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SERVICE MANUAL
TR-D2000
AM/FM Stereo Double Tuner
Effective : July, 2003 S-0097A
1 SPECIFICATIONS
FM Tuner Section (Without notes 98.1 MHz, 65 dBf)
NOTES Tuning Range .................. 87.5 MHz 107.9 MHz (200 kHz steps)
Usable Sensitivity (IHF) ............................................ Mono: 15 dBf
PC boards shown are viewed from parts side. 50 dB Quieting Sensitivity................ Mono: 21 dBf, Stereo: 41 dBf
The parts with no reference number or no parts number in the Total Harmonic Distortion (1 kHz) ...... Mono: 0.3%, Stereo: 0.4%
exploded views are not supplied. Frequency Response ............................ 30 Hz 15 kHz, 1.5 dB
As regards the resistors and capacitors, refer to the circuit diagrams Stereo Separation (1 kHz) .................................................... 40 dB
contained in this manual. Signal-to-Noise Ratio ........................ Mono: 67 dB, Stereo: 63 dB
£ 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. AM Tuner Section
Tuning Range ........................ 530 kHz 1,710 kHz (10 kHz steps)
Usable Sensitivity ............................................................ 64 dB/m
Total Harmonic Distortion ...................................... 1% at 85 dB/m
Signal-to-Noise Ratio ........................................ 40 dB at 85 dB/m
General
Power Requirements............................................ 120 V AC, 60 Hz
Power Consumption .............................................................. 12 W
Dimensions (W x H x D).................................. 435 x 95 x 270 mm
(17-1/8" x 3-3/4" x 10-5/8")
Weight (net) ...................................................... 4 kg (8-13/16 lbs)
Standard Accessories .............................. Remote Control Unit x 1
Battery (AAA, R03, UM-4) x 2
AM Loop Antenna x 1
FM adapter x 1
RCA Cord x 2
Owner's Manual x 1
Improvements may result in specifications and features
changing without notice.
2
2 RS-232 COMMANDS
General Information:
Data Rate: 19,200 baud
Parity: None
Word length: 8 data bits, 1 stop bit
Handshake: No RTS/CTS handshaking
Connections: simple 3 wire (Rx, Tx, Gnd) interface
Data Entry Protocol:
The serial buss should follow a standard serial communications protocol using Line
oriented ASCII data stream. The command line must be followed with a carriage
return for the unit to respond. The unit should not echo characters received back
to the host.
Command Codes:
Character Range Function Example
X: 0,1 Power Off / On X1 = Power On, X0 = Power Off
T: 1,2 Tuner # T1 = Tuner 1, T2 = Tuner 2
B: 1,2 Band # B1 = AM, Band 2 = FM
P: 00 - 30 Preset # P01 = Preset 1, P30 = Preset 30, P00 (just for status) = No Preset Selected
F: 4 numbers Frequency Setting F0890 = 890 AM, F1045 = 104.5 FM
A: 0,1 Seek Up / Down A0 = Seek Down, A1 = Seek Up
M: 0,1 Step Up / Down M0 = Step Down 1 step, M1 = Step Up 1 step
S: Signal Lock / 1 = locked, 0 = not S00 (just for status) = no signal, no stereo, S01 = invalid
Stereo Presence 1 = stereo, 0 = mono S10 = signal lock (mono), S11 = signal lock (stereo)
Q: Query status ask for tuner status Q1 = Status of Tuner 1, Q2 = Status of Tuner 2
of tuner Q3 = Status of both tuners, 1 then 2
N: 0,1 Preset Step Up / Down N0 = Step Down 1 Preset, N1 = Step Up 1 Preset
L: 01 - 30 Set Preset L01 = Set Station as Preset #1
Command Examples:
T1B2P01 would command tuner #1 to select band 2 (FM) and tune to FM preset #1
T2B1F1070L03 would command tuner #2 to set AM frequency 1070 kHz as AM preset #3
This command however, would not change the current station tuned on Tuner #2
To select a station to be tuned and THEN set that station as a preset, would require two commands:
T2B1F1070 would command tuner #2 to select band 1 (AM) and tune to frequency 1070 kHz.
T2L03 would command tuner 2 to set the currently tuned station (in this example AM 1070) as AM preset #3
Query Example:
Q1 would solicit the following response:
Feedback as to the status of tuner #1, which would include band select, station preset, frequency
tuned, signal lock and stereo presence. The response string would look like this:T1B2P00F1011S11
T1 (tuner 1) B2 (FM), P00 (no preset selected), F1011 (frequency 101.1 MHz), S11 (signal lock & stereo)
Shortcut Commands:
Note: examples below are assuming Tuner 1 is in FM stereo mode and tuned to a station
Command Response/Action
T1N1 Tuner 1 would step up to the next higher preset number
T1L01 Tuner 1 would set the currently tuned station as FM preset #1
T1S10 Tuner 1 would switch the FM mode to mono
T1M1 Tuner 1 would step up the frequency 0.2 MHz
T1A0 Tuner 1 would go into "seek down" mode
T1B1 Tuner 1 would go to AM mode and tune to the last previously tuned AM station
3
3 EXPLODED VIEWS AND PARTS LIST
1
!
@
2
3
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Q
8
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& 9 r % 6
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9
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;
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4
EXPLODED VIEW LIST
£
£
£
INCLUDED ACCESSORIES
5
4 PC BOARDS AND PARTS LIST
FRONT PCB
POWER PCB
MAIN PCB
6
MAIN PCB ASSY Part of GATHER A PCB ASSY (3E9560000A) FRONT PCB ASSY Part of GATHER A PCB ASSY (3E9560000A)
£
£
£
£
£
£
£
£
£
£
£
POWER PCB ASSY Part of GATHER A PCB ASSY (3E9560000A)
£
£
£
7
SCHEMATIC DIAGRAM TR-D2000 MAIN PCB, POWER PCB
1 2 3 4 5 6 7 8
to FRONT PCB to FRONT PCB to FRONT PCB
HARNESS ASSY-TUNER1 9P HARNESS ASSY-TUNER2 8P HARNESS ASSY-FRONT PWR 7P
2
2
R103 R106 J13 J14 J15
C102 47 47
0.01U
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
C104
1
1
1 2 1 2
CE1
DI1
CLK1
DO1
MUTE1
TUNED1
STEREO1
POWER MUTE
GND
CE2
DI2
CLK2
DO2
MUTE2
TUNED2
STEREO2
GND
+5V
GND
-30V
F1
F2
RESET
POWER ON
0.01U
2
2
A R101 R104
2
3.9K 68
Q102
1
1
3
2SC4043S
2
P11
C101 R108 15FE-BT-VK-N
Q101 C105 68
1
1 2 3
2SC4043S 1 2 1 2 1 1
0.01U to TUNER UNIT 1 2
2
0.01U 2 3
R107
1
1 2 4
2.2K P101 5 J2A
2
2
2
1
R109 2P-EH 6 R701 470 4RCA
R110 R102 R105 10 C103
1
7 1 2 1
22 1.2K 470 0.01U 8
TUNER 1
to TUNER UNIT 1
2
9 L
5
1
1
1
1
2
10 R702 10K C701
11 1 2 3 470P
12
13
2
2
Q701
2
14
R203 R206 R601 100K 2SC2878B
1
15 Q651
C202 47 47 1 2
0.01U C204 R602 100K 2SA1015GR
J1
1
1
1 2 1 2 1 2 1 2
AJ-1031 J2B
4RCA
1
1
0.01U C601 R801 470
2
2
1 0.01U C602 1 2 2
FM R201 R204 MYLER TUNER 1
2
2
2
3.9K 68 R
23
5
2
1
R210 R802 10K
2
2
R91 22 Q202
1
1
2 3 R651 1 2 3
220 2SC4043S
2
10K C801
1
C201 P208 P12 Q801 470P
1
2
1
Q201 C205 68