SERVICE MANUAL
AG-D9260
AV Digital Home Theater Receiver
NOTES
●PC boards shown are viewed from parts side.
●The parts with no reference number or no parts number in the exploded views are not supplied.
●As regards the resistors and capacitors, refer to the circuit diagrams contained in this manual.
●£ Parts marked with this sign are safety critical components. They must be replaced with identical components - refer to the appropriate parts list and ensure exact replacement.
●Parts of [ ] mark can be used only with the version designated.
[US]:U.S.A. [C]:CANADA [E]:EUROPE [UK]:U.K.
Effective : January, 2002 |
S-0000A |
CONTENTS
SPECIFICATIONS................................................................................................................................. |
3 |
SAFETY INSTRUCTIONS ................................................................................................................... |
4 |
MEASUREMENTS AND ADJUSTMENTS ........................................................................................ |
5 |
FIP DISPLAY ........................................................................................................................................ |
8 |
DISPLAY PIN CONNECTION .............................................................................................................. |
9 |
IC BLOCK DIAGRAMS AND PIN FUNCTIONS ................................................................................ |
10 |
EXPLODED VIEWS AND PARTS LIST ............................................................................................. |
22 |
PC BOARDS AND PARTS LIST ........................................................................................................ |
24 |
INCLUDED ACCESSORIES ............................................................................................................... |
29 |
2
SPECIFICATIONS
Amplifier Section
Surround Output Power (0.9 % THD, 1 kHz, 8 ohms):
100 + 100 watts (Front)
100 watts (Center)
100 + 100 watts (Rear)
Delay Time:
DOLBY DIGITAL: REAR 0 – 15 ms
CENTER 0 – 5 ms
DOLBY PRO LOGIC: REAR 15 – 30 ms
Audio Input Sensitivity/Impedance:
*LINE: 220 mV/47 k ohms
Output Level/Impedance:
CD-R/TAPE REC: 200 mV/2.2 k ohms
Frequency Response:
*LINE: 20 Hz – 65 kHz, +1/ –3 dB
Signal-to-Noise Ratio:
*LINE: 95dB (IHF-A)
Tone Control:
BASS: ± 10 dB at 100 Hz
TREBLE: ± 10 dB at 10 kHz
Digital Audio Section
Sampling Frequency: 32 kHz, 44.1 kHz, 48 kHz, 96 kHz
DIGITAL Input Level/Impedance:
DIGITAL 1, 2 (OPTICAL): –15 dBm — –21 dBm DIGITAL 3 (COAXIAL): 0.5 Vp-p / 75 ohms
FM Tuner Section
(Without notes 100.1 MHz, 65 dBf)
Tuning Range:
87.5 MHz – 108.0 MHz (50 kHz steps, [us/c]:100kHz steps)
Usable Sensitivity (IHF):
Mono: 11.2 dBf
50 dB Quieting Sensitivity:
Mono: 15.3 dBf
Stereo: 38.5 dBf
Capture Ratio: 2.0 dB
Image Rejection Ratio: 80 dB ( [us/c]: 45dB ) AM Suppression Ratio: 55 dB
Total Harmonic Distortion (1 kHz):
Mono: 0.4%
Stereo: 0.5%
Frequency Response: 30 Hz – 15 kHz, +1/ –1.5 dB
Stereo Separation (1 kHz): 40 dB
Signal-to-Noise Ratio:
Mono: 75 dB
Stereo: 70 dB
AM Tuner Section
Tuning Range:
522 kHz – 1,620 kHz (10 kHz steps)
539 kHz – 1,720 kHz (10 kHz steps: [us/c] )
Usable Sensitivity: 55 dB/m
Total Harmonic Distortion: 0.8% at 85 dB/m Signal-to-Noise Ratio: 45 dB at 85 dB/m
Video Section
Input Sensitivity/Impedance: 1.0 Vp-p/75 ohms Output Level/Impedance: 1.0 Vp-p/75 ohms
General
Power Requirements:
[E/UK] : 230V AC, 50Hz
[US/C] : 120V AC, 60Hz
Power Consumption:
[E/UK] : 300W [US/C] : 2.8A
AC Outlets:
Switched x 2, Total 100 W max. (1 A max.) (U.S.A./Canada model)
Dimensions (W x H x D)
435 x 165 x 350 mm (17-1/8" x 6-1/2" x 13-3/4")
Weight (net):
[E/UK] : 9.5kg
[US/C] : 9.4kg(20-11/16lb)
Standard Accessories:
AM Loop Antenna x 1
FM T-type Antenna x 1[E/uk]
FM T-type Antenna x 1
Remote Control Unit (UR-417) x 1
*LINE means CD, CD-R/TAPE, VCR/VIDEO 1, DBS/VIDEO 2, DVD/VIDEO 3 and AUX/VIDEO 4.
<Improvements may result in specifications and features changing without notice.
<Illustrations may differ slightly from production models.
3
SAFETY INSTRUCTIONS
PRECAUTIONS DURING SERVICING
1. Parts identifide by the 
(
)symbol parts are critical for safety. Replace only with parts number specified.
2.In addition to safety, other parts and assemblies are specified for conformance with such regulations as those applying to spurious radiation.
These must also be replaced only with specifide replacements.
Examples :RF converters, tuner units, antenna selectswitches, RF cables, noise blocking capacitors, noise blocking filters, etc.
3.Use specified internal wiring. Note especially :
1)Wires covered with PVC tubing
2)Double insulated wires
3)High voltage leads
4.Use specified insulating materials for hazardous live parts. Note especially:
1)Insulation Tape
2)PVC tubing
3)Spacers(insulating barriers)
4)Insulation sheets for transistors
5)Plastic screws for fixing micro switches
5.When replacing AC primary side components (transformers, power cords, noise blocking capacitors, etc.), wrap ends of wires securely about the terminals before soldering.
6.Make sure that wires to do not contact heat producing parts (heat sinks, oxide metal film resistors, fusible resistors, etc.).
7.Check that replaced wires do not contact sharp edged or pointed parts.
8.Also check areas surrounding repaired locations.
9.Make sure that foreign objects (screws, solder droplets, etc.) do not remain inside the set.
MAKE YOUR CONTRIBUTION TO PROTECT THE ENVIRONMENT
Used batteries with the ISO symbol for recycling as well as small accumulators (rechargeable batteries), mini-batteries (cells) and starter batteries should not be thrown into the garbage can.
Please leave them at an appropriate depot. All other household batteries can be thrown out with the household waste.
SAFETY CHECK AFTER SERVICING
After servicing, make measurements of leakage-current or resistance in order to determine that exposed parts are acceptably insulated from the supply circuit.
The leakage-current measurement should be done between accessible metal parts (such as chassis, ground terminal, microphone jacks, signal input/output connectors, etc.) and the earth ground through a
resister of 1500 ohms paralleled with a 0.15 
capacitor, under the unit's normal working conditions.
The leakage-current should be less than 0.5mA rms AC. The resistance measurement should be done between accessible exposed metal parts and power cord plug prongs with the power switch (if included) "ON". The resistance should be more than 2.2M Ohms.
PRECAUTIONS IN REPAIRING
When repairing or adjusting the unit, please note the following points.
1.Do not put excessive pressure on the mechanical part (operation part), including the pick-up block, as extremely high mechanical precision is required in these parts.
2.When the base is removed for repair adjustment, make sure that there are no metal obiects in the narrow gap between the P. C. board or the mecha parts and the base
3.The Micro-Computer and the CD signal processing ICs can be damaged by static electricity or leakage from a soldering iron during repairing. While soldering, please take the precautions against leakage
GND
4.Do not loosen any screws in the pick-up block. When handing the pick-up block, please refer to the points to NOTE when replacing the pick-up block.
5.Keep safety for hazardous invisible Laser Radiation, DO NOT watch the Laser Beam (Objective lens) directly.
6.Models for some countries, laser warning labels are affixed on the unit and inside of the unit, as shown below. Read it carefully for your safety, when repairing or adjusting the unit.
4
MEASUREMENTS AND ADJUSTMENTS
ALIGNMENT INSTRUCTIONS
EQUIPMENT NEEDED:
AM Signal Generator
FM Signal Generator
Oscilloscope
VTVM(AC, DC)
Test loop antenna (AM Adjustment)
Dummy antenna (FM Adjustment)
Distortion analyser
IMPORTANT
1.Check power-source voltage.
2.Set the function switch to band aligned.
3.Keep the signal input as low as possible to adjust accurately.
4.Modulation and modulation frequency.
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Modulation frequency |
Band |
Modulation |
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AM |
30% |
400Hz |
FM |
100% (40 kHz Dev.) [E/UK] |
400Hz |
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100% (75 kHz Dev.) [US]
ADJUSTMENT POINT
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AM LOOP ANT FM ANT |
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<PACK DETAIL> |
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(FOR EUR version) |
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ANT TERMINAL |
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L2 |
L1 |
L1 |
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FM ANT COIL |
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PACK1 |
L3 |
L2 |
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L104 |
CT10 |
L105 |
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L5 |
L4 |
L3 |
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FM RF COIL |
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J205 |
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L6 |
IFT |
L4 |
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L5 |
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L7 |
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L6 |
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L7 |
FM OSC COIL |
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J207 |
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(FOR UL version) |
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L3 |
L3 |
FM ANT COIL |
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IC12 |
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L4 |
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T102 |
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L5 |
L6 |
L4 |
FM RF COIL |
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T1 |
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L5 |
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VR13 |
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L7 |
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L6 |
FM OSC COIL |
T101 |
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L7 |
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VR12 |
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VR11 |
J208 |
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T1 |
FM IFT |
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CT10 AM ANT TRIMMER (1503kHz/1510kHz) |
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L104 |
AM ANT COIL |
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L105 |
AM OSC COIL |
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T101 |
FM IFT COIL |
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T102 AM IFT COIL (612kHz/610kHz) |
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IC11 |
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VR13 |
FM SD ADJUSTMENT |
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VR12 |
AM SD ADJUSTMENT |
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VR11 |
FM SEPARATION ADJ |
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J208 |
FM/AM VT |
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J205 |
FM OFFSET ADJ TP |
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J207 |
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5
1.TUNING FREQUENCY RANGE ADJUSTMENTS
(FM) DC VOLTMETER ................ CONNECT TO TEST POINT J208 and GND |
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NO. |
Band |
Frequency |
Adjust for |
Adjustment |
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1 |
FM |
87.50MHz |
1.6V |
L7 |
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J208 |
2 |
AM |
530 kHz |
1V |
L105 |
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[US/C] |
[530 kHz] |
[1V] |
[L105] |
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2.AM TRACKING ADJUSTMENT
Signal Generator ........................ Connects to the AM ANT. Coil through the loop antenna. Adjust for the indication of VTVM of the wave form of scope to be maximum.
BAND |
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Frequency |
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Adjust for |
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Adjustment |
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1 |
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610 kHz |
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Maximum sensitivity |
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T102, L104 |
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[US/C] |
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[610 kHz] |
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Maximum sensitivity |
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T102, L104 |
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AM |
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1510 kHz |
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Maximum sensitivity |
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CT10 |
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[1510 kHz] |
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Maximum sensitivity |
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CT10 |
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Repeat steps 1 and 2 several times. |
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3.FM-RF ADJUSTMENT
Signal Generator ........................ |
Connect to FM ANT JACK (FM IN) through the dummy. |
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NO. |
Frequency |
Adjust for |
Adjustment |
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1 |
90.10MHz |
Maximum Sensitivity |
L3, L5, L6 |
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2 |
Repeat step 1 several times. |
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6
4.FM MONO DISTORTION ADJUSTMENT
DC VOLT METER |
........................Connect to J205 (-), J207 (+) through the chock coil (100uH). |
Signal Generator |
........................Connect to FM ANT Jack (FM IN) through the dummy. |
Distortion Meter ......................... |
Connect to the output. |
J205 |
J207 |
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NO. |
Frequency |
Adjust for |
Adjustment |
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1 |
100.10MHz |
DC Voltmeter 0V |
T101 |
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2 |
100.10MHz |
DC Voltmeter 0V |
T101 |
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Minimum T.H.D |
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3 |
Repeat steps 1 and 2 several times. |
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5.FM/AM AUTO STOP LEVEL ADJUSTMENT
FM Signal Generator.................. |
Connect to FM ANT Jack (FM IN) through the dummy. |
AM Signal Generator ................. |
Connect to AM ANT. Coil through the Loop antenna. |
BAND |
Step |
Signal Generator |
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Adjust for |
Adjustment |
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1 |
990KHz 82dB |
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Display ON |
VR12 |
AM |
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TUNED |
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[US/C] |
[990KHz] |
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2 |
990KHz 81dB |
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Display OFF |
VR12 |
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TUNED |
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[US/C] |
[990KHz] |
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1 |
100.1MHz 32dB |
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Display ON |
VR13 |
FM |
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TUNED |
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2 |
100.1MHz 31dB |
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Display OFF |
VR13 |
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TUNED |
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7
FIP DISPLAY
ANODE CONNECTION
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10G |
9G |
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8G |
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7G |
6G |
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5G |
4G |
3G |
2G |
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1G |
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P1 |
SOURCE |
d2 |
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d2 |
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d2 |
d2 |
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d2 |
d2 |
d2 |
d2 |
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kHz |
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P2 |
AUX |
d1 |
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d1 |
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d1 |
d1 |
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d1 |
d1 |
d1 |
d1 |
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1d |
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P3 |
LD |
e |
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e |
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e |
e |
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e |
e |
e |
e |
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1e |
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P4 |
DVD |
r |
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r |
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r |
r |
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r |
r |
r |
r |
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1c |
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P5 |
VCR 1 |
p |
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p |
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p |
p |
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p |
p |
p |
p |
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1g |
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P6 |
REC |
n |
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n |
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n |
n |
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n |
n |
n |
n |
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1f |
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P7 |
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c |
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c |
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c |
c |
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c |
c |
c |
c |
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1b |
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P8 |
SP. |
f |
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f |
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f |
f |
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f |
f |
f |
f |
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1a |
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P9 |
A |
g |
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g |
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g |
g |
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g |
g |
g |
g |
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M |
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P10 |
B |
m |
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m |
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m |
m |
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m |
m |
m |
m |
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2d |
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P11 |
CHURCH |
h |
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h |
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h |
h |
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h |
h |
h |
h |
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2e |
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P12 |
DISCO |
j |
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j |
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j |
j |
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j |
j |
j |
j |
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2c |
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P13 |
STADIUM |
k |
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k |
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k |
k |
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k |
k |
k |
k |
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2g |
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P14 |
HALL |
b |
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b |
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b |
b |
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b |
b |
b |
b |
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2f |
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P15 |
THEATER |
a2 |
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a2 |
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a2 |
a2 |
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a2 |
a2 |
a2 |
a2 |
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2b |
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P16 |
PCM |
a1 |
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a1 |
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a1 |
a1 |
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a1 |
a1 |
a1 |
a1 |
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2a |
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P17 |
AC-3 |
S1 |
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S1 |
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S1 |
S1 |
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S1 |
S1 |
S1 |
S1 |
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DELAY.T |
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P18 |
STEREO |
S2 |
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S2 |
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S2 |
S2 |
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S2 |
S2 |
S2 |
S2 |
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PRESET CH. |
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P19 |
3 |
S3 |
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S3 |
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S3 |
S3 |
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S3 |
S3 |
S3 |
S3 |
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MEMO |
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P20 |
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S4 |
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S4 |
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S4 |
S4 |
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S4 |
S4 |
S4 |
S4 |
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TAPE |
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P21 |
DIGITAL |
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Dp |
TA |
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MHz |
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RDS |
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P22 |
PRO LOGIC |
DTS |
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PTY |
RT |
TP |
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mS |
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TUNED |
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STEREO |
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8
PIN CONNECTION
47 |
1 |
Pin No. |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
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Connection |
F2 |
F2 |
NP |
NX |
NX |
NX |
NX |
P22 |
P21 |
P20 |
P19 |
P18 |
P17 |
P16 |
P15 |
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Pin No. |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
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Connection |
P14 |
P13 |
P12 |
P11 |
P10 |
P9 |
P8 |
P7 |
P6 |
P5 |
P4 |
P3 |
P2 |
P1 |
NX |
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Pin No. |
31 |
32 |
33 |
34 |
35 |
36 |
37 |
38 |
39 |
40 |
41 |
42 |
43 |
44 |
45 |
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Connection |
NX |
NX |
NX |
NX |
1G |
2G |
3G |
4G |
5G |
6G |
7G |
8G |
9G |
10G |
NP |
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Pin No. |
46 |
47 |
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Connection |
F1 |
F1 |
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9
IC PIN FUNCTION (u-COM : ANAM1308AT,O.T.P :TMP87PM78F) : IC71
PIN No. |
SYMBOL |
I/O |
DESCRIPTION |
|
1,25 |
VDD |
- |
Power Supply Port(+5V) |
|
2,3 |
Function SW1,SW2 |
I |
Function Encoder Control Port |
|
|
|
|
|
|
4 |
Speaker ON/OFF |
O |
Front Speaker Relay Drive Port(“H”) |
|
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|
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|
5 |
NC |
- |
Not Use(No connection) |
|
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|
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|
6 |
DSP Reset |
O |
Reset (Initial Clear) Port for YSS912 |
|
|
|
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|
7 |
Surr. CLK |
O |
Surr. CLK Output Port |
|
|
|
|
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|
8 |
DATA OUT |
O |
Data Output Port for YSS912 |
|
|
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|
|
9 |
Surr. DATA |
O |
Surr. DATA Output Port |
|
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10 |
CS |
O |
Chip Selector Port for YSS912 |
|
|
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|
|
11 |
CS |
O |
Chip Selector Port for AK4112 |
|
|
|
|
|
|
12 |
CSBN |
O |
Sub DSP Chip Selector for YSS912 |
|
|
|
|
|
|
13,14 |
RDS CLK/DATA |
I |
RDS IC(SA6579TV1) CLK/DATA Port |
|
|
|
|
|
|
15 |
Stereo IN |
I |
Stereo Display Control Port("L") |
|
|
|
|
|
|
16 |
Tuned IN |
I |
Tuned Display Control Port("L") |
|
|
|
|
|
|
17 ~ 21 |
KEY Matrix |
I |
Resistor Divide Key Control Input (17,18 Pin: NOT USE) |
|
|
|
|
|
|
22,30 |
Vss |
- |
Device GND Port |
|
|
|
|
|
|
23 |
Vass |
- |
Device Analog GND Port |
|
|
|
|
|
|
24 |
Varef |
- |
A/D Converter Reference Voltage |
|
|
|
|
|
|
26 |
BACKUP |
I |
Back Up Mode Control Input |
|
27 |
TEST |
- |
NC(GND) |
|
28,29 |
VOLUME UP/DOWN |
I |
Master Volume Up/Down Control Port |
|
|
|
|
|
|
31 |
X IN |
I |
8MHz Crystal Connection Port |
|
|
|
|
||
32 |
X OUT |
O |
||
|
||||
|
|
|
|
|
33 |
RESET (L) |
I |
Reset Input |
|
|
|
|
|
|
34 |
REMOTE IN |
I |
Remote Control Sensor Data Input |
|
|
|
|
|
|
35 |
BUS IN(NC) |
I |
System Remote Control Input(No Connection)) |
|
|
|
|
|
|
36 |
HEADPHONE IN |
O |
Headphone JACK INPUT(“H”) - Connet to GND |
|
|
|
|
|
|
37 |
E.VOL.DATA |
O |
|
|
|
|
|
|
|
38 |
E.VOL.CLK |
I |
Electronic Vol. IC(M62446FP) DATA/CLK/STB Port |
|
|
|
|
|
|
39 |
E.VOL.CE |
O |
|
|
|
|
|
|
|
40 |
PLL.DATA IN |
I |
PLL IC (LC72131) DATA Input Port |
|
41 |
PLL.CE |
O |
PLL IC (LC72131) Chip Enable Control Port |
|
|
|
|
|
|
42 |
DATA 3 |
O |
Function IC Data Input Port |
|
|
|
|
|
|
43 |
CLK 3 |
O |
Func./PLL IC CLK Control Port |
|
|
|
|
|
|
44 |
FUNC. STB |
O |
Function Strobe Control Output |
|
|
|
|
|
|
45 |
FUNC. MUTE |
O |
Function Mute Control Output(“H”) |
|
|
|
|
|
|
46 |
SURR. MUTE |
O |
Surrounc Mute Control Output(“H”) |
|
47 |
Power ON/OFF |
O |
Power ON/OFF Control Port("H") |
|
48 |
SURR. H |
O |
Surr. ON/OFF Contol Port("H") |
|
|
|
|
|
|
49 |
PROTECT IN |
I |
Protect Input Port("L") |
|
50 |
FIP Vkk |
- |
FIP (FLT) -28V Negative Power Supply For FIP Blinking |
|
|
|
|
|
|
51 ~ 60 |
FIP Grid |
O |
FIP (FLT) Grid Control Outputs |
|
|
|
|
|
|
61 ~ 82 |
FIP Segment |
O |
FIP (FLT) Segment Control Outputs |
|
83 ~ 86 |
Option |
l |
Area/Function Option Ports |
|
|
|
|
|
|
87 ~ 94 |
N.C |
- |
Not Use(No connection) |
|
95 |
SUB. LED |
O |
Subwoofer LED Drive Port |
|
|
|
|
|
|
96 |
MUTE LED |
O |
MUTE LED Drive Port |
|
|
|
|
|
|
97 ~ 99 |
VIDED A/B/C |
O |
Video IC(NJM2296M/LA7952) Control Ports |
|
|
|
|
|
|
100 |
N.C |
- |
Not Use(No connection) |
10
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