Pioneer DJM-850-K Service Manual page 67

5
[Use of this mode during repair]
• For failure judgment of the rotary VRs
As a guide, amplitude values higher than +4 or lower than -4 may be judged as failure.
The VRs can be set to any position during measurement. Possible symptoms are shown below.
• The volume changes arbitrarily.
• Interrupted sound leakage occurs even if the volume is decreased to the minimum at the Master or ZONE.
• The MIDI signal is output even if the corresponding VR is not operated.
• For operation check of a rotary VR after replacement
• Group 1
Rotary VRs whose AD conversion values can be confirmed:
• CH1 TRIM control, CH1 EQ/ISO HI control, CH1 EQ/ISO MID control, CH1 EQ/ISO LOW control,
CH1 COLOR control, EQ HI control, EQ LOW control
VR to be tested
CH1 TRIM control
CH1 EQ/ISO HI control
CH1 EQ/ISO MID control
CH1 EQ/ISO LOW control
CH1 COLOR control
EQ HI control
EQ LOW control
*As an AD value that is displayed on the FL display is the one before a hysteresis removal process,
and as it has an amplitude, an error of about ±2 may be produced.
• Group 2
Rotary VRs whose AD conversion values can be confirmed:
• CH2 TRIM control, CH2 EQ/ISO HI control, CH2 EQ/ISO MID control, CH2 EQ/ISO LOW control,
CH2 COLOR control, MIXING control, LEVEL control
VR to be tested
CH2 TRIM control
CH2 EQ/ISO HI control
CH2 EQ/ISO MID control
CH2 EQ/ISO LOW control
CH2 COLOR control
MIXING control
LEVEL control
*As an AD value that is displayed on the FL display is the one before a hysteresis removal process,
and as it has an amplitude, an error of about ±2 may be produced.
5
6
FL Display Name
CH1_T
CH1_H
CH1_M
CH1_L
CH1_C
MIC_H
MIC_L
FL Display Name
CH2_T
CH2_H
CH2_M
CH2_L
CH2_C
HP_MX
HP_LV
6
7
Remarks
"-∞": 000
"+9": 3FF
"-∞/-26": 000
"+6": 3FF
"-∞/-26": 000
"+6": 3FF
"-∞/-26": 000
"+6": 3FF
"LOW": 000
"HIGH": 3FF
"-12": 000
"+12": 3FF
"-12": 000
"+12": 3FF
Remarks
"-∞": 000
"+9": 3FF
"-∞/-26": 000
"+6": 3FF
"-∞/-26": 000
"+6": 3FF
"-∞/-26": 000
"+6": 3FF
"LOW": 000
"HIGH": 3FF
"CUE": 000
"MASTER": 3FF
"-∞": 000
"0": 3FF
DJM-850-K
7
8
A
B
C
D
E
F
67
8