Yamaha CS1D, Service Manual

Page: 104 / 150

CS1D
98
INSPECTION
1. Range of Applicability
These standards apply to the CS1D.
2. Preparations
2-1. Conditions
For details on the connection method, refer to the Test Program Specifications KES-92654.
The function generator used for inspection must be the Sony Tektronix AFG310 or equivalent. When using the AFG310, the
settings are as follows.
FUNC: PULS
MODE: CONT
MODUL: OFF
AMPL:
1.800
OFFSET: 0.900
Unless otherwise specified, the conditions are as follows.
· 0 dBu = 0.775 Vrms
· The oscillator output impedance is to be 150
Ω
.
· The input impedance for the oscilloscope, level meter, etc. is to be at least 100 k
Ω
.
· Noise measurement is corrected with a 12.7 kHz, -6 dB/octave low-pass filter.
(Measure the average value, not the effective value.)
· Distortion ratio measurement is corrected with an 80 kHz, -6 dB/octave low-pass filter.
· The load for inspecting analog output uses the following conditions.
· Connect PW1D to DC power input A and inspect.
MONITOR OUT 1L,1R,2L,2R: 600
Ω
CUE OUT L,R: 600
Ω
PHONES: 8
Ω
2-2. Loading the Firmware
2-3. Test Program
For details on the starting method etc., refer to the Test Program Specifications KES-92654.
3. Inspection
3-1. Inspection with Test Program
· Inspect based on the Test Program Specifications KES-92654.
3-2. MONITOR OUT AL, AR, BL, BR
Conditions: Inspect according to 16. ANALOG OUT in the Test Program Specifications KES-92654.
(1) Gain (AL, AR, BL, and BR)
Conditions: MONITOR OUT level maximum
(2) f characteristic (AL, AR, BL, and BR)
Conditions: MONITOR OUT level maximum
1 kHz reference for tolerance range
(3) Distortion (AL, AR, BL, and BR)
Conditions: MONITOR OUT level maximum
Input frequency Input level Rated output level Tolerance range
1 kHz +10 dBu +10 dBu +10 +/- 1.0 dBu
Input frequency Input level Tolerance range
20 Hz
20 kHz
+10 dBu
+10 dBu -2 to +1.0 dB
-2 to +1.0 dB
Input frequency Output level Tolerance range
1 kHz
1 kHz +10 dBu
+23 dBu 0.02 % max.
0.01 % max.
Input frequency Input level Rated output level Tolerance range
1 kHz +10 dBu +10 dBu +10 +/- 1.0 dBu
Input frequency Input level Tolerance range
20 Hz
20 kHz
+10 dBu
+10 dBu -2 to +1.0 dB
-2 to +1.0 dB
Input frequency Output level Tolerance range
1 kHz
1 kHz +10 dBu
+23 dBu 0.02 % max.
0.01 % max.
Input frequency Input level Rated output level Tolerance range
1 kHz +10 dBu +10 dBu +10 +/- 1.0 dBu
Input frequency Input level Tolerance range
20 Hz
20 kHz
+10 dBu
+10 dBu -2 to +1.0 dB
-2 to +1.0 dB
Input frequency Output level Tolerance range
1 kHz
1 kHz +10 dBu
+23 dBu 0.02 % max.
0.01 % max.
Input frequency Input level Rated output level Tolerance range
1 kHz +10 dBu +10 dBu +10 +/- 1.0 dBu
Input frequency Input level Tolerance range
20 Hz
20 kHz
+10 dBu
+10 dBu -2 to +1.0 dB
-2 to +1.0 dB
Input frequency Output level Tolerance range
1 kHz
1 kHz +10 dBu
+23 dBu 0.02 % max.
0.01 % max.
The firmware used must be the “CS1D Firmware” (managed with the already drawn CD-R assembly drawing (3JL-XY714A0))
of the PM1D System Software with a version later than the version shown on the cover. For details on the firmware writing
method, refer to theTest Program Specifications KES-92652.