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CONTENTS
SPECIFICATION ...................................................................................................................................................

MEASUREMENTS AND ADJUSTMENTS .........................................................................................................

PIN FUNCTION ....................................................................................................................................................

WIRING DIAGRAM ..............................................................................................................................................

BLOCK DIAGRAM................................................................................................................................................

SCHEMATIC DIAGRAM ....................................................................................................................................

PRINTED CIRCUIT BOARDS .............................................................................................................................

EXPLODED VIEW...............................................................................................................................................

ELECTRICAL PARTS LIST .................................................................................................................................




Specifications
AMP Section FM Section
Power output : 35 W+35W Tuning Rane : 87.50MHz~ 108.00MHz
(8 , 1kHz, 0.5%) (50kHz steps)[EUR]
Total harmonic distirtion : 35 W+35W 76.0MHz~ 90.0MHz
(40W, 1kHz, 8 ) (100kHz steps)[DM]
S/N Ratio(inout Short) : 87.50MHz~ 108.00MHz
Phono : 60dB(IHF-A) (100kHz stepe)[T/C]
CD, Tuner, Aux, Tape : 90dB(IHF-A) Usable Sensitivity(IHF) : Mono:15dBf
Input Sensitivity/Impedance : 50dB Quieting Sensitivity :
Phono(MM) : 2.5mV/47k Mono : 30dBf
CD, Tuner, Aux, Tape : 200mV/47k Stereo : 40dBf
Channel Separation : 60dB Image Reiection Ratio : 40dBf
(Input Short) : (1kHz, 1W, B.P.F) Frequency Response : 30Hz~ 15kHz
Residual noise : 60mV +0.5dB/-3dB
Frequency response : 20Hz to 65kHz Distortion(1kHz) :
Tone control : Mono :0.4%
Bass : 10dB(100Hz) Stereo : 0.5%
Treble : 10dB(100Hz) Signal-to-Noise Ratio(at 65dBf, 1kHz) :.
Required speaker impedance : 8 to 16 Mono : 65dB
Stereo : 60dB
General AM suppression Ratio : 40dB
Power Requirements : 230V AC, 50Hz[EUR] Stereo Separation(1kHz) : 30dB
120V AC, 60Hz[T/C] AM Section
Power Consumption : 85W Tuning Rane : 522kHz~ 1620kHz
Dimensions(W x H x D) : 215 x 110 x 307 (9kHz steps)[EUR/DM]
Weight(net) : 4Kg 530MHz~ 1720MHz
(10kHz steps)[T/C]
87.50MHz~ 108.00MHz
Usable Sensitivity : 55dB/m
Distortion(1kHz) : 1.5%
Signal-to-Noise Ratio : 35dB

Standard accessories
Remote control unit :1
Operator's manual :1
AM Loop Antenna :1
FM Antenna :1
FM Matching Transformer : 1 (T/C)

2
SERVICE MANUAL
MEASUREMENTS AND ADJUSTMENTS
IC FUNCTION (Micom BVITMP87PM78F)
PIN No. SYMBOL I/O DESCRIPTION
1 Vdd I +5V
2 NC - NO Connection
3 Func, Mute O Function Mute ON/OFF Output
4 NC - No Connection
5 Tuner-Nute O Tuner Mute Output
6 Stereo/Mono O Stereo/Mono Switching Output
7~9 Func, Indicator O Function LED Drive Data Output
10 NC - No connection
11 RDS-DATA I RDS DATA Output
12 FM-L I FM/AM Switching Output
13 RDS-CLK I RDS CLOCK input
14 Stereo-IN I Stereo Display input
15 Tuned-IN I Tuned Display input
16 Protect-IN I Protection input
17~21 Key Input I Resistor Divide Key Control Input
22 Vss - GND
23 Vass - GND
24 Varef - Vdd(+5V)
25 Vdd - +5V
26 Back-up I Backup Mode control
27 Vss - GND
28~29 Func, Up/Down I Function UP/DOWN INput
30 Vss - GND
31 XIN I Crstal element Connection Terminal
32 XOUT O Crstal element Connection Terminal
33 RESET I RESET Input
34 Remote-In I Remote Control Data Input
35 BUS OUT O System Control Signal Output
36 BUS IN I System Control Signal Input
37 SPK ON/OFF O Speker ON/OFF Output
38 NC - NO Connection
39 -20dB Mute O -20dB Mute Output
40 NC - No Connection
41 PLL CE O PLL Serial Chip Enable Output
42 PLL DATA O PLL Serial Data Output
43 PLL CLK O PLL Serial CLOCK Output
44 Option O Amp/Receiver Option
45 NC - No Connection
46 STB O Function IC Signal Output
47 CLK O Function IC Signal Output
48 DATA O Function IC Signal Output
49 NC - No Connection
50 Vkk - VFLP (-33V)
51~61 FIP GRID O FIP GRID Output
62~82 FIP ANODE O FIP ANODE Output
83~85 Option O Region Option
86 Option O Display Option
87 Option O RDS ON/OFF Option
88 Option O Model Option
89 Standby O Standby/ Direct Option Output
90 VOL OP O VOL UP
91 VOL DOWN O VOL DOWN
92 VOL LED O VOL LED Display
93 Power ON/Off O Power ON/OFF Output
94 Standby LED O Standby LED ON/OFF Output
95~100 NC No Connection



6
SERVICE MANUAL
7
EXPLODED VIEW LIST




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8
SERVICE MANUAL
9
10
MAIN PCB ASSY MAIN PCB ASSY




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£ FRONT PCB ASSY
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11
SERVICE MANUAL
TUNER PCB ASSY




12
SERVICE MANUAL
INCLUDED ACCESSORIES




13
SERVICE MANUAL
SCHEMATIC DIAGRAM AG-H300
1 2 3 4 5 6 7 8




A




B




C




D




NOTES:
1. Resistor values are in ohms (k=kilo-ohms, M=megohms).
2. Capacitor values are in microfarads (p=picofarads).
3. £Parts marked with this sign are safety critical components.
E They must always be replaced with identical components-refer
to the appropriate parts list and ensure exact replacement.




£
AG-H300
AM/FM STEREO RECEIVER
1 st Issue; June 2001
SCHEMATIC DIAGRAM AG-H300
1 2 3 4 5 6 7 8




A




B




C




D




E



INSTRUCTIONS FOR SERVICE PERSONNEL
BEFORE RETURNING APPLIANCE TO THE CUSTOMER, MAKE LEAKAGE-
CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED
NOTES:
1. Resistor values are in ohms (k=kilo-ohms, M=megohms).
2. Capacitor values are in microfarads (p=picofarads).
3. £Parts marked with this sign are safety critical components. £
AG-H300
PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT.
They must always be replaced with identical components-refer
to the appropriate parts list and ensure exact replacement. AM/FM STEREO RECEIVER
1 st Issue; June 2001
SCHEMATIC DIAGRAM AG-H300
1 2 3 4 5 6 7 8




A




B




C




D




E



INSTRUCTIONS FOR SERVICE PERSONNEL
BEFORE RETURNING APPLIANCE TO THE CUSTOMER, MAKE LEAKAGE-
CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED
NOTES:
1. Resistor values are in ohms (k=kilo-ohms, M=megohms).
2. Capacitor values are in microfarads (p=picofarads).
3. £Parts marked with this sign are safety critical components. £
AG-H300
PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT.
They must always be replaced with identical components-refer
to the appropriate parts list and ensure exact replacement. AM/FM STEREO RECEIVER
1 st Issue; June 2001