Microprocessor Information; Amp Adjustment; Confirmation Of Idling Current Of Main P. C. B - Yamaha RX-V1200 Service Manual

18. MICROPROCESSOR INFORMATION

The version, checksum and the port specified by the microprocessor are displayed. The signal is processed using
EFFECT OFF. The checksum is obtained by adding the data at every 16 bits for each program area and expressing the
result as a 4-figure hexadecimal data.
"PORT:0 0 0 0 0 0 0 0"
bit 7 6 5 4 3 2 1 0
*2 (Tuner mode)
Tuner mode 0
I AMP ADJUSTMENT
Confirmation of Idling Current of Main (1) P. C. B.
• Right after power is turned on, confirm that the voltage
across the terminals of R64 (Main Lch), R65 (Main
Rch), R61 (Center), R59 (Rear Lch), R60 (Rear Rch),
R126 (Rear Cch) are between 0.1mV and 10.0mV.
• If it exceeds 10.0mV, open (cutoff) R39 (Main Lch), R40
(Main Rch), R37 (Center), R34 (Rear Lch), R35 (Rear
Rch), R117 (Rear Cch) and reconfirm the voltage.
• Confirm that the voltage is 0.20mV ~ 15.0mV after 60
minutes.
Version
Release 1 figure / Main 2 figures / DSP 2 figures / Communication 1 figure / Boot
manufacturer 1 figure / Boot 232c 1 figure
Checksum
A : All P : Program area
Checksum
2 : Boot 232C M : Boot manufacturer
Check of port setting for judging microprocessor function
Display of AAC function detection port state
Model type 0 (*1)
Model type 1 (*1)
Tuner mode 0 (*2)
Tuner mode 1 (*2)
Tuner with (1) / without (0)
RDS with (1) / without (0)
ZONE2 with (1) / without (0)
VIDEO format: PAL (1) / NTSC (0)
Tuner mode 1 Tuner frequency
0 0 AM: 531-1611kHz/9kHz FM: 76.0-90.0MHz/100kHz
0 1 AM: 531-1611kHz/9kHz FM: 87.5-108.0MHz/50kHz
1 0 AM: 530-1710kHz/10kHz FM: 87.5-107.9MHz/200kHz
R destination, Port6: LOW AM: 530-1710kHz/10kHz FM: 87.5-108.0MHz/100kHz
1 1
RX-V1200/RX-V1200RDS/HTR-5490/RX-V2200
*1 (Model type)
Type o Type 1
HIGH AM: 531-1611kHz/9kHz FM: 87.5-108.0MHz/50kHz
0.1mV ~ 10.0mV
(DC)
R64 (MAIN Lch)
R65 (MAIN Rch)
R61 (CENTER)
Cut off
R39 (MAIN Lch)
R40 (MAIN Rch)
R37 (CENTER)
R34 (REAR Lch)
R35 (REAR Rch)
R117 (REAR Cch)
Model type
0 0 V1200
1 0 V2200
0 1 V3200
1 1 AX3200
0.1mV ~ 10.0mV
(DC)
R59 (REAR Lch)
R60 (REAR Rch)
R126 (REAR Cch)
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