NW-E55, NW-E75, NW-E90, NW-E95 (serv.man2) — Sony Audio Service Manual (repair manual)

Model
NW-E55 NW-E75 NW-E90 NW-E95 (serv.man2)
Pages
14
Size
1.02 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / SUPPLEMENT-1
File
nw-e55-nw-e75-nw-e90-nw-e95-sm2.pdf
Date

View Sony NW-E55 / NW-E75 / NW-E90 / NW-E95 (serv.man2) Service Manual online

SERVICE MANUAL
Ver. 1.3  2005.09
SUPPLEMENT-1
Subject: DISPLAY board and MAIN board changed to
suffix-21 from suffix-11
9-877-993-81
NW-E55/E75/E90/E95
US Model
Canadian Model
NW-E75/E95
AEP Model
NW-E55/E75/E95
UK Model
NW-E55/E75
E Model
Tourist Model
NW-E90
A TYPE
B TYPE
CN402
39
40
1
2
IC460
DISPLAY BOARD
   (SIDE A)
CN401
23
24
25
26
39
40
1
2
MAIN BOARD
   (SIDE B)
CN402
23
24
1
2
DISPLAY BOARD
   (SIDE A)
CN401
23
24
1
2
MAIN BOARD
   (SIDE B)
NW-E90/E95 consists of the two model, one model uses IC460 while the other model does not use IC460.
In this supplement-1, the model using IC460 is called “A TYPE” and the other model not using IC460 is called “B TYPE”
2
NW-E55/E75/E90/E95
Part number of printed wiring board changed to suffix-21 from suffix-11.
It has any difference between suffix-11 and suffix-21.
This supplement-1 describes printed wiring boards, schematic diagrams and electrical parts list about these boards.
Refer to original service manual (9-877-993-0[]) for other information.
• How to distinguish
Location of parts number on changed printed wiring board
DISPLAY BOARD
   (SIDE A)
MAIN BOARD
   (SIDE B)
FORMER TYPE : 1-862-329-11
NEW TYPE        : 1-862-329-21 
FORMER TYPE : 1-862-328-11
NEW TYPE        : 1-862-328-21 
3
3
NW-E55/E75/E90/E95
NW-E55/E75/E90/E95
DIAGRAMS
Note on Schematic Diagram:
• All capacitors are in 
µ
F unless otherwise noted. (p: pF) 50 WV or
less are not indicated except for electrolytics and tantalums.
• All resistors are in 
 and 
1
/
4
 
W or less unless otherwise specified.
%
: indicates tolerance.
C
: panel designation.
f
: internal component
: B+ Line.
• Power voltage is dc 1.5 V and fed with regulated dc power supply
from battery terminal.
• Voltages and waveforms are dc with respect to ground under no-
signal (detuned) conditions.
no mark : PLAY
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal production toler-
ances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production toler-
ances.
• Circled numbers refer to waveforms.
• Signal path.
F
: PLAY
a
: DIGITAL OUT
k
: DIGITAL IN
Note on Printed Wiring Board
•  
X
: parts extracted from the component side.
•  
Y
: parts extracted from the conductor side.
•  
: Pattern from the side which enables seeing.
• DISPLAY board and MAIN board are multi-layer printed
board.
However, the patterns of intermediate-layer have not been
included in the diagram.
Caution:
Pattern face side: Parts on the pattern face side seen from
(Side A)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side B)
the parts face are indicated.
Waveform
MEMO
1
 
IC700 
8
 (OSCOUT)
0.5 V/div, 10 
µ
sec/div
1.1 Vp-p
31.25 
µ
sec
4
4
NW-E55/E75/E90/E95
NW-E55/E75/E90/E95
PRINTED WIRING BOARD  – DISPLAY BOARD (SIDE A) –   
 :Uses unleaded solder.
• Semiconductor
Location
Ref. No.
Location
D703
D-7
IC460
D-4
IC460
R852
1
20
R870
1
CN402
2
23
25
24
26
39
40
LIQUID
CRYSTAL
DISPLAY
A
MAIN
BOARD
CN401
SUPPLEMENT-1
Page 8
(
(
1-862-329-
21
(21)
DISPLAY BOARD    
(SIDE A)
*2
*1
*1
*2
*2
*2
*1
*2
*2
*2
*1
1
24
48
25
R872
R871
R873
*1
*1
*1
*1
*1
*1
*1
*1
R877
R874
R875
C870
C871
R876
C460
C873
C872
*1   only for E90 (A TYPE) and E95 (A TYPE)
*2   only for E55, E75, E90 (B TYPE) and E95 (B TYPE)
1
2
A
B
C
D
E
F
3
4
5
6
7
9
8
10
Page of 14

Download Sony NW-E55 / NW-E75 / NW-E90 / NW-E95 (serv.man2) Service Manual (Repair Manual)

Here you can view online or download Sony NW-E55 / NW-E75 / NW-E90 / NW-E95 (serv.man2) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony NW-E55 / NW-E75 / NW-E90 / NW-E95 (serv.man2) Audio. Information contained in Sony NW-E55 / NW-E75 / NW-E90 / NW-E95 (serv.man2) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).