Measuring Method And Waveforms; Digital Pcb Test Point - Denon RCD-M40 Service Manual

MEASURING METHOD AND WAVEFORMS

Connect the GND (-) probe of the oscilloscope to the specified reference voltage points to check the waveforms.
NOTES
Measuring Disc :
(It is recommended to use extension wires between the probe and test points.)
• When watching the HF waveform, use the extending wire as short as possible.
• When the HF waveform is noisy or the eye-pattern is unidentifiable, replace the Traverse Unit after measuring the lop.
• For points q to Q7 , take measurements at the points shown in the diagram below.

1. DIGITAL PCB test point

BN52
1
Detail A
JW01
RFEQO q
RFO w
C214
FEI e
CN93
VC (a)
TEI t
FOO r
C212
TRO y
FMO u
DMO i
CD/TCD-784
CD-R/TCD-R082W
CD-RW/TCD-W082W
IC22 IC23
C246 C231 C234
C248
C251
JW01
C203
R256 X201
R255
R254
R253
A
C206
C207
C214 C209
CN93 C210
DGND1
VC
FEI
TRO FMO DMO
FOO
C221
C212
TEI
R361
C356
DGND2
R340
D119 IC33
R304 RN38
IC38 T62
R308 R306 C311 R303
R309 R307
R305
R360
C372
C390
1 R337
IC36
T74
R338
R339
2
C338
CN31 R346
C301
C391
C302
R323
C426
C L310 C388 R330 R326
IC31
R324
C339
C386
C387 R322
X301
IC37
USB GND
C357 C359
IC39 L302
JW02
USB D+ USB D-
CN76
2 C317
C385
C384 C318
C319
C418
R348
C320 C419
R347
C333
C362 C361
L309 C420
CUP12763Z_A
C251
C203
C206
C207
C209
C210
VC
FEI
TRO FMO
FOO
C221
TEI
DGND2
CUP12763Z_A
C215
D201
L201 Q201 R230
R229
CN23
CN62
C117 C116
X101
C224
C108
CN11
R118
C112
R117
C111
R110
Q104
IC11
D102
D107
R365
C122
C353
C351
C431
IC12
C348
C343
C432
C429
C256 C254
C342
C349
IC24 R236
C350
C341
C433
IC32
C434
C142
C127
C265
R251
C258 C259 C260
CN77
RCD-M40 MP DIGITAL PCB
Detail B
C262
R256
R255
R254
R253
DGND1
DMO
C264
R361
C356
R340
Detail C
1
C385
C384
R348
R347
38
BN97
C135
R145
R146
R147
R148
R149
E3
R905
R151
R904 EK
E1C
R903
R902 JPN
E2
R901
CN74
Q101
Q103
Q102
CN22
C262
B
CN21
R243
LOAD+
CLSW
Pb R242 A side
C264
OPSW
CN22
CN21
R243
LOAD+
CLSW
R242
Pb
OPSW
L310
C388
C386
C387
USB GND
IC39
USB D+ USB D-
CN76
2 C317
C318
C319
C320
C333
Q0 CLSW
(b) MGND
Q1 LOAD+
Q2 LOAD-
o OPSW
(c) DGND
Q3 USB+
IC37
Q4 USB-
C362