Pioneer CLD-D503 Service Manual page 17

CLD-D503, CLD-D57C
@ Pin function
[io | PinName [VO] —~—~S*urction ——SSSCSC—~S~S
A TESTI EG LSI test pin (normally incoanecicd)
| 2 [AO |__| Pinto input the output from PACO03A internal VCO (8.6436 MHz)
| start
PDO Phase output with EFM signal. Set so that frequency is increased with +.
EFMIN is input pin of 1-2Vp-p of HF signal. EFM signals having reverse phase, that
went through the amplitude limiter, are output from EFMO, EFMO pins. These EFM
signals are input to the EFMIN pin via the low pass filter in PACOO3A. These signals
control slice level.
Output for disc motor control
CLV* is a signal to accelerate the disc in a positive direction,
and CLV is a signal to decelerate a disc.
One mode is selected from accelerate, decelerate, CLV and
stop modes by a command from the microcomputer. The
CLV* and CLV: output in each mode are shown in the table
to the right.
The TOFF terminal is Low only when the CLV servo control command is in the CLV
mode. In other modes, the TOFF terminal is High. Command-driven control of the TOFF
terminal is enabled in the CLV mode.
}iz{vep — fo Outputs "H" during CLV rough servo : Outputs "L" during phase control
| 13 |FocS | © | Focusservo becomes OFF when FOCS pin is "H". Lens lowers by FST pin output, and
fia [rst | | gradually rises when FOCS pinis"H". If FZD is output, FOCS is reset. These pins are
== for focus retraction.
ris fro |
in a
17 | TES I
fig [PCcK —ss fs 0 | 4.3218 MHz. PCK monitor pin
19 | FSEQ Becomes 1 when SYNC (true FS) adecied from EFM signal and SYNC (inserted FS) of
ace match. (1 frame latch output)
| O | Generates a kick pulse, JP+, and JP- according to the track jump command. Jumps the
21 GE. Os | specified number of tracks (1, 4, 16, 64).
| 22 |THLD | 0 | |
23 |TEST3. ss {sd LSI test pin (normally not connected)
Used as a pair with TOFF, TGL, THLD, JP+ and JP- output pins.
Generates a kick pulse, JP+, and JP- according to the track jump command. Jumps the
specified number of tracks (1,4, 16, 64).
24 | VDD
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| 26) | CO zeae lsad number of tracks (1, 4, 16, 64).
[27 [DEMO | _1_| For seadjusting process. Input pin for sound function, SS
as [Tests | 1 | Lstiestpin (normally novomecied) ————SSCSC~C~S~*~*
[29 [EMPH | 0 | Deemphassis necessary when EMP SSCSC~"S~S~*~*~*
P30 [NC | = [Notcomesed
31 [WCLK | © | Outpus signal io D/A converter. Signal forsamplehold, ———SSCC*d
32 [TesT7 __|_0 | Lstuestpin (normally notcomected) ———SSCSCSC~"~*~"~"~*~*~*
[33 [ERCLK | 0 | Ouipus signal io D/A convener. LRswitching signal —————SSCC*SY
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