Sony MT-MZR70-165, MZ-R90/R91 service manual

Page 39

Pin No.

Pin Name

I/O

Pin Description

 

 

108

VDC4

Power supply terminal (+1.8 V) (for internal logic)

 

 

 

 

 

 

109

TRDR

O

Tracking servo drive PWM signal (–) output to the MPC17A56FTA (IC601)

 

 

 

 

110

TFDR

O

Tracking servo drive PWM signal (+) output to the MPC17A56FTA (IC601)

 

 

 

 

111

FFDR

O

Focus servo drive PWM signal (+) output to the MPC17A56FTA (IC601)

 

 

 

 

112

FRDR

O

Focus servo drive PWM signal (–) output to the MPC17A56FTA (IC601)

 

 

 

 

113

FS4

O

Clock signal (176.4 kHz) output to the MPC18A21MTB (IC603) (X' tal system)

 

 

 

 

 

114

SRDR

O

Sled servo drive PWM signal (–) output terminal

Not used (open)

 

 

 

 

 

115

SFDR

O

Sled servo drive PWM signal (+) output terminal

Not used (open)

 

 

 

 

 

 

116

VSC4

Ground terminal (for internal logic)

 

 

 

 

 

 

 

117

SPRD

O

Spindle servo drive PWM signal (–) output terminal

Not used (open)

 

 

 

 

 

118

SPFD

O

Spindle servo drive PWM signal (+) output terminal

Not used (open)

 

 

 

 

119

FGIN

I

FG signal input terminal for spindle servo Not used (open)

 

 

 

 

 

 

120 to 122

TEST1 to TEST3

I

Input terminal for the test (normally : fixed at “L”)

 

 

 

 

 

 

123

EFMO

O

EFM signal output when recording mode to the MPC18A21MTB (IC603)

 

 

 

 

124

SPVS

O

Spindle servo drive voltage control signal output to the MPC17A56FTA (IC601)

 

 

 

 

 

 

125

VDIO3

Power supply terminal (+2.4 V) (for I/O)

 

 

 

 

 

 

 

 

126

VSIO3

Ground terminal (for I/O)

 

 

 

 

 

 

127

SPDU

O

Spindle servo (U) drive signal output to the MPC17A56FTA (IC601)

 

 

 

 

128

SPDV

O

Spindle servo (V) drive signal output to the MPC17A56FTA (IC601)

 

 

 

 

129

SPDW

O

Spindle servo (W) drive signal output to the MPC17A56FTA (IC601)

 

 

 

 

130

SPCU

I

Spindle servo (U) timing signal input from the MPC17A56FTA (IC601)

 

 

 

 

131

SPCV

I

Spindle servo (V) timing signal input from the MPC17A56FTA (IC601)

 

 

 

 

132

SPCW

I

Spindle servo (W) timing signal input from the MPC17A56FTA (IC601)

 

 

 

 

133

SLDU

O

Sled servo (U) drive signal output to the MPC17A56FTA (IC601)

 

 

 

 

134

SLDV

O

Sled servo (V) drive signal output to the MPC17A56FTA (IC601)

 

 

 

 

135

SLDW

O

Sled servo (W) drive signal output to the MPC17A56FTA (IC601)

 

 

 

 

 

 

136

VDC5

Power supply terminal (+1.8 V) (for internal logic)

 

 

 

 

 

 

 

 

137

VSC5

Ground terminal (for internal logic)

 

 

 

 

 

 

138

SLCU

I

Sled servo (U) timing signal input from the MPC17A56FTA (IC601)

 

 

 

 

139

SLCV

I

Sled servo (V) timing signal input from the MPC17A56FTA (IC601)

 

 

 

 

140

SLCW

I

Sled servo (W) timing signal input from the MPC17A56FTA (IC601)

 

 

 

 

141

SLVS

O

Sled servo voltage control signal output to the MPC17A56FTA (IC601)

 

 

 

 

142

BYPS

O

By-pass transistor control signal output to the MPC17A56FTA (IC601) Not used (open)

 

 

 

 

 

 

143

VSSDRAM

Ground terminal (for internal 16M bit D-RAM)

 

 

 

 

 

 

144

VDDDRAM

Power supply terminal (+2.4 V) (for internal 16M bit D-RAM)

 

 

 

 

 

 

– 47 –

Image 39
Contents UK Model US ModelCanadian Model AEP ModelNotes on chip component replacement Flexible Circuit Board RepairingTABLE OF CONTENTS OPTICAL PICK-UPFLEXIBLE BOARD SECTION SERVICING NOTENOTES ON LASER DIODE EMISSION CHECK NOTES ON HANDLING THE OPTICAL PICK-UPBLOCK LCX-2RSECTION 2 GENERAL Page Page SECTION DISASSEMBLY 3-4.MAIN BOARD 3-3.LCD MODULE3-6.SERVICE ASSY, OP 3-5.MD MECHANISM DECK MT-MZR70-165over write head section 3-8.MOTOR FLEXIBLE BOARD 3-7.HOLDER ASSY3-10.“MOTOR, DC M601”, “MOTOR, DC M603” 3-9.MOTOR, DC M602888xxxxxxxxxFREC1SHUF SECTION 4 TEST MODE4-2-2.Operation in Setting the Test Mode 4-2-1.Setting Method of Test Mode000M a n u a l 011 0 5 9 A 011 C 6 8 S011 0 F FJ 011 0 6 3 B000P * * R 000B O v r 000B f u l 000R t r y 000P * * RE I B 000S t a t 000A d r s 000B E m p 000# # # # # #000R # # # # 0001 s t0001 s t 0001 s t 0001 s t 000N - 1 000N - 1 000N - 2 000N - 2 000N• Description of Indication History Description of Error Indication Codes4-7.KEY CHECK MODE 021R e s SECTION ELECTRICAL ADJUSTMENTS021R e s N 021R e s O K ?766V r h V c h 762V c l P W M765V c h P W M 763V r h V c l341 C D O K 014S e t T m p000 A s s y C D R U NCheck Method 043R e s u m e043R e s C l r ConnectionConnecting Location DIAGRAMS MZ-R70SECTION MZ-R70 6-3.BLOCK DIAGRAM - POWER SUPPLY SECTION MZ-R70Waveforms Page Page MZ-R70 Refer to page 41 for IC Block DiagramsMZ-R70 MZ-R70 NJM2173 IC501SN761056 IC302MPC18A21MTB IC601MPC17A56FTA IC603IC901 MPC18A31FTA IC301AK4517-VQ-L 6-9.IC PIN DESCRIPTIONS MAIN BOARD IC502 CXD2660GA Page Page Page Page Page SECTION EXPLODED VIEWS Page MAIN SECTION ELECTRICAL PARTS LISTMAIN MAIN MAIN MAIN Published by General Engineering Dept Sony CorporationMZ-R70 Personal Audio Division CompanySubject Taiwan model Addition US Model Canadian Model AEP Model UK ModelE Model Australian Model Chinese Model Ver