Sony CMT-EH25 / CMT-EH26 / HCD-EH25 / HCD-EH26 Service Manual ▷ View online
HCD-EH25/EH26
5
SECTION 3
DISASSEMBLY
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
Note: Follow the disassembly procedure in the numerical order given.
3-2. REAR CABINET BLOCK
3-2. REAR CABINET BLOCK
(Page
(Page
5)
SET
3-3. FRONT CABINET BLOCK,
TOP CABINET BLOCK,
MAIN
BOARD
(Page
6)
3-4. MF-EH15 (TAPE MECHANISM DECK),
CASSETTE
CASSETTE
LID
(Page
6)
3-5. BASE UNIT BLOCK
(BU-K8BD90-WOD)
(Page
(BU-K8BD90-WOD)
(Page
7)
3-6. OPTICAL PICK-UP BLOCK
(KSM-213CDP)
(Page
(KSM-213CDP)
(Page
7)
two screws
(BVTP3
× 10)
screw
(KTP2
3
× 8)
screw
(KTP2
3
× 8)
connector
(CN002)
connector
(CN103)
rear cabinet block
two screws
(BVTP3
× 10)
two screws
(BVTP3
× 10)
HCD-EH25/EH26
6
3-3. FRONT CABINET BLOCK, TOP CABINET BLOCK, MAIN BOARD
3-4. MF-EH15 (TAPE MECHANISM DECK), CASSETTE LID
slide switch (REC/PB) (SW501)
REC lever
2.3
± 0.4 mm
two screws
(BVTP2.6)
flexible flat cable (5 core) (FFC001)
(Except AEP, UK models),
flexible flat cable (7 core) (FFC001)
(AEP, UK models)
(CN106)
flexible flat cable (17 core)
(FFC002)
(CN105)
flexible flat cable (FFC003)
(CN201)
connector
(SW750)
two connectors
(CNP501,
CNP502)
claw
Note: Adjust so that the space of slide switch (REC/PB) (SW501)
REC lever becames 2.3
± 0.4 mm.
claw
claw
claw
R top cabinet block
RB MAIN board
front cabinet block
claw
3 two screws
(BVTP2.6)
1 screw
2 lever (REC)
qd cassette lid
9 two screws
q; cable holder
qs two claws
qa MF-EH15
(tape mechanism deck)
4 PWB holder
5 two screws
(BVTP2.6)
6 Open the button cover (C).
7 Push the eject button.
8
5 screw
(BVTP2.6)
Note: When removing cassette lid,
it's possible to remove cassette
lid by the order of
6 7 qs qd.
Ver. 1.3
HCD-EH25/EH26
7
3-5. BASE UNIT BLOCK (BU-K8BD90-WOD)
Note: This illustration sees the top cabinet block back side from back.
3-6. OPTICAL PICK-UP BLOCK (KSM-213CDP)
top cabinet block
four screws
(PWH
B2.6)
two vibration proof rubbers
(red)
two vibration proof rubbers
(green)
four claws
CD cover
base unit block
(BU-K8BD90-WOD)
– Bottom view –
wire (flat type) (16 core)
(optical pick-up, CD board: CN301)
CD board
optical pick-up block
(KSM-213CDP)
Remove the four solders.
HCD-EH25/EH26
8
SECTION 4
TEST MODE
COLD RESET
The cold reset clears all data including preset data stored in the
memory to initial conditions. Execute this mode when returning
the set to the customer.
Procedure:
1. Press three buttons of [
The cold reset clears all data including preset data stored in the
memory to initial conditions. Execute this mode when returning
the set to the customer.
Procedure:
1. Press three buttons of [
x
], [
l
. –
TUNING] and [
?/1
]
simultaneously.
2. When “RESET” appears, the set enters standby status.
PANEL TEST MODE
Procedure:
1. Press the [
Procedure:
1. Press the [
?/1
] button to turn the power on.
2. Press three buttons of [FUNCTION], [USB], and [
?/1
] simul-
taneously.
3. When the panel test is activated, [STANDBY] LED and seg-
ments on the liquid crystal display are all turned on.
4. Press the [CD
u
] button, date and version are displayed. For
example, “0403V101”.
5. Press the [TUNER/BAND] button, model name and destina-
tion are displayed. For example, “EH25CE2”.
6. To release from this mode, press three buttons of [FUNC
TION], [USB], and [
?/1
] simultaneously.
TUNER STEP CHANGE
(EH25: Colombian, Chilean, Peruvian, Mexican, Singa-
pore, Korean, Indian and Australian models)
The AM tuning interval can be changed over 9 kHz or 10 kHz.
Procedure:
1. Press the [
(EH25: Colombian, Chilean, Peruvian, Mexican, Singa-
pore, Korean, Indian and Australian models)
The AM tuning interval can be changed over 9 kHz or 10 kHz.
Procedure:
1. Press the [
?/1
] button to turn the power on.
2. Press the [TUNER/BAND] button to select TUNER (AM)
function.
3. Press the [
?/1
] button again to turn the power off (standby).
4. After pressing the [DISPLAY] button on the remote com-
mander, while pressing the [TUNING +
M
L
] button,
press the [
?/1
] button.
5. It turns power on and display “9K STEP” or “10K STEP”, and
thus the tuning interval is changed over.
CD SERVICE MODE
This mode can move the SLED of the optical pick-up, and also can
turn the optical pick-up laser power on and off.
Procedure:
1. Press the [
This mode can move the SLED of the optical pick-up, and also can
turn the optical pick-up laser power on and off.
Procedure:
1. Press the [
?/1
] button to turn the power on.
2. Press the [FUNCTION] button to select CD function.
3. Press three buttons of [
3. Press three buttons of [
l
m
– TUNING], [FUNCTION],
and [
?/1
] simultaneously.
4. It enters the CD service mode and displays “SERVICE”.
5. To release from this mode, press three buttons of [
5. To release from this mode, press three buttons of [
l
m
–
TUNING], [FUNCTION] and [
?/1
] simultaneously.
Key Operation:
[TUNING +
[TUNING +
M
L
], [
l
m
– TUNING]:
Use these keys to move the SLED. When [TUNING +
M
L
] is pressed in this mode, the SLED moves to outer cir-
cumference and the message “SLED OUT” is displayed.
When
[
l
m
– TUNING] is pressed in this mode, the
SLED moves to inner circumference and the message
“SLED IN” is displayed.
“SLED IN” is displayed.
[FUNCTION]:
Use this key to turn the optical pick-up laser power on and
off. When the laser power is turned on, the message “LD
ON” is displayed. When the laser power is turned off, the
message “LD OFF” is displayed.
ON” is displayed. When the laser power is turned off, the
message “LD OFF” is displayed.
CD ERROR CODE
The past errors of the optical pick-up system (= optical unit + CD
board) are displayed as the BD Errors as shown below.
Procedure:
1. Press the [
The past errors of the optical pick-up system (= optical unit + CD
board) are displayed as the BD Errors as shown below.
Procedure:
1. Press the [
?/1
] button to turn the power on.
2. Press the [FUNCTION] button to select CD function.
3. Press three buttons of [
3. Press three buttons of [
l
m
– TUNING], [DSGX] and
[
?/1
] simultaneously.
4. Then, the BD error code is displayed as “D0xxxxxx” (x means
hexadecimal number) on the liquid crystal display as shown
below.
below.
5. Every pressing of the [TUNING +
M
L
] button in this
mode increments the number after “D” starting from “D0” up
to “D4”, and then returns to “D0”. Every pressing of the [
to “D4”, and then returns to “D0”. Every pressing of the [
l
m
– TUNING] button in this mode decrements the number
after “D”. The smaller the error code number is, the newer the
error content is.
error content is.
6. To release from this mode, press the [
?/1
] button to turn the
power off.
Contents of “BD Errors”
Error display example
D 0 01 06 01
Error display example
D 0 01 06 01
1 2 3 4
1 It indicates the error history number
0 to 4: The error code number 0 indicates the newest error.
2 It indicates the error content
01: The focus servo cannot lock-in.
02: GFS is no good (NG).
03: The startup time exceeds the specifi ed period of time
(time over)
(time over)
04: The focus servo is unlocked continuously.
05: Q code cannot be obtained within the specifi ed period of
time.
time.
06: The tracking servo cannot lock-in.
07: Blank
disc
3 It indicates the on-going processing of optical pick-up system
(= optical unit + CD board) when the trouble has occurred.
01: The CD SHIP mode processing is in progress.
02: The POWER OFF processing is in progress.
03: The POWER ON processing is in progress.
04: The INITIALIZE processing is in progress.
05: The optical pick-up system (= optical unit + CD board)
is in the stop state.
is in the stop state.
06: The STOP operation is in progress.
07: The startup processing is in progress.
08: The TOC read-in processing is in progress.
09: The SEARCH operation is in progress.
0A: The PLAY operation is in progress.
0B: The PAUSE operation is in progress.
0C: The PLAY – MANUAL SEARCH operation is in prog-
ress.
ress.
0D: The PAUSE – MANUAL SEARCH operation is in prog-
ress.
ress.
4 It indicates the operation that is being processed when the trou-
ble has occurred.
It indicates the step number of each processing specifi ed by 3.
Because the numbers of steps are different in each processing,
this number is different in each processing.
Because the numbers of steps are different in each processing,
this number is different in each processing.
Ver. 1.6
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