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SERVICE MANUAL
AG-7D
AV Digital Home Theater Receiver
CONTENTS
1 SPECIFICATIONS 2
2 ADJUSTMENTS 3
3 EXPLODED VIEWS AND PARTS LIST 4
4 PC BOARDS AND PARTS LIST 7
5 INCLUDED ACCESSORIES 22
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.
Effective : November, 2004 S-0135A
1 SPECIFICATIONS
Amplifier Section General
Output Power ........................................................100 W + 100 W Power Requirements ..........AC 220 V, 50 Hz (China/Korea model)
(Stereo, 0.2 % THD, 20 Hz to 20 kHz, 6 ) AC 230 V, 50 Hz (Europe/Australia model)
120W + 120W (6 , JEITA)
Power Consumption ................................250 W (STANDBY : 3 W)
Surround Output Power ..................................125 W per channel AC Outlet ....................................................................switched x 1
(0.7 % THD, 1 kHz, 6 , only one channel driven) (except Australia model, total 100 W max.)
160 W per channel (6 , JEITA)
Dimensions (W x H x D) ................................435 x 143 x 372 mm
Total Harmonic Distortion ................0.09 % (at 95 W, 1 kHz, 6 ) Weight (net) ........................................................................10.4 kg
Audio Input Sensitivity/Impedance ..............*LINE: 200 mV/47 k
Output Level/Impedance (TAPE REC) ..................200 mV / 2.2 k
Frequency Response ................*LINE: 20 Hz to 50 kHz, +0 / 3 dB Standard Accessories
Signal-to-Noise Ratio ....................................*LINE: 90 dB (IHF-A) Power Cord x 1
Tone Control ............................................BASS: ± 10 dB at 100 Hz AM Loop Antenna x 1
TREBLE: ± 10 dB at 10 kHz FM T-type Antenna x 1
FM Matching Transformer x 1
Remote Control Unit (UR-426) x 1
Digital Audio Section Battery (AAA, R03, UM-4) x 2
Sampling Frequency ..................32 kHz, 44.1 kHz, 48 kHz, 96 kHz Owner's Manual x 1
Digital Input Level ................................COAXIAL (75 ): 0.5 Vp-p
OPTICAL (660nm): 15 dBm to 21 dBm
* LINE means CD, TAPE, VIDEO.
Video Section · Design and specifications are subject to change without notice.
S-Video output · Weight and dimensions are approximate.
Y (luminance) - Output level ..............................1 Vp-p (75 )
C (color) - Output level................................286 mVp-p (75 )
Jacks ..................................................................S-VIDEO jack
Video output
Output level ........................................................1 Vp-p (75 )
Jacks ..........................................................................RCA jack
Component video output (Y, PB, PR)
Y-Output level..................................................1.0 Vp-p (75 )
PB, PR-Output level ..........................................0.7 Vp-p (75 )
Jacks ........................................................................RCA jacks
FM Tuner Section (Without notes 100.1 MHz, 65 dBf)
Tuning Range ....................87.5 MHz to 108.0 MHz (50 kHz steps)
Total Harmonic Distortion (1 kHz) ..............................Mono: 0.5%
Stereo: 0.8%
Frequency Response ..................................30 Hz to 15 kHz, ±3 dB
Stereo Separation (1 kHz)......................................................40 dB
Signal-to-Noise Ratio ................................................Mono: 70 dB
Stereo: 65 dB
AM Tuner Section
Tuning Range ..........................522 kHz to 1,611 kHz (9 kHz steps)
Usable Sensitivity ............................................................500 µV/m
Total Harmonic Distortion ..................................1.5% at 100 dB/m
Signal-to-Noise Ratio ........................................40 dB at 100 dB/m
2
2 ADJUSTMENTS
2-1 Adjustment Locations
T1
SVR1 AM IF
SVR2
SVR3
MA
2-2 AM Adjustment
SIGNAL GENERATOR SETTING FREQUENCY ADJUSTMENT
ITEM ADJUST FOR
SIGNAL OUTPUT SETTING POINTS
Output level is maximum.
400Hz 603kHz
1. RF Tracking 58dBu MA coil 603kHz, 1404kHz should
30% modulation 1404kHz
be confirmed repeatedly.
400Hz
2. IF Tracking 58dBu 603kHz AM IF coil Output level is maximum.
30% modulation
400Hz
3. Auto Stop Level 60dBu 603kHz SVR3 TUNED indicator lights.
30% modulation
2-3 FM Adjustment
SIGNAL GENERATOR SETTING FREQUENCY ADJUSTMENT
ITEM ADJUST FOR
SIGNAL OUTPUT SETTING POINTS
1kHz
1. Stereo Distortion Main: 90% 60dBu 98.1MHz T1 coil Distortion is minimum.
Pilot: 10%
1kHz
2. Stereo Separation Main: 90% 60dBu 98.1MHz SVR2 Separation is maximum.
Pilot: 10%
1kHz
3. Auto Stop Level 19dBu 98.1MHz SVR1 TUNED indicator lights.
75 kHz deviation
3
3 EXPLODED VIEWS AND PARTS LIST
47
46
45
49
50
48
44
24
42
41
23
25
22
43
26
40
19 26
18 39
15
14 38 37
26 36
12
11 35
10 33
9 32
28 31
29
30
29 34
13 29
5 17
2
6 16
27
1 8
7
1
4
3
4
EXPLODED VIEW LIST
5
EXPLODED VIEW LIST
£
£
£
£
£
£
£
£
£
£
£
£
£
£
£
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£
£
£
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£
6
4 PC BOARDS AND PARTS LIST
MAIN PCB (SIDE A)
7
MAIN PCB (SIDE B)
8
AMP PCB
FRONT PCB MULTI PCB
9
DSP PCB (SIDE A) DSP PCB (SIDE B)
VIDEO PCB (SIDE A) VIDEO PCB (SIDE B)
10
COMPONENT PCB (SIDE A)
COMPONENT PCB (SIDE B)
11
ST-BY PCB
HP PCB POWER SW PCB ST-BY SW PCB
12
MAIN PCB ASSY [E] MAIN PCB ASSY [E]
£
£
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£
£
£
£
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13
MAIN PCB ASSY [E] MAIN PCB ASSY [A,CN]
£
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MAIN PCB ASSY [A,CN]
£
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14
MAIN PCB ASSY [A,CN] MAIN PCB ASSY [A,CN]
£
£
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MAIN PCB ASSY [K]
£
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15
MAIN PCB ASSY [K] MAIN PCB ASSY [K]
£
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16
MAIN PCB ASSY [K] AMP PCB ASSY
£ £
£ £
£ £
£
£
£
£
£
£
£
AMP PCB ASSY £
£
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£
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£
FRONT PCB ASSY [E]
17
FRONT PCB ASSY [E] FRONT PCB ASSY [A,K]
FRONT PCB ASSY [CN]
FRONT PCB ASSY [A,K]
18
MULTI PCB ASSY DSP PCB ASSY
DSP PCB ASSY
VIDEO PCB ASSY [E,A,CN]
£
£
£
VIDEO PCB ASSY [K]
19
VIDEO PCB ASSY [K] ST-BY PCB ASSY [E]
£
£
£
£
£
£
£
£
ST-BY PCB ASSY [A]
COMPONENT PCB ASSY
£
£
£
£
£
£
£
£
£
ST-BY PCB ASSY [E]
£
£
£
£
£
£ £
£
£
£
£
£ £
£
20
ST-BY PCB ASSY [CN] ST-BY PCB ASSY [K]
£ £
£ £
£
£
£ £
£
£
£
£
£
£ £
£ £
£
£
£ HP PCB ASSY [E,A,K]
£
£
HP PCB ASSY [CN]
£
ST-BY PCB ASSY [K]
POWER SW PCB ASSY
£
£ £
£
£
£
ST-BY SW PCB ASSY
£
£
£
£
21
5 INCLUDED ACCESSORIES
INCLUDED ACCESSORIES
22
E
A
B
D
C
FL
C
SL
FR
SR
GND
GND
GND
SW
SBL
GND
-12V
GND
GND
SBR
GND
+12V
1
NC
OSD DATA
OSD CLK
OSD CE
S1
S2
VIDEO MUTE
S-VIDEO DET
VSYNC-IN
NJM2506 CNTR
VIDEO +12V
2
SCHEMATIC DIAGRAM
4588/49400 SCDIN
4588/49400 SCCLK
CS49400 SCS
49400 INTERQ
49400FINTERQ
49400 RESET
49400 SCDIO
49400 FCS
DSP MUTE
AK4558 CE
AK4558 DO
AK4558 P/D
DSP5V
DSP GND
DSP GND
AD F/L
3
AG-15D/AG-7D
GND
AD F/R
1157 CLK
1157 DATA
1157 LATCH
-30V
GND
GND
+5V6
KEY3
KEY2
KEY1
FLT DATA
FLT CLK
FLT CE
ST/BY LED
FUN DN
MAIN PCB (1/2)
FUN UP
RMC
VR DN
VR UP
FL B+SW
PLL CE
DATA IN
4
CLK
DATA OUT
DGND
NC
NC
CH GND
+12V
AF OUT
L-OUT
GND
R-OUT
NC
TUNED
STEREO
49400SCDIO
5
6
7
C
SR
SL
FL
FR
SBL
SBR
GND
GND
GND
GND
GND
GND
SI
P/T
P/D
SO
GND
Vss
-12V
CLK
FRLY
VPP
+12V
VDD
-30V
S-RLY
C-RLY
HP RLY
HP DET
ST RLY
SB-RLY
A_GND
RESET
+BMUTE
+12V(VI)
DSP_+5V
DSP_GND
CPU_+5V6
PREOUT_SW
+5V6(ST/BY)
B+CTR(LIMIT)
8
AG-15D/AG-7D
1 st Issue; November 2004
AV Digital Home Theater Receiver
SCHEMATIC DIAGRAM AG-15D/AG-7D MAIN PCB (2/2)
1 2 3 4 5 6 7 8
A
B
C
GND
SHORT P/T
+12V
D
E
AG-15D/AG-7D
AV Digital Home Theater Receiver
1 st Issue; November 2004
SCHEMATIC DIAGRAM AG-15D/AG-7D DSP PCB
1 2 3 4 5 6 7 8
A
B
C
D
-12V
+12V
FL
GND
FR
GND
SL
GND
SR
GND
SBL
GND
4588/49400 CDIN
SBR
4588/49400 CCLK
GND
CS49400 SCS
C
49400 INTERQ
GND
49400FINTERQ
SW
49400 RESET
49400 SCD IO
49400 FCS
DSP MUTE
AK4558 CE
AK4558 DO
AK4558 P/D
E DSP 5V
DSP GND
DSP GND
AG-15D/AG-7D
AD F/L
GND
AD F/R
AV Digital Home Theater Receiver
1 st Issue; November 2004
SCHEMATIC DIAGRAM AG-15D/AG-7D VIDEO PCB, COMPONENT PCB, MIC PCB
1 2 3 4 5 6 7 8
NJM2506 CNTR
S-VIDEO DET
VIDEO MUTE
VIDEO +12V
OSD DATA
VSYNC-IN
OSD CLK
A
OSD CE
NC
S1
S2
B
C
D
E
AG-15D/AG-7D
AV Digital Home Theater Receiver
1 st Issue; November 2004
SCHEMATIC DIAGRAM AG-15D/AG-7D AMP PCB
1 2 3 4 5 6 7 8
A
B
C
D
E
AG-15D /AG-7D
AV Digital Home Theater Receiver
1 st Issue; November 2004
SCHEMATIC DIAGRAM AG-15D/AG-7D AMP PCB
1 2 3 4 5 6 7 8
A
B
C
D
E
AG-15D/ AG-7D
AV Digital Home Theater Receiver
1 st Issue; November 2004
SCHEMATIC DIAGRAM AG-15D/AG-7D ST/BY SW PCB, MULTI PCB, FRONT PCB, HP PCB, ST/BY PCB, POWER SW PCB
1 2 3 4 5 6 7 8
A
FLT701
B
C
ST/BY LED
FL B+S/W
FLT DATA
FLT CLK
FUN UP
FUN DN
FLT CE
VR UP
VR DN
KEY1
+5V6
KEY3
KEY2
RMC
GND
GND
-30V
D
ST RLY
+5V6(ST/BY)
GND
P/D
E
AG-15D/AG-7D
AV Digital Home Theater Receiver
1 st Issue; November 2004