Pioneer MJ-D508 Service Manual page 26

MJ-D508
Waveforms
Note: The encircled numbers denote measuring point in the schematic diagram and the PCB connection diagram.
IC101-pin35 (ADIPO)
1
(CORE MAIN UNIT ASSY)
MODE: PLAY
DISC: GGF1328 (MMD–212)
DC500mV/div., 10 µSec/div.
IC102-pin50 (EFMO)
4
(CORE MAIN UNIT ASSY)
MODE: REC
DISC: GGF1328 (MMD–212)
DC1V/div., 0.2 µSec/div.
IC102-pin77 (TE MON)
6
(CORE MAIN UNIT ASSY)
MODE: PLAY
DISC: TGTS1 or MMD–110
DC500mV/div., 2mSec/div.
CN103-pin1 (SLD +)
8
(CORE MAIN UNIT ASSY)
MODE: PLAY
DC500mV/div., 2mSec/div.
26
IC101-pin30 (WBO)
2
(CORE MAIN UNIT ASSY)
MODE: PLAY
DISC: GGF1328 (MMD–212)
DC1V/div., 10 µSec/div.
–– GND
IC102-pin75 (FE MON)
5
(CORE MAIN UNIT ASSY)
MODE: PLAY
DISC: TGTS1 or MMD–110
DC100mV/div., 2mSec/div.
–– GND
Measurement Method
39 kΩ
TE MON
–– GND
REFO
(MD Mechanism Assy TP)
CN103-pin4 (SP +)
9
(CORE MAIN UNIT ASSY)
MODE: PLAY
DC500mV/div., 5mSec/div.
–– GND
3
–– GND
Measurement Method
FE MON
–– GND
To Oscilloscope
820pF
10
–– GND
IC102-pin1 (EFM MON)
(CORE MAIN UNIT ASSY)
MODE: PLAY
DISC: TGTS1 or MMD–110
DC500mV/div., 0.5mSec/div.
–– GND
39 kΩ
To Oscilloscope
820pF
REFO
(MD Mechanism Assy TP)
CN105-pin1 (LOAD –)
(CORE MAIN UNIT ASSY)
MODE: STOP
DC1V/div., 1mSec/div.
–– GND