Printed Circuit Board - Yamaha MCX-C15 Service Manual

Musiccast distributed audio controller/amplifier
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A
B
PRINTED CIRCUIT BOARD (Foil side)
1
Point 1 (Pin 131 of IC1)
V: 1V/div, H: 100nsec/div
DC, 1 : 1 probe
2
0V
2
FUNCTION (1)
CB402
Point 2 (Pin 1 of IC6)
V: 2V/div, H: 40nsec/div
DC, 1 : 1 probe
1
0V
3
Refer to "ENTERING SYSTEM ID" on page 18 to 20.
「システムIDの書き込み」(18∼20ページ)参照
Point 3
CH1: Pin 5 of IC5
CH2: Base of Q1
V: 2V/div, H: 4.0sec/div
DC, 1 : 1 probe
CH1
4
CH2
AC POWER ON
AC POWER OFF
(Connect the power cable)
(Disconnect the power cable)
Point 4 (Pin 128 of IC202)
V: 1V/div, H: 40nsec/div
DC, 1 : 1 probe
5
0V
NOTE)
The MAIN P.C.B. actually has a six-layer pattern structure (part face pattern, internal
pattern 1, internal pattern 2, internal pattern 3, internal pattern 4 and solder face pattern)
but it is shown as "part face pattern + solder face pattern" in this diagram.
NOTE)
MAIN P.C.B.は、6層パターン構造(部品面パターン、内層1パターン、内層2パターン、内層3
パターン、内層4パターン、ハンダ面パターン)ですが、本図のMAIN P.C.B.は、部品面パター
ン+ハンダ面パターンを表記しております。
6
C
When any part not included in the Parts List has failed, replace the P.C.B.
パーツリストに記載されていないパーツの故障の場合、P.C.B.を交換してください。
MAIN P.C.B.
(Side A) Lead Solder Used
FUNCTION (2)
CB801
MAIN P.C.B.
(Side B) Lead Solder Used
3
3
CH2
CH1
D
E
MCX-C15
FUNCTION (1) P.C.B.
MAIN
CB202
FUNCTION (1) P.C.B.
4
FUNCTION (1)
CB403
NOTE)
The FUNCTION P.C.B. actually has a four-layer pattern structure (part face pattern,
internal pattern 1, internal pattern 2 and solder face pattern) but it is shown as "part face
pattern + solder face pattern" in this diagram.
NOTE)
FUNCTION P.C.B.は、4層パターン構造(部品面パターン、内層1パターン、内層2パターン、
ハンダ面パターン)ですが、本図のFUNCTION P.C.B.は、部品面パターン+ハンダ面パターン
を表記しております。
F
G
MCX-C15/MCX-CA15
(Side A) Lead Solder Used
SYSTEM (2)
CB602
Point 5 (Pin 2 of IC406)
V: 2V/div, H: 40nsec/div
DC, 1 : 1 probe
0V
AV OUT
LAN
(Side B) Lead Solder Used
5
MAIN
CB204
H
33

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