Teac AG-790 User manual

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 supplied pripor to this manual.
Parts marked with this sign are safety critical components.
They must be replaced with designated components.
Destination of product is expressed by [ ] mark and ensure
exact replacement: [EUR]: EUROPE, [UK]: U.K., [USA]: U.S.A.
AM/FM STEREO RECEIVER
AG-790E
CONTENTS
Effective : June 2010 G-1008A
1. SPECIFICATIONS ………………………………………………… 2
2. BRIEF OVERVIEW OF LSI ……………………………………… 3
3. EXPLODED VIEWS AND PARTS LISTS ……………………… 6
4. PC BOARDS AND PARTS LISTS ……………………………… 8
5. INCLUDED ACCESSORIES………………………………………14
Model name of the AG-790 has been changed to AG-790E from S/N 0AL0001 and higher to
cope with Eco Power requirement. Use this service manual according to the S/N of the unit.

–2 –
AG-790E
1. SPECIFICATIONS
Amplifier Section
Output Power ……………………… 90 + 90 watts RMS
(0.9 % THD, 1 kHz, 8 ohms)
Total Harmonic Distortion 0.05 % (at 80 watts,1 kHz)
Input Sensitivity/Impedance PHONO: 6.5 mV/22 kohms
LINE: 230 mV/22 kohms
Signal-to-Noise Ratio ………… PHONO: 75 dB (IHF-A)
LINE: 90 dB (IHF-A)
Tone Control ………………… BASS: ±10 dB at 100 Hz
TREBLE: ±10 dB at 10 kHz
Loudness Control …………………… +4 dB at 100 Hz
FM Tuner Section
Tuning Range ………………… 87.5 MHz to 108.0 MHz
Usable Sensitivity ………………… Mono: 10 dBµV/m
50 dB Quieting Sensitivity ………… Mono: 15 dBµV/m
Stereo: 33 dBµV/m
Image Rejection Ratio …………………………… 35 dB
AM Suppresion Ratio ……………………………… 50 dB
Harmonic Distortion (1 kHz) Mono: 0.5 %, Stereo: 0.5 %
Frequency Response ………… 20 Hz to 15 kHz, –3 dB
Stereo Separation (1 kHz) ………………………… 35 dB
Signal-to-Noise Ratio …………………… Mono: 70 dB
Stereo: 65 dB (IHF-A)
AM Tuner Section
Tuning Range …… 522 kHz to 1,620 kHz, 9 kHz steps
[EUR], [UK]
530 kHz to 1,720 kHz, 10 kHz steps
[USA]
Usable Sensitivity…………………………………… 55 dB
Total Harmonic Distortion ……… 1 % at 100 dBµV/m
Signal-to-Noise Ratio …………… 40 dB at 100 dBµV/m
General
Power Requirements
230 V AC, 50 Hz [EUR], [UK]
120 V AC, 60 Hz [USA]
Power Consumption ……………… 280 W [EUR], [UK]
2.5A [USA]
0.6 W (standby)
AC Outlet (Total 100 W max) …………Unswitched x 1
Dimensions (W x H x D) ……… 435 x 144 x 330 mm
Weight (net) …………………………… 7.4 kg (16.31 lb)
Operating temperature ………………… +5°C - +35°C
Operating humidity …… 5% - 85% (no condensation)
Storage temperature …………………… -20°C - +55°C
Standard Accessories
AM Loop Antenna x 1
FM Antenna x 1
Remote Control Unit (UR-415B) x 1
Battery (AA, R6, SUM-3) x 2
Owner’s manual x 1
Warranty card x 1
*LINE means CD, TAPE MONITOR , VIDEO/AUX.

–3 –
AG-790E
2. BRIEF OVERVIEW OF LSI
Control pins
Pin Configuration (Top View)
CMOS 8-Bit MCU with 61440 bytes Flash memory (PQFP64)
TOSHIMA T5CB5, FRONT PCBA IC91
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
(INT3/TC2) P15
(PD05/PWM5/TC5) P16
(PDO6/PWM6/PPG6/TC6) P17
(SCL) P50
(SDA) P51
P52
P53
P54
P30
P31
P32
P33
P34
P35
P36
P37
P74 (AIN12)
P73 (AIN11)
P72 (AIN10)
P71 (AIN9)
P70 (AIN8)
P67 (AIN7/STOP3)
P66 (AIN6/STOP2)
P65 (AIN5/STOP1)
P64 (AIN4/STOP0)
P63 (AIN3)
P62 (AIN2)
P61 (AIN1)
P60 (AIN0)
AVDD
VAREF
P07 (INT2)
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16
P14 (TC4/PDO4/PWM4/PPG4) P13 (TC3/PDO3/PWM3) P12 (PPG) P11 (DVO) P10 (TC1) P17 P46 (SCK2) P45 (SO2) P44 (SI2) P43 P42 (TxD2) P41 (RxD2) P40 P77 (AIN15) P76 (AIN149 P75 (AIN13)
VSS
XIN
XOUT
TEST
VDD
(XTIN) P21
(XTOUT) P22
RESET
(STOP/INT5) P20
(INT0) P00
(BOOT/RxD1) P01
(TxD1) P02
(INT1) P03
(SI1) P04
(SO1) P05
(SCK1) P06
Pin No. Control Pin Input/Output Input/Output Circuitry Remarks
VDD VDD
Osc enable
Resonator connecting pins
(High frequency)
R
f= 1.2 MΩ (typ.)
R
O= 0.5 MΩ (typ.)
XIN XOUT
RO
fc
Rf
2 XIN Input
3 XOUT Output

–4 –
AG-790E
Input/Output Ports
VDD VDD
XTEN
Osc enable
Resonator connecting pins
(Low frequency)
R
f= 6 MΩ (typ.)
R
O= 220 kΩ (typ.)
Hysterisis input
Pull-up resistor
R
IN = 220 kΩ (typ.)
R = 100 Ω (typ.)
Tri-state I/O
Histerisis input
R = 100 Ω (typ.)
Sink open drain output
High current output
R = 100 Ω (typ.)
Sink open drain output
Histerisis input
R = 100 Ω (typ.)
Initial “High-Z”
Initial “High-Z”
Data output
Data output
Output latch input
Disable
Pin input
Pin input
Initial “High-Z”
Data output
Output latch input
Pin input
Note: The TEST pin of the T5CB5 does not have a pull-down resistor. Fix the TEST pin at low-level.
R = 100 Ω (typ.)
Address-trap-reset
Watchdog-timer-reset
System-clock-reset
RO
fs
Rf
RRIN
6 XTIN Input
7 XTOUT Output
3 TEST Input
11 P1 I/O
13 P3 I/O
12 P2 I/O
VDDVDD
XTIN XTOUT
R
R
R
VDD
VDDVDD
VDD
8 RESET Input
Pin No. Port I/O Input/Output Circuitry Remarks
R

–5 –
AG-790E
Sink open drain output
High current output
Histerisis input
R = 100 Ω (typ.)
Initial “High-Z”
Data output
Output latch input
Output latch input
Output latch input
Pin input
Key-on wakeup
Pin input
15 P5 I/O R
Sink open drain output or
C-MOS output
Histerisis input
R = 100 Ω (typ.)
Tri-state I/O
R = 100 Ω (typ.)
Initial “High-Z”
Initial “High-Z”
Data output
Data output
Analog input
P-ch control
Disable
Disable
Pin input (Control input)
14 P4 I/O
27 P67 I/O
26 P66 I/O
25 P65 I/O
24 P64 I/O
10 P0 I/O
R
VDD
R
VDD
Output latch input
Pin input
Tri-state I/O
R = 100 Ω (typ.)
Initial “High-Z”
Data output
Analog input
Disable
23 P63 I/O
22 P62 I/O
21 P61 I/O
26 P60 I/O
17 P7 I/O
R
VDD

3. EXPLODED VIEWS AND PARTS LISTS
–6 –
AG-790E
USA
USA
EUR, UK
EUR, UK
S4
S4 S5
S6
40
x2
x2
x6
x5
S6 x2
27
S2
S4
S7
S4
S4
S8
S5
S8
S9
S10
S9
S9
S5
S6
20
23
23
30
31
32
33
29
24
36
37
43
39
39
40
41
42
x2
S3 x13
S1 x3
x3
S2 x3
x4
x6
x3
x3
B
C
C
D
D
D
B
B
x2
x2
x2
x2
x2
x6
x3
x2
x2
x2
x2
x6
x5
S6 x2
S5 x5
A
A
S4 x4
S3
S3 x2
S3 x2
13
12
11
10
9
8
7
6
5
4
2
1
8
15
16
19
34
35
S4
x2
25
27
S1
3
21
S9
S1 x2
22
17
26
38
S4
S3 x2
x2
18
17
S1
21
S9
44

–7 –
EXPLODED VIEW
REF. NO. PARTS NO. DESCRIPTION REMARKS
AG-790E
1 CGU1A375Y WINDOW AG-790
2 CBN1A122 KNOB, VOLUME
3 CMC1A140 RING, SHAFT
4 CGX1A369Z SHEET, LED
5 CGX1A370Z SHEET, LED
6 CGB1A165H8 BADGE, TEAC
7 CGW1A405R4WH10 PANEL, FRONT AG-790 [EUR], [UK]
CGW1A405R4XH10 PANEL, FRONT AG-790 [USA]
8 CMD2A563 BRACKET
9 H/P PCB ASSY ……………………………………… United on FRONT PCBA, see page 11
10 CMK2A010 BRACKET, PCB
11 CBT1A991 KNOB, SPEAKER
12 CBC1A152 KNOB, POWER
13 CBT1A992 KNOB, TUNING
14 CMD1A334 BRACKET, POWER
15 CBT1A994 KNOB, BASS
16 CBT1A993Y KNOB, FUNCTION AG-790
17 HFLSVA09MS10 F.I.P, SVA09MS10
18 CMD1A374 BRACKET, FIP
19 COP12263B FRONT PCB ASSY AG-790MK2 [EUR], [UK]
COP12263D FRONT PCB ASSY AG-790MK2 [USA]
20 CMY1A347 HEATSINK
21 CMD1A387 BRACKET, PCB
22 PCB, FFC SUPPORT ……………………………… United on FRONT PCBA, see page 11
23 AMP PCB ASSY, L/R ……………………………… United on MAIN PCBA, see page 8
24 CLT5U038ZE TRANS, POWER AG-790MK2 [EUR], [UK]
CLT5U038ZU TRANS, POWER AG-790MK2 [USA]
25 POWER SECONDARY PCB ASSY ……………… United on FRONT PCBA, see page 11
26 POWER SW PCB ASSY …………………………… United on FRONT PCBA, see page 11
27 POWER PRIMARY PCB ASSY …………………… United on FRONT PCBA, see page 11
28 Not in use
29 CHG1A113 RUBBER
30 CUA2A168 CHASSIS, BOTTOM
31 CKL2A042H11 FOOT, FRONT
32 CHG1A360 CUSHION, FOOT
33 CKL1A012 FOOT, RUBBER BLACK
34 CNVMB114MA18L TUNER MODULE [EUR], [UK]
CNVMB014MA0J8LS TUNER MODULE [USA]
35 SHIELD PCB W/BN12 ……………………………… United on MAIN PCBA, see page 8
36 COP12264B MAIN PCB ASSY AG-790MK2 [EUR], [UK]
COP12264D MAIN PCB ASSY AG-790MK2 [USA]
37 CHE1A023 MOUNT, PCB
38 CMD1A392 BRACKET, PCB
39 CKF8A172Z PANEL, REAR [EUR], [UK]
CKF9A172Z PANEL, REAR [USA]
40 KMA2A001 TERMINAL, GROUND
41 KHR1A028 BUSHING, AC CORD
42 CJA2B043ZA CORD, POWER [EUR], [UK]
CJA523FBYA CORD, POWER [USA]
43 CKC1A098B25 CABINET, TOP AG-790
44 SUB TRANS PCB ASSY …………………………… United on FRONT PCBA, see page 11
S1 CTW3+8JR SCREW
S2 CHD1A012R SCREW, SPECIAL
S3 CTB3+10JR SCREW
S4 CTB3+6JR SCREW
S5 CTB3+8JFZR SCREW
S6 CTB3+10JFZR SCREW
S7 CTB4+8FR SCREW
S8 CTB4+6FFZR SCREW
S9 CTW3+8J SCREW
S10 CTW3+16G SCREW

–8 –
AG-790E
4. PC BOARDS AND PARTS LISTS
MAIN PCB
CUP12264-1
MAIN PCB
CUP12264-3A
AMP PCB L
SHIELD PCB
W/BN12
CUP12264-3B
AMP PCB R

–9 –
MAIN PCB-A ASSY
REF. NO. PARTS NO. DESCRIPTION REMARKS
AG-790E
COP12264B MAIN PCB ASSY AG-790MK2 [EUR], [UK]
COP12264D MAIN PCB ASSY AG-790MK2 [USA]
┗CUP12264Z PCB, MAIN AG-790MK2 (330x247 FR1/1)
CUP12264-1 MAIN PCB
BK41,42 CMD1A387 BRACKET, PCB
BN42 CWB1C00710047 WIRE ASSY, 7 P 100 MM BLACK (RED)
C264 CCEA1EH331T CAP, ELECT 330 UF/25V
C403,404 CCET80VKL5682NK CAP, ELECT 6800 UF/80 V
C407,409,410,704 CCEA1EH101T CAP, ELECT 100 UF/25V
C705
C413,414 CCEA1EH222E CAP, ELECT 2200 UF/25 V
CN11 CJP17GA115ZY WAFER, CARD CABLE [EUR], [UK]
CJP15GA115ZY WAFER, CARD CABLE [USA]
CN12 CJP04GA98ZM WAFER
CN31-1,31-2 CJP14GA221ZB FEMALE HEADER, 14P 2.54 MM STRAIGHT
CN43 CJP03GA89ZY WAFER
CN91 CJP07GI237ZW WAFER, LOCKING TYPE STRAIGHT 2.5 MM
CN92 CJP21GA115ZY WAFER, CARD CABLE
CN93 CJP03GI236ZW WAFER, LOCKING TYPE,STRAIGHT 2 MM
D401 HVDKBU804F DIODE, BRIDGE KBU804F
D403~405,409,501 CVD1SS133MT DIODE, 1SS133
D406 HVDMTZJ6.2BT DIODE, ZENER MTZJ6.2B 1/2 W
D701 HVDMTZJ5.1BT DIODE, ZENER MTZJ5.1B 1/2 W
GND1 HJT1A025 PALTE, EARTH
IC1 CVIKIA7812APIJA I.C HEAT SINK ASSY (CMY2A223)
┗HVIKIA7812API I.C, REGULATOR KIA7812API
CMY2A223 HEATSINK
CTB3+8JR SCREW
IC2 HVIKIA7912PI I.C, REGULATOR KIA79XXPI
IC21,22 HVINJM2068MDTE1 I.C, OP AMP NJM2068MD-TE1
IC23 CVITDA7440D I.C, VOLUME TDA7440D SO-28P
IC24 HVICD4066BM96 I.C, SWITCH CD4066BM96
IC25 HVINJM4556AL I.C, H/P NJM4556AL
JK21 CJJ4R019W TERMINAL, IN/OUT
JK22 CJJ4P014W JACK, IN/OUT
JK41 CJJ5Q006Z TERMINAL, SPEAKER
L401,402 CLEY0R5KAK COIL, SPEAKER 0.5UH
L403 HLQ02C100KT COIL, AXAIL (10UH)
Q201,202,414,415 HVTKRC107MT T.R, KRC107M
Q416
Q203,206,411~413 HVTKRA107MT T.R, KRA107M
Q503
Q205,501,502,702 HVTKTC2874BT T.R, MUTE KTC2874B
Q703
Q402 CVTKTC1027YT T.R, KTC1027Y
Q504 HVTKTC3198YT T.R, KTC3198Y
Q505 HVTKTA1268GRT T.R, KTA1268GR
Q701 HVTKTA1267YT T.R, KTA1267Y
R405,417,418 CRG1ANJ680H RES, METAL OXIDE FILM 68 OHM 1W J
RY42~44 CSL3A018ZE RELAY G5PA-28-MC , DC12V
S401 CST1A010Z SW, TACT
TH51 CRTMM8003 POSISTOR ASSY

–10 –
MAIN PCB-A ASSY
REF. NO. PARTS NO. DESCRIPTION REMARKS
AG-790E
CUP12264-3A AMP PCB L
BN31A CJP14GB142ZB PIN HEADER (14PIN, 2.54 MM, ANGLE)
C305A,306A CCEA2AH101E CAP, ELECT 100 UF/100 V
D301A~304A CVD1SS133MT DIODE, 1SS133
Q301A~303A,312A HVTKTC3200GRT T.R, KTC3200GR
Q304A,305A HVTKTA1024YT T.R, KTA1024Y
Q306A HVTKTC3206YAT T.R, KTC3206YA
Q307A HVTKTA1360Y T.R, PRE DRIVE KTA1360Y
Q308A HVTKTC3423Y T.R, PRE DRIVE KTC3423Y
Q309A HVTKTC3114A T.R, BIAS KTC3114A
Q310A HVT2SD2560 T.R, POWER 2SD2560
Q311A HVT2SB1647 T.R, POWER 2SB1647
R330A CRF5EKR27HX2K RES, CEMENT 0.27 OHM
CUP12264-3B AMP PCB R
BN31B CJP14GB142ZB PIN HEADER (14PIN, 2.54 MM, ANGLE)
C305B,306B CCEA2AH101E CAP, ELECT 100 UF/100 V
D301B~304B CVD1SS133MT DIODE, 1SS133
Q301B~303B,312B HVTKTC3200GRT T.R, KTC3200GR
Q304B,305B HVTKTA1024YT T.R, KTA1024Y
Q306B HVTKTC3206YAT T.R, KTC3206YA
Q307B HVTKTA1360Y T.R, PRE DRIVE KTA1360Y
Q308B HVTKTC3423Y T.R, PRE DRIVE KTC3423Y
Q309B HVTKTC3114A T.R, BIAS KTC3114A
Q310B HVT2SD2560 T.R, POWER 2SD2560
Q311B HVT2SB1647 T.R, POWER 2SB1647
R330B CRF5EKR27HX2K RES, CEMENT 0.27 OHM
SHIELD W/BN12 PCB
BN12 CJP04GB99ZM WAFER
CMY1A347A HEATSINK ASSY
┗CHD1A012R SCREW, SPECIAL
CMY1A347 HEATSINK
CTB3+8JR SCREW
CTW3+8JR SCREW