accept speakers of 8 ohms or more
SURROUND SPEAKERS:
accept speakers of 8 ohms to 16
ohms
PHONES (stereo jack): accepts
headphones of 32 ohms or more
CD DIGITAL OUT (OPTICAL) jack
SPECIFICATIONS
Compact disc player section
Laser Semiconductor laser (λ = 780 nm)
D-A converter 1 bit dual
Signal-to-noise ratio 85 dB (1 kHz, 0 dB)
Harmonic distortion 0.05 % (1 kHz, 0 dB)
Wow and flutter Unmeasurable
MD recorder section
Scanningmethod Non-contact optical scanner
(Semiconductor laser application)
Recording system Magnetic polarity modulation
overwrite system
Rotation speed Approx. 400 - 900 rpm (CLV)
Sampling frequency 44.1 kHz
No. of channels Stereo: 2 channels
Monaural: 1 channel
A-D, D-A converter 1-bit
Frequency 20 to 20000 Hz + 0.5 - –1.5 dB
Wow & Flutter Unmeasurable
Cassette deck section
Track format 4 tracks, 2 channels stereo
Frequency response 50 Hz – 15000 Hz
Recording system AC bias
Heads Recording/playback head x 1,
erase head x 1
General
Power requirements 230 V AC, 50 Hz
Power consumption 160 W
Power consumption in standby mode
If the power-economizing mode is
ECO OFF: 22 W
If the power-economizing mode is
ECO ON or ECO AUTO: 0.9 W
Dimensions of main unit 260 x 324 x 394 mm
(W xH xD)
Weight of main unit 11 kg
Speaker system SX-WNH81
Speaker system 3 way, Built-in subwoofer (magnetic
shielded type)
Speaker units Subwoofer: 200 mm cone type
Full range: 120 mm cone type
Super tweeter: 20 mm ceramic type
Impedance 6 ohms/8 ohms
Sensitvity 87 dB/W/m
Dimensions (W xH xD) 240 x 324 x 285 mm
Weight 5.7 kg
REF. NO PART NO. KANRI DESCRIPTION
NO.
ACCESSORIES LIST
1 8A-DB6-915-010 IB,K(E)I<K>
1 8A-DB6-916-010 IB,EZ(9L)I<EZ>
2 8Z-NB5-703-010 RC UNIT,RC-ZAS18
3 87-006-225-010 ANT,LOOP ANT NC2
4 87-A90-118-010 ANT,WIRE FM(Z)
!5 87-099-811-010 PLUG,ADPTR CONV(K)<K>
• Design and specifications are subject to change without notice.
• The word “BBE” and the “BBE symbol” are trademarks of BBE
Sound, Inc.
• Under license from BBE Sound, Inc.
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3
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING
VAROITUS!
Laiteen Käyttäminen muulla kuin tässä käyttöohjeessa mainit-
ulla tavalla saattaa altistaa käyt-täjän turvallisuusluokan 1 ylit-
tävälle näkymättömälle lasersäteilylle.
VARNING!
Om apparaten används på annat sätt än vad som specificeras i
denna bruksanvising, kan användaren utsättas för osynling
laserstrålning, som överskrider gränsen för laserklass 1.
Caution: Invisible laser radiation when
open and interlocks defeated avoid expo-
sure to beam.
Advarsel:Usynling laserståling ved åbning,
når sikkerhedsafbrydere er ude af funktion.
Undgå udsættelse for stråling.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
ATTENTION
L'utilisation de commandes, réglages ou procédures autres que
ceux spécifiés peut entraîner une dangereuse exposition aux
radiations.
ADVARSEL!
Usynlig laserståling ved åbning, når sikkerhedsafbrydereer ude
af funktion. Undgå udsættelse for stråling.
This Compact Disc player is classified as a CLASS 1 LASER
product.
The CLASS 1 LASER PRODUCT label is located on the rear
exterior.
This set employs laser. Therefore, be sure to follow carefully the
instructions below when servicing.
WARNING!
WHEN SERVICING, DO NOT APPROACH THE LASER EXIT
WITH THE EYE TOO CLOSELY. IN CASE IT IS NECESSARY TO
CONFIRM LASER BEAM EMISSION. BE SURE TO OBSERVE
FROM A DISTANCE OF MORE THAN 30cm FROM THE
SURFACE OF THE OBJECTIVE LENS ON THE OPTICAL
PICK-UP BLOCK.
CLASS 1
KLASSE 1
LUOKAN 1
KLASS 1
LASER PRODUCT
LASER PRODUKT
LASER LAITE
LASER APPARAT
Precaution to replace Optical block
(KSS-213F)
1) After the connection, remove solder shown in
the right figure.
Body or clothes electrostatic potential could ruin
laser diode in the optical block. Be sure ground
body and workbench, and use care the clothes
do not touch the diode.
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• CD service position
Remove the CABI, STEEL.
Remove the five screws (BVT2+3-10) A.
Turn over the unit and remove the CABI, BOTTOM.
Remove the two FFCs (13P and 6P) the CD block from the hook of the CABI, BOTTOM.
Loosen the two screws (QT2+3-12) Bof the AZG-1 CABI, FR. (The screws are used at the both sides.)
NOTE ON BEFORE STARTING REPAIR
A
A
B
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Remove the hooks in the direction of the arrow. (The hooks are used at the both sides.) Pull the CABI, BOTTOM up to the diagonally
top right and remove it.
Lay down the unit and remove the 3ZG-2 mechanism.
Extend the 3ZG-2 mechanism using the respective extension jigs.
Service position
HOOK
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TEST MODE <CD>
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1. Starting up the MD Test Mode
While pressing the MD function button, insert the AC plug into the outlet.
Notes: 1) Mechanical abnormalities are ignored while the test mode is starting up.
If any abnormality occurs, disconnect the plug immediately.
2) During test mode operation, playback and recording are not possible.
2. Checking the MD Test Mode
Indication
About five seconds after the test mode starts, characters are displayed as shown below on the display and the test mode becomes
usable.
3. Canceling the MD Test Mode
1) Keep pressing the MD EJECT button to eject the disk.
2) Disconnect the AC plug.
* If the MD test mode is canceled by procedures other than the above, the unit sometimes run incorrectly when the power is turned
on again. If this happens, disconnect the AC plug.
4. Switching to the Servo Standby Mode
After starting up the test mode, press the STOP button to switch to the servo standby mode. (Indication: ALL SVoFF)
Change from the this mode to other modes.
When the STOP button is pressed in each mode, the display returns to “ALL SVoFF”.
4-1. Audio System Output Check
The signal of 1 kHz, -17 dBV (140 mV) can be checked using the MD board AOUTL, AOUTR in the test mode.
5. Checking the Sled Feed Operation
1) Press the CD ™1MD REC button to load the mechanism.
2) Press the F.SKIP button in the “ALL SVoFF” state to move the pickup to the outer circumference.
Then “T.SLED fwd” is displayed.
3) Press the B.SKIP button in the “ALL SVoFF” state to move the pickup to the inner circumference.
Then “T.SLED rvs” is displayed. Turn on the INSIDE LIMIT switch to turn on the graphic equalizer “CLASSIC”.
4) After checking, press the B.SKIP button to move the pickup to the innermost circumference (CLASSIC lights) and press the MD
EJECT button to unload the mechanism.
6. Checking the Laser Power
1) Every time the EDIT button is pressed in the “ALL SVoFF” state, the laser power is switched. The display is switched as shown
below.
2) After checking, press the STOP button to return the display to “ALL SVoFF”.
MD TEST MODE
LA 1/2
LA READ LA WRITE
ALL SVoFF
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7. Checking the Loading Mechanism and OWH
To check the operations of the loading mechanism and OWH, follow the procedure given below.
Method 1: Insert the MO disk into the desired slot of magazines 1 to 3 and press the MD DISC DIRECT PLAY button of the slot.
After loading, confirm that the OWH moves up.
Method 2: Press CD ™1MD button in the “ALL SVoFF” state. The mechanism is loaded regardless of whether a disk is inserted.
To load the disk, insert the disk into the slot at the position where the elevator stops.
Every time the CD ™1MD REC button or MD EJECT button is pressed during loading, the OWH moves up or down.
CD ™1MD .................. The OWH moves down.
MD EJECT button....... The OWH moves up and is unloaded.
Note: Even if the MD DISC DIRECT PLAY button is pressed when a disk is not inserted into the slot, loading is not performed.
8. Display Indication
The state of the circuits, selected disk and switches can be checked on the display.
9. Checking the Servo Operation
9-1. Checking the Focus Search and Spindle Kick 1 (checking the S-curve)
1) When the RANDOM/REPEAT button of the remote control is pressed in the “ALL SVoFF” state, the focus search is
performed. Then “FOCUS CHK” is displayed. These operations are repeated regardless of whether a disk is installed.
Therefore, the S-curve can be checked with the disk inserted.
2) After checking, press the STOP button to return the display to “ALL SVoFF”.
9-2. Checking the Focus Search and Spindle Kick 2
1) When the PLAY button is pressed in the “ALL SVoFF” state without inserting a disk, the search and spindle kick are
performed at the same time. Then “FOCUS SCH” is displayed.
2) After checking, press the STOP button to return the display to “ALL SVoFF”.
9-3. Checking the Focus Servo
1) Insert a disk.
2) Press the MODE button and set the servo mode according to the inserted disk as shown below.
• MO disk ................ Indication “SEL GRV” appears and “TIME MARK” lights.
• PIT disk ................Indication “SEL PIT” appears and “AUTO MARK” lights.
3) Press the PLAY button.
If the focus servo is normal, “FOCUS SRCH” appears and “FOCUS ON!” appears.
4) After checking, press the STOP button to return the display to “ALL SVoFF”.
9-4. Checking the All Servo ON
1) When the ENTER button is pressed in the “FOCUS ON!” state, the tracking sled servo is turned on and all servos run. If the
servos are all normal, “ALL SV ON” is displayed.
2) After checking, press the STOP button to return the display to “ALL SVoFF”.
Function Display Pict indication During pict on During pict off
1Laser power LA READ-1/2-WRITE T-BASS Displayed using the three-step level meter
2Disk type SEL GRV AUTO MARK MO DISC (for recording and playback)
SEL PIT TIME MARK PIT DISC (for playback)
3REC PROTECT SW ROCK REC is possible REC protect
4REFLECT SW POP PIT DISC MO DISC
5INSIDE LIMIT SW CLASSIC SW ON SW OFF
(innermost circumference)
2DISC TYPE
1LASER POWER
3REC PROTECT SW
4REFLECT SW
5INSIDE LIMIT SW
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All the adjustments and checks of the MD block are performed in the test mode.
When “No Adjust” appears on the display, follow sections 1 through 3 to adjust.
1. Temperature Compensation Adjustment
* Normally, do not perform the temperature compensation adjustment.
If the adjustment value is extensively different, perform the adjustment as given below in a suitable environment for measuring
the correct temperature near the unit.
• Test point: Check the test point on the display.
• Tool: Thermometer
1) After the MD test mode starts up, press the STOP button to display “ALL SVoFF”.
2) Press the DISPLAY button to display “TEMP = $**”.
3) Press the PAUSE button to display “T + **C :+ 00”.
4) Put the thermometer near the MD mechanism to measure the room temperature.
5) Check the values of the thermometer and press the B.SKIP button and the F.SKIP button until the value is the same as ** of the
display. Press the ENTER button to store the value.
6) After adjustment, press the STOP button to return the display to “ALL SVoFF”.
* When “No Adjust” is displayed, perform 1) to 3) and press the ENTER button without changing the adjustment value using the
B/F.SKIP button.
2. Laser Power Adjustment
• Test point: Check the display/Pickup laser output
• Tool: Laser power meter (meters that can measure up to 10 mW)
2-1. Playback Laser Power Adjustment
1) Press the EDIT button in the “ALL SVoFF” state to change the display to “LA READ”.
2) Press the PAUSE button once to display “LASER = $**”.
3) Adjust “LASER=$11” using the B.SKIP and F.SKIP buttons and press the ENTER button.
4) Measure the pickup laser output using the laser power meter and check that it is about 0.68mW.
5) After adjustment, press the STOP button to change the display to “ALL SVoFF”.
2-2. Record Laser Power Adjustment
1) Press the EDIT button three times in the “ALL SVoFF” state to change the display to “LA WRITE”.
2) Press the PAUSE button once to display “LASER = $**”.
3) Adjust “LASER=$9F” using the B.SKIP and F.SKIP buttons and press the ENTER button.
4) Measure the pickup laser output using the laser power meter and check that it is about 6.8mW.
5) After adjustment, press the STOP button to return the display to “ALL SVoFF”.
Note: If the laser power exceeds 7.0 mW, the pickup may be damaged.
3. Automatic Sequence Adjustment (EFB/IVR/FOCUS AGC/TRACKING AGC adjustment)
• Test point: Check the test point on the display.
• Test disk: MDW-74, TGYS-1 or equivalent
3-1. Adjusting the MO Disk
1) Load the MDW-74.
2) Press the MODE button to display “SEL GRV”.
3) Press the MD function button to display “AUTO ADJ”. After adjustment, “DONE” is displayed.
(If the adjustment failed, “FAILED” appears.)
4) Then, press the STOP button to return the display to “ALL SVoFF”.
3-2. IVR, EFB, Focus/Tracking/Sled Gain Check of MO Disk
1) Move the pickup to the center of the disk using the B.SKIP button and F.SKIP button.
2) Press the PLAY button to display “FOCUS ON!”.
3) Press the ENTER button to display “ALL SV ON”.
4) Press the STOP button and press the DISPLAY button twice. Confirm that the values of “I$**: E$⁄⁄” are within the range
shown below. (hexadecimal)
I$“**” ..................... 03 to 0A
E$ “⁄⁄” ................. 09 to 15
ELECTRICAL ADJUSTMENT
IVR EFB
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5) Press the DISPLAY once again.
Confirm that the values of “f**t##s33” are within the range shown below. (hexadecimal)
f “**” ...................... 1A to 40
t “##” ....................... 0C to 30
s “33” .................... 0C to 30
6) After adjustment, press the STOP button to return the display to “ALL SVoFF”.
3-3. Adjusting the PIT Disk
1) Insert the TGYS-1.
2) Press the MODE button to display “SEL PIT”.
3) Press the MD function button to display “AUTO ADJ”. After adjustment, “DONE” is displayed. (If the adjustment failed,
“FAILED” appears.)
4) Then, press the STOP button to return the display to “ALL SVoFF”.
3-4. IVR, EFB, Focus/Tracking/Sled Gain Check of PIT Disk
1) Move the pickup to the center of the disk using the B.SKIP button and F.SKIP button.
2) Press the PLAY button to display “FOCUS ON!.
3) Press the ENTER button to display “ALL SV ON”.
4) Press the STOP button and press the DISPLAY button twice. Confirm that the values of “I$**: E$⁄⁄” are within the range
shown below. (hexadecimal)
I$ “**” .................... 14 to 19
E$ “⁄⁄” ................. 09 to 15
5) Press the DISPLAY button once again. Confirm that the values of “f**t##s33” are within the range shown below.
(hexadecimal)
f “**” ...................... 1A to 45
t “##” ....................... 0C to 3F
s “33” .................... 0C to 3F
6) After adjustment, press the STOP button to return the display to “ALL SVoFF”.
4. Playback Error Rate Check (PIT DISC)
• Test point: Check the test point on the display.
• Test disk: TSYS-1 or equivalent
1) Load the TGYS-1.
2) Move the pickup to the center of the disk using the B.SKIP button and F.SKIP button.
3) Press the MODE (MD) button to display “SEL PIT”.
4) Press the PLAY button to display “FOCUS ON!”.
5) Press the ENTER button to display “ALL SV ON”.
6) Press the DISPLAY button once to confirm that counting of the address indication is stable.
7) Press the DISPLAY button once again to display the playback error rate.
Confirm that the numbers of “****:****” (underlined portion) is “0030” or lower.
8) After checking, press the STOP button to return the display to “ALL SVoFF”.
FOCUS GAIN TRACKING GAIN SLED GAIN
FOCUS GAIN TRACKING GAIN SLED GAIN
IVR EFB
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5. Record/Playback Error Rate Check (MO DISC)
• Test point: Check the test point on the display.
• Test disk: MDW-74
1) Load the MDW-74.
2) Move the pickup to the center of the disk using the B.SKIP button and F.SKIP button.
3) Press the CD function button. Recording starts automatically in cluster 600.
4) After recording for about 15 seconds, press the STOP button.
5) Press the AUX/D-IN function button move the pickup to around cluster 600 and enter the “ALL SV ON” state (the display is in
the state of the address indication). Press the DISPLAY button in or after cluster 600. Then confirm that the values of
“****:****” (underlined portion) is “0030” or lower.
6) After checking, press the STOP button to return the display to “ALL SVoFF”.
6. How to Initialize the EEP-ROM
Do the following procedure to set the adjustment value of the EEP-ROM to the default (standard value).
1) Press the BBE button.
2) Turn on the power again and confirm that “No Adjust” is displayed.
* Even when “No Adjust” is displayed, MDs can be operated.
Note: When initializing the EEP-ROM, be sure to do 1 to 3 of the MD electrical adjustment.
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DISASSEMBLY INSTRUCTIONS
PANEL, REAR
AZG-26
3
AZG-21
HLDR, MD
AZG-26
1
2
DISASSEMBLY INSTRUCTION
Removing the MD Block
1) Remove the PANEL, REAR in advance.
2) Remove the two screws.
3) Remove the two screws.
4) Release the hook 1and remove the AZG-26 in the
order of 2™3.
5) Remove the four screws and remove the AZG-21 from
the HLDR, MD.
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Disassembling the MD block
Remove the AZG-21.
1) Remove the two screws (UT2+2.6-6 GLD) Dfrom the PLATE, SHLD REAR. Remove the PLATE, SHLD REAR.
2) Remove the four screws (U+2+2.6-6) Efrom the PLATE, SHLD TOP. Remove the PLATE, SHLD TOP.
PLATE, SHLD REAR
PLATE, SHLD TOP
E
E
E
D
D
E
PLATE, SHLD BOTTOM
F
F
F
F
3) Remove the four screws (UT2+2.6-6 GLD) Fand remove the PLATE, SHLD BOTTOM.
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SERVICE POSITION
MD service position
Place the MD block in the service position as follows. Connect the MD block with the interface board using the extension FFC as
shown to place the MD block into the service position.
FFC, 8P-1.0 SV-J00-043-010
FFC, 14P-1.0 SV-J00-044-010
FFC, 14P-1.0
FFC, 8P-1.0
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Disassembling the elevator
1) Rotate the WORM-WHL, JT (the gear shown by the arrow below) counterclockwise to move the elevator to the top position.
Note: If the PANEL, SHLD BOTTOM is not removed, the elevator cannot be removed.
WORM-WHL, JT
FF-CABLE, 9P 1.0
2) Remove the FF-CABLE, 9P 1.0 from the LOAD C.B.
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3) While lifting up the elevator slightly, remove an end of the shaft of the elevator from the guide hole of the CHAS ASSY, SHLD.
Remove the other end of the shaft and tilt the elevator as shown below.
While tilting the elevator, short the shorting land.
SHAFT
CHAS ASSY, SHLD
4) Remove the PICK UP, FFC and the MECHA C.B, FFC, then remove the elevator block.
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Disassembling the elevator block
1) Remove the screw (UT2+2.6-6 GLD) Gand the screw (VTT+2-4) H. Then remove the HLDR, MECHA SUB.
G
HHLDR, MECHA SUB
I
I
I
I
ZZG-1
HLDR ASSY, MECHA
2) Remove the four screws (S-SCREW, MD T) Iand remove the ZZG-1 from the HLDR ASSY, MECHA.
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3) Remove the two screws (VTT+2-4) A.
Remove the PLATE ASSY, SLIDE L and the PLATE, SLIDE R in the direction of the arrow.
Remove the screw (VW+1.7-5 W/O MFZN2C) B.
Remove the HEAD, OWH RF325-74A.
Re-assembling: Align the axis of the PLATE ASSY, SLIDE L with the arrow mark of the CAM, LOAD.
HEAD, OWH RF325-74A
PLATE ASSY,
SLIDE L
PLATE, SLIDE R
CAM, LOAD
A
A
B
a
b
b
c
BOSS
7ZG-3 A1
4) Move the 7ZG-3 A1 in the direction of (a).
While pressing the BOSS in the direction of (b), remove the 7ZG-3 A1 in the direction of (c).
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LEVER ASSY, CAM
GEAR, IDLER2
Reference hole of CAM, LOAD
Axis of LEVER, SW H
CAM, LOAD
5) Remove the CAM, LOAD in the direction of the arrow.
Re-assembling: Move the LEVER ASSY, CAM in the direction of the arrow mark as much as it can be moved.
Move the reference hole of the CAM, LOAD closer to the axis of the LEVER, SW H as close as possible.
Align the CAM, LOAD with the gear of the GEAR, IDLER2.
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Removing the DECK Block
1) Remove the MD block and PANEL, DECK in advance.
2) Remove the four screws and remove the PT.
PT
CLOSE
OPEN
3) Remove the four screws and remove the AZM-1.
* To open or close the tray, rotate the PULLEY.
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