Read Sony ICF-CD553RM Service Manual online
10
ICF-CD553RM
CD-JUMP TEST MODE
Procedure:
1. Connect the oscilloscope to TP (TE) and TP (VREF) on the
1. Connect the oscilloscope to TP (TE) and TP (VREF) on the
CD board.
Connecting Location: CD board (See page 13)
Connecting Location: CD board (See page 13)
2. Connect 270 k
Ω and 47 kΩ resistors in parallel to the end of
TP603 on the SIDE-KEY board, and short another end of re-
sistors to the GND, and the CD-JUMP TEST MODE will be
activated.
sistors to the GND, and the CD-JUMP TEST MODE will be
activated.
3. Insert a CD disc.
4. Turn the power ON. Press the
4. Turn the power ON. Press the
7
key.
5 . If the
[MODE]
key is pressed, you can jump in fast feed or fast
reverse direction with the
>
or
.
key by the jump
amount set in Table 1.
Table 1
LCD
Key
>
.
REP ALL
TRACK + 1
TRACK - 1
SHUFFLE
TRACK + 10
TRACK - 10
SHUFFLE, REP
TRACK + 100
TRACK - 100
Waveform of TP (TE) and TP (VREF) output in each mode is as
follows.
follows.
6. Turn the power OFF to release the CD-JUMP TEST MODE.
REPEAT – ALL mode
500
500
µ
s/div
SHUFFLE mode
1 ms/div
1 ms/div
SHUFFLE – REPEAT mode
10 ms/div
10 ms/div
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