Read Sony BM-21 / BM-23 (serv.man3) Service Manual online
SERVICE MANUAL
US Model
BM-21/23
Canadian Model
BM-23
AEP Model
BM-21/23
UK Model
BM-23
9-959-363-82
Ver. 1.1 2005.08
BM-21/23
SUPPLEMENT-2
Subject: Addition of BM-23 environmental measure model (only for AEP model)
2
BM-21/23
BM-23 environmental measure model (only for AEP model)
This supplement-2 describes disassembly, mechanical adjustments, electrical adjustments, diagrams, exploded views and
electrical parts list about BM-23 environmental measure model.
Refer to original service manual (9-959-363-1[ ]) for other information.
This supplement-2 describes disassembly, mechanical adjustments, electrical adjustments, diagrams, exploded views and
electrical parts list about BM-23 environmental measure model.
Refer to original service manual (9-959-363-1[ ]) for other information.
• How to distingnish
Before change : 1-651-403-
AUDIO BOARD
(SIDE A)
LCD BOARD
(SIDE A)
After change : 1-868-269-
Before change : 1-651-429-
After change : 1-868-270-
After change : 1-868-270-
3
BM-21/23
SECTION 1
DISASSEMBLY
1-1. DISASSEMBLY FLOW
1-3. CONTROL PANEL BLOCK ASSEMBLY
(Page 5)
1-4. AUDIO BOARD
(Page 6)
1-5. MECHANISM DECK (MB-23-101)
(Page 7)
1-6. HOLDER PANEL ASSEMBLY
(Page 7)
1-2. CABINET (REAR) BLOCK ASSEMBLY
(Page 4)
SET
• This set can be disassembled in the order shown below.
4
BM-21/23
1-2. CABINET (REAR) BLOCK ASSEMBLY
speaker
1
Open the battery case lid
in the direction of arrow.
4
Remove soldering
two the four points.
5
cabinet (rear) block assembly
note : When attaching the cabinet (rear)
block assembly, adjust the position
of the three knobs indicated by
arrows
block assembly, adjust the position
of the three knobs indicated by
arrows
A
and the switch of the
AUDIO board.
3
two screws
(+BTP 1.7
(+BTP 1.7
×
10)
2
screw
(M 1.4
(M 1.4
×
5.0)
A
A
AUDIO board
Note:
Follow the disassembly procedure in the numerical order given.
